We are WestPro Colorado’s choice for roofing, siding & windows

for roofing, siding,
windows or gutters

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Longmont’s roofing,
siding & window

Our products are Built for Colorado™, and uniquely designed for our Colorado climate.

Want to improve your home?
Need solutions for your building?

WestPro is ready to help.

We service Residential, Commercial, and Multi-Family Buildings across Colorado’s Northern Front Range.

Our Founders

We’ve been in construction since we were teenagers.


We loved the construction industry, but we didn’t necessarily love the companies. We saw an opportunity to build a construction company where we would like to work, a company that puts people first. So, we did.


Turns out, putting people first is good for business. Our staff and company culture are exceptional, customers love our industry-leading products, and our customer service is unrivaled.


“From shingles, to sealants, we only use the products that have a track record of success in the Colorado climate. If it’s not Built for Colorado, then we don’t use it.”

Patrick Knackendoffel

WestPro President

Your local team of home
improvement experts

Products and service
you can count on.

Over 200

5 star Google reviews

Over 200 positive reviews and satisfied customers. We are a team of professionals passionate about our job, and grateful for the fact our clients can recognize and appreciate that.

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for Roofing, Siding, Windows or Gutters

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    (303) 834 - 9236

    Monday – Friday
    8:30 am – 5 pm

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