Roof Repair in Thunder Bay
Reliable roof repairs for Thunder Bay homes: ice-dam leaks, wind-lifted shingles, failed flashing, and storm damage. We fix the cause, not just patch the spot.
Roof Repairs That Fix the Cause
A roof repair in Thunder Bay is only worth doing if it actually solves the problem. Too many quick patches treat the symptom, the wet spot on the ceiling, without finding why water is getting in. In our climate the cause is usually an ice dam, wind damage, or failed flashing, and each needs a different fix. We trace the leak to its real source, repair it properly, and where it makes sense address the underlying issue so it does not come straight back.
Sleeping Giant Roofing handles repairs across Thunder Bay and the surrounding area. Call (807) 501-9192 and we will get out to assess it.
The Repairs We Do Most
Ice-Dam Leaks
This is the signature Thunder Bay roof problem. Heat escaping into the attic melts snow on the upper roof, the water runs to the cold eave and refreezes into a ridge of ice, and meltwater backs up under the shingles and into the home. We find and seal the entry point, replace soaked underlayment and any damaged decking, and add ice-and-water membrane. Crucially, we look at the attic ventilation, because that is what causes the dam, and a repair that ignores it just sets up next winter’s leak. Our ice dam guide explains the full picture.
Wind Damage
The cold wind off Lake Superior lifts and tears shingles, especially at the edges, ridge, and on exposed lots. We replace damaged shingles, re-secure lifted ones, and check the surrounding area for the hidden damage that often comes with it.
Flashing Failures
Flashing around chimneys, vents, skylights, and in valleys is where a lot of leaks start, and freeze-thaw is hard on it. We re-flash and re-seal these trouble spots with proper detailing rather than a smear of caulk that lets go by spring.
Storm and Snow-Load Damage
After a storm or a heavy snow event we repair the damage and check the structure. For urgent situations, see our emergency roof repair service.
Repair or Replace?
We will give you a straight answer. A repair is the right move when the damage is contained, the roof is sound, and it has years of life left. When leaks are showing up in several places, the shingles are widely worn, or the roof is near end of life, repairs stop being economical and a roof replacement is the better value. A roof inspection tells you exactly where your roof stands.
Get Your Roof Repair Estimate
Do not let a small leak become a big one, especially heading into winter. Call (807) 501-9192 or request a free estimate online. We serve all of Thunder Bay and Northwestern Ontario.
How It Works
Free Consultation & Inspection
Give us a call or fill out our online form. We will come to your property, inspect your roof thoroughly, and discuss your options, all at no cost and no obligation.
Detailed Written Estimate
You will receive a clear, itemized quote that covers materials, labour, timeline, and warranty details. No hidden fees, no surprises, just honest pricing.
Expert Installation
Our experienced crew handles your project from start to finish with quality materials and clean, professional workmanship. We keep you updated every step of the way.
Final Walkthrough & Warranty
Once the job is done, we walk through everything with you to make sure you are completely satisfied. You get a written warranty so your investment is protected for years to come.
Frequently Asked Questions
My ceiling stained after a winter thaw. Is that an ice dam?
Very likely. A stain that appears during or after a thaw, often near an outside wall or ceiling corner, is the classic sign of an ice dam backing water up under the shingles at the eave. The water can travel some distance before it shows up inside, so the stain is not always directly under the leak. We trace it back to the actual entry point, fix it, and address the ventilation that caused the dam in the first place.
Can you repair a roof in the middle of winter?
Yes, for urgent leaks and damage we work in winter. Cold and snow make some repairs harder and a permanent fix sometimes has to wait for a workable window, but we can stop active water getting in, tarp exposed areas, and carry out repairs that conditions allow. Do not let a winter leak run. The longer water gets into the deck and attic, the bigger the eventual repair.
How do I know if I need a repair or a full replacement?
If the damage is on a single slope, the roof is otherwise sound, and it is under roughly 12 to 15 years old, a repair is usually the right call. If you are getting leaks in multiple spots, the shingles are widely worn, or the roof is near end of life, repairs become throwing good money after bad and a replacement is the better value. We give you an honest read rather than pushing the bigger job.
What are the most common roof repairs in Thunder Bay?
Ice-dam leaks at the eaves, wind-lifted and torn shingles after a blow off the lake, and failed flashing around chimneys, vents, and valleys. Freeze-thaw is hard on sealant and flashing, so flashing repair is a steady part of what we do. We also handle damaged or rotted decking found behind a leak.
Will you tell me honestly if the roof is not worth repairing?
Yes. If your roof is at end of life and a repair would only buy a season or two, we will tell you that and lay out the replacement option instead. We would rather give you a straight answer than sell you a patch that fails next winter. A roof inspection is the best way to know where your roof actually stands.