IN PROGRESS

The Sealtec Flatroof Inc Process

Sealtec Flatroof Inc is a family owned and operated business, out team has over 100-years in roofing experience specializing in the installation or restoration of flat roofs. Offering many types of  roofing, We can supply a roof for any application.

Our roofs carry a complete warranty with a maintenance plan for the life  of the building. Sealtec Flatroof Inc will fulfill your roofing requirements expeditiously. Our installers and service technicians are fully trained and dedicated to quality. Sealtec Flatroof Inc has matured as a known and respected name in flat roof industry.

With a reasonably priced roof with the highest quality we will provide our customers comfort and security for many years.

Sustainable Roofing

A Practical Approach To Roof Retrofits

There is a serious barrier in the roofing world that handicaps us in trying to achieve sustainable and environmentally friendly roofing practices. It is a barrier that is costing consumers unnecessarily large monetary and energy losses. We can make significant progress towards sustainable roof retrofits and enormous progress in building energy conservation by making a tiny shift in our beliefs about roofing philosophy. It is a common belief that a roofing system is completely deteriorated and must be discarded at the end of its service life. This is a myth. There are few instances where it is practical to completely remove the entire roofing system when doing a roof retrofit project. We don’t use this type of reasoning when performing retrofits to any other building component or portions of the building envelope. There is no expiry on most of the components of a roof system. Insulation that is kept dry will perform for an indefinite period of time. The waterproofing layer of the roofing system is generally the only component of the roofing system that requires cyclical replacement.

Buildings account for 30 % of energy use and 27% of greenhouse gas emissions in Canada. Few building systems have a shorter life span or are replaced as frequently as roofing systems. With traditional roofing practices, roofs produce huge amounts of waste at the end of each service life. There are few areas of a building that can achieve such huge improvement towards sustainability and energy conservation as roof retrofits.

At the Oak Ridge National Laboratory (ORNL) Sustainable Low-Slope Roofing Work Shop in 1996 a Sustainable Roof System was defined as:

“ a roofing system that is designed , constructed, maintained, rehabilitated and demolished with an emphasis throughout its lifecycle on using natural resources effectively and preserving the global environment.”

The requirements of a sustainable roof are as follows. It conserves energy. It has an extended service life and it reduces or eliminates waste. An extended service life can be designed into the system. Building practice can be adopted that will reduce or eliminate waste. Most importantly all the above can be achieved at a cost comparable to more traditional roofing systems..

To minimize the burden on the environment we can design roof retrofits to be completely sustainable at the end of the service life of the new roofing system. A roof retrofit can be designed to reduce waste in the first retrofit and to totally eliminate waste in future retrofits. Most importantly it can be designed to be implemented at a competitive price.

Have a look at a theoretical model to test the viability of this approach.

As an example, lets compare at a typical roof retrofit specification to a sustainable roof retrofit specification on a 20,000 square foot industrial building with the following conditions: The building is 20 feet high, 100 wide by 200 feet long. The roof has an existing R-9 in the roof and R 8 in the walls.

Roof Myth

These two specifications will cost approximately the same: however, the results are drastically different.

From an energy savings perspective the building with the typical roof retrofit is no improvement over the old roof. The roof that was designed for sustainability now has an total insulation of R-29.

It is serious that until sustainable roofing practices are implemented this building will continue to generate 20 tons of waste at the end of each roof’s service life.

What is exciting is that the building with the sustainable roof retrofit now has an average R-value of 22. This will greatly reduce the energy consumed from heating and cooling. Other energy savings are generated by using a white reflective roof membrane.

The obvious ROI is substantial savings on energy bills from reduced heating and cooling costs. All we had to do is change our retrofit design and start saving.

NOTE: The above sustainable design is now a Self Drying Roof assembly with numerous benefits. ( Topic for a future article.)This will ensure that no moisture is accumulated in this portion of the building envelope.

NOTE: This article is not encouraging the practice of installing roof overlays over wet substrates.

References:

NRCA Roofing Manual 2010 Condensation Control and Reroofing.

Moisture Control in Buildings: A Key Factor in Mold Prevention 2nd Edition ASTM International

Towards Sustainable Roofing Presentation : By DR. Karen Lui National Research Council

Contact Us
Appointment Only

Hamilton Telephone
905-549-8784

Burlington Telephone
905-632-8784

Fax
905 549 5058

Toll Free
1-866-333-1935

Email
roy@sealteck.ca

Mailing Address
P O Box 20085,
Burlington, ON,
L7P 0A1