Wet Insulation? Roof Repair Costs for Leaking Roof

Rain Getting Through? You Might Need Insulation Repair.

Water sneaking under lifted shingles does far more damage than a ceiling stain. Once melt-water drips into the attic it compresses fibreglass batts, ruins their air pockets and slices the R-value almost to zero. Heavy, soggy insulation sags off rafters and soaks the drywall below. As heat now barrels through the bare timbers snow on the roof melts unevenly then refreezes at the eaves, forcing fresh water under shingles. What began as a thumb-sized shingle gap grows into deck rot, mould and higher energy bills. We have opened Red Deer attics where drenched batts weighed twice their dry mass, adding so much load that the ceiling bowed between trusses. Replacing crushed insulation, not just patching shingles, quickly becomes the biggest line on the invoice. 

Why Insulation Replacement Beats Drying Out 

Homeowners sometimes ask if fans or dehumidifiers can salvage soaked batts. Wet fibreglass never regains its loft; it compacts to a fraction of its R-value and leaves pockets that leak heat all winter. Paper facings become mould buffets that release spores each furnace cycle. The US EPA notes that moisture-damaged insulation also traps contaminants and can worsen indoor air quality. By removing the waste we eliminate the mould food, dry the roof deck and create a clean cavity for new insulation. 

Closed-cell spray polyurethane foam is our go-to replacement. It expands to seal nail holes and hairline cracks, delivers about R-6.5 per inch and forms a built-in vapour retarder so we skip poly sheets that can tear later. Because the foam bonds to the deck it adds structural stiffness that helps shingles stand up to the next Chinook wind. 

What Your Insulation Removal & Replacement Quote Shows 

Searching for "roof repair costs for a leaking roof?" We document every charge, so you see exactly where each dollar goes. The quote lists: leak area and deck boards to replace; cubic feet of insulation removal; thickness of new foam needed to meet today’s code; and any ceiling drywall work. If budget is tight, we suggest hybrids such as three inches of foam topped with loose-fill cellulose, cutting cost while still sealing air leaks. 

We've Got Answers to " Roof Repair Costs for Leaking Roof"

Check out our attic insulation page to learn more, and learn how closed-cell foam fits other projects on our insulation services page. For a deeper look at why swapping soggy batts for closed-cell foam is worth every dollar, the EPA’s spray-foam guide shows how the material locks out moisture, stiffens roof decks and trims household energy use—all benefits Central Alberta homeowners see once their leaks are fixed and the attic is sealed. 

We serve Red Deer, Blackfalds, Sylvan Lake and Central Alberta with free roof-leak insulation replacement assessments and same-visit insulation quotes. Reach our local team through the contact form and stop the drip before the next storm lands.