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Products & Services

Roofing Services
Roof Replacement
Skylights & Sun Tunnels
Roof Repair
Roof Inspections

Commercial Roofing

Types of Roofing
Asphalt Shingles
Asphalt & Fiberglass Shingles
Wood Shingles & Shakes
Metal Roofing
Energy-Efficient Shingles

Siding Services
Siding Installation
Siding Replacement
Vinyl Siding Installation
Vinyl Siding Replacement

Covered Gutters & Downspouts
Gutter Leaf Protection
Seamless Gutters
Gutter Installations
Gutter Replacements
Gutter Guards & Leaf Covers
Aluminum Gutters

Replacement Windows & Doors
Vinyl Doors
Aluminum Doors
Steel Doors
Fiberglass Doors
Bay & Bow Windows
Vinyl Windows
Double-Hung Windows
Casement Windows
Entry Doors

Before and After Pictures from Groton
New Roof Put On In Groton, CT

New Roof Put On In Groton, CT

Before After
New Roof Put On In Groton, CT New Roof Put On In Groton, CT

A couple in Groton, CT was thrilled to receive a new roof done by our Klaus Larsen Roofing team. They were blown away by the results and wrote a 5 star review on our Google Review page.

Multi-family Roof Replacement Groton, CT

Multi-family Roof Replacement Groton, CT

Before After
Multi-family Roof Replacement Groton, CT Multi-family Roof Replacement Groton, CT

Shoreline homes, like this project in Groton, are often subjected to high coastal winds. IKO shingles deliver 130-mph wind resistance. If we install your roof, you can rest easy knowing that you are well protected. 

Groton, CT Roof Replacement

Groton, CT Roof Replacement

Before After
Groton, CT Roof Replacement Groton, CT Roof Replacement

Shingle-style homes are iconic in how they portray New England summers, and it was a pleasure working on one. This Groton home was in need of a complete roofing overhaul. We used ice and water shield to protect it from coastal storms. Call us today and we can cater our expertise to your home's needs. 

Company Awards
$2,900 Klingberg Family Centers Donation
For every roof installed during this initiative, we have made a donation to support programs for children affected by trauma.... [Read more]
Voted #1 Contractor in Connecticut
Klaus Larsen was voted 1st in Best of Hartford Magazine in the Home Repair and Remodeling category. Over 20,000 people... [Read more]
VFW Appreciation for Veterans Outreach
The Veterans of Foreign Wars Organization recognized Klaus Larsen Roofing for their continuous veterans outreach and dedication in honoring those... [Read more]
More Awards

Groton's Experienced Roof Repair & Replacement Contractor

I would highly recommend your Company to anyone who is in need of a new roof. Thank you for providing...
Happy Customers Surrounding Groton, CT
Work Requests

Click the icons to see what our customers had to say.

Reviews From Groton
Testimonials From Groton
They earned my Five Star rating.
Testimonial by Bill B. from Groton, CT
We survived the winter with our new roof.
Testimonial by Peggy A. from Groton, CT

Experienced roofing contractor & gutter company in Groton, CT

We have been serving Connecticut residents since 1998 and are committed to bringing you peace of mind. We are New London County's trusted roofer and gutter installation professionals. We always provide the best quality materials and service. For our gutter and roofing contractors, no project is too big or too small. We take great pride in our work, and will always treat you and your home with respect. Our experts have the tools and experience to give your home the roof, covered gutters, gutter leaf protection, and siding it deserves. We offer roof repairs, roof replacements, seamless gutters, leaf covers, replacement windows, new entry doors, and siding services and will work hard to ensure that we exceed your expectations.

Whether repairing missing shingles on the roof, fixing roof wood rot, replacing clogged gutters, adding clog-proof gutter guards, updating outdated siding, or doing a roof replacement, we guarantee that your home will be safer and more beautiful than ever before. With over 20 years of experience, we are fully qualified to deal with any of your roofing, siding, gutter installation, or gutter leaf guard needs.

Here at Klaus Larsen LLC, your satisfaction is our priority, and we want to make the roof repair, roof replacement, new window installation, entry door replacement, siding, and gutter installation process as simple and pleasant as possible for you. To meet this goal, we offer free, no-obligation estimates for any of our services. Contact us today to find out how we can serve you!

Our roofing & gutter installation services in Groton, CT

Whether you need a complete roof replacement, roof leak repairs, new seamless gutters, clog-proof gutter leaf guards, or updated siding, we offer these solutions and more!

  • Roof Replacement
  • New Roof Installation
  • Roof Repair
  • Snow Removal
  • Roof Inspection
  • Asphalt Shingles
  • Vinyl siding
  • Siding Replacement
  • Commercial Roofing
  • Siding Installation
  • Metal Roofing
  • Skylight Installation
  • Covered Gutter Installation
  • Gutter Protection System
  • Gutter Guards & Gutter Leaf Protection
  • Downspout & Downspout Extensions
  • And More!

Expert roof repairs & roof replacement in Groton, CT

Does your home have roof leaks, wood rot, missing shingles, or storm damage? Or maybe it is time for you to get a new roof altogether. Roofing problems can become more severe and call for costlier, more complicated repairs the longer you wait to resolve them. These issues can also spread to other areas of the home, causing water intrusion, pest infestations, poor energy efficiency, interior leaks, and more. Whatever the case may be, our expert roofing contractors are the best in the business and will make sure that you get roof repairs or a roof replacement that you can be proud of.

So whether your home has roof storm damage, roof leaks, broken shingles, or has a roof that has reached the end of its lifespan, have one of our experts perform an on-site roof inspection! We can examine the system at every level and recommend solutions based on your home's unique needs. We also offer several different roofing materials:

  • Asphalt shingles
  • Wood shingles
  • Energy-efficient shingles
  • Metal roofing

Our roof repairs and roof replacements are engineered to last. And our lifetime roof replacement warranty gives you even more peace of mind!  We also work with insurance adjusters to ensure that you get the highest quality work for the lowest possible cost when you claim a roof replacement. 

In addition to roof repairs and roof replacements, we also install skylights and sun tunnels to bring even more light to your home and value to your property! Transform your Groton home with any of our roof repair, roof replacement, and roof cleaning services today. Call 1-844-640-9774 or click below to schedule a free estimate!

Protect your home with seamless gutter installation

Does your home have leaky, clogged gutters? While a water management system is necessary to protect your property from structural damage, basement flooding and leaking, water intrusion, siding issues, and more, leaky and clogged gutters can cause more harm than good. That's because runoff becomes obstructed and spills over. But there is no reason to worry. Klaus Larsen LLC is the expert in gutter protection systems by Gutter Shutter, including seamless gutters, gutter guards, downspouts, and downspout extensions.

No matter what gutter problem you may have, including sagging gutters, leaky gutters, or clogged gutters, our trusted professionals have the resources and knowledge to give you the gutter protection system you need. Klaus Larsen LLC provides services like:

  • Gutter Protection System
  • Covered Gutter installation
  • Gutter guards & Gutter Covers
  • Downspouts & Downspout Extensions

If you have overflowing or clogged gutters or gutters that are old and in need of repair or replacement, you've come to the right place! We offer a variety of colors and materials to fit your style and budget and are ready to take on any project. Why wait when your house can be transformed and protected by new gutters today?

Replacement windows & doors

Does your house have uncomfortable drafts, high energy bills, or ugly, worn-looking windows and doors? Let Klaus Larsen LLC help with durable and beautiful replacement windows and doors! New doors and replacement windows improve the home's comfort and energy efficiency. Plus, they also enhance its overall curb appeal and property value.

Replacement windows & doors we offer:

  • Vinyl doors
  • Aluminum doors
  • Steel doors
  • Fiberglass doors
  • Bay & bow windows
  • Vinyl windows
  • Double-hung windows
  • Casement windows
  • Entry doors
  • And more!

Get a free estimate on a replacement doors and windows project today. Klaus Larsen LLC serves Groton, CT and nearby areas.

Get your free roof replacement & roof repair quote today!

Klaus Larsen LLC is the specialist that you can trust with your roof repair, roof replacement, or gutter installation project. Whether you need to fix roof wood rot, update an old roof, replace clogged gutters, or install new vinyl siding, we are ready and able to take on any challenge and we guarantee that we will blow you away! We are proud to serve the Groton area and want to give you a free estimate for any of our services. Call 1-844-640-9774 or click below to get started!

Case Studies From Groton
The owners here in Groton had a very old 3-tab roof that they knew was not going to last much longer. The roof was simple as far as it goes except...
Shingle-style homes commemorate summer in New England with asymmetrical, rustic architecture and colonial motifs. This house, situated right on the...
Job Stories From Groton, CT
Groton Roofers to Resolve Leak in Kitchen

The owners of this ranch in Groton had a major leak that was right above the kitchen cabinets. So every time they had a heavy rain, the dishes would get a surprise washing. When they got a door hanger from us promoting our winter roofing, they immediately got a quote from us and scheduled the work for later that month. Suddenly a major rainstorm was on its way and the owners were worried that if they did not get the roof fixed soon they would have a mess on their hands. So they called and, because it was an emergency job, we were able to move up the work and got it done before the storm came. Our crew came and tore off the old shingles and replaced the rotten sheets of plywood. They then installed nine feet of Ice and Water barrier and installed Synthetic Underlayment. The shingles were Owens Corning Duration Quarry Grey. The entire installation, start to finish, was done in one day and the crew cleaned up the yard thoroughly. When the rainstorm finally came and poured down on their home, the owners opened up their cabinets to check on the leak and it was all dry.

Groton Roofers to Resolve Leak in Kitchen - Photo 1
Replacing and Recycling a Roof in Groton, CT

Here was a Cape in Groton, CT that had reached the absolute maximum lifespan of its roof. Shingles were curling and actually missing in several places. We gave this home a full roofing system, in Onyx Black shingles with a matching Owens Corning VentSure Ridge Vent. This vent comes with a Weather Protector moisture barrier that provides consistent attic ventilation. The old roofing asphalt was recycled, and will be used for CT and MA road paving.  Call or contact us today for a free price estimate on your roof replacement project.

Replacing and Recycling a Roof in Groton, CT - Photo 1Replacing and Recycling a Roof in Groton, CT - Photo 2Replacing and Recycling a Roof in Groton, CT - Photo 3Replacing and Recycling a Roof in Groton, CT - Photo 4Replacing and Recycling a Roof in Groton, CT - Photo 5
Roof Repair & Replacement in Groton, CT

This was a raised ranch with attached garage in Groton, CT. It was completed with two layers of True Def Duration Quarry Gray shingles, with SureNail strip technology. The trademark SureNail strip features “a unique triple layer of reinforcement that occurs when the fabric overlays the common bond of the shingle laminate.” These strips also require less nails, which mean less trauma for your decking. Three rows of 9' Ice & Water shield were installed to all of the eaves in addition. We also removed and reinstalled a lightning rod system.

Roof Repair & Replacement in Groton, CT - Photo 1Roof Repair & Replacement in Groton, CT - Photo 2Roof Repair & Replacement in Groton, CT - Photo 3Roof Repair & Replacement in Groton, CT - Photo 4Roof Repair & Replacement in Groton, CT - Photo 5Roof Repair & Replacement in Groton, CT - Photo 6Roof Repair & Replacement in Groton, CT - Photo 7
Work Requests From Groton, CT
Project Location: Groton, CT
Roof was done 2 different times: back 1/2 is 19 years old and has repairs. Front 1/2 is 14 years old
Project Location: Groton, CT
Need a roof replacement
Project Location: Groton, CT
2 down spouts from gutters, approximately 23 feet and 12 feet.
Project Location: Groton, CT
~2000sq ft of roofing needing replacement
Project Location: Groton, CT
Re- roof my 464 sq ft shed located on the rear of the property with asphalt shingles - high wind resistant grade!
Project Location: Groton, CT
Looking on quote for roof replacement
Project Location: Groton, CT
I need new gutters installed on my house. Approx. 75 linear feet with 3 down spouts and a leaf guard.
Project Location: Groton, CT
Would like an estimate to repair/replace flashing around chimney and select shingles. Also replace skylight.
Project Location: Groton, CT
Is linking water from the roof.
Project Location: Groton, CT
The flashing around the chimney appears to be loose.
Project Location: Groton, CT
Project Location: Groton, CT
This person has filled out the Star Power Pro survey on that you sent them and is interested in another service you provide: siding. Please contact them to schedule a new appointment for this service. This is a no-charge lead.
Project Location: Groton, CT
We have been noticing water stains on our upstairs bathroom ceiling. My husband went into the attic and discovered wet insulation, which we pulled out. It appeared to be coming from the gutters, so they were cleaned out. However, this morning, after last night's rain we are seeing more spots on the ceiling of the bathroom. So, there appears to be something else going on and we need a professional to take a look.
Project Location: Groton, CT
Looking to get estimate for re roofing my house
Project Location: Groton, CT
Shingles peeling up in small area on my roof.
Project Location: Groton, CT
I just wanna ask f you can give free estimate of our roof, the house was own by my mother in law
Project Location: Groton, CT
~100 year old house in need of a roof replacement. Looking for cost effective quotes on roofing materials with the longest life (e.g. architectural shingles or metal) thanks
Project Location: Groton, CT
Looking to do a roof over on a 70 by 16 mobile home. White rubber kit... With added ledge all around for future siding being done later. Need to do roof first. with insulation pad.