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Questions you may have about your roof


Q. Can we install new shingles over the existing shingles?

A. Yes, but the preferred method is removal. Most re-roofs (shingle replacement) should be evaluated on a case by case basis. Removal of existing materials allows for inspection of the wood underneath, and the elimination of any existing rotting materials. Installing new shingles on a roof deck when the old roofing material has been removed will guarantee optimum long-term performance.


Q. What are the differences between shingle types?

A. Basic shingle types are:

3-tab shingle

  • Cheapest shingle on the market
  • Has a single layer minimum coverage
  • Good for customers primarily concerned with price

Lifetime / Architectural shingle (50 years)

  • Often called high definition shingles
  • Minimum double layer coverage
  • High quality, thick shingle composed of two layers of material per shingle
  • High wind resistant
  • Great curb appeal
  • Ottawa Home Exteriors highly recommends these shingles

Q. Do you really provide free, no-obligation estimates?

A. Absolutely – we value each of our potential customers, and it is no inconvenience whatsoever to come have a look at your roof. We sincerely appreciate the opportunity to provide you with a complimentary estimate for the work that you might require. Our experienced estimators will come out and evaluate your situation and provide an honest assessment including what OHE would recommend.


Q. How long will it take for you to complete work on my roof?

A. For residential roofs, one or two days is the norm (of course, if your roof is very large – or if significant repairs are required – it could take a bit longer). The weather can also delay the process, but we will always ensure the roof is water tight from beginning to end.


Q. What do you do about roof flashings?

A. Flashings are used wherever something intersects the roof. These are the most important areas of your roof. Various materials can be used to protect these areas: sheet metal, ice and water shield, membranes, and sealants can be integrated at siding, chimneys, walls, down spouts, skylights, pipes and vents. If the existing flashing is in good shape they can sometimes be re-used. However, since flashing can be the most critical roof component we recommend new flashings if there is any concern about the existing and likely fading flashing.


Q. What is ice and water shield and do you install it?

A. Ice and water shield is a protective underlayment that is put on over the wood deck prior to any shingles. It is used as an extra layer of protection in areas that are most prone to leaking and ice dam problems. OHE installs ice and water shield six feet along the eaves, around chimneys, skylights and in all valleys.


Q. Do you clean-up around our home once you’ve finished?

A. OHE will rake and sweep all debris from the roof and around the house (sidewalks, driveways, etc.). Then we’ll use nail magnets to find and pick up nails on the ground. Lastly, we’ll perform a final inspection of your new roof and your grounds to assure your complete satisfaction.


Q. Do you carry workers’ compensation insurance or liability insurance?

A. OHE is fully insured for both workers’ compensation and general liability coverage. What this means to you is that you will never be responsible for any of these expenses. We will be happy to provide certificates of insurance for you.