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Crawl Space & Basement Spray Foam Insulation in Maine

Cold floors. Drafty crawl spaces. High energy bills. Moisture and humidity problems.

These aren’t just minor inconveniences in Maine—they’re signs your home is losing the war against our long winters. Without a proper thermal break, your crawl space or basement effectively acts as a giant intake for freezing air and damp soil moisture.

At Basement Improvements, LLC, we install professional spray foam systems designed specifically for the Maine climate. We focus on sealing the gaps that traditional insulation misses, ensuring your home stays warm, dry, and structurally sound year-round.

Don’t wait until it is too late. Contact our sprayfoam experts at (207) 489-6519 to schedule an inspection.

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COMMON CRAWL SPACE & BASEMENT INSULATION CHALLENGES

Cold Floors & Expensive Heat Loss

If you need wool socks indoors to stay warm, your crawl space could be the reason. Cold air from below takes heat from your living space, making your furnace work harder to keep up.

Persistent Moisture & Humidity

Wet Maine soil causes ongoing moisture issues. Fiberglass insulation soaks up this humidity, then sags, grows mold, and can even lead to wood rot instead of stopping it.

The Risk of Frozen Pipes

Maine winters are tough on homes with poor insulation. Pipes in drafty crawl spaces or rim joists can freeze, leading to emergency repairs and costly water damage.

TAILORED SPRAY FOAM INSULATION SOLUTIONS

Our systems are built for local home construction and the reality of our seasonal temperature swings.

Closed-Cell Spray Foam

We use high-density, closed-cell foam because it’s a powerhouse. It provides the highest R-value per inch and creates a rock-solid air seal that moisture simply cannot penetrate. It’s the ideal choice for foundation walls and rim joists.

 

A plumber repairing a sump pump in a flooded basement
A plumber repairing a sump pump in a flooded basement

Foundation Wall & Rim Joist Insulation

By applying foam directly to these critical transition points, we create a continuous thermal “envelope.” This isn’t just about padding; it’s about stopping air movement. The result? Lower heating bills and a noticeably more comfortable home.

Humidity & Moisture Control

When we pair spray foam with a full encapsulation, we effectively turn your crawl space into a dry, conditioned part of your home. This stabilizes the environment, kills the “musty” smell, and protects your floor joists from rot.

A plumber repairing a sump pump in a flooded basement
A plumber repairing a sump pump in a flooded basement

WHY SPRAY FOAM IS BETTER FOR MAINE HOMES

Fiberglass batts just aren’t built for our climate. Here is why spray foam wins:
  • It’s a True Air Barrier: It expands into the tiny cracks and knots in your framing that traditional materials can’t reach.
  • Zero Water Absorption: Closed-cell foam won’t hold moisture. It acts as a buffer against condensation and groundwater vapor.
  • Structural Longevity: It keeps the heat in your house, reducing the strain on your HVAC and protecting your plumbing from deep-freeze cycles.
  • Total Protection: When combined with a vapor barrier, it creates a complete system that defends against both cold and rot.
Closed-Cell Spray Foam

We use high-density, closed-cell foam because it’s a powerhouse. It provides the highest R-value per inch and creates a rock-solid air seal that moisture simply cannot penetrate. It’s the ideal choice for foundation walls and rim joists.

Foundation Wall & Rim Joist Insulation

By applying foam directly to these critical transition points, we create a continuous thermal “envelope.” This isn’t just about padding; it’s about stopping air movement. The result? Lower heating bills and a noticeably more comfortable home.

Humidity & Moisture Control

When we pair spray foam with a full encapsulation, we effectively turn your crawl space into a dry, conditioned part of your home. This stabilizes the environment, kills the “musty” smell, and protects your floor joists from rot.

WHY SPRAY FOAM IS BETTER FOR MAINE HOMES
Fiberglass batts just aren’t built for our climate. Here is why spray foam wins:
  • It’s a True Air Barrier: It expands into the tiny cracks and knots in your framing that traditional materials can’t reach.
  • Zero Water Absorption: Closed-cell foam won’t hold moisture. It acts as a buffer against condensation and groundwater vapor.
  • Structural Longevity: It keeps the heat in your house, reducing the strain on your HVAC and protecting your plumbing from deep-freeze cycles.
  • Total Protection: When combined with a vapor barrier, it creates a complete system that defends against both cold and rot.

WHY CHOOSE BASEMENT IMPROVEMENTS, LLC?

We are a local Maine business, not a corporate franchise. You get the attention to detail and honest advice you’d expect from a neighbor.

The BAsement Improvements Expertise
Local Climate Expertise -
We live here. We know exactly how Maine’s freeze-thaw cycles affect your specific foundation type.
Crawl Space Encapsulation Icon
No "One-Size-Fits-All" -
Every home has different leak points. We inspect your structure first and recommend the exact application you need - nothing more.
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Reliable Craftsmanship -
We use top-tier materials and professional-grade equipment to ensure the foam cures correctly and lasts for the life of your home.

Hear From Our Customers

Our Service Area

Located in Sanford, Maine, we are proud to serve our home city and surrounding areas. Check the map to see if you fall within our service area. Fall outside our service area? Give us a call and we’ll make time to come out and see you!

Project Service Area
Located in Sanford, Maine, we are proud to serve our home city and surrounding areas. Check the map to see if you fall within our service area. Fall outside our service area? Give us a call and we’ll make time to come out and see you!
:Cities
  • Lewiston
  • Auburn
  • Lisbon
  • Sabattus
:Cities
  • Portland
  • South Portland
  • Westbrook
  • Scarborough
:Cities
  • Farmington
  • Wilton
  • Jay
:Cities
  • Augusta
  • Waterville
  • Gardiner
  • Hallowell
:Cities
  • Rockland
  • Camden
  • Rockport
:Cities
  • Wiscasset
  • Boothbay Harbor
  • Damariscotta
:Cities
  • Norway
  • Paris
  • Bethel
:Cities
  • Bath
  • Brunswick
  • Topsham
:Cities
  • Skowhegan
  • Madison
  • Fairfield
:Cities
  • Belfast
  • Unity
  • Lincolnville
:Cities
  • York
  • Biddeford
  • Saco
  • Kennebunk
:Cities
  • Laconia
  • Meredith
  • Gilford
:Cities
  • Conway
  • Wolfeboro
  • North Conway
:Cities
  • Manchester
  • Nashua
  • Amherst
  • Bedford
:Cities
  • Concord
  • Hooksett
  • Bow
:Cities
  • Portsmouth
  • Salem
  • Derry
  • Rochester
:Cities
  • Dover
  • Rochester
  • Somersworth
Is spray foam insulation actually worth it in Maine?

Absolutely. Given the length of our winters, the energy savings alone usually pay for the install over time. You’ll notice the difference in floor temperature almost immediately.

Does it really help with cold floors?

Yes. Cold floors are usually caused by "air wash"—cold air blowing across your subfloor from the outside. Spray foam stops that air movement entirely, making the floor above feel much more like the rest of your house.

Can this prevent my pipes from freezing?

It’s a massive layer of defense. By sealing the rim joists and foundation walls, you keep the ambient temperature in your crawl space much higher, even when the thermometer outside hits double-digits below zero.

Is it good for moisture control?

Closed-cell foam is one of the best moisture barriers available. It stops condensation from forming on your cool foundation walls, which is the primary cause of mold in Maine basements.

Where exactly do you apply it?

We focus on the "hot spots": crawl space walls, basement foundation walls, and especially the rim joists (where your house sits on the foundation).

How is this different from fiberglass?

Fiberglass is like a wool sweater - it’s warm, but the wind blows right through it. Spray foam is like a high-end winter parka; it provides the warmth and blocks the wind.