Heat Shield Your Windows on the Cheap

This is more just a note for myself so I don't forget, but I found what looks like a good solution to reducing heat in my office - which is the only room in the house that gets light in from large windows, and from two sides.

Possible Solutions

• New windows are not an option when renting (and hecka pricey)
• Blackout curtains make it dark, but they actually capture the heat inside.
• Window Heat Film can be a great solution... but only for small windows
• Aluminum foil is the cheapest option, and looks the worst.
• Perforated Reflective Barrier Foil isn't as cheap, but looks slightly better.

Best Value

This stuff:

Buying Options

"US Energy Products Radiant Barrier Reflective Foil Insulation 500sqft (4ft x 125ft Roll) Commercial Grade, No Tear, Double Sided, Perforated Aluminum (Attic Insulation, Windows, Garages, Greenhouses)"

• https://amzn.to/2T5dpMg

"500 sqft Radiant Barrier Shielding Reflective Insulation Layer (4FT×125 FT) Perforated and Breathable Double-Sided Aluminum foil Woven Insulation Material, (4FT×125FT)"

• https://amzn.to/2SZTs9Z

You can only really find it 4' (4 feet) or (48" inches). Well, there are also 51' if you're willing to buy in bulk, and I did find a few small sheets of 60", but I can't find it again (I only need about 10 feet, so 6x10 would work for me).

• 48" (~120cm) See above
• 51" (~130cm) https://amzn.to/3vZqW6P
• 60" (~150cm) https://atticfoil.com/index.php/products/60-wide-super-wide/

Or, if you're planning ahead and can wait 60 days for shipping, you might find a few more options here:

Perforated Reflective Foil on Alibaba

• https://www.alibaba.com/trade/search?IndexArea=product_en&SearchText=reflective_foil_perforated&f0=y&moqf=MOQF&moqt=MOQT500

See also: https://www.youtube.com/watch?v=uO_xbi5tXqc.

Buy me a coffee

(you can learn about the bigger picture I'm working towards on my patreon page )