If your roof got through June and July without an obvious drip, it still needs a proper look before the end of September.
Edmonton has just come through the wettest summer in its recorded history, and weeks of saturation damage a roof in a slower and quieter way than a single violent storm does.
Tournament Week at Royal Mayfair, in the Middle of a Record Soaker
The CPKC Women's Open is being played at the Royal Mayfair Golf Club from August 19 to 23, the third time Canada's national women's championship has come to that Edmonton course.
The grounds crew spent the run up to the event doing the same thing homeowners should be doing right now, which is managing water that will not stop arriving.
Environment and Climate Change Canada data reported by Global News shows that roughly 580 millimetres of rain fell on Edmonton in June and July alone. The previous full summer record, set in 1953, was 417 millimetres across all of June, July and August.
June broke a mark that had stood for 112 years. Storms hit on 15 days in June and 19 days in July.
Rain Damage Does Not Announce Itself the Way Hail Does
Hail leaves bruises and stripped granules you can photograph the same afternoon. Prolonged rain does something less visible, which is find every small weakness and work at it over and over.
An asphalt roof is built to shed water fast, not to sit wet for weeks at a time. When drying time disappears, details that were merely tired start to fail.
That distinction matters for your insurance file too. A sudden hail event is usually a claim, while slow water entry through worn flashing is usually treated as maintenance, and our page on storm and hail damage assessment explains how adjusters separate the two.
Where Water Gets In During a Long Wet Stretch
Flashing and penetrations
Chimneys, plumbing stacks, furnace vents and skylights are the usual entry points. Sealant that would have survived a normal Edmonton summer becomes an active leak after two months of repeated soaking.
Valleys and low slope sections
Valleys carry the most volume on any roof, so they show wear first. Add a garage addition or a low slope porch and you have a spot where water slows down and starts looking for a seam.
Lifted tabs and exposed nails
Wind from those same storms lifts shingle tabs, and any exposed fastener lets water track straight down into the deck. Caught early this is routine roof repair work, and left alone it becomes a sheathing replacement.
Your Eavestroughs Carried the Heaviest Load
Nearly 580 millimetres of rain over two months moves an enormous volume of water through a system most homeowners never actually look at.
Overflowing troughs dump that water against the fascia and down the wall instead of away from the foundation. If you saw a curtain of water pouring over the front edge during a July storm, the cause is normally a clog, a sagging hanger or an undersized downspout.
Check the fascia and soffit now for staining, soft spots or peeling paint, because those are the first signs water has been landing in the wrong place. Fixing eavestroughs, soffit and fascia costs a fraction of rebuilding a rotted roof edge.
Check the Attic, Not Just the Ceiling
Most roof water problems show up in the attic long before they stain any drywall. Take a flashlight up there on a dry day and study the underside of the sheathing.
Dark streaks around nails, rusted fastener tips, matted insulation and a musty smell all point to moisture that has been sitting for a while. Frost you noticed last winter and staining you notice today often share one cause, which is poor ventilation.
A Practical Post Rain Check
| Area | Look for | Why it matters |
|---|---|---|
| Attic sheathing | Dark streaks, rusted nail tips, musty smell | Confirms water entry before ceilings stain |
| Flashing | Cracked sealant, lifted metal at vents | The most common leak point in sustained rain |
| Valleys | Debris buildup, worn granules | Carries the highest water volume |
| Eavestroughs | Sagging, overflow marks, loose spikes | Overflow rots fascia and floods foundations |
| Shingles | Lifted tabs, exposed nails, bare patches | Driving rain gets under anything loose |
| Ceilings | Faint rings, bubbling paint | A late stage sign that needs quick action |
Can You Reroof After a Summer Like This?
Yes, and late August into October is normally the best stretch of the Edmonton calendar for it. Crews tear off only what they can dry in and finish the same day, so a wet forecast changes the staging rather than cancelling the job.
The real variable is what the tear off reveals underneath. Decks that never fully dried this summer sometimes need sheathing replaced, which is worth budgeting for before you commit to new asphalt shingles.
Do Not Carry a Wet Deck Into Freeze Up
Edmonton typically sees its first hard freeze in October. Any moisture trapped in sheathing or insulation stops drying at that point and begins a freeze and thaw cycle that widens every gap the rain found in August.
If you have an active leak today it should not wait for a scheduled visit, and emergency roof repair exists for exactly that situation. For everything else, book an inspection while the weather still allows a proper look at the deck.
We work throughout Edmonton, Ellerslie, Leduc, Sherwood Park and St. Albert. Get in touch for a quote or call (587) 402-4535 and we will tell you plainly whether you need work now or a note in the calendar for spring.