How is everyone securing this to their rv windows? we don’t want to use spray adhesive as suggested by a few reviews. thanks.

We used industrial strength Velcro. Lined the edges and bottom of each window just outside the window frame and cut the insulation to match. The industrial strength Velcro adhesive has continued to hold up even with 100+ degree days. This way we can remove it when we want. And it doesn’t look bad - nice and tidy over the windows.

What is the R Value of the 5mm?

In the description... R-value up to 15.67 ( with one layer), up to 21.10 ( with two layers).

Has anyone used this over crawl space vents to keep it warmer during winter?

It would work well, cut 3/8" larger than both dimensions and press fit. I should caution you, unless you are having a problem with freezing pipes, you should never close the vents in the winter, moisture will collect on the underside of the house above the insulation causing mold. Air movement in the un-conditioned space under your house is critical.

Smartshield 5mm Foil Foil | Desertcart Sri Lanka

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Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛡️ Stay cool, save cash, and upgrade your space with SmartSHIELD!

MULTI USE POWERHOUSE - Perfect for attics, walls, metal buildings, and even wine cellars—insulation that adapts.
BUILT TO LAST PROTECT - Class A fire rating with tear & puncture-proof industrial-grade foam core.
EFFORTLESS INSTALLATION - Lightweight, flexible roll cuts easily with scissors—no mess, no fuss.
ULTIMATE THERMAL DEFENSE - Reflects 95% of radiant energy to slash heating & cooling bills.
MOISTURE MOLD RESISTANT - Vapor barrier blocks condensation, staying effective in humid conditions.

SmartSHIELD is a 5mm thick, 48''x50ft reflective insulation roll featuring a foam core radiant barrier with R17 insulation value. It reflects 95% of radiant heat, meets ASTM C1313 standards with a Class A fire rating, and includes a vapor barrier to prevent moisture damage. Industrial-grade and tear-resistant, it’s easy to cut and install, making it ideal for commercial and residential applications like attics, metal buildings, and crawl spaces—delivering year-round energy savings and superior thermal protection.

Specifications

ASIN	B08JS7TK93
Best Sellers Rank	#35,988 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #198 in Weather Stripping
Brand Name	INSULATION MARKETPLACE
Coverage	2500 square feet
Customer Reviews	4.7 4.7 out of 5 stars (1,004)
Item Dimensions L x W	600"L x 48"W
Item Thickness	5 millimeters
Manufacturer	Insulation Market Place LLC
Manufacturer Part Number	SmartSHIELD -5
Material Type	Aluminum, Polyethylene (PE)
Model Number	SmartSHIELD -5
Recommended Uses For Product	Metal Building insulation, Steel building insulation, Pole Barn insulation, Attics, Ceilings, Walls, Steel Buildings, POLE BARNS, Roofing, Concrete Floor, Radiant Heat in a Concrete Floor, Radiant Heating, Water Heater Tank, Water Pipe and Air Duct, Crawl Space, In Ground Swimming Pools, Shed, Fish & Hunting Shelter, Cooling Room, Cold Chamber or Wine Cellar, Concrete Block Wall, Cavity Wall for M…
UPC	686091709383
Unit Count	1 Count

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₨495637

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered 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 Sri Lanka.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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SmartSHIELD-5mm Foil/Foil

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