Choosing a commercial roofing contractor with the knowledge and expertise to design and install the most appropriate roofing system is more important than ever.
A properly installed system completed to industry standards can last more than 25 years. A poorly-installed system will give you problems from the start.
Our estimators know what is important to our commercial customers:
- Accurate, Competitive Estimates
- On-time Performance
- Quality Installations
- Experienced Journeymen
- Adequate resources and manpower for any size job
Commercial Roofing Experience
Surlang Roofing has been in the roofing business for over 20 years with experience installing, servicing, and maintaining commercial roofs throughout Vancouver’s Lower Mainland and the Fraser Valley.
We have experience with roofing installations for a wide variety of buildings including:
- shopping malls & retail outlets
- office buildings
- medical centers
- agricultural structures
- multifamily, strata & apartments
Our expertise includes the installation of most commercial roofing systems, from two-ply SBS membrane systems for greater durability, single-ply membrane for a more economical roof to sloped insulation packages for better drainage on older buildings.
Commercial roof installations sometimes require working with curb-mounted units that may involve the use of cranes and coordination with other trades – an area where Surlang Roofing has the experience and contacts to get the job done.
Built-Up Roofing (BUR / Tar and Gravel)
Once the mainstay of commercial roofing and flat roofing in general, built-up roofing systems are now rarely used due to advancements in the membrane and SBS roofing systems.
Built-up roofing is structured like lasagna, with multiple layers of roofing felts offset and laminated together with hot asphalt bitumen and completed with a protective coating, usually aggregate such as gravel.
The biggest disadvantage to built-up roofing is the smoke and odour that result from heating the asphalt or bitumen which can be offensive to customers and surrounding businesses and residents.
Free Consultation & Estimate
Our estimators will give you a competitive quote for your roofing project.
We offer the following:
- Free consultation on roofing systems to best meet your needs and budget
- A no-obligation cost estimate
SBS / Torch-On Roofing
SBS (Styrene Butadiene Styrene) is a bitumen-based product modified with synthetic rubber. It is installed using an open-flame torch that heats the bitumen to its melting point so the membrane can be completely fused.
The standard installation method for an SBS roof system is a two-ply membrane, installed over a suitable protective barrier to prevent the open flame from contacting the wooden roof deck surface.
The Pros and Cons
One advantage of SBS/torch-on roofing is its durability. Because of the installation of two plies of a membrane that get completely fused together, the result is a very durable, water-tight system.
SBS/Torch-On systems are also versatile and can be used almost anywhere water-proofing is needed, above or below grade.
A disadvantage of SBS roofing systems is the need for open flame and the hazards that can result from installers who may lack the experience necessary to safely perform the duties required.
TPO Roofing Systems
TPO (Thermoplastic Polyolefin) is a single-ply roof membrane composed of a synthetic rubber compound, generally white in colour, which can be mechanically fastened, fully adhered, or held down with ballast.
Two advantages of TPO single-ply roofing are:
- speed of installation, as the product itself, comes in rolls of up to 12 feet in width
- once fused together, the membrane is essentially a one-piece unit with seams that will not deteriorate over time.
The fusing of the seams and other protrusions is done with hot air, meaning there is no open flame, as is the case with other forms of flat roofing.
One disadvantage of TPO roof systems is that it is a single-ply membrane. Although reinforced with polyester and more durable than EPDM, it does not have the puncture resistance of an SBS or BUR membrane.
Single-ply TPO roof systems are best suited to large warehouse-type structures.
EPDM Roofing Systems
EPDM (Ethylene Propylene Diene Monomer) roofing systems are single-ply, generally self-adhered (glued) or held in place with ballast. The membrane itself is black in colour and resembles the rubber from a tire’s inner tube, but it is thicker and reinforced.
The biggest advantage of EPDM single-ply roofing is its low cost. In fact, an EPDM / ballast roof system has the lowest cost per square foot of any commercial roofing. It is both inexpensive to purchase and labour costs can be kept down because the product is easy to install.
It comes in rolls of up to 50 feet in width and it can be applied to large areas in a short period of time. Single-ply EPDM roof systems are best suited to large, uncomplicated structures such as large warehouses.
- Few seams, unlikely to leak
- Maybe ballasted, adhered or fastened
- Durable and resistant to scratches and scuffs
EPDM roof systems rely on adhesives to bond all seams and protrusions which can be difficult in cool, damp Lower Mainland weather. The bond between the membrane and other components can be susceptible to occasional failures.
- Punctures fairly easily
- Black membrane absorbs UV light and heat