Spray Foam & Rigid Foam Insulation Comparison Near Charleston, Lexington, Georgetown

Compare Spray Foam vs. Rigid Foam Insulation in Charleston, Lexington, Georgetown & Johnson City

spray foam install

Best-suited for big jobs. Two-part spray foam provides excellent air sealing and insulation and is often sprayed against open framing, as in this attic installation.

Remember when a pink panther held the monopoly on home insulation? Those days are gone. Today homeowners, contractors, and building scientists (the experts who study home energy performance) spend a lot of time talking about foam insulation. But this newly popular insulation can come in many forms. Right now, let's consider the differences between spray foam and rigid foam. More specifically, we can compare the closed-cell spray foam that requires two components to be mixed at the application nozzle, and the rigid foam insulation boards that come in different thicknesses.

Both two-component spray foam and rigid foam are useful for improving home energy performance. Sometimes it can be difficult to decide whether spray foam or rigid foam is best for a particular application.

Find Out Which Insulation is Right for Your Lexington, Georgetown & Johnson City Area Home

Insulation is essential for energy efficiency, and nobody knows insulation better than Reed's Sprayfoam Insulation. Call or email today to arrange for a Free Estimate for home insulation in Charleston, Lexington, Georgetown, Johnson City, and other areas including Richmond, Ashland, Frankfort, Barboursville, Huntington, Paintsville, Mt. Sterling, and more.

The Pros & Cons of Spray Foam and Rigid Foam Insulation

Two-Component Spray Foam


  • Provides both insulation and air sealing; air sealing is excellent because the foam expands to fill gaps and cracks.
  • High R-value -about R-7 per in. depending on the formulation.
  • Speedy installation. Foaming can be done in a fraction of the time it takes to cut, fit, and seal rigid board insulation.
  • Once cured, spray foam insulation stays in place; it won't shift, settle, or fall out of place.


  • Messy; overspray can deposit foam where it must be removed.
  • Respirators and protective clothing must be worn during installation.
  • If the area being insulated cannot be isolated from living space, occupants must vacate premises until foam cures - typically two hours.
  • Temperature-sensitive; cold temperatures can cause problems with foaming action or curing.
  • R-value can degrade slightly over time.

Rigid Foam Insulation


  • Provides both insulation and air sealing, provided that seams between foam panels are sealed with tape.
  • Less messy than spray foam.
  • Different thicknesses are available to suit different applications & R-value requirements.
  • Panels are easy to cut and can be installed at any temperature.
  • Safe handling; no harmful emissions during installation.
  • Best installation for insulating crawl space and basement walls.
  • Some rigid foam panels (like SilverGlo™, for example) include a radiant barrier for additional energy savings.


  • R-value varies based on the type of rigid foam. It can be as low as R-3.8 per in. or as high as R-8 per in.
  • More time-consuming installation than spray foam in some (but not all) applications.
  • Sometimes single-component spray foam must be applied around the edges of rigid foam to seal and hold the panel in place.

Be sure to check out our other content to help in choosing the best spray foam insulation and the best spray foam contractor in Kentucky, West Virginia, and Ohio, Tennessee.

Start Saving Energy & Money With An Insulation Upgrade!

Call 844-723-9296 or contact us online to schedule a Free Estimate for spray foam insulation in GeorgetownLexingtonCharleston, Ashland, Richmond, Barboursville, Frankfort, Paintsville, Mt. Sterling, Huntington, and nearby.

We can also identify the other major areas in your home that are depleting your home's energy. Reed's Sprayfoam Insulation is dedicated to helping you prioritize your home's energy upgrades and repairs.

Reed's Sprayfoam Insulation
15 Coleman road
Belfry, KY 41514