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Introduction: Our service and the quality of our install are what make the difference, we pride ourselves on superior installers, our window installers are finish carpenters by trade and my siding installer is an "artist". We offer everything exterior including windows, siding, roofing, fencing and concrete work. We offer top notch work with details that make the difference! We manage to do this while offering competitive pricing by keeping overhead low.

Hired 40 times

Serves Littleton, CO

Background checked

6 employees

49 years in business

Top pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

Jul - Dec

Jan - Jun

Featured Projects

33 photos

  • Boral Concrete Tile with metal standing seam accent

    Siding Installation

  • Simonton Window replacement

    Siding Installation


Customers rated this pro highly for responsiveness, professionalism, and punctuality.

Excellent 4.9

27 reviews


Read reviews that mention:

Andrew P.

Window Installation

If you are looking for transparency, honesty, fairness, and competitive pricing, check out HRTI. Greg isn't one bit pushy and I love that about their approach.
HRTI's reply
Andrew, thank you for the kind words! I look forward to working with you in the future! Greg
Apr 5, 2021
Garrett M.

We couldn't be happier with HRTI and their work installing new windows in our home. We had multiple bids and HRTI was the best price and best installation time (4-6 weeks as compared to 6-8 weeks for everyone else). It took HRTI 2 days to install our windows and we couldn't have been more impressed with how well they cleaned up around our house after day 1 when they knew they would be back the following day. We've experienced too many contractors who would have left a mess. We also have a fairly old home with original ceramic window sills which we accepted we would lose when installing new windows. The HRTI crew kept the sills in place and worked around them. This was above & beyond! HRTI was incredibly professional as well as quality work and fantastic communication. A big thank you to Greg, Bonnie & Drew (& Drew's crew)
HRTI's reply
Thanks Garret! We appreciate the feedback and the compliments! As a small business we are lucky to have customers like you that take the extra time to share your experience! Greg
Aug 25, 2020
Amanda V.

Siding Installation

Greg was very responsive, professional, and punctual. He was patient and took the time to explore all of my siding options with me.
HRTI's reply
Amanda, Thanks for the positive feedback! I look forward to possibly working with you soon!
Jun 4, 2019
Paula G.

Window Installation

I had all 3 of my windows replaced. I had Greg of HRTI give me an estimate in November and he maintained the same costs in March. That was a great start. An installer was at my house within the week to measure & order the windows. Today the windows were installed by Chad who was very knowledgeably & professional. He did a great job & showed me all the features. I would definitely recommend this company & the quality product they represent. Thank you Paula Garmatz
May 14, 2017
Alexander T.

Window Installation

I spoke with Greg initially and had a good experience talking with him. He was very professional, curious and strait forward. He didn't try to oversell me something that I didn't need and was honest about pricing. Chad installed my windows and security door. He worked very hard and payed attention to detail. He also cleaned up and left the job site looking the way he left it. There was always good communication and good customer service. I highly recommend hiring HRTI.
Feb 4, 2017
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Gregory Cotton


  • What should the customer know about your pricing (e.g., discounts, fees)?

    We give our best price the first time, we don’t play any of the high pressure “buy today” games many competitors play. We believe in a very straight forward, consultative and honest process.

  • What is your typical process for working with a new customer?

    We like to understand the customers needs, we like to meet with you to offer consultation with a few options, once we decide as a team what the best track to take is we will build a plan with a well thought out budget and move forward.

  • What education and/or training do you have that relates to your work?

    I am a general contractor, Lead certified, a Certainteed Master Shingle Applicator, Hardie and LP Preferred Installer, Pella Preferred Installer, Simonton Master Installer, BBB A+ rated for 15 years straight, Houzz Contractor of the Year 2015, 2017, 2019

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