Windows and doors installed with planning, not guesswork.

Windows and doors are among the most vulnerable areas of a home’s exterior. When installation details are overlooked, moisture intrusion, drafts, and hidden damage often follow—sometimes years later.

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Why Window and Door Problems Often Appear Years After Installation

Most window and door issues don’t begin with the unit itself. They start with improper installation, missing flashing, poor sealing, or a lack of coordination with siding and trim systems.

These failures are rarely visible right away. Over time, moisture intrusion around openings can lead to drafts, rot, mold, and interior damage, often long after the installer is gone.

In coastal New England, where wind-driven rain and seasonal movement are constant, proper detailing around windows and doors is essential to protecting the structure of the home.

Long-term window and door failures often result from:

Our Windows & Doors Process

A structured approach focused on protection, precision, and long-term performance.

Opening Evaluation & Condition Review

We evaluate existing openings, surrounding materials, and moisture exposure to determine the safest installation approach before work begins.

Planning & System Coordination

Flashing methods, sealing details, insulation, and integration with siding and trim are planned in advance to protect the opening.

Site Preparation & Protection

Interior and exterior areas are protected to maintain cleanliness and respect for the home throughout the project.

In-House Installation & Active Supervision

Our in-house crews install windows and doors under active supervision, ensuring precision at every step.

Final Inspection & Completion

Each project concludes with a final inspection to confirm proper operation, sealing, and system integration.

we work with high-quality products

WHY WE ONLY INSTALL FULL-FRAME
(NEW CONSTRUCTION) WINDOWS

While inserts can appear faster or less invasive, they often reuse existing flashing and do not allow proper resealing or integration with the siding and weather-resistive barrier. Over time, this can lead to water intrusion, hidden rot, and costly repairs.
Our philosophy is simple:
We would rather solve the problem correctly than create a new one simply because it is more profitable or faster.
For that reason, our window replacements are performed using new construction (full-frame) windows, allowing us to properly address flashing, sealing, and integration from the outside in.

THE DIFFERENCE PLANNING AND OVERSIGHT MAKE.

Each project shown here was carefully planned, supervised, and executed by our in-house team.

TRUSTED BY CAPE COD & SOUTH SHORE HOMEOWNERS

Here’s what homeowners say about the clarity, communication, and care they experienced throughout their project.

Windows and Doors Selected for Performance and Fit

Choosing the right windows and doors involves more than appearance or efficiency ratings. Proper fit, installation, and system integration are critical to long-term performance.

Windows

We install quality window systems selected for durability, performance, and compatibility with New England homes. Each installation is planned to manage moisture, insulation, and structural integrity.

Exterior Doors

Exterior doors are selected and installed to provide security, weather resistance, and proper sealing—protecting one of the most exposed entry points of the home.
All windows and doors are installed by our in-house crews following manufacturer specifications and supported by manufacturer-backed warranties.

Common Windows and Doors Questions

Do new windows and doors really improve home performance?
Yes—when properly installed. Installation details matter as much as the product itself.
Yes. Interior and exterior areas are protected, and the site is kept organized throughout the project.
Permits are handled in-house when required, ensuring code compliance.
All work is completed by our in-house crews—never subcontracted.

A CLEAR PATH FORWARD

We provide homeowners with clarity, structure, and peace of mind from the first review.

THE LIONS DIFFERENCE:

ACCOUNTABILITY & RESPECT

No Subcontractors

You are hiring Lions, so you get Lions. Our 16+ member team is in-house, trained, and accountable. We do not hand your project off to the lowest bidder.

The "Magnetic Sweep"

We know that nails and debris are a safety hazard for your family, pets, and tires. We perform a thorough magnetic sweep of your lawn and driveway upon completion.

Transparent Pricing

No hidden fees. If we discover structural damage (rotten wood) during the tear-off, we stop, document it with photos, and get your approval before fixing it.

DESIGNED FOR COASTAL NEW ENGLAND CONDITIONS

Homes across Cape Cod and the South Shore are exposed to wind, moisture, salt air, and seasonal temperature changes.

Our installation methods account for these conditions, helping protect your home from drafts, water intrusion, and premature failure.

Don't Risk Your Home With Inexperienced installers - Choose proven professionals.

A window is only as good as the crew that installs it and the seals they use. Invest in a lasting home with Cape Cod’s most reliable team.

Move Forward With the Lions Standard