Licensed & Insured throughout the Colorado Front Range

Window Replacement

G2 Construction is a full service general contractor, which means our team can make the structural and custom changes needed to complete the window replacement your home needs. Most window companies in Northern Colorado are limited to only helping with the structure of windows in your home.  Our expert team can accomplish anything needed to achieve the look and function you want for your home.

Custom Window Replacement Services

G2 Construction is a certified contractor through Andersen Windows and Pella Windows.  Because we work with high end window brands that offer specialized windows, we can customize windows to meet your home’s specific needs. We can make the windows in your home as minimal or as extravagant as you would like.

You will not feel pressure from our team.  We understand that making decisions regarding your home can be difficult. Our team will give you all the information you need to  make the best decision on a timeline that you are comfortable with.

Window Services That Fit Your Specific Needs

Services and solutions you can count on

At G2 Construction, we strive to be an all-in-one service solution for your home.  If you are in need of new windows, we are the team of contractors to trust. We will work with you to provide a quote in a manner you are comfortable with. Whether it’s in-person or via a Zoom meeting, we can complete the measurements and quote in a convenient manner.

We take care of you and your home throughout the window replacement process.  We make sure your windows:

  • Pass your city inspection
  • Are updated to your county’s specific code requirements 
  • Work with any custom structural changes around your windows
  • Are effective for the environment and climate your home is in 

Quality Workmanship

We hold our work to the highest standard. We bring our A-game on every project.

Honest Communication

We strive to make your window replacement as stress-free as possible; We're fully licensed & insured for your protection.

Working for You

Your satisfaction is our first priority. We won't stop until you home is how you want it to be.

Trusted & Certified Window Installers

G2 is Proud to Be an Andersen Certified Contractor

Dependable Expertise

The G2 Difference

G2 Construction stops at nothing to provide the highest quality of windows and service. We’re proud to partner with Andersen Windows and Pella Windows to offer exceptional windows to our clients. When you trust our team for your window replacement, you can be confident that you’ll receive the custom windows you want!

Window Replacement Completed by:

Jeff Carlson

Want to learn more about Window Replacement?

Talk To Jeff & See how he can help

What Our Customers Are Saying

We’re incredibly fortunate to serve our customers through word of mouth recommendations.

We used G2 for a major home renovation. Everything from demo to adding extra living space to completely rebuilding the entire main floor-kitchen, bath, flooring, electrical, plumbing, painting, etc. They are honest, hard-working and easy to work with. No home renovation project is without complications, unexpected obstacles and setbacks. G2 stuck with the project until every last detail was handled. Their integrity is beyond question. If something was not right, they made it right. A rarity in this industry to find a company that stands by their work, their word and their workers. Derrick, Nick, Jose, Jeff…and the whole team…great to work with! We will continue to use their services for our home and business properties.
Stephen Seefeld
Stephen Seefeld
G2 Construction built a new 18' x 18' deck and awning for us to replace an old damaged structure. The awning is open beam, heave timber construction and the deck flooring is solid premium Trex. The finished product is beautiful and we couldn't be happier. I'm a retired construction manager of 40 years, and you can take it from me that even though this was some what of a specialty project, it was a no-hassle dream working with this contractor. All their employees and subs we're great to be around; knowledgeable, polite and accommodating. The business owner, Derek, managed the project well, and the field superintendent, Jose, is a near construction perfectionist. My wife and I are proud to recommend G2 for any residential/light commercial construction work. Sincerely, Steve & Jennie
Vanessa McCracken
Vanessa McCracken
We hired G2 to complete a commercial remodel project in a 40 year old building in Longmont. G2 was excellent in every way. From beginning to end, they were punctual, professional, thorough, responsive and completed quality work. G2 gave us a fair bid on a optimistic timeline. Due to their fantastic coordination with their subcontractors they stayed on schedule for everything that was in their control. We had some delays due to unexpected findings above the drop ceiling and additional specifications we had to add at the last minute. G2 was always a part of the solution to unexpected situations and worked very diligently to get the project completed to our satisfaction. Special thanks to Aaron and Dennis who were great to work with at every step. I highly recommend G2 to anyone looking for a quality contractor. I would definitely hire them again.
Jennifer Peers
Jennifer Peers
G2 did two separate remodels for us during the Covid pandemic. The first remodel was our kitchen and main level trim and paint, as well as new railings on our stairwell. They did a fantastic job with it. Lots of attention to the small details that make it look so professional. They also had to add a beam to replace a post and took care to wrap it in wood that matched our cabinets. Despite all of the challenges with getting inspections at that time, they managed to stay pretty close to our original schedule. We brought them in again to do our master bath, and upstairs trim, paint, and carpets. They did an amazing job with the tile details, cabinetry, and fixtures. They took a lot of time getting the barn door lined up and working right. They came back to touch up the details at the end so it was perfect. Communication was good throughout the projects, they asked questions when necessary, and they shared photos of progress. I would recommend them highly.
Carol Scholfield
Carol Scholfield
G2 Construction is a highly reputable company. G2 replaced our roof this week and did a fantastic job! They were fast, efficient and professional. We had some issues with our insurance company not wanting to cover the cost and Jeff Carlson from G2 went to bat for us and contacted our insurance company. Jeff's extremely honest, hard-working and professional! He stayed in constant contact with us and when the insurance company approved our claim, he had a team out in a short period of time and we received a high quality roof that will last for years to come. No matter your need, G2 is the company to call. With owner, Derek Griess and every employee you can expect great quality work at fair prices. They are dependable, trustworthy and reliable!
Troy Moyer
Troy Moyer
G2 was prompt and professional. Their service was great and there were no hidden or unreasonable costs. We will definitely use them again.
marilyn korasidas
marilyn korasidas
We hired G2 to coordinate and complete multiple projects on our new “1965” home. We could not be happier! Front and backyard custom fences, exterior walls cut and windows installed, an upgraded electrical panel and other needed upgrades too numerous to lust. Nick, Jose, Ari and the crew are outstanding! Creative, kind, problem solving wizards chock full of integrity and responsibility. We will be working them for years to come! Marilyn and Bob
Justin Pipe
Justin Pipe
G2 replaced the roof and gutters on our private, Christian school. Around the same time, they also did the roof, siding, trim, gutters, and exterior paint on our house. For both projects, the crews did great work and were so fast! Our house was done in one day and our 50,000 square foot building was done in just under 2 weeks even with bad weather. Jeff kept us up to date with every little schedule adjustment (it’s been a rainy spring!) and was honest and straightforward with everything. Jeff was so knowledgeable about working with our insurance company and knew where typical oversights could happen and worked to prevent them. I’ve heard roofing horror stories from other people, but both our projects could not have gone smoother. I highly recommend Jeff and G2 Construction for residential & commercial projects!
Tonya Bettridge
Tonya Bettridge
We started working with G2 on a roof replacement. They worked closely with our insurance company to maximize the claim coverage. Jeff oversaw every step of a complicated process (solar panels had to be removed and replaced and we replaced a swamp cooler). We were so impressed with their work, we then hired them to completely re-do our backyard, with a deck removal, brand new gorgeous concrete patio, new drive way, new sod in the yard and yard edging with gravel. They exceeded our expectations with professionalism and attention to detail. We will definitely call for any future project needs!
Myra Escue
Myra Escue
Jeff was a real pleasure to work with on our roofing project...from his first visit until the completion, he was friendly, patient, professional, and thorough. The roofers were very professional, fast workers (less than 7 hours from beginning to completion), and friendly. Our yard area was completely clear of any trash when they finished. We are beyond pleased with the entire project and would definitely recommend G2 Construction LLC for your next home project.

Get In Touch With Our Team

Window Specialist Waiting To Connect With You

When you need new windows, you want a team that puts you first.