Attic decontamination: rodents, droppings, mould
Removal of contaminated insulation, air sanitizing and re-insulation — for a healthy attic.
When does an attic need decontamination?
Over the years, an attic can become a contaminated space that harms the air quality of the whole home. Decontamination means removing the soiled insulation, sanitizing the space, then re-insulating with new, high-performance material.
The warning signs
- Rodent or bird droppings in the insulation.
- Persistent odours (urine, mould, dead animal) seeping into the home.
- Mould stains on the underside of the roof or the insulation.
- Settled, damp or blackened insulation from past leaks.
- Unexplained allergies or breathing issues for the occupants.
Why it matters for your health
A contaminated attic contaminates the air you breathe. Rodent droppings, mould spores and particles from old degraded insulation circulate through the home via gaps in the ceiling. Decontaminating protects your family's health and restores effective insulation.
A real project, in pictures
Here is an attic we decontaminated. The mould and soiled insulation were removed, the surfaces sanitized, then the space re-insulated with new material.



Our procedure
- Assessment of the attic's condition and the source of contamination.
- Full removal of the soiled insulation by vacuum extraction.
- Sanitizing and treatment of the surfaces.
- Sealing entry points to keep pests from returning.
- Re-insulation with new material up to R-50 / R-60.
A compliant, certified company
We operate in compliance with RBQ, CNESST and IQAQ (Quebec Institute of Air Quality) standards. Work guaranteed for life, price confirmed before the work begins.
How much does it cost? Unlike most of the market, we publish our ranges: see our decontamination, vermiculite and asbestos-test price guide. And once the attic is clean, it's the perfect time to re-insulate to R-50 in the same job — the LogisVert grant ($1,500) may apply.
Areas we serve
- Québec
- Lévis
- Montréal
- Laval
- Longueuil
- Trois-Rivières
- Sherbrooke
- Gatineau
- Saguenay
- Drummondville
- Saint-Jérôme
- Terrebonne
- Repentigny
- Brossard
- Saint-Hyacinthe
- Granby
- Blainville
- Mirabel
- Mascouche
- Victoriaville
- Rimouski
- Saint-Jean-sur-Richelieu
- Châteauguay
- Boucherville
- Shawinigan
- Joliette
- Magog
