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Attic Mold Removal Services

Steri Mobile offers attic mold removal and remediation services in the greater Montreal area, specifically in the West Island. Our certified mold removal experts will be happy to answer your questions and provide you with a free estimate.

Warning Signs of Attic Mold

Leaks from the roof, insufficient ventilation, excessive moisture and humidity create the perfect breeding ground for mold to grow in your attic space. It is a problem that is easily overlooked, considering how little time we spend in our attics. If left untended, mold can deteriorate the building materials of your roof structure and cause the shingles to age prematurely.

Contact our certified team if you notice:

  • Dark or white patches on attic sheathing, trusses, or rafters
  • A strong, musty odour when you open the attic hatch
  • Insulation that looks dirty, matted, or discoloured in specific areas
  • Condensation, frost, or staining on nails, sheathing, or around vents
  • Ice dams at the roof edge in winter or recurring roof leaks

GET HELP FROM OUR EXPERTS

Most Common Causes of Attic Mold

In most homes, attic mold is caused by moisture and ventilation problems rather than a simple “cleaning” issue.

Roof and Building Envelope Issues

  • Active or past roof leaks around shingles, flashing, vents, or chimneys
  • Poorly sealed roof penetrations (plumbing stacks, cables, exhaust vents, etc.)

Ventilation Problems

  • Insufficient or blocked soffit and roof vents
  • Ridge vents or gable vents that are undersized or obstructed by insulation
  • Attic hatches that are not sealed, allowing warm indoor air to escape into the attic
Warm Air Leaks From the House

  • Bathroom or kitchen fans venting directly into the attic instead of outside
  • Recessed lights, chases, and gaps around ducts or pipes, letting moist air rise into the attic
  • Gaps and cracks in the ceiling drywall or around light fixtures

If these conditions are not corrected, mold will almost certainly return, even after a thorough remediation.

LEARN MORE ABOUT OUR MOLD REMOVAL SERVICES

Our process is far more effective and contains more steps than any other company

At Steri Mobile, not only do we kill the mold in your attic, but we also tell you WHY you have mold. If the conditions are not corrected, then the mold will absolutely return during the following heating season. As certified mold inspectors and remediators, we ensure the proper process is followed because your family deserves a safe, healthy home.

Our Attic Mold Removal Process

  1. Containment is designed to prevent the movement of mold spores from one area of the building to another.
  2. Removal of all contaminated material in 6ml double bags.
  3. Destruction of mold spores on the remaining framing and sheathing with a fogging process that also destroys the roots which can be embedded as much as 1/8” into the wood.
  4. Removal of all remaining dead mold stains with a spraying process.
  5. An application of a borate-based inhibitor to reduce the chances of any mold growth.
  6. Applying a high-level ozone shock treatment to the entire attic to ensure all mold spores in the air a killed as well as any other bacteria.

The Advantages of Our Process

We begin by isolating the attic from the rest of the house. Next, we SATURATE the trusses and sheathing with a formulated disinfectant by fogging the total attic. We begin with this step because when mold senses it is being attacked, it releases its spore into the air, this is a phenomenon called bursting or sporulation. Our product is unique among the mold-killing chemicals as it is the only liquid we know that will completely destroy a spore (mold seed). Therefore, we kill the spores before they have an opportunity to spread.

The next step in the process is the application of a stain-removing solution. We do this because (while truly only cosmetic in nature) failure to apply the stain remover will result in the perception (home inspectors) that the mold is still active.

The following step allows for the long-term success of the process.  We apply an environmentally friendly borate solution designed to penetrate the substrate a full inch (mold roots only grow 3/16’s of an inch into the wood). This treatment prevents decay and dry rot fungi. It also prevents wood-boring insects, likecarpenter ants and termites, from infesting the area.

Steri Mobile has many years of experience in attic mold remediation. You can trust our experts and our process to help you remove mold from your attic effectively once the source of your moisture problem is identified and addressed.

Before-after

How to Prevent Attic Mold From Returning?

Our goal is not only to remove mold from your attic, but to help you prevent it from coming back. Once the moisture source is identified, we often recommend:

Improve Roof Ventilation

Make sure soffit and roof vents are open, unobstructed, and properly balanced. Confirm that bathroom and kitchen fans vent outdoors, not into the attic.

Seal Warm Air Leaks

Seal gaps around light fixtures, attic hatches, pipes, and ducts. Add weatherstripping and insulation around the attic hatch.

Upgrade Insulation Where Needed

Level and top up insulation to reduce temperature differences at the roof deck. Address areas that repeatedly form ice dams or show frost in winter.

2.0-1_Attic

Maintain the Roof and Flashing

Repair damaged shingles, flashing, and vent boots promptly. Keep gutters and downspouts clear to reduce water buildup along the eaves.

Our Attic Mold Removal Service Areas

Steri Mobile is a mold removal and remediation company that proudly serves property owners in the West Island, Montreal and its surrounding areas. We also serve many cities in the Montérégie West and the North Shore and South Shore of Montreal. Contact us to find out if we serve your area.

  • Baie-D’Urfé
  • Beaconsfield
  • Dollard-des-Ormeaux
  • Hudson
  • Kirkland
  • L’Île-Bizard
  • L’Île-Perrot
  • Laval
  • Montréal
  • Notre-Dame-de-L’Île-Perrot
  • Pierrefonds
  • Pincourt
  • Pointe-Claire
  • Rigaud
  • Saint-Laurent
  • Saint-Lazare
  • Sainte-Anne-de-Bellevue
  • Sainte-Geneviève
  • Senneville
  • Terrasse-Vaudreuil
  • Vaudreuil-Dorion

Frequently Asked Questions About Attic Mold Removal

How do I know if I need attic mold removal services?
Will the mold come back after Steri Mobile removes it?
Why does Steri Mobile use ozone shock treatment for mold removal?
How long does the attic mold removal process take?
Is your mold removal process safe for my family and pets?
How can I book an attic mold removal service?
Do you provide a warranty or guarantee for your mold removal services?
How do I know if I need attic mold removal services?
If your attic has a history of roof leaks, poor ventilation, or high humidity, it’s a good idea to get a free professional inspection. Or if you’re thinking of putting your house on the market, a free inspection is a great way to get informed and get ahead of unexpected expenses that may come up during the transaction.
Will the mold come back after Steri Mobile removes it?
Our goal is to eliminate mold at its source and prevent future growth. While mold spores exist naturally in the air, proper moisture control is key to stopping mold growth. Our team not only removes the existing mold but also provides recommendations and advice on addressing the source of the problem so that it doesn’t recur.
Why does Steri Mobile use ozone shock treatment for mold removal?
Ozone shock treatment is highly effective in killing mold spores in the air and on surfaces, especially in hard-to-reach areas. It works by oxidizing mold at a molecular level, neutralizing spores and eliminating odors caused by mold and mildew. Using ozone in the final stages of the decontamination procedure ensures that we are able to remediate any spores that became airborne, before or during the process.
How long does the attic mold removal process take?
The process is a 3-step liquid treatment. The liquids must dry in between applications therefore must be applied on separate days – usually 3 consecutive days (but not necessarily). Sometimes, a fourth liquid application is required. Not to worry, this doesn’t mean extra charges for our clients. We just want to make sure the job is done well.
Is your mold removal process safe for my family and pets?
Yes, our mold removal process is safe since we control the treatment areas to prevent exposure. When working in living areas of your house, we start by sealing off the treated area with plastic and placing it under negative pressure. If ozone shock treatment is used, we advise temporary evacuation during the procedure, but your home will be safe to re-enter once the process is complete.
How can I book an attic mold removal service?
Booking an attic mold removal service with Steri Mobile is easy. You can:

  • Call us directly to speak with a specialist.
  • Fill out our online contact form for a free estimate, and we’ll reach out at your convenience.
Do you provide a warranty or guarantee for your mold removal services?
Yes, Steri Mobile offers a 2-year warranty on our mold removal services, ensuring long-term effectiveness. It is important to adhere to any “conditions of warranty” that we have discussed and are outlined on our estimate, and invoice. If mold reappears within the warranty period due to factors within our control, we will re-evaluate and provide additional remediation at no extra cost. Our commitment is to deliver lasting solutions that keep your attic mold-free.

Mold Removal Specialists You Can Count On

Mold, especially black mold, represents a serious health and structural concern in any property. Steri Mobile delivers certified mold removal and remediation services for long-lasting results. Let our team help you restore a clean, healthy environment. Reach out today!

REQUEST A FREE ESTIMATE

CALL 514-922-6366

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  • Mold Removal
  • Attic Mold Removal
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Steri Mobile
48 Rue de Saint Tropez
Kirkland, QC
H9J 2K6
Canada
(514) 922-6966
info@sterimobile.net

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