Cochrane · Calgary · Airdrie
Your roof needs work. Your attic is at risk.
Chinook stains, a tired roof, frost in the attic — we diagnose leak vs attic rain and fix it. Home of the 10-Year Transferable Roof Warranty.
What you need done
Two jobs homeowners call us for
You either need the roof fixed — or the attic moisture risk stopped. Often both. We handle the diagnosis so you are not paying for the wrong repair.
Roofing
Repairs and full replacements built for Calgary weather — backed by our 10-year transferable roof warranty on qualifying installs.
Attic rain & moisture
Frost on nails, damp insulation, stains after a warm spell — often attic rain, not a roof leak. Ventilation, bath-fan routing, and insulation that stop the cycle.
Blow-in insulation
Proper attic R-value keeps house heat out of the cold roof deck — warmer rooms, lower bills, less melt risk when Chinooks hit.
Why this keeps happening
Attic rain looks like a leak — until you look under the roof
If stains show up after a Chinook, or you see frost in the attic while the shingles look fine, you are not imagining it.
Warm household air rises into a cold attic all winter. Moisture freezes on the decking — layer after layer of frost in the insulation and on nails.
It is not always a roof leak. The shingles can look fine while the problem is happening under the roof. Guess wrong and you pay for the wrong fix.
A Chinook can swing 30°C in hours. That thaw turns built-up frost into sudden “rain” on insulation, drywall, and ceilings.
The permanent fix
Three steps that stop attic rain
Done together, these keep frost from forming — so you are not chasing stains every Chinook.
Ventilation
Balanced intake and exhaust keep the attic cold and dry so frost cannot build on the decking.
Bath-fan adapter
A sealed adapter routes moist bathroom air fully outside — not into the insulation where it feeds frost.
Insulation
Correct depth and R-value keep house heat out of the attic — the root trigger for melt and stains.
By Black Gate Contracting
Local team. Straight diagnosis.
Cochrane Insulation is a brand of Black Gate Contracting. Over 15 years focused on insulation, roofing, and attic-rain issues in Cochrane, Calgary, Airdrie, and surrounding areas. We tell you whether you need roofing, an attic fix, or both.
What to expect
From worry to a clear plan
You tell us what you are seeing. We help separate roof leak from attic rain, then outline the right work.
FAQ
Questions before you book
Straight answers so you know whether you need a roof, an attic fix, or both.
Is this a roof leak or attic rain?
A roof leak comes through damaged shingles or flashing. Attic rain happens under the roof when warm household air meets cold attic surfaces, then melts in a Chinook. We diagnose which you have before recommending work.
What is attic rain?
Attic rain is moisture that freezes inside your attic over winter, then melts during a warm Chinook and drips onto insulation and ceilings. It is often mistaken for a roof leak even when shingles are fine.
Who is behind Cochrane Insulation?
Cochrane Insulation is a brand of Black Gate Contracting — the same local team for insulation, roofing, and attic rain work.
What areas do you serve?
Cochrane Insulation by Black Gate Contracting serves Cochrane, Calgary, Airdrie, and surrounding Alberta communities.
What is the 10-year transferable roof warranty?
On qualifying roof installations, we provide a 10-year warranty that can transfer to a new homeowner if you sell — a strong selling point for your property.
How do I request a quote?
Use the contact form on this page. Tell us about your roof, ceiling stains, or attic moisture issue and we will reply by email within one business day.
Free estimate
Tell us what is going wrong
Roof looking tired or leaking? Stains after a Chinook? Frost or damp insulation? Send a short note — we reply within one business day.
Prefer email — we reply within one business day.
Cochrane Insulation by Black Gate Contracting. Serving Cochrane, Calgary, Airdrie, and surrounding areas. No pushy follow-ups. Photos help.