Parker Johnston

Low Slope Roofing

From schools to stadiums, our commercial roofing team members are experts in roofing systems for large-scale commercial buildings. Correct installation is imperative, and we’ve got your business covered.

Parker Johnston - UVIC - cementitious panels - low slope roofing - sun shades - louvres

The right roofing

If your roof system leaks, everything else in your building is in jeopardy. Having a contractor who can work with you to select the best roofing option for your project and ensure it is installed correctly, safely and on schedule puts your mind at ease. Having a qualified contractor is critical to ensure warranties aren’t compromised.

Single Ply Membrane 
(TPO/PVC)

Single-ply roof systems represent a cost-effective means of covering a large roof area in a short period of time. Options such as thickness, density, surfaces for recreational/patio areas, and access points to rooftop cooling and heating units can be tailored for each project. We are manufacturer-trained in heat welding, rubber application (EPDM), and solvent application of single-ply roofing systems. Parker Johnston offers warrantable systems from all major manufacturers.
Parker Johnston - Scotiabank Saddledome - single-ply-roofing - ranged

SBS Roof Systems

A 2-ply SBS roof system, also known as torch-on, is the most popular commercial roofing option, due to its durability, water protection, and relatively fast installation process.

It does, however, require a qualified, skilled, specifically-insured installer to ensure proper installation.
Parker Johnston - Semiahmoo High School - Metal Roofing - Low Slope Roofing - SBS
Parker Johnston - Victoria General Hospital Emergency - Low Slope Roofing - 2 ply SBS
Parker Johnston - Victoria General Hospital Emergency - Low Slope Roofing - 2 ply SBS (close)

Waterproofing

Unique environmental conditions exist when waterproofing building elements like parking garages, plaza decks, pedestrian walkways or even mausoleums. Water damage can occur in a multitude of ways, which means using an experienced and qualified company for both design consultation and installation of the correct products is imperative. We work with you to determine the particular needs of your project and the best products or options.

Specialty Roofing Products

This is where the latest and greatest in roofing technology makes an appearance. products like polymer shakes and heavy-weight laminate shingles, items with excellent performance characteristics. The key is ensuring you are getting the right product for your specific application. This is also where we can stop you from making a poor choice in roofing material: if we haven’t heard of it, chances are you don’t want it.
Parker Johnston - Uptown - specialty roofing gravel top
Parker Johnston - Agate Lane - Specialty roofing
Parker Johnston -specialty roofing -Uptown Shopping Centre Victoria
View our latest roofing projects
Surrey, BC

Semiahmoo Secondary School

Victoria, BC

Victoria General Hospital – Emergency

Regina, SK

Mosaic Stadium

Saanich, BC

Uptown Shopping Centre

Get the best for your project right now.

Book a free estimate today.

© 2025 Parker Johnston Industries Ltd. All Rights Reserved. Privacy Policy. Powered by Loomo.