Customer Testimonials

I am, as usual, totally impressed by mainstream.
David D.

Thanks for another fantastic project!
Andrea B.

Daniel did a great job repairing the downspout gutters.
Bryan C.

Great experience. Will use them again.
Jessica H.

5 Stars!!
Linda H.

They were very easy to work with. I definitely recommend this company.
Meri T.

Very pleased.
James C.

Very happy with the new siding on our home!
Theresa M.

Just a wonderful company to do business with.
Mary H.

Excellent work. Cleaned up afterwards. Great job.
Julie D.

Thank you for the great service!
Valerie A.

Nice guys, and the windows look nice.
Elijah L.

We are very pleased and would certainly recommend to others without hesitation.
Jim and Connie C.

Great friendly folks to work with. Replaced gutters and added covers.
Phil R.

We are still amazed by the patio doors quality and looks!
Douglas B.

Second window project and will continue to use this company.
Beth F.

Great service from the initial phone call of inquiry all the way through installation.
Neal W.

Had a small repair. As always they do a great job.
Elaine F.

Was able to get on the schedule fast and Steve was able to get them repaired in no time.
Samuel S.

Professional, Honest, Trustworthy, Reputable, Reliable, Experienced, Skillful, Efficient, Thorough, Accommodating!
Max D.