What is a 4-Ply roofing system? (B.U.R) roof membranes (Tar and Gravel)
A 4-Ply roofing system involves roofing felts that are typically four plies composed of layers of reinforcement such as fiberglass or polyester felts, with each ply being embedded in a full bed of hot asphalt/bitumen. The bitumen provides the adhesive and waterproofing membrane while the felts provide the membrane reinforcement and the surfacing. The roofing membrane is fully adhered to the underlayment, which typically consists of a vapour barrier, Poly ISO insulation and/or Fiberboard insulation, and four layers of perforated felt #15 and asphalt laminated together. Finally, the gravel ballast protects the bitumen from deteriorating influences of the ultra-violet light caused by the sun, and erosion due to wind, snow, hail and rain.
Why is the best choice system for your roof?
This is the more economical, time tested option and is relatively maintenance free (if installed correctly) for up to 15 years, and is easy to repair. With an estimated life span of up to 30 years with proper scheduled maintenance, this roof is durable and can cope with our harsh winter climate and has been the industry standard in Canada since the early 1900’s.
Key Features
- Resistant to moisture
- Resistant to punctures and tears
- Impact resistant
- Durable and viscoelastic
- Resistant to weathering
What is the average price for a 4-ply roofing system?
To offer you a fare competitive price, Gentech recommends a site visit to go over the following items; area size, location of leaks, type of insulation, accessibility, time of year, type of roof system, how many stories. This is one of the many reasons why it is beneficial to both parties to have an on-site meeting. Call us today at 1-905-270-6799 for your FREE and informative estimate to further discuss options and details.