Call us at 781-831-1234 
if you have had a Mass Save 
Home Energy Assessment 
and need a contractor!

McMahon Insulation


About McMahon Insulation

McMahon Insulation is a full service insulation and weatherization company based in Plymouth, MA that specializes in blown-in ​cellulose, fiberglass batt, and spray foam insulation, as well as insulation removal​. We are a participating contractor for the Mass Save program, Cape Light program, and also specialize in residential and commercial insulation across Massachusetts.

As a family business owned and managed​ by a fourth generation carpenter, we look forward to providing you with the highest quality of work possible, as well as the highest level of professionalism and superior customer service. With over ten years of professional insulation experience, we can guide you through the process from the first phone call to the final hand shake. You can feel good about having your home insulated with us because we use the newest technologies and techniques​ to insulate your home and protect​ the environment! 

We pride ourselves on providing a wide range of insulation options, including green and eco-friendly cellulose and spray foam insulation! We come fully licensed, bonded and insured, and we have the knowledge and certifications to do the best job possible. ​

Call or email us today and ask how we can help insulate your home and reduce your utility bills!