"In this day and age it is very hard to find honesty and integrity in the siding and window industry. Their wealth of knowledge and experiences surpasses all others in their field. I would recomm... » more
- David and Dorothy Brasmer of Rock Island, Illinois


» More Testimonials

Substrate

The base or core material in an assembly of parts. In sills, the full length wood or composite part of the sill, visible only from the bottom side, or ends.

Not quite sure what the proper home improvement terms are? Let us help. We have put together a glossory for you to learn a little bit more about Home Improvement Glossary and Terms

For furthur reading please see our Learn the Basics Homepage.