Philadelphia’s Local Insulation Contractor for Over 60 Years

Reilly Insulation is a family-owned business established by Thomas N. Reilly and his partner, Jerry Colvin, in 1957. Reilly and Colvin specialized in insulating new homes and eventually began adding insulation to existing homes. Jim and Tom Reilly Jr. took over the company in the mid 1990s and continued to learn not only about insulation but about the big picture: home performance.

Making homes energy efficient makes for a healthier planet and saves our customers money. Being “green” isn’t a new thing for us; it’s how we have differentiated our business over the last six decades. We are proud of the reputation we’ve established as our region’s premiere insulation installer and energy performance consultant.

See Our Work in Philadelphia Magazine’s Design Home®

We at Reilly Insulation are extremely privileged to have participated in Philadelphia Magazine’s Design Home® showcase for the past seven years. We are proud to be featured among our region’s best contractors and suppliers for custom-built homes.


Reilly Insulation is an A+ rated business with the Better Business Bureau. As an Owens Corning® Certified Energy Expert® professional, we’re trained on ways to help optimize comfort, noise control and energy efficiency. Nationally recognized as an elite insulation contractor and energy performance consultant, Reilly Insulation has been tested to meet the highest standards — delivering advanced solutions based on decades of building science research. Because we are part of this exclusive group certified by Owens Corning, we’re backed by a limited lifetime warranty on the #1 most trusted brand of insulation* and a lifetime workmanship warranty on installation.

We’re also BPI certified — meaning we’ve spent classroom time becoming rigorously trained and certified in home performance. We have the knowledge, skills and experience to evaluate a home and recommend the right, cost-effective solution to make it more comfortable, energy efficient and healthier. You’ll save on heating and cooling costs and do your part in reducing the carbon footprint.

*Source: Home Innovation Research Labs Builder Panel, April 2019
See actual warranty for complete details, limitations and requirements. For the lifetime of the Home beginning from date of installation by an Owens Corning® Certified Energy Expert®


We are a local contractor that installs insulation in Philadelphia County and beyond—including Bucks, Chester and Montgomery counties.


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