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30 Cowansview Road, Cambridge, ON N1R 7N3

Phone: (Cambridge): 519‑623-4455

Phone: (Brantford): 226-802-2134


A Before (Bottom) And After (Top) Re-Roof Graphic

Managing Roofing Problems & Re-Roofs in Cambridge

A sturdy roof protects your home or business from the elements. It has to withstand strong winds, heavy downpours, snow and ice accumulation. Whether it’s a repair or installation, your roof needs to be properly maintained to protect your investment. Residential and commercial roofs can suffer from multiple roofing problems. Keep these worries aside and rely on Grand Valley Roofing & Coatings Inc. for all your roofing repair services in and around Cambridge. We provide complete roofing repair solutions for residential and commercial properties.

Does Your Roof Need Repair or Replacement?


We also help you decide whether you need a complete roof replacement or just roofing repair solutions depending on the current condition of the roof. If the roof damage is minimal and fixing leaks and replacing cracked shingles or damaged membrane will suffice, we can repair the roof. However, if the damage is significant, we may suggest replacing it completely.


Water leaks can damage the roof decking. Further problems indicating a repair or re-roofing may be necessary which could include one or more of the following:


  • The failure to fix minor problems

  • Water pooling on the roof

  • Failure of roof perimeters e.g., gravel stops

  • Poor design choices

  • Weathering and wind damage

  • Lack of roof maintenance

  • Shingles that show granule loss, are missing, or have curls and/or cracks

  • Water damage

  • Flashing and drain problem




Roof maintenance is often forgotten or ignored until a leak appears or the owner's insurance company recommends action. Some homeowners believe that to shingle a roof, all you need to do is buy some shingles and nail them on the roof. A great deal has changed in the shingling industry. Old shingles have to be removed (and disposed of), any rotten roof sheathing replaced, and ice and water shield, felt and flashing installed. At the same time, the peaks and valleys need to be completed and proper ventilation techniques applied. Replacing flat roofs are even more complex.

Failure to Correct Minor Problems

Failure to Correct Minor Problems

The biggest cause of premature roof failure is the inability to locate and correct minor problems; the lower the roof slope, the greater the impact. Insufficient ventilation can markedly decrease the life of the roof. Also, ventilation will not solve the problem of water leaking into the attic or building.

Missing and Deteriorating Shingles

deteriorating shingles

These shingles show the effects of weathering and sun damage. A new roof prevents water damage and adds value to your home. Finding tiny granules in your eavestrough? These granules provide weatherproofing and protection from ultraviolet rays. Missing shingles are also a sign of roof trouble. Curling and cracking shingles signal a loss of wateeer resistance.

Failure in Gravel Stops

Failure in Gravel Stops

The heat on the roof expands and contracts the metal and before long they develop cracks and come away from the base material where leaking develops. While easy to repair, they are often overlooked. Yearly inspections can spot this problem.

Poor Design Choices

Poor Design Choices

This slope to flat roof transition will fail prematurely due to expansion and contraction of the material at the change in deck direction, causing membrane splits. In addition, incompatible roof materials, poor drainage, sagging structure and roof-on-roof designs can all contribute to premature roof failure.

Weathering & Wind Damage

Weathering and Wind Damage

The type of roofing material dictates the life of the product you have; the less organic the material, the longer the life. Damage to roofs can be caused by hail, air pollution and a salt-laden atmosphere. The greatest factor in prolonging a roof's life is adequate fastening of the roofing material to the deck and at the perimeter. High winds tend to loosen the roofing materials and no roof can withstand extreme winds and flying debris.

Water Damage & Pooling

Water pooling

Out of sight, out of mind: Often the first indicator of a roof issue is water damage. This is particularly true for flat roofs, where it is easy to forget to check drains, to clean off plant residue and garbage from roof when it is not easily seen.


Water collecting on roof can magnify UV rays and decrease the life of the roof, particularly for BUR and bituminous roofs. Root-top units without proper drainage can compound the problem.

Flashing & Drain Problems

water collected on the roof

The function of flashing is to provide a watertight connection between the roof and projections. Many early roof leaks are the result of flashing problems and prompt repair will extend the roof's life. The drains provide for the removal of water as quickly as possible and should be inspected for blockages frequently.

Tufdek Vinyl Decks

Vinyl decks

Grand Valley Roofing is one of a few companies in Southwest Ontario with certification in installing Tufdek Waterproof Vinyl Decking. Tufdek is designed to be installed on most outdoor locations, including balconies, decks, sundecks, roof-top patios, stairs, walkways and concrete. Available in various looks and colours, it is an outstanding alternative to traditional materials.

A Look at a Few Re-Roof Projects

Built-Up Roofing


Modified Bitumen

Receive a Free Estimate

Get in touch with our roofers for roofing repair services in and around Cambridge to learn more about our inspection services. You can contact us to schedule an appointment for inspection, maintenance and repair.

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