Englewood Insulation › Crawl Space Insulation
Crawl Space Insulation in Englewood, CO
Under Englewood’s old houses sit cellars and crawls from another era: stone walls, dirt floors, and air your first floor breathes all day. We turn them dry, sealed, and warm.
- Free cellar & crawl inspection
- Moisture readings, documented
- Old-foundation experience
Your local crew, minutes away
Commerce City HQ · both Englewood ZIPs
What is living under your bungalow?
Old foundations create conditions modern basements never see. What our meters and flashlights find under Englewood homes:
- Frequency across Englewood inspections. Yours gets humidity and wood-moisture numbers before any scope is written.
TRUSTED PRODUCTS & PARTNERS
The Brands Behind Every Grizzly Install
We don’t install mystery material. Every Arvada project uses products from the industry’s most trusted manufacturers.
01THE PROBLEM
The 1920s Put a Dirt Room Under Your House. It Never Left.
Before slabs and sealed basements, houses sat over cellars and shallow crawls with bare earth floors. A century later that earth still breathes gallons of moisture into the structure daily, and the stack effect delivers it to your living room. Sealing the ground is the fix the era never had.
ABare earth doing what bare earth does
An uncovered dirt floor releases constant vapor no matter how dry Colorado feels. Under Downtown and Romans Park homes it has fed musty smells and floor rot since the Coolidge administration, a taped, sealed liner ends it permanently.
BFoundations with a century of gaps
Stone and first-generation concrete walls open seams as they age, feeding both drafts and rodents into the space below your floor. Sealing and insulating the perimeter closes the era’s gaps in one pass.
CThe cellar-crawl no one has entered in years
Englewood’s half-cellars collect what decades leave: fallen batts, construction scrap, rodent bedding. Clearing and sanitizing that space is step one of making it part of the house instead of a liability under it.
DRadiator runs & pipes in the cold zone
Old hydronic runs and water lines cross these spaces uninsulated, one subzero stretch from disaster. Bringing the crawl inside the thermal envelope protects the plumbing a century built around it.
02THE FIX
Seal the Ground, Warm the Walls, or Both?
Old under-house spaces need a scope built from their moisture numbers, not a package deal. Here is the honest split:
03WHAT TO EXPECT
One Day Under a Century-Old House.
How an Englewood cellar-crawl project unfolds:
Humidity, wood moisture, and structure condition confirm the scope. Hundred-year-old spaces get assessed on their own terms, not against suburban assumptions.
Fallen material, scrap, and nesting evidence bag out; contaminated zones get sanitized. The space earns its liner by being genuinely clean first.
Foundation gaps close with mortar-compatible sealants, penetrations get foamed, and the rim band above the old walls gets closed-cell.
The barrier rolls over the dirt with overlapped taped seams and climbs the stone on mechanical fasteners, insulation follows the scope from there.
Seams verified, every zone photographed, space left cleaner than any decade left it. The floors above notice by nightfall.
The Grizzly 100% Guarantee
If the work isn't right, we make it right. That's the reputation we've built across the Front Range, and it's our only sales pitch.
04COST & SAVINGS
What Crawl & Cellar Work Costs in Englewood
No two old foundations match, so the price is built under your house, not over the phone. Four drivers, itemized after a free inspection.
Space geometry
Footprint, mixed depths, and working clearance
Moisture verdict
Perimeter scope versus full ground-seal
Clear-out load
Debris and old material removal first
Foundation era
Stone detailing takes longer than block
Three ways the net cost drops
Xcel Energy rebates
Wall insulation and sealing measures under old homes frequently qualify, flagged in your written estimate.
Federal 25C tax credit
30% of qualifying insulation costs, up to $1,200 per year, under the Inflation Reduction Act.
Floors, pipes & air, all at once
One project warms the floors, protects century-old plumbing, and cleans up the air the whole house breathes.
★ ★ ★ ★ ★
"The cellar-crawl under our 1915 house had a dirt floor and that smell the whole block knows. Liner, sealed stone walls, foamed rim, one long day. The hardwoods stopped groaning and the smell is simply gone."
J
Joan & Pete L.
Homeowners · Downtown Englewood · Ground-Seal Encapsulation
05QUESTIONS
Crawl Space Work in Englewood, Answered Straight
Many pre-war Englewood homes sit over a part-height cellar joined to shallow crawl wings, usually with bare earth somewhere. If your first floor is cold, the house smells musty in summer, or nobody has been down there in years, the free inspection with moisture readings answers it definitively.
Geometry, the moisture verdict, clear-out load, and foundation era set it. Perimeter insulation under a dry house is the lighter ticket; a bare-earth encapsulation with stone detailing is bigger and permanently retires the dampness. Itemized in writing, always.
Yes, that combination is exactly what encapsulation was developed for. The liner seals the earth, mechanical fastening and sealants handle the irregular stone, and the rim gets foam. Old foundations take detailing patience, which is why crews that only do tract homes struggle here.
Almost always, because that smell is the cellar’s air arriving upstairs via the stack effect. Seal the ground, close the era’s gaps, dry the space, and the source is gone rather than masked.
Most Englewood under-house projects run one working day; heavy clear-outs or complex stonework can add a second. The crew works below while the household runs normally above.
It helps, and we plan for it. A sealed ground liner reduces soil-gas entry on its own, and if the house has or needs mitigation, the encapsulation is coordinated with it. Arapahoe County sits in a high-radon region, testing after under-house work is smart and we will say so plainly.
06EVERY COMMUNITY WE SERVE
Crawl Space Insulation Near Englewood
DenverArvadaLakewoodEnglewoodCentennialLittletonGoldenGreenwood VillageBoulderLafayetteHighlands RanchLouisvilleErieEvergreenCastle Rock
07GET STARTED
Retire the Dirt Room Under the House.
Free inspection with real moisture numbers. Old-foundation detailing done right. Dry, sealed, and warmer above, in about a day.
- (303) 854-6221 · Mon–Sat 8 AM–5 PM · Sun by appointment
- info@grizzlyinsulationco.com, fast replies, usually same day
- 7140 Ivy St Unit B, Commerce City, CO 80022, 10 miles from Arvada
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