Step 1 — Removal verification
Nothing is sealed and nothing is replaced until every animal is confirmed out. With raccoons that means accounting for mothers and kits; with bats it means confirming the colony has fully exited via one-way valves; with squirrels it means letting the second-litter timing play out. Skipping this step is the single most common amateur mistake in attic work — and it always leaves a dead animal in the wall.
Step 2 — Permanent entry sealing
Every confirmed entry point gets the right material for the species and the building location. Hardware cloth (1/4" or 1/2") for squirrels and rodents. Heavy-gauge metal flashing for raccoon-damaged soffits and ridge transitions. Copper mesh and elastomeric sealant for bat gaps. Matched replacement for any chewed or torn finished trim. Foam alone is never the answer — wildlife chews through it in weeks.
Step 3 — Contamination removal
Droppings, latrines, nesting material, and contaminated insulation come out under appropriate PPE. The risks vary by species:
- Raccoons: Baylisascaris procyonis (raccoon roundworm) is the high-risk pathogen. Ova are extremely persistent and require treatment, not just removal.
- Bats: Histoplasma capsulatum spores in old guano are the primary respiratory risk. We use HEPA-equipped removal and sealed disposal.
- Squirrels & rats: Generally lower disease risk but heavy material volume — nesting material, chewed sheathing fragments, and stored food caches.
Step 4 — Decontamination
After bulk removal, exposed framing, sheathing, ductwork, and HVAC adjacencies are treated with an appropriate anti-microbial. The product and dwell time depend on the species and contamination volume; raccoon latrines get a different protocol than bat guano.
Step 5 — Insulation replacement
Removed insulation is replaced to the original R-value (most North Alabama attics run R-30 to R-49 in current code). Blown-in fiberglass or cellulose is standard. Where bat occupation was present, we install vapor and guano barriers as recommended by NWCOA standards.
Step 6 — Documentation
You get photos of every entry point sealed, a written scope describing what was found and what was done, a material list, and a warranty. If you're filing a homeowner's insurance claim — which often covers wildlife damage to insulation, wiring, and finished surfaces — we provide the documentation the carrier will ask for.
Does insurance cover wildlife damage?
Often — but the exact answer depends on the policy. Most policies cover sudden, accidental damage caused by wildlife (chewed wiring, torn soffits, contaminated insulation) but explicitly exclude routine pest issues. The species matters too: raccoon and bat damage tends to be covered; rodent damage often isn't. We can't promise your carrier will pay, but we provide the kind of documentation that puts a claim on solid footing.
How long does an attic restoration take?
A typical North Alabama attic restoration runs one to three days of on-site work depending on volume of contamination, scope of insulation replacement, and complexity of entry repairs. Decontamination dwell times can add a day. We schedule everything sequentially — you don't get a partial reseal followed by months of waiting.