Boulder's Highest-Rated Vinyl Siding Pros, by Google
5 vinyl siding installers earned a spot on this Boulder page by Google rating, not by a state file this site doesn't have enough of yet. Wind risk reads Relatively High and hail risk reads Relatively High for the county around Boulder, exactly the two stresses a panel's ASTM rating is supposed to answer.
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34° / 73°Fnormal January and July mean temperatures
What Boulder's climate asks of a vinyl panel
Boulder's July mean of 73°F is well below what a dark vinyl panel can reach in direct sun, which is part of why manufacturers warn about nearby heat sources.
January's 34°F mean, on the other end, is cold enough that a crew has to widen fastening clearances to keep panels from cracking.
Data: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020 (annual/seasonal and monthly, by station) (1991-2020), from the nearest NOAA station 2.4 mi away.
Wind and hail risk near Boulder
Wind risk in Boulder County rates Relatively High and hail rates Relatively High, per FEMA's county-level data.
Neither rating changes what's inside a box of siding sold in Boulder, but both are good reason to ask for a panel's actual wind-load certification rather than trusting the sample board alone.
- Strong wind
- Relatively High
- Hail
- Relatively High
- Wildfire
- Relatively High
Data: FEMA, National Risk Index for Natural Hazards - County-level table, v1.20 (v1.20, December 2025).
5 top-rated vinyl siding installers in and near Boulder
A single five-star review counts for less here than a few hundred reviews averaging 4.8, since the order below blends the star count with how many people left one. Nothing about that order checks a license, so ask to see one yourself before you sign.
Thomsen Roofing
Siding contractor
- Google rating
- Reviews
- 46
- Area
- Boulder 80304
Roof Masters of Colorado
Siding contractor
- Google rating
- Reviews
- 63
- Area
- Boulder 80302
Ideal Siding Boulder
Siding contractor
- Google rating
- Reviews
- 43
- Area
- Boulder 80304
Boulder Roofing Company
Siding contractor
- Google rating
- Reviews
- 24
- Area
- Boulder 80304
Metro Reconstruction Services, Inc.
Siding contractor
- Google rating
- Reviews
- 30
- Area
- Boulder 80303
Before you sign, ask about the panel itself
- What thickness, in mils, is this panel, and does it carry an independent ASTM D3679 certification listing?
- Is this standard vinyl or insulated vinyl, and if insulated, what R-value is certified under ASTM D7793?
- What wind-load rating is the product certified for, in miles per hour, and how does that compare to {county}'s wind risk?
- Will the installer leave the manufacturer's specified expansion gap at trim, corners and openings, or nail tight?
- If the color is a dark shade, is it separately certified for color retention?
- Does any wall face reflected sunlight from a neighboring low-E window, and has that been accounted for in the material choice?