Flat Roof Replacement

Flat Roof Replacement

25 years ago, the most widely used roof system in Alberta on low slope to flat roofs was the tar and gravel method. Tar and gravel can last for a period of 20 years but warranties are limited. The old system included layers of tar paper and hot asphalt with many applications to keep water out. After the asphalt and paper were adhered, tons of pea gravel was spread on the roof along with hot asphalt. As these roofs age, they split and crack. Often they can be repaired- at least temporarily- until a new 2 ply SBS torch-on roof can be installed.

Our Journeyman roofers have been installing SBS torch-on roofs for 20 years in Southern Alberta. In fact you may be familiar with some of our projects. Exhibition Park, the Coaldale Fire Hall, Henderson Lake Golf Course, and the brand new Waterton Visitor Centre.

In addition to SBS torch-on roofs we install all types of Single Ply roofing, including PVC, TPO and metal.


Quality workmanship done right the first time

Contact Us


2243 31 St N
Lethbridge, AB
T1H 6Z2


Call Us

(403) 320-8128

Commitment To Safety

Waterproofing Roofing and Exteriors is committed to a proactive health and safety program aimed at protecting our staff, our client's property, and the environment from injury or damage. We are an avid supporter and advocate member of the Alberta Certificate of Recognition program which certifies that we have an active Health and Safety Program in place.