Blown-In Attic Insulation in Port Charlotte, FL

Blown-in attic insulation in Port Charlotte is often the best value in the whole house. A machine blows loose fiberglass or cellulose through a hose onto the attic floor, where it settles into an even layer that fills around trusses, wiring and the low corners near the eaves. In a vented attic with sound ductwork, it can bring the ceiling to code-level R-values for far less than spray foam. It works best on top of a sealed ceiling, since loose fill slows heat but does not stop air.

How deep to go

The Insulation Institute's summary of Florida's 2023 energy code lists R-38 for ceilings in Climate Zone 2. ENERGY STAR recommends R-49 for an uninsulated Zone 2 attic, or adding R-38 where 3 to 4 inches are already down. Many attics in Charlotte County's 1970s and 1980s homes hold a few inches of compressed fiberglass, far short of either target. We set depth markers across the attic before blowing, so you can confirm the depth was reached.

Fiberglass or cellulose

Blown fiberglass is light, does not absorb water and settles little. Fixr lists it at $1.65 to $2.60 per square foot. Cellulose, made mostly from recycled paper treated for fire and pests, is denser and slows air movement a bit better. Fixr lists it at $1.75 to $3.80 per square foot. In Florida attics, where roof leaks and humidity are concerns, fiberglass is a common pick, but either can do the job.

Seal the ceiling first

Before any loose fill goes in, we seal the gaps that let hot attic air into the house: the attic hatch or pull-down stairs, can lights, bath fans, plumbing and wiring holes, the tops of interior walls, and soffits over kitchen cabinets. We also look at the air handler platform and return, which are often the leakiest parts of the whole attic. Skipping this step is the most common reason a blown-in job disappoints.

Ventilation stays open

A vented attic still needs air to move from the soffits up and out. We install baffles at the eaves so the insulation does not block the soffit vents, and we keep loose fill clear of fixtures and flues that need clearance. If bath fans vent into the attic, we point that out, since that humid air should go outside.

FPL rebate

FPL lists a ceiling insulation rebate for homes whose existing ceiling insulation is below R-8, with the work done by an FPL participating contractor. Check FPL's current terms and whether your home qualifies before the job.

Over old insulation or after removal

If what is up there now is dry and clean, new loose fill can go right on top. If it was soaked by a roof leak, crushed by storm repairs, or soiled by rodents, it should come out first. HomeGuide lists old insulation removal at $1 to $2 per square foot.

Tell us roughly how old the house is and what you have seen in the attic, and we will measure and send a written quote. Get a free estimate