The Roof Replacement Process

Replacing the roof on your home is a major project, but at Tony William we make the entire process as smooth as possible for you. For many homes we can completely replace your roof in less than a week. Here are all the steps you can expect on your Calgary roof replacement with Tony William Roofing & Exteriors.

Remove the Old Roofing Materials

At Tony William, we always remove the old roofing materials. That is the only way to accurately inspect the roof sheathing and structure for damage. Some roofing companies cut corners by putting new shingles on top of the old shingles. It might save you a few dollars in the short run, but you won’t know if there are any mould issues or other structural damage that could lead to more substantial problems in the future. Don’t take chances. Make sure the old roofing materials are completely removed.

Roof Sheathing Inspection

After your roofing shingles have been removed, it is important to closely inspect the roof sheathing, or panels of wood that cover the framing of your roof and form the base to attach new roofing materials. If there are any signs of leakage, water damage, waving of the wood, etc. the problem areas will have to be replaced. A great roof starts with a solid foundation of sheathing.

Ice Barriers

In a climate like Calgary's, it is critical to install an ice and water barrier all around your roof's edges. Ice barriers are a type of waterproof roofing underlayment that protects from water leakage, particularly from the formation of ice dams in the winter.

Installing the Drip Edge

A metal drip edge is installed on top of the underlayment to help ensure that wind blown rain that gets under your shingles flows over the underlayment, protecting the sheathing.

Roofing Underlayment

Roofing underlayment is an asphalt felt (tar paper) or synthetic barrier that offers an additional layer of protection against water leakage. The underlayment keeps the roof sheathing dry before the roofing materials are applied and helps protect against wind driven rain that can get under your shingles.



With the exception of commercial and flat roof projects, we are currently quoting residential projects to commence in 2021. Thank you for your understanding. 

Tony William Roofing & Exteriors Inc.
 Suite 300 - 160 Quarry Park Blvd SE 
Calgary, AB T2C 3G3 Open M - F | 8:00am - 4:00pm 

Installing the Roofing Materials

Different roofing materials have different installation processes. The three main types are asphalt shinglesmetal roofing and rubber roofing.

Asphalt Shingles Installation

Asphalt shingles are nailed on the roof starting at the roof edges and moving upward. Top shingle brands have a large nailing area that makes it easy to correctly attach the shingles to your roof. Each new row of shingles overlaps the lower layer and is staggered to provide effective protection against water leakage.

Metal Roofing Installation

A correctly installed metal roof is the most durable and will often outlive your home. There are two main types of metal roofing. There are metal sheets that get fastened to your roof using neoprene washers to prevent water leakage. The sheets are cut in longer lengths to minimize overlap.

The other type of metal roof incorporates interlocking panels that connect together. These types of metal roofing shingles come in textured finishes that simulate slate, wood and other roofing materials.

Rubber Roofing Installation

Euroshield rubber roofing is installed in a similar process to asphalt shingles. The heavy and durable, rubber shingle sections are nailed to the roof in an overlapping pattern just like with asphalt.

Post Roofing Clean Up

At Tony William Roofing & Exteriors, we take great pride in the service we offer on all of our exterior renovation projects. Not only do you get a high quality durable roof, but you also deserve a clean worksite free of debris, nails and other left over garbage. We take the time to clean around your home at the end of every workday and do an extra thorough clean after the roofing installation is completed.

Post Roofing Follow Up

After we are finished with your roof, we want to make sure that you are completely satisfied with all the work. All our roof replacements come backed by the Tony William 10-Year Installation Warranty. If you have any issues with your roof, please call us and we’ll make it right.

Check out our Calgary Roofing Guide for much more information on replacing your roof.


  • Company was recommended by a neighbor. I had estimates by two companies.Tony Williams was well under Gutter Doctor. Work was completed when promised. Crew was friendly and efficient. I would certainly recommend this company.

    David Ritch

    Google Review

  • We were very impressed with the service and workmanship Tony Williams Roofing & Exteriors provided us this past spring. We will be contacting them for any further renovation project we may have in the future.

    Rick in Calgary

  • This company came in as the best value for our money, they were on time, professional and answered any questions we had. The workers were great, cleaned up after and were done on time. Was very happy with this company!

    Kara & Brad

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Tony William Roofing & Exteriors Inc.
Suite 300 - 160 Quarry Park Blvd SE,
Calgary, AB T2C 3G3

(403) 454-1366

Calgary | Airdrie | Langdon | Okotoks

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