Low-Slope and Flat Roofing for Residential Buildings

Sierrans has almost 20 years as a roofing contractor installing flat roofs and low-slope roofs for residential applications. Flat or low-slope roofs differ from traditional roofs with steeper slopes. Common roofing materials like shingles will not last as long on flat roofs due to the increased exposure to sunlight and water. For this reason, Sierrans uses one of several options for a flat or low-slope roofing system.


Types of Flat Roof Systems

Sierrans has experience working with a variety of flat and low-slope roofing products. One of their professionals will discuss every option with you to determine which one is the best fit for your application and budget.

Flat and low-slope roof products can be done with the following products:


Polyvinyl chloride is a durable single-ply roofing membrane which performs well in residential and commercial applications. It is reflective and resists moisture by its heat-welded seams. Flat roofs with a PVC membrane can last up to 30 years if installed correctly.


EPDM is a single-ply rubber-based membrane product which is popular for its strength and durability. Seams are sealed with adhesive, and with proper maintenance can last up to 20 years.

Standard Rib System

A vinyl rib roofing system is made up of a single-ply membrane with vinyl ribs which are heat-welded to the installed membrane for a secure installation. This system gives an added architectural style look.


Thermoplastic polyolefin is a newer product that is a single-ply heat-welded membrane that is less expensive than PVC and provides a 10-year rating. TPO reflects solar heat which makes it the preferred choice where energy efficiency is desired.

Modified Bitument

Modified Bitumen is one of the most common residential low-slope roof system products. It combines hot asphalt with plastic and rubber additives which are layered between sheets of fiberglass or polyester. Lifespan will be determined by the number of layers.


Flat Roofs Built to Last

The longevity of your flat roof is dependent on the quality of the installation. Sierrans Roofing Ltd. expert roof installers have experience with flat and low-slope roofs for residential and commercial applications. Get a free consultation by calling 778-997-8301 or email us at info@sierransroofing.ca. Alternatively, you can send us a message online if you are looking to install a low-slope or flat roofing system.

Commercial Flat Roof Installation Process

Sierrans has worked on several projects that have low-slope and flat roof systems throughout BC’s Lower Mainland and Fraser Valley. All their low-slope roofs come with warranties ranging from ten to thirty years. They provide the client with a detailed proposal ensuring a precise and clear proposal. The construction phase will be orchestrated by ample communication and include several scheduled safety and quality checks through to completion of the project. Sierrans has been involved in commercial flat roofing projects of all types, and are well versed to deal with engineers, architects, building managers, and owners.

Low Slope Roof Installation and Repairs Include:

  • Multi-story buildings with versatile lifting hoists
  • Large tilt-up warehouse structures
  • Full renovation remodel of multi-unit row homes and apartments buildings
  • Sophisticated architectural roofing designs

Message Us

For a FREE Roofing Estimate

or Call Us at



10 + 13 =

Billing Address

19739 71B Avenue
Langley, BC V2Y 3G8

Business Hours

Monday-Friday: 7am - 7pm
Saturday: 9am - 4pm
Sunday: Closed