Crawl Space CleaningResidential

Deteriorated Underfloor Insulation Removal and Sanitizing in Weston

Name: Crawl Space Cleaning Project Video, Weston, CT
Uploaded: 2026-08-14T12:00:00Z
Description: Real photos from this Weston job: the failed batts sagging out of the joist bays, and the wiring and ductwork the removal had to work around.

Weston, CTAugust 2026Crawl Space Cleaning

Sagging kraft faced fiberglass insulation falling from the floor joist bays under a Weston, CT home

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Batts sagging out of the bays with the paper facing torn away. Wiring and ductwork run through nearly every bay.

Project Video

See How the Work Was Done

Real photos from this Weston job: the failed batts sagging out of the joist bays, and the wiring and ductwork the removal had to work around.

1,265 sq ft

Area treated

1,265 sq ft

Insulation removed

One 15 yd load

Disposal

August 2026

Completed

Initial Assessment

What Happened

The insulation under this Weston, CT home had reached the end of its life. Kraft faced fiberglass batts filled 1,265 square feet of floor joist bays, and across that whole footprint the material had lost its grip: batts sagged out of the bays, paper facing had torn away, and in places the fiberglass had broken open and dropped. The bays were also crowded, with wiring runs, sheet metal ductwork and plumbing threaded through nearly every one, so none of it could be pulled in clean sheets. Green Restoration removed and bagged the full 1,265 square feet by hand, working around the mechanicals rather than through them, then HEPA vacuumed the exposed joist bays, the underside of the subfloor decking and the framing. Every cleaned wood surface was then treated with an EPA-registered antimicrobial, and the entire removal left the property in a single 15 yard disposal load.

Damage Inventory

Scope of Damage

Floor Joist Bays

Severe

Deteriorated kraft faced fiberglass batt insulation across all 1,265 square feet of joist bays, sagging out of the bays with facing torn and material breaking apart.

Subfloor Decking & Framing

Moderate

The decking and framing above the failed insulation were left exposed and dirty once the batts came out, and were HEPA vacuumed and treated across the full footprint.

Mechanical Runs

Light

Wiring, sheet metal ductwork and plumbing ran through nearly every bay, so removal was done by hand around the mechanicals rather than in continuous pulls.

Restoration Process

How We Solved It

1
Insulation Removal & Bagging
All 1,265 square feet of deteriorated fiberglass batt removed from the joist bays and bagged on the spot, worked by hand around the wiring, ductwork and plumbing running through the bays.
2
HEPA Vacuuming
The emptied joist bays, the underside of the subfloor decking and the framing HEPA vacuumed across the full 1,265 square feet, so loose fiberglass and settled debris were captured rather than redistributed.
3
Antimicrobial Treatment
An EPA-registered antimicrobial applied to the cleaned wood framing and subfloor decking after removal and cleaning, not in place of it.
4
Disposal
A 15 yard dumpster staged on site took the full removal, and all bagged insulation and debris left the property in one documented disposal load.

Equipment On-Site

Tools & Equipment Used

HEPA vacuums

EPA-registered antimicrobial

Full PPE for overhead insulation removal

15 yard disposal container

Frequently Asked

Questions Homeowners Ask

Why does underfloor insulation fall out of the joist bays?

Moisture and time. Humid air under a floor soaks into fiberglass batts and into the kraft paper facing and staples holding them up, until the facing tears and the batts sag out of the bays under their own weight. Once a batt drops on one end it pulls further away, and the fiberglass starts breaking apart, which is what had happened across this Weston home.

Does old insulation have to be removed, or can new insulation go over it?

Deteriorated batts should come out. Adding new insulation over failed material traps whatever is in the old batts against the subfloor and hides the condition of the wood above it. Removing first also allows the joist bays and decking to be cleaned and treated, which is not possible once new material is in place.

Why HEPA vacuum after removing insulation?

Pulling deteriorated fiberglass releases loose fibers and years of settled dust into the space. HEPA filtration captures those fine particles instead of returning them to the air, which an ordinary shop vacuum does not do. On this project the emptied bays, the subfloor decking and the framing were all vacuumed before any treatment was applied.

What does the antimicrobial treatment do?

It is applied to cleaned wood framing and subfloor decking after the physical removal and vacuuming are finished. Physical removal takes out the bulk of the problem, and the EPA-registered treatment addresses what remains on the surfaces. Applied over material that has not been cleaned first, a treatment accomplishes very little.

Does work like this have to happen around wiring and ductwork?

Usually, yes. On this Weston project wiring runs, sheet metal ductwork and plumbing passed through nearly every joist bay, so the insulation could not be pulled in continuous sheets. It came out by hand, bay by bay, around the mechanicals. That raises the labor involved and is a real factor in what work like this costs.

How is the removed insulation disposed of?

It is bagged as it comes out rather than piled on the floor, then removed from the property. This project used a 15 yard container staged on site, and the full removal left in a single documented disposal load.

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