Search ROOFNOW Roofing Pages

STOP RE-ROOFING. ROOF SMART. ROOF ONCE. METAL ROOFING EXPERTS

ROOFNOW™ KNOWLEDGE SERIES

Ontario Roofing Case Studies

Explore homeowner roofing experiences from across Ontario. These case studies examine wind and hail damage, recurring leaks, ice dams, attic moisture, premature asphalt failure and the decision to upgrade to metal roofing.

Roofing decisions become easier when you understand what went wrong

Roof problems rarely begin with one obvious warning. Wind-lifted shingles, recurring spring leaks, hidden deck rot and attic condensation can develop over several seasons before the full damage is discovered.

This library brings together practical Ontario examples so you can recognize warning signs, prepare better questions and understand why some homeowners ultimately choose a longer-lasting metal roofing system.

Explore all 30 roofing case studies

Filter by topic or search by city, roof problem or homeowner concern.

30 case studies shown

01Niagara Falls

Premature asphalt shingle curling and roof aging

What early curling can reveal about material aging and the remaining service life of an asphalt roof.

Read Case Study →
02Cornwall

Insurance pressure to replace an aging asphalt roof

How roof age and condition can become part of a homeowner’s insurance and replacement decision.

Read Case Study →
03North Bay

Hidden attic condensation and mold discovered

A look at moisture symptoms that may remain out of sight until an attic inspection is completed.

Read Case Study →
04Barrie

Roof shingles lost after multiple windstorms

Repeated storm damage raised questions about continuing repairs versus choosing a more durable system.

Read Case Study →
05Sudbury

Severe ice-dam damage and winter ceiling leaks

Recurring ice dams demonstrate how snow, heat loss and water entry can combine during Ontario winters.

Read Case Study →
06Kingston

Repeated asphalt roof repairs every few years

Ongoing repair costs led this homeowner to reconsider the value of another temporary roofing solution.

Read Case Study →
07Ottawa

Annual winter roof leaks returned every spring

A recurring seasonal leak shows why the visible drip is not always the true source of a roof problem.

Read Case Study →
08Toronto

Attic inspection revealed hidden roof-deck rot

Why inspecting beneath the roofing surface can materially change the scope of a replacement project.

Read Case Study →
09Toronto

Condensation and mold found inside the attic

This case explores the relationship between attic moisture, ventilation and roof-system performance.

Read Case Study →
10Toronto

Ice-dam leaks destroyed attic insulation

Repeated winter water entry caused damage beyond the roof covering and affected the insulation below.

Read Case Study →
11Brampton

Basement and roof leaks happened together

Two water problems at the same time prompted a broader assessment of the home’s exterior protection.

Read Case Study →
12Mississauga

Multiple neighbours experienced roof leaks

Neighbourhood roof failures encouraged one homeowner to assess risk before serious interior damage appeared.

Read Case Study →
13Vaughan

Neighbourhood windstorm roof damage

Widespread storm damage provided a clear reminder that wind resistance depends on the complete roof system.

Read Case Study →
14Kenora

Cabin leak destroyed an interior ceiling

A remote-property leak illustrates why delayed discovery can substantially increase the extent of damage.

Read Case Study →
15Thunder Bay

Roof replacement after an insurance claim denial

How coverage expectations and actual roof condition can produce an unexpected financial decision.

Read Case Study →
16Sault Ste. Marie

Repeated power-outage storm damage

Severe weather and recurring disruptions led this homeowner to prioritize long-term exterior resilience.