Cold Walls Are a Solvable Problem.
Most existing homes have hollow wall cavities — or fiberglass batts that have settled, shifted, or were never installed correctly. Dense-pack cellulose fills those cavities without tearing out your walls.
Signs Your Walls Need Insulation
Dense-Pack Cellulose: The Right Way to Insulate Existing Walls
Dense-pack cellulose is installed by drilling small holes in the wall — either from the exterior (through siding) or interior (through drywall) — and blowing cellulose in at high density. At 3.5 lbs/ft³, dense-pack cellulose won't settle, won't shift, and won't leave voids. It fills the entire cavity including around wires, pipes, and blocking.
No wall tearout
Small holes are patched and painted — no drywall replacement, no major renovation.
Won't settle
Dense-pack density prevents the settling and void formation common with loose-fill fiberglass.
Air resistance
At proper density, cellulose provides meaningful air resistance in addition to thermal resistance.
Moisture buffering
Cellulose can absorb and release moisture without losing performance, reducing condensation risk.
Our Process
Cavity Mapping
We locate studs, blocking, and fire stops to map each individual cavity before drilling.
Drilling
Small holes (typically 2") are drilled at the top of each cavity, or through exterior siding when preferred.
Dense-Pack Installation
Cellulose is blown in at high density (3.5 lbs/ft³) to fill each cavity.
Patching & Cleanup
Holes are plugged and patched. Interior work is ready for paint. Exterior work is patched to match siding.
Find Out What's Inside Your Walls
A thermal imaging scan during a Home Performance Assessment can confirm whether your walls have insulation — and where the voids are. Or request an estimate directly.