What is the R- value?

The R value varies per application. The more air space there is results in higher efficiency, so, if used in a typical installation such as stapled to rafters or across joists where there is at least several inches of air space it will have a much higher r-value than if it's mounted directly to a surface, for example, as a wrap for ductwork. The product description states: "Has R 16.8 value for crawl space applications and R 6.13 value for basement walls." Those are much higher r-values than I've seen before through testing (more than double), though may represent the max value that can be achieved if installed with a very large air space for those type of applications.

How can I use this for a feral cat winter box shelter? This poor terrified cat survived last horrid winter but I have to better this year. Can I put this on the outside of a sturdy box & still wrap the box with a garbage bag to protect it from water? Will it work? I will put blankets inside. Oh I hope I have come a…

Feral cats are wild, and cannot be socialized. You are doing a great thing by supplying an insulated box for the feral cat in your area. We built a box using this insulation. We bought an 18 gallon plastic tote for under $7 and the next smaller size for $4.50 from that big box store. We wrapped this bubble insulation around the smaller tote, put it inside the larger tote, added a polyester fleece blanket in the bottom ($2.88), covered the top with more bubble insulation, then put the plastic lids on. We cut a 6" diameter hole in the side of the two totes for the cat to use as an entrance (and put duct tape around the hole to hold the two boxes and insulation together, and we duct taped a flap over the entrance. Make sure it's up off the ground so snow and rain doesn't leak inside. Closed cell foam would work better for insulation, but it's very expensive.Note: The polyester fleece blanket is perfect because it won't absorb water and stays warm even when wet.

Global Trade Identification Number	00716511516014
Manufacturer	Reflectix
UPC	629136004135 716511516014 071651151601 735090194642
Item model number	ST16025
Product Dimensions	25.4 x 40.64 x 25.4 cm; 408.23 g
ASIN	B000BQSYRO

ST16025 Staple Tab Insulation 16 Inch x 25 ft Roll

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