Will this keep the heat from the sun from my bedroom if i stick it to the outside of the window?

You may be better off with some transparent 'solar' reflective film that you can apply more safely on the inside of the window. A good one will still allow a lot of visible light in, but reflect back out the 'heating' UV and Infrared wavelengths. Will also help to keep-in the cool in the room in summer, and keep-in any heat in the room in the winter.

Hello, What is actual thickness of the foil without the backing?

It is approximately 0.1mm thick.

Is this suitable to use under my mantlepiece to protect it from the heat of my wood burner?

I can’t be specific here but I bought it as I was building a panel to go behind a gas fire and according to the advertisement for this aluminium/fibreglass film it was more than adequate for protecting the timber frame I had built. However I then covered the whole panel with ceramic tiles. I would check the heat output of your stove against the advice on the product. I can tell you it was very easy to use.

What temperature will this barrier withstand?

Not sure, but I used it under a shelf which was over a convection fire which heated the underside, and it certainly protected that surface. Hope that helps.

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BBTO Heat Reflective Sheet Adhesive Backed Aluminized Fiberglass Heat Shield Tape Protection Barrier Heat Shield Resistant Material for Hose and Auto Use Heat Insulation Sheet(Silver, 36 x 48 Inch)

Product ID: 224742446

Details

Brand
BBTO
Material
Glass Fiber an
Number of Packs
1
Product dimensions
25L x 20W
Recommended uses for product
automotive and

📏Generous 36 x 48 inch sheet, customizable size

🔥Withstands extreme heat up to 1200°F

🛠️Adhesive-backed for easy, professional application

¥5438

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Shield your gear like a pro—stay cool, stay ahead!

DURABLE RELIABLE - Made from aluminized fiberglass fabric that resists heat, chemicals, oil, and grime.
VERSATILE MULTI USE - Perfect for hoses, wires, painted surfaces, and more—ideal for DIY pros and automotive enthusiasts alike.
ULTIMATE HEAT DEFENSE - Reflects and blocks radiant heat to protect sensitive surfaces and components.
EFFORTLESS APPLICATION - Peel-and-stick adhesive backing ensures a clean, secure, and professional finish every time.
CUSTOMIZABLE LARGE SHEET - Trim to fit any project, from automotive repairs to home insulation needs.

The BBTO Heat Reflective Sheet is a large, adhesive-backed aluminized fiberglass heat shield designed to protect automotive parts, home repairs, and sensitive components from extreme radiant heat. Measuring 36 x 48 inches, it offers customizable coverage with durable, chemical-resistant material that’s easy to apply and built to last.

Specifications

ASIN	B08GG3RPYL
Best Sellers Rank	8,909 in DIY & Tools ( See Top 100 in DIY & Tools ) 32 in Panel Insulation
Brand	BBTO
Country of Origin	China
Coverage	Protects various parts and components from radiant heat
Customer Reviews	4.3 4.3 out of 5 stars (2,394)
Item Dimensions L x W	25L x 20W centimetres
Item Weight	263 g
Manufacturer	BBTO
Material	Glass Fiber Fabric with an Aluminized Outer Facing
Number of Items	1
Number of Packs	1
Part Number	BBTO-Heat Shields-H7865
Recommended Uses For Product	automotive parts protection, home repair, and general heat insulation purposes
Unit Count	1.0 count

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

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Great price for an authentic product. Fast international shipping too!

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¥5438

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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