Welcome to the home of quality. Rainstream, a family-owned and operated company specializing in sun rooms, eavestroughing, PVC windows and doors by OSTACO, as well as soffit and shutters, has been surpassing the needs of homeowners in Cornwall and area since 1948 – a division of Cornwall Window Inc.

Terry and Valerie Lihou, and Penny Lafave, have created a one-stop shopping experience for all your renovations needs – be it some new windows to brighten your living space, or a sunroom to keep the mosquitoes and spiders a bay while you enjoy the warmth of the spring, summer and fall.

Rainstream’s showroom, located at 313 Balmoral Ave. in Cornwall, includes a variety of window and door options that you can view with no obligation, from Monday to Friday, 9:30 a.m. to 4:30 p.m. And if you need to speak with our team of specialists, we can make special appointments outside of normal business hours to meet your needs. In-home estimates are also completed, with no obligation to you.

Rainstream’s inventory of products is second to none in Cornwall and area, and makes your decisions easier when it comes to home renovations and additions.