Blown-In Attic Insulation in Salt Lake City

Cellulose and fiberglass attic top-ups for older Utah homes. Air sealing first, then dense coverage to R-49–R-60 with Wattsmart documentation.

Most heat loss in a pre-2000 Salt Lake Valley home still walks out through the attic — not because homeowners neglect maintenance, but because code minimums from the original build were a fraction of what we target today. Blown-in attic insulation is the highest leverage retrofit when the air barrier at the ceiling plane is tightened first. Without sealing can-light penetrations, top plates, and chase walls, new fibers only filter leakage instead of stopping it.

What we actually install

We specify depth, density, and coverage around vent paths so performance matches the label on the bag. That means wind-washing barriers at eaves where needed, dams at skylights, and explicit details around pull-down stairs or hatches — the places R-value charts usually ignore. For many Sugar House and Millcreek homes, we are covering legacy R-19 batts that have settled or were installed with gaps; we treat those as a base layer and build conditioned performance with blown coverage.

Rebates and paperwork

Rocky Mountain Power Wattsmart incentives frequently reference attic R-value improvements and verified air sealing. Dominion ThermWise paths can overlap depending on fuel type and program year rules. We photograph depth markers, retain coverage notes, and align paperwork with the program definitions so you are not chasing clarifications six weeks after install.

Timeline and mess

Typical attic scopes finish in under a day for single-family homes without complex hip roofs full of micro-pitches. Hoses run through a window or porch door, floors are protected, and we vacuum trails before we leave. If your attic has active knob-and-tube wiring or buried exhaust fans, we flag it during the walkthrough and coordinate licensed trades before blowing.

When blown-in is not enough

If roof decks show chronic moisture staining, if bath fans terminate in the attic, or if intake ventilation is blocked, we fix those conditions or bring in partners before adding depth. Insulation should never trap moisture against sheathing.

Ready for numbers? Book a free estimate — we thermal-scan, quantify leakage priorities, and write a rebate-aware quote the same visit.