What This Service Includes
Removal, sanitization, and re-insulation.
Attic restoration after a rodent infestation is a three-phase job. First, we remove all contaminated insulation and nesting material. Second, we sanitize every surface with an enzymatic solution that breaks down biological matter including urine crystals that standard cleaners miss. Third, we coordinate re-insulation to Seattle code standards, air-sealing ceiling penetrations as part of the process. Most companies only handle one or two of these phases. We coordinate all three so you are not managing multiple vendors.
- Full attic inspection with documentation of contamination extent
- Mechanical removal of contaminated batt and blown insulation
- Nesting material removal with proper containment and disposal
- Enzymatic sanitization of all framing, sheathing, and joists
- Rodent entry point sealing at roof level and soffit areas
- Coordination of re-insulation with appropriate R-value for Seattle code
- Air sealing at ceiling penetrations as part of re-insulation
Health and Safety Risks
Hantavirus
Deer mouse droppings in attics can become airborne during disturbance. Greenbelt-adjacent properties require respiratory protection and specific containment protocol.
Leptospirosis
Rat urine soaking into insulation and wood framing carries leptospira bacteria. Risk increases with any moisture event that activates the contamination.
Fire Hazard
Rodent-chewed wiring in attic spaces is a documented cause of residential fires. We document all wire damage found during cleanup for your electrician.
R-Value Loss
Contaminated insulation degrades faster and performs below rated R-value. Seattle code requires R-49 in attics for new construction. Many older homes fall far short after infestation.
Pricing and Sequence
We quote the full scope before starting any phase.
Attic restoration pricing depends on the size of the attic footprint and the depth of contamination. For a standard Seattle craftsman with a 900 to 1,200 square foot attic, insulation removal and sanitization runs $600 to $1,200. Re-insulation to current Seattle energy code is priced separately at $1,500 to $3,500 depending on material and R-value.
We quote removal, sanitization, and re-insulation as separate line items so you can see each phase clearly. If you have an active infestation that needs rat removal first, that is quoted separately and performed before restoration begins. You do not pay for restoration before the rodents are gone.
Call (206) 555-0188 to Discuss Your AtticQuestions about attic restoration.
When should I replace attic insulation after a rodent infestation?
Any insulation with visible droppings, urine staining, or nesting material should be removed. Rodent urine is not always visible but the ammonia odor is reliable. In Seattle's damp climate, contaminated insulation also loses thermal value faster than clean material. If the infestation was active for more than a few weeks, full removal and replacement is almost always the right call.
What health risks does contaminated attic insulation pose?
Droppings and urine in insulation can harbor Hantavirus, Salmonella, and Leptospira bacteria. These pathogens can become airborne during disturbance and enter the living space through ceiling gaps, recessed lighting, and HVAC returns. The risk is low if insulation is undisturbed, but any HVAC or electrical work in the attic disturbs the material.
How do you sanitize an attic after rodent removal?
After removing contaminated insulation, we apply an enzymatic sanitizer to all framing, sheathing, and surfaces. The enzyme solution breaks down biological matter including urine crystals. We allow appropriate dwell time, then air the space before re-insulation. In severe cases we do a second pass.
Will homeowner's insurance cover attic restoration?
Some policies cover rodent damage under dwelling coverage if it caused structural damage, but most exclude pest-related claims. We provide detailed documentation of the damage scope for your insurance claim.
How long does attic restoration take?
For a standard Seattle home with 1,000 to 1,500 square feet of attic, insulation removal and sanitization takes one full day. Re-insulation scheduling is typically within two to five business days. We coordinate the full scope so you are not managing multiple vendors.