Windows Replacement in South Shore, MA
Replacement Windows on the South Shore
Old, drafty windows bleed heat every New England winter and make your AC work overtime all summer. Giannini Roofing & Siding handles residential window replacement and repair across Plymouth County and the South Shore of Massachusetts. Vinyl replacement windows, fiberglass upgrades, bay and bow rebuilds, storm-damaged sashes, full-house retrofits. We do it all.
Every window replacement starts with a free in-person estimate and ends with a fixed written quote, a licensed and fully insured Giannini crew on site, and a lifetime labor guarantee. We match your existing trim and casing, flash every opening to stop air and water infiltration, and haul the old units off site when we leave. Family-owned, South Shore based, 20-plus years serving Whitman, Abington, Rockland, Cohasset, and surrounding towns.
Double-Hung & Casement
Tilt-in double-hung and crank-out casement styles in vinyl, fiberglass, or wood-clad frames. Low-E glass and argon-fill options available on most lines.
Bay & Bow Windows
Storm & Repair Work
Broken seals, fogged glass, rotted sills, and storm-damaged sashes. Most repairs are handled in a single visit, and we will tell you up front when replacement is best.
Windows Built for South Shore Weather
Salt air off the bay, wind-driven rain, and New England winters put residential windows through more than most regions ever see. A window that performs in Ohio will not always hold up in Scituate. That is why material choice and install detail matter more here than in most markets.
For coastal homes in Cohasset, Scituate, Marshfield, Duxbury, and Hull, we lean toward fiberglass frames and corrosion-resistant hardware. Vinyl hinges and cranks close to the water tend to corrode in a few seasons. We cover this tradeoff in more detail in our post on why coastal homes need different materials than inland properties, and we will walk you through it honestly at the estimate.
For older Colonials, Capes, and Victorians across Hingham, Plymouth, Weymouth, and Cohasset, the grille pattern and sash proportions have to match the home. We work with simulated divided lite (SDL) grids, true divided lite custom orders, and historically accurate profiles so the replacement reads right from the street.
Our satisfied customers say it best…
South Shore homeowners trust Giannini Roofing & Siding with their window replacement projects because we treat every home like our own. If we have put new windows in your house, we would be grateful if you shared your experience. Your review helps neighbors across Whitman, Abington, Rockland, Cohasset, and beyond find a window contractor they can count on. Please take a moment to leave a Google review and let others know what you think.
How Window Replacement Works at Giannini
Most homeowners put off window replacement because they do not know what to expect. Here is how we handle it, step by step.
1. Free in-person estimate
We come out, measure every opening, and note the condition of your existing trim and siding. You get a walkthrough of frame materials, vinyl, fiberglass, and wood-clad, with honest pros and cons. Most estimates are returned within 1 to 3 days.
2. Custom order and scheduling
Replacement windows are built to your exact openings, so expect a few weeks of factory lead time between signed contract and install date. We confirm details like color, grid pattern, and hardware finish before the order goes in.
3. Protect the home on install day
The crew covers floors, moves furniture when needed, and protects landscaping around the work area. Most homeowners can carry on with their day while we work.
4. Remove old sashes and inspect the opening
Old windows come out cleanly and the rough opening gets inspected for rot, water damage, or failed flashing. If anything shows up that needs attention, we walk you through the repair scope before moving forward.
5. Insulate and flash the opening
Proper window installation calls for foam insulation around the frame, flashing tape at the sill, and counter-flashing at the head. This detail is what separates a window that performs from one that leaks a few winters in.
6. Set, shim, and fasten the new window
The new unit is leveled, shimmed, and fastened per manufacturer spec. Every sash, crank, and lock gets checked before moving to the next opening.
7. Cleanup and walkthrough
Before we leave, the work area gets cleaned up and your old windows are hauled off site. Our lifetime labor guarantee is in writing, and we review warranty paperwork with you before we head out. See recent installs on our projects page.
Why Choose Giannini Roofing
Local Expertise Backed by Family Values
Family-owned, South Shore based, and 20-plus years serving Whitman, Abington, Rockland, Cohasset, and surrounding towns. Honest advice, fair pricing, and respectful service on every project.
- Licensed, fully insured, and CertainTeed ShingleMaster certified
- Free in-person estimates returned within 1 to 3 days
- Flexible financing to fit your budget
- Bilingual team fluent in English and Spanish
- Lifetime labor guarantee and manufacturer warranties
- 24/7 emergency support
Pairing windows with other work? We also handle roofing, siding, gutters, and doors. Contact us for a free estimate.
Window Replacement FAQs
How long does a full-house window replacement take?
Most full-house window replacements are completed in one to two days on site. Factory lead time on custom orders adds a few weeks before install day. You get a firm install date once the windows ship.
Do replacement windows really lower my energy bill?
Yes, especially on older homes. ENERGY STAR certified windows for the Northern Climate Zone are rated for lower heat loss than older single-pane or failed 1980s vinyl units. Homeowners with original aluminum windows usually see the biggest first-winter difference.
Can windows be installed in the winter?
Yes. Winter installs are routine. Each window comes out and goes back in on the same opening, so the house is only open for a short time per window.
Do I need a permit to replace my windows?
For straight replacements in the same opening, most South Shore towns do not require a homeowner permit. Resizing an opening or cutting in a new window where none existed does trigger a building permit. We handle the paperwork in those cases.
Can you match the look of a historic South Shore home?
What is the difference between vinyl, fiberglass, and wood-clad frames?
Vinyl is lowest cost and maintenance-free. Fiberglass costs more but holds up better in salt air and extreme temperature swings, which matters for homes near the water. Wood-clad (wood interior, aluminum or fiberglass exterior) is the premium option for historic and higher-end homes where the interior wood shows.
Why Choose Giannini Roofing
Local Expertise Backed by Family Values
As a South Shore–based, family-owned business, we take pride in every roof we install and repair. Our community accountability means you’ll always get honest advice, fair pricing, and respectful service.
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20+ years serving Whitman, Abington, Rockland, Cohasset & beyond
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Licensed, insured, and CertainTeed ShingleMaster–certified
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Flexible, affordable financing options to suit your budget
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Bilingual team fluent in English & Spanish for clear communication
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Lifetime labor guarantee & manufacturer warranties for peace of mind