Customer Testimonials

Spencer and Mainstream do really good work!
Jamie C.

Mainstream replaced 7 failing windows and a sliding glass door in my 2005 house.
Emily M.

We have been with Mainstream for about 15 years.
George S.

Very happy with the outstanding job done by Mainstream Home Improvement.
James T.

Very pleased with my new windows!
Vicki P.

We are very happy with the job of our new windows installation from start to finish.
Diane A.

Needed new windows on my front porch and new gutters on the whole house.
Noah H.

Ryan was the first rep who came to give an estimate.
Lillian B.

Mainstream Home Improvement did an excellent job replacing and installing my new windows.
Cynthia I.

We absolutely love our new look/siding.
Michael H.

Excellent service from bid to installation.
Barbara A.

Mainstream has been excellent to work with; they installed new windows in my home.
Mike G.

We are very happy with our new windows!
Sue G.

My husband and I cannot say enough good things about Mainstream!
Melanie J.

Great people to work with!
Susan S.

Service always great.
Sky L.

Window came out of the track. Called Mainstream.
John M.

I used Mainstream 20+ years ago for the 1st time for siding and windows and was thrilled with them!
Linda W.

Where do I start? I give them 5 stars because I can’t give them 6.
Ty T.

Where do I start? I give them 5 stars...
Ty T.