Lancaster County, PA’s Top Rated Roofing Company

When you need expert exterior roofing services, KSW is the go-to partner for Lancaster County property owners.

Our technicians will provide you with a rock-solid roof that’s built to last. Because our core values of knowledge, stability, and workmanship aren’t for show — they’re what we live by in every project we complete. (Our referrals and reviews can speak to that!)

Lancaster's best roofing company stands in front of their work vehicle.

See What Others Are Saying About Our Expert Roofing Services

5 star rating

Roof Repair, Gutter Installation, Storm Damage

Great work, responsive team, patient. Worked with me and my insurance claim while also doing some retail work within it. 100% would recommend.

I’ll be giving them the opportunity to bid on some upcoming projects I have as well! Feel confident with them!

Doug Taylor / Review from Google
5 star rating

Asphalt Shingle Roof Replacement

“Absolutely amazing company. We’ve had a few projects they did for us and I couldn’t imagine going anywhere else. They are professional, reasonable prices, the crews are respectful. Wilmer and Randy are so patient and easy to work with. I would give them more then 5 stars if possible. Can’t wait for our next project in a few weeks”

Rhonda R. / Review from Home Advisor
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Roofing Repair & Replacement

Our technicians are experts in both commercial and residential roof repair and replacement. Plus, we have extensive experience doing storm repair work too, and can support you through the restoration process.

Our roofing company provides: asphalt, cedar, slate, metal, EPDM rubber, standing seam metal, and corrugated metal roofs.

Why Choose Us?

  • 40-year roof warranty
  • SELECT ShingleMaster™ certified (as a part of 1% of roofers in the US with this prestigious accreditation
  • A national leader in CertainTeed Roofing installation
  • One of North America’s top SureStart PLUS® warranty providers
Shingle Master Badge

See Some Of Our Latest Work In Lancaster County

A homeowner gets a roofing quote from KSW.

Get your free quote today!

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Window Replacement


You'll receive expert guidance on a range of product options to fit your needs and budget.


You'll experience a job well done in a timely manner, building a strong foundation of trust.


All details matter, from start to finish. Our team’s professional touch shows our commitment to you.