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Red Seal Roofers
Our Roofing Technicians have the best training in the industry.
Every project starts with a certified commercial roof inspection.
Member since 2007
An active member of the Calgary Business Community since the start.
Exclusive 5-year Elite Workmanship Warranty on all of our projects.
For over years Calgary and Southern Alberta building owners, facility managers, roof consultants, and engineers have trusted Calgary Elite Roofing to complete thousands of repair and replacement projects.
Our commercial roofing services:
Visual roof inspection
Destructive and non-destructive testing
Written inspection reports/documentation
Repairs to all commercial roofing systems
Replacement in alignment with manufacturer specifications
Sheet metal work
COMMERCIAL FLAT ROOF
Calgary Elite Roofing offers flat roof repair, maintenance, and installation of commercial roofing systems. From homeowners, property managers, condominium corporations, corporate clients, and institutional customers to hi-rise, condominium complexes, and more.
Your investment in a waterproofing system should be based on selecting flat roofs which are designed to be the best over the entire life cycle of the assembly (typically 20-plus years). The key to keeping replacement costs down and extending the life of your commercial roof is to provide for periodic maintenance, especially on commercial roofing systems. This is true for all applications and types of commercial roofs.
Calgary Elite Roofing has provided professional flat roofing installations to hundreds of commercial clients across Southern Alberta. When quality and performance matter, Calgary elite Roofing is a preferred choice as a highly credentialed and experienced roofer in Southern Alberta.
Cold Applied Flat Roofing
The term “cold-applied roofing system” means a built-up roofing system assembled using solvent-borne bituminous (liquid) adhesives with multiple plies of reinforcement. There are many advantages that come with this type of roofing system.
Among these advantages of cold application roof coatings and cement are their economical, proven performance life, and ease of use. Roof coatings and cement are generally one-component products that can be applied directly from the container.
Today’s coating and cement are versatile and applicator-friendly. Non-flammable products are also available.
There are 3 cold application systems:
1. Cold-Process Built-Up Roofing System
This type of roof can now be built in a variety of ways. The predominant technique is to use heavyweight asphalt coating fiberglass “base” sheets and adhere them with solvent-borne asphalt adhesives in multiple plies.
The first sheet is usually attached to the substrate (for insulation) and subsequent plies are embedded in an application of adhesive. The membrane is then covered with an aggregate surface or roof coating of choice.
Cold application process built-up roofing systems use coated or un-coated polyester reinforcements, or composite (polyester/fiberglass) reinforcements, in conjunction with either solvent-borne or waterborne adhesives. The combination of reinforcement and adhesive is typically proprietary to the system provider and compatibility should be verified with the manufacturer.
2. Modified Bitumen Adhesive Application
Membranes Modified Bitumen roofing is similar to built-up roofing in that it employs reinforcing materials coated with bitumen. The primary difference is the use of “modification” or the addition of polymers to the bitumen to achieve improved characteristics.
Like built-up roofing, modified bitumen roofs were typically installed using moppings of hot asphalt. An alternate approach for some types of modified bitumen was to use a propane torch to melt the back of the sheet, creating a molten adhesive in which the roll could be embedded.
Perhaps the fastest-growing segment of cold-process roofing is the application of modified bitumen roofing in bituminous cold-process adhesives. For obvious safety reasons, the use of cold-applied roofing has provided an attractive alternative to the use of hot asphalt or open flame.
These roofs typically have a mechanically attached base sheet and one or two plies of modified bitumen membrane installed in bituminous adhesives.
3. Liquid-Applied Monolithic Membrane Systems
The third type of cold-applied roof now exists which blurs the line between roof coating and roof membrane system. That is the liquid-applied monolithic roof system. Typically made of high-tech polymeric resins such as urethanes, or bitumens which have been modified with polymers such as SEBS. These roofs are applied as a liquid and may not rely on reinforcing the material but cure to form a tough, rubber-like membrane.
These types of roofs are monolithic (no seams) and are typically considered self-flashing.
Good flat roofing practices
We are meticulous about our work. When applicable we core sample to verify the existing roof assembly before recommending a course of action. Core samples are useful to determine:
- what attachment method can be used – adhered or mechanically attached
- potential controlled products can be identified – coal tar pitch, asbestos, etc.
- The thickness of the roof assembly
- The approximate weight of the assembly
Once the core test has been recorded, we put the materials back and patch the area.
The replacement cost of a commercial roof is based on the size of the project.
The requirements of the building envelope are one of the first considerations that should be reviewed. By asking questions like, “How did the last roof assembly perform over its life cycle?” or “Has the internal use of the building changed?”
A site inspection is almost always required to inspect and record potential design failures that may need to be corrected. It is recommended for a HAAG certified commercial roofing inspector to do this part.
Inspections should be done for example if an area of poor drainage where water has ponded for years and accelerated the deterioration of the membrane. Here will be also a good opportunity to assess if there's a need to remove any unused roof equipment or penetrations. As well as install new roof equipment if required.
Once the size of the project is determined and the inspection is done, a roof assembly can be tailor-made for the building. Depending on the membrane type, desired R-value, together with applicable provincial and federal regulations, an overall estimate cost can be formulated and presented to the client.
The best roofing material for your roof is subjective. Each project is different and the recommended application varies accordingly
Every membrane and assembly component type has strengths and weaknesses. For example, installing a modified bitumen roof assembly on a large open concept warehouse is not as cost-effective as a ballasted EPDM ( Ethylene propylene Diene monomer ) roof assembly. Both can carry a similar warranty and protect from similar environmental concerns, but the EPDM roof assembly is significantly less expensive initially. On the other hand, the modified bitumen roof is better for roof types with higher foot traffic and roof equipment maintenance needs.
Flat roofs are common on commercial roofs for a variety of reasons. The functionality of having some of the building's control mechanisms placed on the exterior can open the interior for more workspace and productivity.
Other factors such as the control mechanisms of heating and air conditioning systems, ductwork, satellite dishes, large kitchen exhaust fans that are usually involved in commercial operations play a role here.
Costs are another factor, It can be very costly to have a sloped roof design on a low-level building such as a shopping mall. The vast footprint of the structure would cause a sloped roof design to be many times the height of the occupied space below which would add to the cost of the building significantly.
Architectural design options are highly sought after with a flat roof. Flat roofs are also not entirely flat. They do have a slight gradient that is typically 2% or 4%. Flat roofs are a monolithic design. This means that if installed correctly, the flat roof could hold water and not leak. This becomes suitable for situations where there are many penetrations in close proximity and potential snow buildup could allow water ingress on a sloped roof (watershed design).
THE ELITE ADVANTAGE
Honest and earnest appraisals of your roofing portfolio
Options tailored to your budget, by providing solutions where possible to extend the life of your existing roof
Leak tracking and mitigation services
Budget reporting/inspection reporting designed to educate our clients on their best solutions
Professional repair work
Installation of flat roofing assemblies in alignment with manufacturer standards and industry's best practices
Courteous, knowledgeable technicians and journeypersons
Warranties and related services you can rely on
Bonded, financially stable, fully insured and with a long trajectory in Southern Alberta
Our courteous and experienced representatives are trained to evaluate and provide our commercial clients with the best cost-effective solutions for correcting existing leaks, roof replacement, general roof repair, and maintenance solutions designed to extend the life of your flat roof investment.
Thank you for choosing Calgary Elite Roofing for your next commercial roofing project!