KEEPING THE SUN OUT WITHOUT GOING BROKE

Bubble wrap on the windows—yeah, I’ve done that in my workshop out back. It’s surprisingly effective for something you probably already have lying around from old Amazon boxes. Not exactly a design statement, but when it’s roasting outside, I’ll take function over form every time.

Last year, I tried using those cheap reflective emergency blankets (the Mylar kind) taped to the inside of the window frames. They’re super thin and block a ton of heat, though I’ll admit they make the room look like a weird spaceship from the outside. Still, it dropped the temp in my south-facing bedroom by at least 5 degrees on brutal afternoons. Downside: you lose most of your natural light, so it’s a trade-off.

I’ve also rigged up some homemade exterior shade sails using canvas tarps and bungee cords. Not pretty, but they kept the direct sun off the worst windows and made a noticeable dent in how often the AC kicked on. Honestly, half the battle is just blocking that sunlight before it even hits the glass.

I hear you on the bubble wrap—did that in my basement windows one winter and it’s wild how much it helps. For summer, I’m all about exterior shade too, but I’ve always wondered if those stick-on window films are worth the hassle. Anyone tried those peel-and-stick UV blockers? I’m tempted, but not sure if they’re just a pain to put on or actually make a dent in the heat. Mylar’s great for heat but yeah, spaceship vibes aren’t really my thing either...

Tried the peel-and-stick UV films on my south-facing windows last summer—honestly, not as much of a hassle as I expected. The trick is to use a spray bottle with soapy water and a squeegee, otherwise you get bubbles everywhere and start inventing new curse words. They did cut down the glare and I noticed the living room stayed a few degrees cooler, but it’s not a miracle fix. Still, way less spaceship-y than Mylar, and you can actually see out. Just don’t expect it to replace actual shades or curtains if your place bakes in the afternoon.

Yeah, the UV films are definitely less of an eyesore than tinfoil or emergency blankets. I tried them in my old apartment and they helped a little, but didn’t do much for the heat from the window frames themselves—those still radiated warmth. Honestly, blackout curtains plus a tension rod have been the most effective for me, though they do make the room feel like a cave. Not ideal, but cheap and easy.

I totally get what you mean about the blackout curtains making things feel like a cave. I used to have them in my bedroom, and yeah... it was pitch black even during the day, which was a bit much sometimes. One thing that helped me was using light-colored blackout curtains—they still blocked most of the heat but didn’t make the room feel quite so gloomy. For the window frames, I ended up sticking some weatherstripping foam around the edges. It’s not pretty, but it cut down on a lot of that radiating heat, especially in the afternoons. Cheap fix, too.

LIGHT-COLORED CURTAINS VS. WINDOW FILM—ANYONE TRIED BOTH?

I hear you on the blackout cave thing. My partner swears by pitch-black rooms, but I always end up feeling like I’m living in a bunker. I get that light-colored blackout curtains are a decent middle ground, but honestly, I’m not convinced they’re the best fix for heat. Maybe it’s just my place (1950s brick, west-facing windows), but even with the thickest curtains, it still felt like the sun was baking the room by late afternoon.

Weatherstripping is a solid move for drafts, but for radiant heat? I’ve found it barely makes a dent unless your windows are super leaky. What actually helped me more was putting up those reflective window films—yeah, the kind you stick right on the glass. They’re not glamorous and can be a pain to apply at first (bubbles everywhere if you’re not careful), but once they’re on, I noticed a big difference in both temperature and how much the AC runs. Plus, you still get some daylight, so it doesn’t feel like you’re living in a cave.

Not gonna lie, I was skeptical because the cheap ones look kind of tacky from outside, but honestly, I’d rather have that than sweat through another summer or pay more for utilities. If privacy is an issue, there are some that have a mirrored finish during the day—though that’s probably not everyone’s style.

Curtains are fine if you want something quick and easy, but I’m just not sold on them as a real heat solution unless you double up with something else. Anyone else tried window films or have another low-budget hack?

Curtains are fine if you want something quick and easy, but I’m just not sold on them as a real heat solution unless you double up with something else.

I get where you’re coming from, but I’ve actually had the opposite experience in my place (built in the late 60s, lots of single-pane windows). I tried the reflective film one summer—spent a Saturday cursing at air bubbles and swearing I’d never do it again. It did help with the heat a bit, but honestly, I was surprised how much sunlight it blocked. My living room felt kind of gloomy, and I missed being able to just pull open the curtains for full daylight.

Switched over to light-colored thermal blackout curtains the next year, and while they didn’t *totally* stop the heat, it was a noticeable difference—especially if I made sure to keep them closed before the sun hit the windows. The trick for me was hanging them a few inches out from the wall and letting them drape all the way to the floor. That little air gap seemed to make a difference, kind of like a buffer zone. Plus, way easier to throw in the wash when they get dusty.

Not saying films don’t work—my neighbor swears by his, especially for privacy—but I think curtains can do more than people give them credit for if you go for the right kind and really cover the window area. And yeah, it’s not perfect, but I’ll take a little extra heat over living with that weird mirrored look from outside. Guess it just depends on what bugs you more: heat or losing that bright daylight.

One thing I haven’t tried yet is those old-school exterior awnings. A guy down the block put them up and says it made a bigger difference than anything he did indoors. Might be worth a shot if you’re allowed to add stuff outside.

One thing I haven’t tried yet is those old-school exterior awnings. A guy down the block put them up and says it made a bigger difference than anything he did indoors.

Funny you mention awnings—I put some up last summer after my wife got tired of me taping foil to the windows like we lived in a spaceship. Not the prettiest, but honestly, they work. My living room doesn’t feel like a greenhouse anymore, and I can actually sit on the couch without sticking to it. Curtains definitely help, but stopping the sun before it hits the glass seems to be the real game-changer for us. Only downside: climbing a ladder in July heat is no joke...

Curtains definitely help, but stopping the sun before it hits the glass seems to be the real game-changer for us.

Couldn’t agree more. I tried blackout curtains and those stick-on reflective films, but honestly, they only did so much—still felt like sitting in an oven by 3pm. Putting up awnings on our west-facing windows made a night-and-day difference. Now, I don’t dread walking into the living room after work.

Did you notice any change in your AC bill? Ours dropped a bit, not huge, but enough to notice. Only thing I’m still figuring out is how to keep them looking decent—mine get dirty faster than I expected, maybe because of all the trees nearby.

Curious if anyone’s tried those retractable ones? I went with fixed metal because they were cheaper, but sometimes wish I could pull them back in winter to let the sun warm things up.