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Learning Centre

The Flatroofers Learning Centre combines information from our many years in business
and is aimed at helping you make informed decisions when it comes to caring for your roof

Roofing Installation Methods

The wrong installation method can cost you dearly. Let Flat Roofers Commercial Roofing help you choose the right solution for your needs.

roofing installation methodsYour existing roofing system will determine the installation method you require, since not all methods apply to all roofing systems. For instance, mechanical attachment does not apply to spray polyurethane foam roofing systems.

Common roofing installation methods include:

Mechanical Attachment - This method applies to systems which use substrate board, a taper system, insulation and coverboard, all of which must be attached to the roof substrate using screws or nails.

Fully-Adhered Roofing - A glued roofing system involves gluing the cover board, insulation and other components to the roofing membrane. However, the membrane must not be glued directly to the substrate; instead, it is glued to the next component below, which is often the insulation or cover board. Sometimes, the cover board and insulation is mechanically fastened to the substrate before the top layer of roofing membrane is glued to the top of the cover board or insulation facer. Unfortunately, this method often cancels out any benefits that come from a total, fully adhered system.

Ballasted - A ballasted system is usually held in place by stones, rocks or another type of weight. It often involves square concrete pavers placed a few inches apart, or side-by-side.

Roll-Applied - A liquid-applied membrane is often used in restoration systems, whereby the roofing material is rolled in place using paint rollers or squeegees.

Spray Application Roofing - This method applies to spray polyurethane foam (SPF) or restoration systems. The roofing material is sprayed onto the roof, much like a power washer that sprays water. However, spray application uses less pressure and instead of water, it sprays roofing material.

To find out more about which roofing installation method is best for your needs, speak to Flat Roofers Commercial Roofing today.


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We can service any style of commercial flat roof. We will help you determine if your roof needs to be repaired, maintained, replaced or retrofitted - with the most cost effective solution.

The Words Best Roof - Duro Last

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Contact us for a Free Rooftop Inspection

For a comprehensive free rooftop inspection, analysis and follow-up report call us at 1-800-307-3719 or send us an email at: info@flatroofers.ca

Our Testimonials

  • "Doug, I just wanted to say "THANK YOU" to you and your team. Working with Flat Roofers has been incredible! Working with a team that can walk me through the free rooftop inspection process was invaluable!."

    Paul Carns Property Manager

  • "It was great working with the Flat Roofers team. As new rooftop contractors, they led us through the process beautifully and were there to give us their advice and input whenever we asked."

    John Huff Landloard

  • "Doug: Hope you are having a great day! Mahar, Tim & crew have done a great job with rehabbing my Toronto commercial property. Tim is very good with keeping me updated on progress. All is appreciated."

    Dan O'Neil Property Manager Lead

Flat Roofers Inc

We are able to repair, maintain or retrofit any existing flat roof and can help you save you time and money by not tearing off the existing roof. Best of all, we add tremendous value in that we are efficient and our flat roofing products are Green since you are disposing less. Where overheating is an issue since Tar and Gravel holds heat, our featured application diflects heat. Our value to you as a customer is we don’t tear off the old roof and we can repair, re-roof or retrofit your current roof which is a major cost savings in the long-run. For a comprehensive free rooftop inspection, analysis and follow-up report call us at 1-800-307-3719 or send us an email at: info@flatroofers.ca


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