DG Insulation logo — blue DG letters with a spray foam gun spraying foam in the shape of a house roof DG INSULATIONSpray Foam Specialists (781) 506-6119

Massachusetts Spray Foam Specialists

Insulation that keeps your home warm in winter and cool in summer — and helps lower your energy bills all year long. Residential & commercial.

Free QuotesCall or message — no obligation
Residential & CommercialHomes, new construction & remodels
Based in Weymouth, MAServing Greater Boston & the South Shore
Comfort in Every SeasonWarm in winter, cool in summer

Our Services

Every type of insulation your project needs — installed by specialists. Not sure which one is right for your home? Ask us for a free quote and we'll recommend the best option.

Service

Fiberglass

The proven, budget-friendly classic. Batts and rolls fitted precisely between studs and joists for dependable comfort in every season.

  • Walls, attics, floors & ceilings
  • Great value for new construction and remodels
Service

Blow-In

Loose-fill insulation blown into attics and closed wall cavities. Perfect for topping up an older attic without tearing anything open.

  • Fast installation, minimal disruption
  • Fills around pipes, wires and hard-to-reach spots
Service

Rockwool

Mineral wool insulation with outstanding fire resistance and soundproofing — a favorite for interior walls, bathrooms and media rooms.

  • Fire-resistant and water-repellent
  • Excellent sound control between rooms

And many more — attic insulation, wall insulation, basement & crawl space insulation, insulation removal and complete packages for new construction. Tell us about your project →

Open-Cell vs. Closed-Cell

Both seal air leaks far better than traditional insulation. The right choice depends on the space, the R-value you need and your budget.

Closed-Cell Spray Foam

R-6 to R-6.5 per inch

Dense and rigid — the strongest, most insulating foam per inch.

  • Highest R-value — ideal where space is limited
  • Acts as a moisture / vapor barrier
  • Adds structural strength to walls and roofs
  • Best for: attics & roof decks, basements, crawl spaces, exterior walls

Open-Cell Spray Foam

R-3.6 per inch

Soft and flexible — a great air seal and sound barrier for interior spaces.

  • Expands to fill every nook and cranny
  • Excellent sound dampening between rooms
  • Lower cost per square foot than closed-cell
  • Best for: interior walls, attics, soundproofing

Our Work

From our jobs and our Instagram — follow @dg_insulation_spy to see the latest projects.

Closed-cell spray foam installed on an attic ceiling between wooden joists
Closed-Cell Spray Foam — AtticA sealed, high-R attic that keeps heat in all winter.
Finished spray foam insulation filling the wall cavities of a room next to a window
Spray Foam — Exterior WallsEvery cavity filled flush — no gaps, no drafts.
Pink fiberglass batt insulation installed between wall studs in a bright room
Fiberglass Batts — Wall InstallationComfort in every season — warm in winter, cool in summer.
Rockwool mineral wool insulation fitted between wooden studs in interior walls, seen through a doorway
Rockwool — Interior WallsDense mineral wool batts fitted tight in every cavity for fire resistance and sound control.
Rockwool insulation installed in framed interior walls around an electrical panel during new construction
Rockwool — New ConstructionWhole rooms insulated wall to wall before drywall — quieter, safer, more comfortable.
Full wall of rockwool mineral wool batts installed between studs in a new home
Rockwool — Full Wall CoverageEvery bay filled floor to ceiling — no gaps, no settling, lasting performance.
Hallway lined with rockwool insulation in the walls during home construction
Rockwool — Hallway & BedroomsSound dampening between rooms, so bedrooms stay quiet and private.

How It Works

01

Call or Message

Reach out by phone, WhatsApp or Instagram and tell us about your home or project.

02

Free Quote

We look at the space, talk through the options — spray foam, fiberglass, blow-in or rockwool — and give you a free, detailed quote.

03

Installation

Our crew installs your insulation cleanly and professionally, sealing every gap.

04

Enjoy the Comfort

A quieter, more comfortable home — warm in winter, cool in summer, with lower energy bills.

Areas We Serve

DG Insulation is based in Weymouth, Massachusetts, and serves all of Massachusetts — including Greater Boston and the South Shore — plus the areas bordering Massachusetts in Rhode Island, Connecticut, New Hampshire and Vermont.

Massachusetts Weymouth Greater Boston South Shore Rhode Island border areas Connecticut border areas New Hampshire border areas Vermont border areas

Common Questions

How much does insulation cost?

It depends on the size of the area, the type of insulation and the thickness needed to hit the right R-value. That's why we offer a free quote — call (781) 506-6119 and we'll price your exact project, with no obligation.

Which insulation is best for my home?

Spray foam gives the highest performance and the best air seal. Fiberglass is the budget-friendly classic, blow-in is ideal for topping up attics, and rockwool is excellent for fire resistance and soundproofing. Tell us about your home and we'll recommend the right fit.

What's the difference between open-cell and closed-cell foam?

Closed-cell is dense, delivers R-6 to R-6.5 per inch and resists moisture — great for attics, basements and exterior walls. Open-cell is softer, delivers about R-3.6 per inch, costs less and is great for interior walls and sound control.

Do you work on new construction and remodels?

Yes — we insulate new homes, additions, remodels and existing homes, for both residential and commercial projects.

What areas do you serve?

All of Massachusetts — we're based in Weymouth and cover Greater Boston, the South Shore and surrounding areas — plus the areas bordering Massachusetts in Rhode Island, Connecticut, New Hampshire and Vermont.

How do I get started?

Call or WhatsApp (781) 506-6119, or send the quote form below. Tell us where your home is and what you'd like insulated, and we'll set up your free quote.

Get Your Free Quote

The fastest way is a quick call — or fill out the form and send it straight to us on WhatsApp or by text.

(781) 506-6119

DG Insulation · Weymouth, Massachusetts

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