Can Spray Foam Insulation Be Painted?

Spray foam insulation is a highly functional product which can offer a wide range of benefits for homeowners. While it is an excellent insulator, can reduce noise pollution, and increase the structural integrity of your home, it might not be the prettiest thing ever.

Spray foam is typically a beige color and a bumpy texture that some homeowners may want to cover up. If your spray foam isn’t covered by drywall, you can increase its aesthetic appeal by giving it a paint job. If you are attempting to paint your spray foam insulation there are a few things you should know.

Check Local Building Codes

Before deciding to paint over your spray foam insulation, you will want to be aware of any local building codes or requirements that may require you to include a fire barrier. Some local building requirements necessitate the use of drywall in order to protect adjoining living areas against the spread of fire in an emergency. While there are some coatings and paints that are designed specifically for use on spray foam insulation, you may want to consult with a professional about the laws in your local area before you begin.

Wait For It To Set

If you decide to paint your spray foam, you will want to make sure that your insulation has fully dried and set before making any modifications. You want to wait at least 24 hours after the initial installation before attempting any modifications, but if you can wait a little longer, that’s even better.

If you fail to wait for your foam to properly set, you could damage the insulation and decrease its overall effectiveness as an insulation material.

Sand it Down

After the spray foam dries, it may have a slightly bumpy and uneven surface, which might not make painting it very easy. You can ensure a quality paint job by sanding down the top layer of the foam to smooth out any of these bumps. It’s best to use a power sander for larger areas. Be sure to wear a respirator and eye protection for this part of the process.

Choose Your Paint

If you have sanded down the surface of your insulation to be perfectly smooth, you might be able to get away with using a paint roller. However, more than likely even if you have sanded down the top layer, there may still be some bumps and imperfections on the surface. 

For this reason, spray paint is the best possible option. Using spray paint will make it easy to get a nice even coat,  allowing the paint to get into any of those dips and bumps that may be left over after the sanding process.

Using spray paint will also take a lot less time than using a traditional paint roller brush. You can do any necessary touch-ups using a brush.

Hire a Professional

If you want to get the absolute best results possible, you should consider hiring a professional painter. A good paint contractor will know which types of paint are best for use on spray foam insulation and will know the proper techniques necessary in order to achieve the best aesthetic.