What is the best foam board insulation for my project?

Choosing the right foam board depends on your needs. <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/EPS/N-5yc1vZbaxxZ1z0w1xr?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">EPS</a> is affordable and offers decent insulation, while <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/XPS/N-5yc1vZbaxxZ1z0w1xo?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">XPS</a> is denser and more water-resistant, making it ideal for below-grade applications. <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/ISO/N-5yc1vZbaxxZ1z0w1ut?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">Polyiso</a> provides the highest R-value but can be more expensive.

Can I use foam board insulation in my attic?

Foam board insulation is great for <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/Attic/N-5yc1vZbaxxZ1z1bkhc?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">attics</a> as it provides an excellent thermal barrier and can be easily attached to the roof sheathing. Its moisture-resistant properties also help prevent condensation and potential damage.

Which foam board insulation is the top-rated?

The <a href="https://www.homedepot.com/p/SilveRboard-1-in-x-2-ft-x-48-in-R5-Radiant-Acoustic-Insulation-Kit-STC-19-12-sheets-96-sq-ft-SB12AKIT/205975329?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">1 in. x 2 ft. x 48 in. R5 Radiant Acoustic Insulation Kit - STC 19 (12 sheets) - 96 sq. ft.</a> is one of our top-rated foam board insulation.

Why is foam board insulation so popular?

Foam board insulation is popular because it has some excellent features that make it a great choice for many projects, like <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/Plywood/Formaldehyde-Free/N-5yc1vZbaxxZ1z1bjg2Z1z1bjik?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">formaldehyde free</a>, <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/Plywood/Mold-Resistant/N-5yc1vZbaxxZ1z1bjg2Z1z1bjgs?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">mold resistant</a>, and <a href="https://www.homedepot.com/b/Building-Materials-Insulation-Foam-Board-Insulation/Plywood/Vapor-Retardant/N-5yc1vZbaxxZ1z1bjdiZ1z1bjg2?emt=plpfaq_2410_foamboardinsulation" style="text-decoration: underline;">vapor retardant</a>.

What kind of adhesive do I need to attach foam board insulation to my walls?

Most foam board insulation is designed to be attached to a construction adhesive and is available in tubes or cartridges. Ensure the adhesive is specifically designed for foam insulation and the surface to which it is attached.