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Best siding pros near Longmont, CO

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  • Average homeowner rating star icon3.9
    Average homeowner rating
  • Verified reviews icon238
    Verified siding services reviews

Top-Rated Siding pros in Longmont - Updated Nov 2026

Avatar for Martin and Sons
Martin and Sons
4.8(
176
)
Wood or Fiber-Cement Siding - Repair or Partially Replace

Serving Longmont, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Credit card accepted

"They did repair and replacement of several areas of siding on our 25 year old house. Very high quality of workmanship and did a great job blending the new siding with the old to make it look great."
Response time2 days
86 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Bellwether Homes
Bellwether Homes
4.7(
27
)
Wood or Fiber-Cement Siding - Install or Completely Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Colorado siding repair was so wonderful to work with. They came quickly to give us an estimate. The workers came and were SO EFFICIENT. In addition there was no mess left. We could not be happier that they were able to repair the sections without needing to replace all our siding. Thank you Colorado Siding Repair!"
Additional Photos
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+95

Response time1 day
Response rate100%
18 neighbors recently requested a quote
Avatar for GS Exterior Experts Corp.
GS Exterior Experts Corp.
5.0(
26
)
Vinyl Siding - Install or Completely ReplaceWood or Fiber-Cement Siding - Install or Completely Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"We loved working with Ernest. He answered every question I had in a very timely manner (within minutes of my text). We have 100% exterior siding (no rock or brick. Our house was a big job and Ernestâ s crew had our James Hardy siding completely finished within 2 weeks and they were able to start immediately. The crew worked non-stop except to break for lunch. I have referred a friend to GS exteriors and I will continue to refer people. I am 100% satisfied."
woodtone board and batten
James Hardie siding
fiber cement
hardie board
rustic

+7

Response time2 days
Response rate85%
Recommended by94%of homeowners
Avatar for Bellwether Windows, Siding, & Doors
Bellwether Windows, Siding, & Doors
4.8(
26
)
Wood or Fiber-Cement Siding - Install or Completely Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"I was very pleased with Colorado Siding Repair. They were very professional. The teams were always here on time, cleaned up every day, kept me informed of the status of the project, and friendly. The work was excellent- attention to detail, made sure everything was done right, and the house looks beautiful! I would definitely recommend them."
Response time1 day
Response rate100%
47 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
251
)
Vinyl Siding - Install or Completely ReplaceWood or Fiber-Cement Siding - Install or Completely ReplaceMetal Siding: Install or Completely Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Very professional from start to finish. My Hardi plank siding had cracks and broken pieces missing. I had to replace that side of my house. Home Genuis did an excellent job replacing my siding. They started on time and finished on time and effectively communicated each step. The Project manager AJ was superb."
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+37

152 neighbors recently requested a quote
Recommended by57%of homeowners
Avatar for BK Contractors
BK Contractors
4.6(
87
)
Metal Siding: Install or Completely ReplaceWood or Fiber-Cement Siding - Install or Completely Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Paolo and his crew were a true treat to work with. We have been doing a full house addition and remodel, and after having several setbacks, paolo and his team came in and were able to totally redo siding, trim out a covered patio, replace gutters and paint the house. They bent over backwards to make sure 1) things were done in the right order (even coming out for 1 random day to do facia before my roofers came out and put a roof on the house) and 2) Make sure that I was happy with the end product: consistently telling me "We want you to be happy- you have to live here, so lets make sure we get this right." The two man team was here long hours over a couple of weeks, always was sure to clean up well in the evening and left the house very clean at the end of the project, and were courteous to anyone else here, collaborated well with other trades, and were kind to my kids (super important in my book!). After dealing with a lot of trades during this project that were mediocre, un-responsive, and some down right rude, it was a breath of fresh air to work with someone who did excellent work, had good follow up, and listened to my ideas and made them come to life. I would highly recommend."
Victor Street Interior/Exterior Home Remodel
Arvada/Garland Street
Golden Siding Replacement and Concrete Patio Pour
Knox Court
Westminster Irving Renovation

+116

Response time2 days
Response rate100%
23 neighbors recently requested a quote
Avatar for Ideal Siding Boulder
Ideal Siding Boulder
4.7(
12
)
Vinyl Siding - Repair or Partially ReplaceWood or Fiber-Cement Siding - Repair or Partially ReplaceVinyl Siding - Install or Completely Replace+3 more

Serving Longmont, CO and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Hired Ideal Siding to replace the siding on our home, and we were extremely pleased with the efficiency of their service. The project was completed on time, and the crew worked diligently to ensure everything was done to perfection. Our home's exterior now looks stunning, and we couldn't be happier."
James Hardie Installation
James Hardie Installation
James Hardie Installation
James Hardie Installation
James Hardie Installation

+31

Response time10 mins
10 neighbors recently requested a quote
Recommended by90%of homeowners
Adams Siding & Construction
4.6(
9
)
Vinyl Siding - Install or Completely ReplaceMetal Siding: Install or Completely Replace

Serving Longmont, CO and surrounding areas

Approved

In business since 1989

Free estimates

Credit card accepted

"Adams Siding and Construction did a wonderful job replacing the siding on two sides of my house that were damaged in the hail storm June 18th. Ron Adams was a pleasure to work with . I highly recommend them."
Response time1 day
Response rate95%
2 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
254
)
Wood or Fiber-Cement Siding - Repair or Partially ReplaceVinyl Siding - Repair or Partially ReplaceVinyl Siding - Install or Completely Replace+3 more

Serving Longmont, CO and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Very professional from start to finish. My Hardi plank siding had cracks and broken pieces missing. I had to replace that side of my house. Home Genuis did an excellent job replacing my siding. They started on time and finished on time and effectively communicated each step. The Project manager AJ was superb."
Asphalt Roofing
1304 neighbors recently requested a quote
Recommended by56%of homeowners
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Showing 1-10 of 282
Siding FAQs, answered by experts

You can put new siding over clapboards, but it’s not recommended. Some sidings, like vinyl siding, can go over clapboards with sheathing like a foam layer in between. However, it’s best to remove clapboard siding if you plan on replacing it with new siding. Burying wood clapboards underneath new siding can create risks of rot and mold, or hidden insect damage. It can also create warping issues over time. Removing clapboards allows you to properly install a new sheathing, as well as clean up the exterior wall and look for any signs of damage.

Vinyl is the most common shingle siding due to its rigid PVC design, longevity, affordability, and ease of installation. The next most popular types of shingle siding are fiber cement, which is in the mid-range for prices, and cedar shake, which is the most expensive. Consider the upfront cost, ongoing maintenance costs, and durability in your specific climate before deciding.

Vinyl, brick veneer, stucco, steel, stone veneer, and composite siding are popular alternatives to wood siding. Which siding material is best for your home boils down to your budget, aesthetics, lifestyle, and climate. For example, stone veneer offers a timeless charm and is low maintenance but may have too high of a price tag. Meanwhile, some homeowners love vinyl siding for its low cost, while others dislike it for its appearance and shorter life span.

If you have stucco on the outside of your home, it’s technically considered cladding and not siding, but beyond that, it’s impossible to tell without a little digging. Without damaging the siding material, expose part of it to see if there’s an air gap between the siding and your exterior wall. If there is, you have cladding. If the siding is affixed directly to the exterior wall, you have a simple siding system.

Yes, it is common for mold to grow on the underside of the siding due to the moist atmosphere. When there is an abundance of moisture, mold has the ideal environment to spread and thrive. This fungus can be found on virtually any surface, both indoors and outdoors. Generally, it is most active when the environment is warm, damp, and humid.

The Longmont, CO homeowners’ guide to siding services

From average costs to expert advice, get all the answers you need to get your job done.