Attic Rain Specialists in Calgary
Moisture in your attic is more than just a nuisance—it’s a warning sign. At Comfort Pro Insulators, we specialize in identifying and fixing attic rain issues in Calgary homes. Our experienced crew delivers expert solutions to stop moisture buildup, prevent mold, and protect your home from long-term damage caused by attic rain.
If you’ve noticed water droplets forming on attic nails or dark stains on the underside of your roof deck, you’re likely experiencing attic rain—a problem made worse by Calgary’s cold winters and fluctuating humidity levels.
Why Attic Rain Happens in Calgary Homes
Attic rain occurs when warm, moist air from inside your home rises and condenses on cold attic surfaces during winter. When temperatures rise, that condensation turns to water and “rains” down inside your attic, causing wet insulation, mold, and even structural rot.
Common causes include:
- Inadequate attic ventilation
- Poor or missing insulation
- Air leakage from the living space
- High indoor humidity
- Improper bathroom/kitchen venting
In Calgary’s climate, these issues are more likely to appear due to extreme winter temperatures and dry-to-wet seasonal transitions.
Signs You Might Have Attic Rain
Many homeowners aren’t aware of attic rain until serious damage occurs. Watch for these warning signs:
- Water stains or mold patches on attic wood
- Frost buildup on attic nails or rafters
- Damp or compressed insulation
- Musty odors in the upper floors
- Ice damming along roof edges
- Dripping sounds inside the attic during warmer winter days
If any of these sound familiar, call our attic rain specialists in Calgary for a free inspection.
Attic Rain Services We Offer
We provide complete attic rain prevention and repair services designed for Calgary’s unique conditions:

Attic Moisture Inspections
We evaluate your insulation, ventilation, and air sealing to pinpoint the source of attic rain and recommend the right fix.

Attic Rain Repairs & Retrofits
From removing moldy insulation to sealing air leaks and installing vapor barriers, we restore your attic’s health and prevent future moisture damage.

Ventilation & Airflow Improvements
We install or upgrade attic ventilation systems—including roof vents to keep attic temperatures and humidity in check.

Attic Insulation Upgrades
We install high-density, eco-friendly cellulose loosefill insulation to regulate attic temperatures and reduce condensation risk.
Serving Calgary Homes, Shops & Custom Builds
We’ve helped fix attic rain in all types of properties across Calgary, from aging bungalows in Bowness to new builds in Mahogany. Our attic rain services are ideal for:
- Single-family homes
- Rural and acreage homes
- Custom and net-zero houses
- Shops, garages, and agricultural buildings
Why Calgary Homeowners Trust Comfort Pro
With over 50 years of combined experience and a commitment to eco-friendly insulation, we’ve become a go-to name for attic rain solutions in Calgary and surrounding areas.
Here’s what sets us apart:
- Attic rain specialists with deep knowledge of Calgary’s climate
- Certified installers of high-density cellulose insulation
- Full service: inspection, repair, insulation, and ventilation
- Free inspections and clear, honest recommendations
- 10-year workmanship warranty
- Trusted across Alberta, BC, and Saskatchewan
Working With Builders, Renovators & Homeowners
Whether you’re a homeowner, homebuilder, or renovation contractor, we provide attic moisture control solutions that meet building code and exceed expectations. From standard retrofits to passive home designs, our team delivers long-lasting results backed by science and expertise.
Book a Free Attic Rain Inspection in Calgary
Don’t wait for mold or structural damage to reveal a hidden problem. Call Comfort Pro Insulators at 825-945-2525 to schedule your free attic moisture inspection. Our team will diagnose the issue and provide a clear, customized plan to stop attic rain—for good.
Business Hours: Monday–Friday, 7am–3pm
Frequently Asked Questions
What is attic rain and why is it common in Calgary?
Attic rain happens when warm, moist indoor air condenses on cold attic surfaces. In Calgary, extreme winter temps and insulation gaps make this more likely.
Can attic rain cause mold?
Yes. The excess moisture promotes mold growth on wood, insulation, and drywall, which can affect indoor air quality and cause damage.
How do I know if I have attic rain or just a roof leak?
Roof leaks tend to be localized and happen during rain. Attic rain typically occurs during winter thaws and affects larger areas. Our inspections will confirm the source.
Will more insulation help?
Yes, but only if paired with proper ventilation and air sealing. We offer full attic solutions to ensure balanced moisture control.
Is this covered by insurance?
Sometimes, especially if mold or water damage is significant. We can provide inspection reports to assist with claims.