D&N Siding and Windows llc.

We Make the difference.

Company Profile

Siding, Windows, Decks, & Doors – details like these can transform your home, making you feel like you just purchased a new home and it's the best looking one of the block!


At D&N Siding and Windows, our goal is to help your house become the home you've always wanted. Seamless Steel, Vinyl or Hardy, we’ll guide you through the decisions, providing fresh options and then stand back while you choose your favorites. We pull it all together and leave you with a home that is beautiful, functional and uniquely yours. Dennis supervises the entire project from the beginning.

D&N Siding and Windows


Founded: 1998 in the Bitterroot Valley

Owner: Dennis Borkholder

Certifications: EPA lead certified, licensed general contractor


Areas of expertise:  Siding, windows, decks and doors

Awards & Recognition

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Ever so often we find ourselves bursting with news

that we just have to share to the world! 

Our next public appearance!


Coming soon to a neighborhood near you!  Look for us in Polson, Helmville, Missoula and beyond this year!

10 yr membership to BBIA & MBIA            BBB member 10 yrs              

EPA Certified Lead Renovator              

Premium Simonton window installer