# What is the difference between r13 and r15 insulation

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## Insulation R-VALUE - What is R-Value?

Insulation Tips and Practices - The Home Depot

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I would have it changed to meet your contract. To the argument that you can't get R15 in 2x4 framing, see here. I've only had unfaced fg installed, so staples would be superflous. Missouri spans both zones, so the requirement differs depending on your location. There is no pushing back and there is no hassle; it is simply a matter of following a contractural agreement. Would you be okay with this installed in your house? The insulation is stuck to the paper so it won't sag after the drywall is installed regardless of how its stapled.

In a 2x4 wall in the northeast, R13 is mishkanet.comr, R15 is the same Can you then use the R15 fiberglass insulation because the depth is the same But I'd be interested in knowing the difference between my.
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So let's talk for a second about R-value, right. That's all we hear about when we talk about insulation. The r-value of this and the r-value of that but what does R really mean anyway? Well R, stands for resistance. And the resistance and what it's resisting is heat flowing. So resistance to heat flow is basically the definition of r-value.

## Let's Save Energy - 'R' Values...What They Mean

This is a critical question. Adding too little insulation means a colder house. Adding too much insulation means insulation that isn't properly doing its job, thus a colder house. The permanent nature of wall insulation compounds the problem: once the insulation is in, it's in there forever. Or at least, the insulation is there for years until the next time the drywall is torn out.

Learn how these standardized rating systems ensure consistency in energy performance. A standardized insulation rating system ensures consistency, with insulating materials rated in R- and U-values. R-values represent resistance to the flow of heat; the higher the R-value, the greater the resistance and the insulating value. U-values are the direct opposite, representing the amount of heat that escapes through a material. The lower the U-value, the slower the rate of heat flow and the better the insulating quality. Ultimately selecting which product and value to use depends on many factors - particularly thermal load; regardless, ASHRAE's new above-deck roof insulation standard is a good place to start, as it jumped 33 percent, from R to R, in five of six climatic regions. Still, that doesn't necessarily mean that more insulation is better.

This post was contributed by a community member. The views expressed here are the author's own. We have all heard about insulation R values right? R11 vs. R19 vs.