BEST Harwich Window & Door Replacement | High-Performance Coastal Glazing

DENNIS WINDOW REPLACEMENT: ENGINEERED FOR SHORELINE DURABILITY & ARCHITECTURAL CLARITY

From the salt-scrubbed cottages of Dennis Port to the stately properties overlooking Chapin Beach, we provide a structured installation process that seals your home’s thermal envelope against the Cape’s harshest elements.

Coastal-Grade Specs: Impact-rated glass and corrosion-resistant hardware designed for the Dennis coastline.
Thermal Integrity: High-efficiency frames that eliminate Northside drafts and Southside heat gain.
In-House Execution: No random crews. Our uniformed, disciplined teams manage your project from the first measurement to the final seal.
Certified Protection: Fully Licensed and Insured | CSL 120645 | HIC 198901.

THE ENVIRONMENTAL REALITY: SALT AIR & STRUCTURAL EROSION

Why “Off-the-Shelf” Solutions Fail in Dennis: Living between Cape Cod Bay and the Nantucket Sound creates a unique set of challenges for your home’s openings. In Dennis, a window is not just a piece of glass; it is a critical barrier against a high-moisture, high-salt environment.

In the North (Dennis Village & East Dennis): Historic architecture is often plagued by "invisible rot." Moisture trapped behind old casings eats away at the structural studs, leading to drafts that no amount of caulking can fix.
In the South (West Dennis & Dennis Port): Constant salt spray acts like sandpaper, etching cheap glass and seizing up standard hardware. Wind-driven rain often bypasses "pocket-style" inserts, leading to mold growth inside your wall cavities.
Many contractors offer a "quick fix" by sliding a new unit into a failing old frame. At Lions Siding & Roofing, we know that hiding rot doesn't stop it. We focus on the health of the entire opening.

A DISCIPLINED APPROACH TO INSTALLATION

How we customize our process for the Dennis micro-climate:

The Rough Opening Audit

We don't do "inserts." We perform full-frame removals, stripping the opening down to the original studs. This allows us to inspect for structural decay or insect damage, issues frequently found in Dennis’s older housing stock.

Coastal Vapor Integration

We utilize a multi-point flashing system. By integrating high-performance sill pans and head flashing with your home's existing weather barrier, we ensure that even the heaviest gale-force rain is directed away from your interior.

High-Density Thermal Sealing

Rather than using outdated fiberglass stuffing which actually holds moisture we apply low-expansion foam around the perimeter. This creates a permanent, airtight seal that stabilizes internal temperatures and significantly reduces noise from summer traffic.

Aesthetic Continuity

Whether you are maintaining the classic look of a sea-captain's home or updating a modern waterfront estate, we ensure the trim profiles and grid patterns honor the local Dennis aesthetic while providing 21st-century performance.

Rot-Proof Finishing

We complete our installations with advanced composite trim packages (Azek). These materials are impervious to salt and moisture, meaning your window sills will never rot, peel, or require painting.

THE CRITICAL DIFFERENCE: FULL-FRAME VS. POCKET INSTALLS

In Dennis, the “Pocket Replacement” (sliding a new window into an old frame) is a common shortcut that leads to long-term failure. It reduces your view, provides less light, and leaves the most vulnerable part of your home, the old, weathered frame, untreated. Lions Siding & Roofing prioritizes the long-term value of your asset. We clean the structural opening, flash it with precision, and install a complete system. It is the disciplined way to ensure your investment lasts for decades.

REAL RESULTS: PRESERVING VIEWS ACROSS THE MID-CAPE

Clarity Restored from Scargo Hill to the Sound.

WHAT YOUR NEIGHBORS SAY

Accountability in Every Village.

      EXCELLENT  
   Based on 151 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Mary Ellen Moshier 
 
 
 
 Trustindex verifies that the original source of the review is Google. Yuri, my whole career has been spent in the construction business. I am particularly impressed by your company. From sales and estimating through scheduling and field coordinating all of your assets have been far above average. Ty made a great presentation as a sales representative of your company and Iago supervised a very competent crew, responded to my concerns about schedule and finished this job early with little interruption in our lives. Thank you again for your excellent service.
  
 
      Posted on Google  
   
   lisa medeiros 
 
 
 
 Trustindex verifies that the original source of the review is Google. Ty Soares, who works for this company, is a kind individual, a man who can be relied on and trusted. He found me stranded and lost with my two dogs in a conservation area parking lot and took time out of his busy day to give my dogs water and he drove me and my dogs to my car which was a few miles away. I am getting an estimate for new windows from this company because if their employees are like Ty, that is who I want to do business with.
  
 
      Posted on Google  
   
   Mark Sabina 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thanks to Yuri, Ty, Gabriel and the entire Lions Roofing Team for an amazing job installing our new roof. From start to finish, this is a first class company that makes sure they deliver what they promise and that the customer is satisfied when the job is complete. Ty did a thorough pre-inspection of both the inside and outside of the roof area, eaves ridge and gutters. The written quote was one of the best I've ever received and they provided copies of their insurance and license for piece of mind. Project Manager Gabriel was on site before, during and after completion, and always available to answer any questions. The overall job was completed in one day, with a follow-up day for a couple of hours to finish a couple of additional requests I had. One point I must bring up was how clean the job site was after they were done. If you have any roofing or siding projects coming up. I give my endorsement to Lions Siding and Roofing!
Thanks again!
  
 
      Posted on Google  
   
   Theresa Forrest 
 
 
 
 Trustindex verifies that the original source of the review is Google. The staff (sales, project manager, owner) were phenomenal.  They were courteous, thorough, and very customer focused.  Their prices were competitive, but what set them apart was their customer touch. I highly recommend them.
  
 
      Posted on Google  
   
   Elizabeth McDevitt 
 
 
 
 Trustindex verifies that the original source of the review is Google. Lions roofing did a wonderful job replacing my roof and installing two new skylights. They were efficient and extremely conscientious about protecting landscaping and cleaning up each day after work. Yuri was readily available for whatever questions I had. I would recommend this company without reservation.
  
 
      Posted on Google  
   
   ElizabethR 
 
 
 
 Trustindex verifies that the original source of the review is Google. Lions Roofing recently installed a new roof and replaced siding at our home.Ty was incredible throughout the sales process and very easy to work with. The installation crew was courteous, extremely hard working and left the site spotless each day. We would like to extend a big thank you to Luis, Lago, Thiago, Marcia, Paulo, Christian, Cesar, Fausto, Cristina, Fred, Tiago and Carlos for doing such a fantastic job!
Yuri, many thanks to you and the team.
  
 
      Posted on Google  
   
   Kathleen Oelschlager 
 
 
 
 Trustindex verifies that the original source of the review is Google. Lions Roofing did an excellent job re-siding our home and installing new gutters. They were very thorough, responsive, and easy to work with throughout the entire process. Communication was great, and the finished work looks fantastic. Highly recommend!
  
 
      Posted on Google  
   
   Melissa Greene 
 
 
 
 Trustindex verifies that the original source of the review is Google. Lions Siding and Roofing recently replaced all of the exterior trim and siding at my house. They did a great job and the house looks amazing, I'm very happy with the work they did and would highly recommend them to anyone looking to have work done to their house.

PREMIUM MATERIALS FOR COASTAL EXPOSURE

Andersen 400 & A-Series

The gold standard for Dennis. These units offer the structural rigidity required for coastal wind loads.

Marvin Ultimate

High-strength fiberglass exteriors that stand up to salt spray without fading or corroding.

Harvey & Provia

Exceptional thermal performance for homeowners seeking maintenance-free efficiency without compromising on Cape Cod style.

WHY THE LIONS STANDARD MATTERS

Local Expertise

We understand the specific building codes and wind-load requirements for Dennis.

Structured Management

You will have a dedicated point of contact. No guesswork on delivery dates or installation timelines.

Property Respect

We treat your home like an investment, not a construction site.

TAKE THE NEXT STEP TOWARD A SECURE HOME

Stop struggling with stuck sashes and foggy glass. Contact Lions Siding & Roofing for a professional assessment of your home’s seals and openings.

NAVIGATING DENNIS REQUIREMENTS

If your property is located within a historic district or requires specific environmental permitting, Lions Siding & Roofing handles the details. We provide the specifications and documentation needed to ensure your project moves forward without administrative delays.

SERVING ALL VILLAGES OF DENNIS

We provide expert window and door replacement throughout the region: