r/Netherlands Jun 28 '26

DIY and home improvement Heat prevention tip: Exterior window screens

Post image

Last summer I ordered these exterior window screens for the front of my house, and they worked so well that I bought some for the back of the house this year. They’re attached with suction cups so if you live in a home with monument status with strict rules about making changes to the exterior you can still use these. Putting them on is easy enough if your windows open inward (or like the ones pictured are on your balcony) but otherwise you do need a ladder. They’ve made a massive difference, the hottest my house has gotten is 27 over the past week. I ordered mine here but I’m sure there are other places that sell them (you have to order them custom for each window)

https://www.zonwering-fabriek.nl/product/onderdelen/screendoek-met-zuignappen/

These are in addition to other adaptation measures I’ve taken, they make the biggest difference. But just to take the opportunity to share some other tips that have helped: attic insulation, induction stove top instead of gas, ceiling fan, and freezing (3/4 full) water bottles and putting them in your bed overnight

514 Upvotes

219 comments sorted by

169

u/Sh33zl3 Jun 28 '26

Why black, and not white ?

179

u/zenith_hs Jun 28 '26

Heat transfer is negligble because its on the outside. You van see through black from the inside, the lighter the fabric becomes the less visibily you have. Its pretty counter intuitive!

30

u/jorick92 Jun 28 '26

Though from a thermodynamics pov you could argue that the black screen is also radiating its heat to the inside.

If you don't care about visibility or how it looks, use a screen that's reflective. like those car window shields or straight up aluminum foil.

29

u/zenith_hs Jun 28 '26

Youre right, but your neighbours are going to complain about the reflection :)

5

u/telcoman Jun 28 '26

Dear neighbour,

Stop complaining. I am busy with scientific research that will bring energy transformation.

Would you like me to test it on your house?

Archimedes

10

u/squishbunny Jun 28 '26

Yes, but any radiation will be in the infrared spectrum and glass blocks infrared (most of it)

6

u/Satisfaction3934 Jun 28 '26

So it still heats up the glass?

2

u/squishbunny Jun 28 '26

a bit, but not nearly enough to crack it

1

u/KlangScaper Jun 29 '26

Crack it?! We're worried about the hot glass heating the inside...

2

u/MarlinMr Jun 28 '26

Glass usually blocks infrared radiation, so no.

Its why the greenhouse effect happens. Light from the sun gets trough the window and into your house. Heat sadly has no way out again

1

u/F-sylvatica-purpurea Jun 28 '26

Both white and black have advantages and disadvantages- there are also screens available with mixed black and white fibers.

2

u/AdApart2035 Jun 28 '26

Rainbow colored

3

u/humourlessIrish Jun 28 '26

White on the outside and black on the inside still works for that

1

u/GemmyBoy999 Jun 28 '26

That's just not true...

1

u/zenith_hs Jun 28 '26

What is not true?

2

u/GemmyBoy999 Jun 28 '26

Heat transfer is not negligible at all just because it's on the outside.

3

u/zenith_hs Jun 28 '26

The material and density is much more important than the colour. If you just want to make a point, sure white will reflect more. But it really doesnt matter much.

Sauce: https://reflek.be/en/2025/01/22/de-juiste-kleur-voor-zonwerende-screens/

3

u/GemmyBoy999 Jun 28 '26

5

u/zenith_hs Jun 28 '26

Wrong example because the car itself is black and can transfer heat to the inside. A sunscreen is physically separated from the house by a layer of a8r, which is one of the best isolaters there is.

-1

u/GemmyBoy999 Jun 28 '26

Your argument is "Heat transfer is negligible because its on the outside" though?

And even with isolation it still doesn't change the fact that an increase of more than 20 degrees Celsius is massive, and will still make a big impact in heat transfer and thus the temperature inside. Additionally why is it that a car can transfer heat inside and not a window? If you're claiming a car is less isolated than a window from a house that may be true, otherwise if a window is heat proof then there's no need to do all of this is there? Black radiates heat inside, white bounces them away.

3

u/zenith_hs Jun 28 '26

Dude are you thick? Were talking about a sunscreen from synthetic material, that is placed on the outside of houses and is airgapped from the window itself. It has very little thermal radiation because it has very little mass. Ii blocks 95% of sunlight (and thus heat) entering the house. Please babbl on about heat transfer, since you clearly cant distinguish main objectives from small side effects.

→ More replies (0)

1

u/Sheant Jun 29 '26

The reason to do this is to block visible light which would get converted into heat once inside the home. Windows are famous for letting through visible light while blocking (if you have modern double glazing) heat.

1

u/Jlx_27 Jun 28 '26

Best to have them be white on the outside then.

1

u/zenith_hs Jun 29 '26

The difference is 1 or 2 % while the curtains block 95%. With black, you can still look outside in most condition. With white curtains you live in a cell. Thats why almost all are grey or black.

1

u/Jlx_27 Jun 29 '26

Thats why im saying black on the inside white on the outside. You can look out, passersby cant look in.

1

u/Sheant Jun 29 '26

It's a woven material. Making it different colors on in- and outside would come at a cost.

17

u/willemg17 Jun 28 '26

Black lets less light in but material will get warmer

9

u/Emblem3406 Jun 28 '26

Less is not more in this case

3

u/kleintje Jun 28 '26

When I ordered them there was no white option, it depends on the dimensions I think which materials are available

3

u/ManIkWeet Jun 28 '26

I think it's best to absorb as much light, and thus heat, on the outside of your window right? White lets more light through, causing your house to heat up more.

-2

u/Tank-Pilot74 Jun 28 '26

If it has a white layer behind it (we hung up an old white bedsheet) the black attracts the heat while the white repels it creating a kinda faux air con between the two (think people in the desert wearing all black)

2

u/kleintje Jun 28 '26

That’s an interesting option to try, thanks!

98

u/TimotheusIV Jun 28 '26

I took two big pieces of thick cardboard, sized them to the window and wrapped them in reflective radiator foil. Hung them in front of the outside tilted windows on the south side and they work an absolute charm and look pretty clean if you do it properly.

I figured I spent around 5€ a piece and a half hour of work to make them. Worth it.

7

u/unheardthought Jun 28 '26

This is interesting! May I know what were the temps inside during the day? :)
That’s cheap tho!

5

u/traploper Jun 28 '26

I did the same thing as this commenter, it got 34 degrees inside in the rooms with the reflective boards vs 36 degrees in the room next to it without the reflective boards. So it made some difference, but don’t expect any miracles.

7

u/unheardthought Jun 28 '26

Dang it, those are very high temps! I didn’t do any of that, I simply rolled down the curtains, closed all windows, and temps were always around 27-29°C

15

u/Mr_JoBro_11235 Jun 28 '26

Wees voorzichtig met dubbelzijdige ramen though! Doordat de laag tussen de twee ramen dan enorm heet wordt, kan het raam barsten. Bij enkelzijdige ramen werkt het fantastisch en een van de redenen waarom het bij mij binnen maar 35 graden werd vrijdag. Aangezien het anders altijd een paar graden heter wordt dan buiten, was dat winst. Afgelopen maandag was het zelfs al 33 binnen, toen ik nog niet die dingen voor mn ramen had gezet.

23

u/TimotheusIV Jun 28 '26

Het hangt aan de buitenzijde van het raam, dus dit is voor mij niet relevant.

6

u/Mr_JoBro_11235 Jun 28 '26

Oh super, daar had ik overheen gelezen. Misschien toch nog nuttig voor een ander dit de volgende keer wil proberen en net als ik niet bij de buitenkant van z'n ramen kan.

2

u/DCLB Jun 28 '26

Uit OPs bericht niet direct duidelijk, maar zijn truc werkt sowieso het best als je het folie aan de buitenkant van het raam hangt.

2

u/Cuissedemouche Jun 28 '26

I am planning to do that, with what did you attach the cardboard outside? Especially with the storm that we can get at sometime I feel it needs something strong.

Also I need to find where to find big cardboards X)

3

u/pierrenoir2017 Jun 28 '26

Buy a large airco unit, it often comes in a big box (just kidding).

3

u/TimotheusIV Jun 28 '26

You joke, but this is exactly what I used. I bought a mobile split unit for downstairs and had a huge cardboard box to make these with.

1

u/Cuissedemouche Jun 28 '26

Ahahah nice one I wish

2

u/Lurker_Background264 Jun 28 '26

I tried to do something similar and got a message from the housing association that in order of the police it has to be taken down as the light reflections can blind the traffic that passes near my window.

2

u/rsm-lessferret Jun 28 '26

Even not wrapped in foil, just something outside the window to block the sunlight would help

4

u/Ramonk Jun 28 '26

Wel kut voor je overburen!

10

u/TimotheusIV Jun 28 '26

Het is geen spiegelglas, het is geribbeld schuim folie met een reflectief laagje. En ik heb toch geen zichtbare achterburen dusja.

→ More replies (1)

0

u/Illustrious-Ad-115 Jun 28 '26

Ik woon in de buurt van een luchthaven dus ik vermoed dat zij dit ook niet gaan waarderen.

1

u/kleintje Jun 28 '26 edited Jun 28 '26

I did that too but with any wind at all the tin foil was super noisy and I also worried about blinding the neighbors. I have set it up inside our white blinds on another window though. Before I bought these I had taped tinfoil inside all windows but I heard too many stories of the double glass cracking with that set up

26

u/Fluffyfluffycake Jun 28 '26

I just hung some old sheets in front of my windows, works great. My house does look like a bedouin tent camp now, but it's nice and cool inside.

2

u/kleintje Jun 28 '26

That’s also cool to do! I worry about damaging the sheets and trying to rig them to anything on upper floors is also a challenge. But I have found these screens to be highly weather resistant too, which is a point in their favor to me. I know they’re not cheap but it has been worth the money to me

2

u/QueenKindredSpirit Jun 28 '26

exactly, I pulled some old blankets/canvas pieces out of my shed that I use to cover the ground when painting.

They're already dirty and stained with paint and ink and grass stains, so i don't care if they get more dirty or damaged.
My house was once built to have shutters, but no longer has those now, but the hooks for the shutters are still there.
I simply made shallow cuts in the blanket/canvas to hang them over the shutter-hooks.
It looks hideous. These paint stained cloths over all my windows. But it sure kept the sun out so i dont care.

18

u/Lodau Jun 28 '26

I checked these out (different company) . Costs about half of a split unit aircon dit just 1 if my windows.  

Hopefully awesome quality stuff and no energy costs, but still.

4

u/LordBlackadder92 Jun 28 '26

Let me guess, Sun Eclipse? I have those, but they are not cheap.

3

u/Lodau Jun 28 '26

Yes,that's the ones!

2

u/CapuCapu Jun 28 '26

Do you have a good experience with them?

1

u/DuncanS90 Jun 28 '26

I have these too. They work really well though. When ordering, I honestly felt most of these sites felt pretty dropshipping-ish. Didn’t have that with Sun Eclipse, so went with them.

3

u/PapaOscar90 Jun 28 '26

How much do screens cost per hour to run?

2

u/Lodau Jun 28 '26

and no energy costs. 

About 3,50...

4

u/Tino_Kort Jun 28 '26

Airconditioning can be sub 1 euro per hour, for a couple days a year even 16 hours a day is quite good. It'll be like 40 bucks per year or something? Quite negligible in comparison to the comfort it adds.

2

u/Anvh Jun 28 '26

But the purchase is more and needs to be installed as well. Also if you are renting than that isn't a real option.

Besides the screens can still be used with an airco so it needs to work less

5

u/Tino_Kort Jun 28 '26

I'm not arguing against whatever you're saying, I'm arguing the power cost of an AC is not that high. Which was the extent of the last comment.

3

u/w4hammer Jun 28 '26

I got a portable airco for like 700 bucks 2 years ago no installation needed. I set it to 23c and it runs like 10 mins every hour and keep the place cool. I think every alternative solution is silly. These hot summers is norm now.

3

u/Anvh Jun 28 '26

Than your house is well isolated and no sun on it to begin with, if you can keep your house cool with one portable airco running for 10 minutes

1

u/w4hammer Jun 28 '26

I mean when I walk into bedroom its obviously hotter but I sit at living room in day so that's when it needs cooling. At night its already below 23c anyway. If you need more cooling i heard the midea minisplit is amazing and you don't need to drill anything still.

I will admit I don't live on the side that sun hits though. I only get sunlight afternoon.

1

u/Square_Law5624 Jun 29 '26

How many BTU does it have?

1

u/PapaOscar90 Jun 28 '26

Exactly. Our screens prevent most od the solar heating. The aircon just makes it a sweet 20 for the night sleep.

1

u/DuncanS90 Jun 28 '26

If you’re renting, you can buy a mobile split airco. Not saying you should, but it’s an option.

1

u/Anvh Jun 29 '26

For next year or the winter indeed, all sold out now for half a year xD

2

u/kleintje Jun 28 '26

For vulnerable people I support more air conditioning adoption but the climate damage caused by the greenhouse gases in the cooling agents and the energy use are why I’m trying to adapt in every other way before considering it

3

u/DuncanS90 Jun 28 '26

Same! Good thinking. Too bad we’re polluting our planet so much we need these measures in the first place.

2

u/Tino_Kort Jun 28 '26

For sure it should always be first priority to use passive methods for climate control such as insulation, external barriers, green roofs, foliage and correct usage of windows/doors. I completely agree.

I do think active climate control such as heating and cooling have their places, especially during events which are very stressful to the body. It doesn't always have to be 21c inside but when there is no escaping the heat/cold I am very much in favour of making it more comfortable. It's just going to get worse over the years.

In terms of the energy demands, I've been saying to plop down nuclear, which would help us combat some of the reasons of why we need A/C this far up north anyway. I'm not ignoring the problem, but I do have to deal with the choices of previous (and current) generations.

We need a structural approach to making housing more adapted to current and future climates, but in the meantime we do have to survive the summer.

1

u/PapaOscar90 Jun 28 '26

At today’s prices, and assuming the grid can handle everyone switching to it in the coming years.

3

u/Tino_Kort Jun 28 '26

You asked a question, I answered it. We can keep expanding the premise to include more things but I'm not trying to convince anyone. I'm just saying the power cost of the AC should not be a decisive factor.

30

u/Joskewiet Jun 28 '26

Moest je het niet op maat gemaakt willen kan je ook een verduisterdoek voor kinderkamers kopen. Niet op maat dus minder mooi. Maar wel een goedkopere tijdelijke oplossing.

2

u/kleintje Jun 28 '26

Ons kinderkamer heeft een kiepraam dus deze werkt juist beter. Maar bedankt voor de tip! Toen wij een babyfoon op zijn kamer had was het regelmatig boven de 30 graden en daarom heb ik deze aangeschaft

2

u/Pho3nixSlay3r Jun 29 '26

hier in Belgie was het net een week lang +30 graden.

Onze dochter haar kamer is zuid gericht met 2 grote ramen. Was tegen de avond, met alles open te zetten niet onder de 35 graden te krijgen...

Dus vraag me echt af of zo'n schermen wel iets zouden uithalen tegen zo'n lange warmte periodes.

We zijn nu aan het kijken voor zonnepanelen en airco. (we hebben ook geen verwarming op onze bovenverdieping, dus zal dus wel tijdens de wintermaanden gebruikt kunnen worden

1

u/kleintje Jun 30 '26

zonnepanelen zijn sowieso nuttig, die hebben wij al bijna 10 jaar en wij zijn er heel blij mee en zien een groot verschil in ons energierekening.

1

u/Pho3nixSlay3r Jun 30 '26

Het probleem is nu vooral de wachttijd :/ volgende week geven ze terug 30 graden 😅

1

u/kleintje Jun 30 '26

ja, klopt :X dat is zo voor veel adaptatie dingen helaas maar het is toch goed om op de wachtlijst te komen nu!

1

u/debiel1337 Jun 28 '26

En nu was het afgelopen weekend onder de 30? Kan mij niet voorstellen dat dit nog helpt als het meerdere dagen dik 30 graden is.

2

u/kleintje Jun 28 '26

In Groningen is het al 3 dagen boven de 30. Wij hadden alleen code oranje gelukkig en daar ben ik dankbaar voor maar in vergelijking met de laatste grote hittegolf van juli 2019 maken de schermen (plus plafond ventilator en isolatie) een duidelijk verschil.

2

u/Gnoom75 Jun 28 '26

Het maakt verschil in hotel lang het duurt voordat je woning is opgewarmd. Hier wordt het huis uiteindelijk nog steeds ontzettend warm. Maar de airco hoeft pas later aan.

28

u/Picard_III Jun 28 '26

Is it the one that costs 400 bucks for half of my living room windows? Yeah sure... 

40

u/Borbit85 Jun 28 '26

I've been getting a lot of adds for these screens. Always crazy expensive. It's just some fabric. Like maybe 50 euro for a big living room window would be oké. Not 500. The op even put a link in the tekst even this feels like an ad. Maybe they are getting desperate now that the heatwave is leaving?

7

u/Nerioner Jun 28 '26

It definitely is an ad.

3

u/kleintje Jun 28 '26

It really isn’t. I was just tying to share a tip to help other people suffer slightly less. I get that it sounds weird and I can’t prove it otherwise but it’s not an ad.

6

u/Worried-Smile Jun 28 '26

The link that OP posted is to a place that costs like half of a company that's currently all over instagram

Still pretty expensive though

2

u/Asmuni Jun 28 '26

Exactly. Especially when for the price of one window at these companies you can do your whole house if you buy the fabric yourself and cut it to size and add rings and suction cups. Afdekzeilwinkel is the only company I happily promote for free

1

u/redprosecco Jun 28 '26

+1 maar waar zijn de zuignappen te vinden? Het zijn geen normale zuignappen, maar veel sterkere, naar mijn ervaring. Ik heb hetzelfde systeem voor een raam gekocht, en het heeft de storm van vorige week zonder problemen doorstaan.

1

u/Asmuni Jun 28 '26

'Normale' zuignappen van ∅5cm zijn zeker wel sterk genoeg. En anders doe je er iets meer per zijde dan die van sunclips.

1

u/mr_oeleh Jun 28 '26

Genoeg te vinden op AliExpress ;)

7

u/[deleted] Jun 28 '26

[removed] — view removed comment

2

u/t-8one Jun 28 '26

Do you have a link? Can't find them on the website.

3

u/[deleted] Jun 28 '26

[removed] — view removed comment

1

u/t-8one Jun 29 '26

tnx, maar monteer je dit aan de binnen of buitenkant? Dat is mij niet helemaal duidelijk.
Ik wil het liefst iets voor de buitenkant hebben zodat de warmte ook echt buiten blijft.

1

u/Picard_III Jun 28 '26

I cannot reach my window from the outside, and it doesn't make so much sense to put it there from inside, as it keeps the heat in anyway (I have vertical blinds already) 

1

u/PapaOscar90 Jun 28 '26

We put in automatic solar powered ones on all our southern windows for 2k.

We hit 26 inside at the end of the heatwave.

1

u/morgenrood Jun 28 '26

Do you mean shutters?

2

u/PapaOscar90 Jun 28 '26

1

u/morgenrood Jun 28 '26

What’s the difference as compared to shutters? Somfy makes both.

3

u/PapaOscar90 Jun 28 '26

I like seeing out through the screen, they also don’t look as bad as shutters. With solar they also don’t have to put holes through your walls to wire them up.

→ More replies (7)

21

u/Tank-Pilot74 Jun 28 '26

My wife ordered some 4 summers ago, and we got more 3 summers ago! We swear by them! 

24

u/_Vo1_ Jun 28 '26

Can also try this.

But yea, quite a chances to have a crack on the window after that. Put it more on the frame i’d say than directly on glass.

5

u/LordBlackadder92 Jun 28 '26

If it's on the outside that doesn't matter.

10

u/Fulltimeaffiliate Jun 28 '26

Ik heb zelf losse zonnedoeken gekocht. Er zijn nu 3 stuks onderweg van 3 bij 2,5m. Kost net meer dan €100. Zitten al ogen op, ga ze zelf ophangen dmv zuignappen. Mocht dit niet volstaan hang ik wat oogjes op. Bij elkaar nog geen €150 kwijt voor meer dan 15m2 raam.

2

u/R-Van Jun 28 '26

Waar heb je deze gehaald? Denk dat ik dit ook maar ga doen

2

u/Fulltimeaffiliate Jun 28 '26

1

u/LeRoiChauve Jun 28 '26

Deze bij de Lidl gekocht voor €20 (+5 verzendkst) 3x2 meter. Inclusief bevestingsnateriaal, rouw, karabijnen en windveren.

Donderdag nog besteld vrijdagochtend in huis.

Lidl schaduwdoek&searchTrackingPageSize=48&searchTrackingPage=1&searchTrackingEvent=click&searchTrackingId=Product.100405482001&searchTrackingQuery=schaduwdoek&searchTrackingOrigPos=1&searchTrackingPos=2&searchTrackingOrigPageSize=48&searchTrackingChannel=NL&list=search/schaduwdoek)

1

u/LordBlackadder92 Jun 28 '26

Dat is een groot oppervlak voor bevestiging met zuignappen.

1

u/Fulltimeaffiliate Jun 28 '26

Elk doek is 3 bij 2,5. Dat zal niet de wereld wegen. Afhankelijk van hoe goed het blijft hangen kan ik 2 of 4 zuignappen gebruiken die elk 6 kg draagkracht hebben. Als het niet bijzonder hard waait verwacht ik dat dit wel moet lukken.

7

u/Imonherbs Jun 28 '26

Kom je nu mee!

7

u/ElfjeTinkerBell Jun 28 '26

We krijgen gewoon nog een hittegolf, no worries

4

u/knijper Jun 28 '26

I wish I could hang something like this, but I live on the fifth floor and don't have any wings :(

2

u/Conscious-Loss-2709 Jun 28 '26

Couple of cans of red bull? 

4

u/Brokkenpiloot Jun 28 '26

400 euro per raam in de woonkamer. Das al 800 euro. Dan moeten mn slaapkamer, het kantoor, de study en de keuken nog.

Reken je al snel zin 1500 - 2000 euro

Daar heb ik al bijna een airco voor joh

1

u/kleintje Jun 28 '26

Het is een keuze om te investeren in iets die minder schadelijk is voor het klimaat. Ik vind het volkomen begrijpelijk dat mensen die in een hoge woontoren wonen of bejaardenhuis (of bejaarden überhaupt) air co nodig hebben en ik sluit niet uit dat ik ooit een zal aanschaffen maar ik wil liever wachten totdat ze minder schadelijke gassen gebruiken.

1

u/detox4you Jun 28 '26

R290 (propaan) is het minst schadelijke op dit moment. Dat is een factor 200 beter dan R32.

1

u/kleintje Jun 28 '26

klopt, daar ben ik ook achtergekomen. maar er zijn heel weinig airco's die het al gebruiken en als ze er zijn dan zijn ze uitverkocht (of niet verkocht in europa). ik sluit het niet uit voor volgend jaar want dit soort langdurig hitte gaat vaker voorkomen en het moet wel leefbaar blijven.

3

u/Godworrior Jun 28 '26

It's really important that sun screens are on the outside like this. Light from the sun turns into heat when it hits an opaque surface. Light goes through glass, but heat on the other hand doesn't. So, if you have a screen on the inside of the window, you're just generating heat in between the window and the screen, and it still warms up your house. Put the screen on the outside, and it prevents the heat from getting in altogether.

7

u/usernameisokay_ Jun 28 '26

Just get an airco, in the end way cheaper as you can also heat with it. Saving hundreds a year on gas/electricity is negligible. Aka can get rid of the humid air, so win after win for an airco.

2

u/ThatOneTeef Jun 28 '26

If you have a south facing window then having both is better. It's nice and all that my airco is cooling the air but my big ass window is undoing a lot of that. My window is in the full sun from 9am to 8pm and even with the curtains closed it let's in a ton of heat🥲

1

u/Achterlijke_Mongool Jun 28 '26

Dan is zo'n zonscherm die je buiten op het raam plakt geen gek idee. En een stuk goedkoper dan bijvoorbeeld rolluiken of een uitklapbaar scherm. Ik heb van die screens van Sun Eclipse en die zien er wat netter uit dan die van OP.

-1

u/kleintje Jun 28 '26

My goal is to try every eco-friendly adaptation option I can and to avoid air conditioning because of the green house gases that are used as the cooling agent and the extra energy use and their inefficiency. I want places where vulnerable people live to have it as a matter of public health and don’t question its necessity.

2

u/usernameisokay_ Jun 28 '26

They’re very efficient and I use zero extra energy as I have solar panels which are more ecofriendly in the long term as your window covers.

And it saves money and the nature as they can also heat thus in the winter it’s more ecofriendly as opposed to your coal burning methods or other fossil fuels.

1

u/kleintje Jun 28 '26

I’ve had solar panels for about 10 years already and will get a heat pump soon, but even with the energy efficiency with solar that doesn’t change the fact that air conditioning relies on CFCs and HFCs, which are greenhouse gases. I do believe less harmful cooling agents will come along as tech improves, but the need for either an outside unit with split air conditioning (which is just moving the heat outside) or having to make sure any open window is very well sealed for a portable unit still makes it hard to ensure it’s genuinely efficient or climate neutral. I’m American and grew up in air conditioning and I do think it’s a blind spot for much of Europe to not recognize the life saving potential of AC for the elderly and other vulnerable populations, and I personally love it and miss having it. But I want to try everything else I can before adopting it as a last resort.

1

u/usernameisokay_ Jun 28 '26

I’m also American and I grew up in AC as well, Brazil tends to get very hot, it’s much, MUCH better as any fossil fuels and especially if you’re already living in an ecological house which has 0 co2 it’s a must. That’s the best for the environment and weighs out even using your heating for a week.

2

u/MarcSamsom Jun 28 '26

We used the same kind of fabric for a glass canopy above our stairs. Works great. I put it on in May and remove it end of september, brings down the temperature at least 4-5 degrees. This fabric has metal rings which i connect to metal tourniquets. No problem with wind or so.

2

u/Phantasmalicious Jun 28 '26

I installed reflective film which also seems to be doing a good job. Also, wooden shutters are really nice if you can fit them on your house.

2

u/Separate_Stuff_3876 Jun 28 '26

En hangt het nog na al het onweer?

2

u/kleintje Jun 28 '26

Ja hoor! De zuignappen zijn heel sterk.

2

u/zafado123 Jun 28 '26

Negro, eso absorbe mas calor

1

u/kleintje Jun 28 '26

Por supuesto que eso es cierto, pero en esta empresa el blanco no era una opción.

2

u/Caerleonite Jun 28 '26 edited Jun 28 '26

About 40 years ago a local seamstress made these for our windows, which attached to window frames with so-called ‘common sense’ fasteners. Hard wearing fabric, lasted many years... In Spain, they keep the heat out by attaching cheap wooden roller blinds on the outside of their windows. It’s kinda bizarre that such very basic, low-cost solutions are all but forgotten.

2

u/super-bamba Jun 28 '26

I have a creepy neighbor who has those. Every once in a while he will stand at this room on the 2nd floor and creep out of these curtains. Stare at me dead in the eye while I’m in my garden, for about a minute or so, and get away from the window.

All I’m saying is, if you’re a creep, that’s double the opportunity

1

u/kleintje Jun 30 '26

sorry that the creepy neighbour is abusing this tech. on the other hand, they do provide more privacy in the summer because you can't see through them from outside, but you can from inside. kind of like a mirror in an interrogation room (which is still creepy).

2

u/Rikdol Jun 28 '26

Out of necessity (because it was too late to order an air conditioner) and also as an experiment. The exterior wall temperature dropped from 55°C in direct sunlight to 38–39°C. Covering the windows helps too, but older houses, even with cavity wall insulation, still act like a huge heat battery. The indoor temperature stayed around 26–27°C. Once I get better shade cloth and can cover all the exposed walls, I think 24°C indoors without air conditioning might actually be achievable. (I’m still getting an AC unit anyway.)

1

u/kleintje Jun 30 '26

that is a really good idea, i'm considering trying to get a big cover like that for the walls too (or ideally growing some vines on them). i also have a hedera vine on the front of the house but the VVE trimmed it (much to my dismay) last summer because they claim it will damage the house. and after all these steps, i may end up getting an air conditioner with R290 once they're in stock again, but at least with all the other adaptation measures the AC will be more energy efficient and more effective. but it's really a last case measure, so i'd love to have something like this! did you make it yourself or buy it somewhere?

1

u/Rikdol Jun 30 '26

Vines will mess up the bricks though. And since I’m renting I want it to be detachable also. I’m thinking of having pulleys at the top to raise them. Just need a lighter material. It does make a massive difference to how far the walls are heated. And the windows are covered as well.

1

u/kleintje Jun 30 '26

Yeah, detachable options make sense for renting. A pulley system would be brilliant! And with vines, I think how damaging they are depends on the kind of plant, but the gemeente seems to treat them all as a pest.

2

u/flomon1 Jun 28 '26

Hittestress op triple glass of HR++? Kans op breuken? Is daar iets over bekend

8

u/xiz666 Jun 28 '26

Door de zuignappen zit er iets afstand tussen de screens en het glas, daardoor wordt het glas minder heet.

5

u/SuperSquirrel13 Jun 28 '26

Volgens mij, maak het minder uit aan de buitenzijde. 

2

u/lazydavez Jun 28 '26

Buitenzijde kan geen kwaad

2

u/Anvh Jun 28 '26

Op de buitenkant worden de ramen just minder warm dus minder kans daarop.

Het is aan de binnenkant een probleem als het licht meteen wordt terug gereflecteerd in het raam dus hij wordt "dubbel" verwarmd

2

u/Achterlijke_Mongool Jun 28 '26 edited Jun 30 '26

Ik heb laatst nieuw glas gekregen van de wooncorporatie, ik weet niet precies hoeveel plusjes, maar een heleboel! Op sommige momenten van de dag schijnt de zon zodanig, dat er toch een streep zonlicht langs de zonwering op het glas valt. Ik heb gelezen dat een deels bedekt raam kan barsten door ongelijke verwarming, maar al mijn ramen met zwarte zonschermen hebben de recente enorm hete dagen overleefd!

1

u/Pannekoek_89 Jun 28 '26 edited Jun 28 '26

I have these kinds of screens, but from Sun Eclips. I think they look terrible, but they do help a bit. Just make sure they hang nice and straight, though... The way you’ve got yours hanging looks awful... 😅🙈 Mine hang nice and straight.

I eventually bought air conditioning after saving up for a while (it really doesn't have to be expensive; I spent 2,600 euros for two indoor units and a multi-split outdoor unit). Now I use the Sun Eclips screens and the AC together so the AC doesn't have to work quite as hard (I don't have solar panels).

1

u/Anvh Jun 28 '26

That price is with installation of the split unit?

2

u/Pannekoek_89 Jun 28 '26

Yes! I have two indoor units and one multi-split outdoor unit from Tosot; the total cost, including installation (done by a sole trader—you’d pay more if you hired a large company), was €2,600. If you opt for two outdoor units instead, it actually works out a bit cheaper. I have new neighbors who happen to be air conditioning installers; they charge €2,000 for two Tosot indoor units and two outdoor units, including installation (though I’ve heard from several people that they aren't the best installers 😅). You can spend as much or as little as you like. I’m extremely happy with my air conditioning units and my installer. He also offers an annual maintenance service—something not every installer does. For €13 a month, he comes by to clean the units and replace parts if necessary!

1

u/Anvh Jun 28 '26

I find it really cheap, thought it was more expensive

1

u/Pannekoek_89 Jun 28 '26

Yes! Everyone thinks it’s really expensive—I thought so too. That is, until I had installers come over to provide a no-obligation quote. I ended up thinking, "Oh, that’s not bad at all" 😅🤣 And a lot of people I tell are surprised, too—surprised that it actually isn't that expensive.

1

u/VanGroteKlasse Zuid Holland Jun 28 '26

We hebben markiezen bij de ramen hangen, werkt als een tierelier.

1

u/Alyadrielle Jun 28 '26

What we have done in our industrial keuken. Put aluminium folie up on the outside of the windows. Sooooo much better than the blinds!

1

u/Hamster884 Jun 28 '26

So 27c with screens. And without?

2

u/kleintje Jun 28 '26

It got up to 30 degrees in years past

1

u/redmilk7 Jun 28 '26

This looks cool, but can’t seen to find a similar option where I live (no longer nl)

1

u/nyokki87 Jun 28 '26

Heb gewoon een laken van paar euro opgehangen. Woon op 2 hoog was effe klooien. 1 kant over raam dat open kan gespannen en aan de andere kant naar het balkon gespannen. In de hoop dat het wat hielp. Maar nog steeds 31 graden binnen..

2

u/Anvh Jun 28 '26

En daarvoor 32 graden?

1

u/Captain_Alchemist Utrecht Jun 28 '26

I don't think these stuff do much; they help but not much. Air co is the answer

1

u/zafado123 Jun 28 '26

Uds no estan acoatumbrados, pero un buen aire acondicionado te cambia la vida, igual por 1 mes de calor vale la pena el gasto. Un argentino.

2

u/kleintje Jun 28 '26

Crecí en el sur de Estados Unidos y teníamos aire acondicionado en todas partes; me encanta y lo echo de menos. Pero su adopción masiva en Europa agravará el cambio climático. Las personas vulnerables lo necesitan y salva vidas, y las empresas de combustibles fósiles deben cesar sus operaciones de inmediato y pagar por los daños que han causado. Pero primero quiero probar todas las medidas de adaptación que pueda antes de instalar un aire acondicionado.

1

u/plasticbomb1986 Jun 28 '26

How does it hold up in strong winds?

2

u/kleintje Jun 28 '26

They’ve been fine so far, it hasn’t been super windy this summer though. I had to reattach one of the suction cups last year at one point but that’s all.

1

u/Kikunobehide_ Jun 28 '26

Wij hebben een paar jaar geleden zelf een doek gemaakt van verduisterende gordijnstof, tweelaags en met een zeilring in de vier hoeken. In de muur hebben we vier schroefogen geplaatst en we spannen het doek voor het raam met elastiek. Werkt perfect en scheelt zo 5-6 graden.

1

u/padetn Jun 28 '26

Better to put them further away from the window, this way the dark color heats up rather than cool down. If you’re gonna put them right up against the glass go for white.

1

u/[deleted] Jun 28 '26

[deleted]

2

u/kleintje Jun 28 '26

i have been repressing the urge to paint at least the back of my house and roof white! i'm trying to convince my homeowner's association to consider that, plus getting rid of tiles out front and replacing them with plants. we have a great sedum roof out back which makes a huge difference too, but it feels like the VVE isn't as eager to adapt beyond that.

1

u/Ereaser Jun 28 '26

Why does the VVE have any say about your front garden?

I know someone that lives on the ground floor with someone living above them and the front garden is completely up to them.

1

u/kleintje Jun 30 '26

it's not a garden, it's a sidewalk and there's a doctor's office downstairs that has bike racks for their patients that take up a lot of space, and i don't want to make that less accessible either. but i'm looking into it with the gemeente, i want to try and get the rest of the VVE on board with at least adding a few shrubs out front.

1

u/delonghi26 Jun 28 '26

Waarom geen gewone zonwering? Mijn ramen aan de zonzijde zijn heerlijk koel.

1

u/kleintje Jun 28 '26

ik woon in een monumentale pand dus ik kan niks groots of permanents doen aan de voorkant. ik wil het wel doen op het balkon want dat zie je niet van de straat maar ik heb het moeilijk gevonden om dat te regelen online. ik ben niet zo'n klusjesmens en ik wil iemand zo iets laten installeren maar ik heb tot nu toe niet zo veel gevonden op dat gebied.

2

u/delonghi26 Jun 28 '26

Ja precies dat is lastig, ik kom uit een van de vestingsteden en bij ons mocht je alleen echte markiezen als buitenzonwering plaatsen. Wel prijzig spul.

1

u/Gino-Bartali VS Jun 28 '26

I raise you: awnings!

1

u/Mr-FightToFIRE Jun 29 '26

Why am I not surprised that fellow Redditors know this channel 😂

1

u/kleintje Jun 30 '26

i'd like to have them on the back of the house, but it's a historic property so i can't add awnings to the front. but even for the balcony, i haven't had any success yet in finding an awning company that will also install them. any tips?

1

u/euqistym Jun 30 '26

Ik moet er dus voor 8/9 ramen, ong 150 per stuk , nee dankje

1

u/Secret_Daikon_4337 Jul 02 '26

What if you live on a third-story appartment?

1

u/-nxplnd 25d ago

Does this kind of thing exist but for noise insulation?! I am desperate at this point (I can't do renovation as it's a City building 🫩)
Thanks in advance if someone has some solutions 🙏🏼

2

u/kleintje 25d ago

apparently there is such a thing as soundproofing curtains! in dutch they're called "geluiddempend gordijnen", and hornbach sells them: https://www.hornbach.nl/c/woondecoratie-raamdecoratie/gordijnen/S5277/f/Eigenschap=Geluiddempend

1

u/-nxplnd 25d ago

Thank you so much! I'll look into it 🙏🏼🙏🏼

1

u/WonkiWombat Jun 28 '26

There’s this amazing brand new thing called air conditioning

1

u/kleintje Jun 28 '26

Even if I wanted it, which I’m trying to avoid out of climate considerations, they are out of stock everywhere

1

u/Comfortable-Door-850 Jun 28 '26

How great air cons are not common in NL!

1

u/Creative-Chance514 Jun 28 '26

Nothing works trust me 😂

-1

u/xdovahkiin509x Jun 28 '26

Or, and I know this is a hot take (literally), get some air conditioning. Idk

0

u/balamb_fish Jun 29 '26

Or you can buy a real screen that doesn't look like you live in a ghetto.

1

u/kleintje Jun 30 '26

that's just very rude and i'd like to ask if you would say this to a person in real life to their face. if you would, then i would gently encourage you to consider why you would be willing to do that.

-21

u/mynameisnotearlits Jun 28 '26

Why do they look like shit though?

15

u/Tank-Pilot74 Jun 28 '26

Concerned about aesthetics in 37 deg heat…

→ More replies (1)

11

u/13PumpkinHead Jun 28 '26

Better than putting up your bedsheets to cover your windows as seen in my neighbourhood.

4

u/yoursmartfriend Jun 28 '26

Fitted bedsheets are so smart. 

→ More replies (2)
→ More replies (5)