As the roofing contractor since 2003 we became one of the leading roofing contractors in Southern Ontario. We specialize in Industrial, Institutional and residential projects of any size and complexity. Our services include roof replacement, new construction, maintenance and environmental programs. With our experience and certified personnel we will provide you with the quality roofing services that you deserve. Your roof is the most important part of your home - it protects you against whatever mother nature throws at you. It is also one of the intricate parts that sets a house apart from a home visually. Therefore it must be treated with care. Roof replacements can be extremely costly and a home owners worse nightmare if not professionally installed .

Roofing FAQs

Coverage & Exposure

Q. Can I use number four grade shingles for a starter course on my roof?

Number four grade shingles are a utility grade for undercoursing of double coursed sidewalls only. They are not a roofing material and they are not to be used as a starter course on roofs.

Q. Is there a method of applying three or four rows (sections) before moving across the roof?

Cut a board the same width as your shingle exposure and a length where you can lay out shingles. Tack it in place being careful not to damage the underlying roof shingles, then lay out and nail a course. Move it up and tack it in place again. Lay out and nail into shingles and repeat five to six courses. Move along, and chalk line every five or six courses, being careful not to damage the underlying roof shingles.

Q. What amount of waste factor should I count on in the product I purchase?

Waste factor will vary, depending upon quality of product, roofing contractor's experience, and aesthetic look desired. Contact your roofing installer for more details about your particular job; unfortunately this is not a question that the CSSB can answer for you as it is project-specific.

Decking & Sheathing

Q. Can I use solid decking for my shake or shingle application?

Shakes and shingles may be applied over spaced sheathing. Spaced sheathing is usually 1 x 4 or 1 x 6 softwood boards and shall not be less than 1 x 4 boards. Solid sheathing is recommended for shakes and may be required in seismic regions or under treated shakes and shingles. Solid sheathing is used in areas with wind-driven snow. Please note that the only solid sheet sheathing tested with shakes and shingles is plywood. Check with your local building official for plywood thickness/ dimensions.

Q. What is the difference between "decking" and "sheathing"?

The two words are used interchangeably in the roofing industry.

Q. What is strapping?

"Strapping" is another term for nailing strips. It is also called "open lathe application", "spaced sheathing" or "skip sheathing".


Q. What type of felt interlayment do you recommend for shake application?

The bottom edge of the felt should be positioned above the butt of the shake at a distance equal to twice the weather exposure. Note: Building officials MAY approve eliminating felt interlayment between shake courses when tapersawn or tapersplit shakes are applied in snow-free areas at weather exposures of less than one-third the total shake length (3-ply roof). ALWAYS check with your local Building Official for project approval PRIOR to deviating from standard application guidelines.

Q. Why do I need felt interlayment between my deck and my shakes?

The felt interlay acts as a baffle that prevents wind driven snow or other foreign material from entering the attic cavity during extreme weather conditions. The felt interlay also increases the roof's insulating value. The felt interlay system forces water to the surface, thus assisting the proper water shedding in your roof.

Q. Are "interwoven felt", "interlayment", and "interlaid felt" the same thing?

Yes. Different regions of the country use different words to describe the same thing.

Q. Is felt interlayment required when shakes are installed on strapping?

Yes. Cedar shake application is a system of shakes with interwoven felt.

Q. Is felt interlayment required when shakes are installed on solid sheathing?

Yes. Cedar shake application is a system of shakes with interwoven felt.

Q. What are your requirements for felt installation on hip and ridge?

A strip of felt, metal and/or rubber flashing should be laid under the hip and ridge product.

Q. Do you recommend laying the untreated shingles directly over Type 30 roofing felt on the solid sheathing (plywood)?

The untreated shingles will last longer and the roof system will work better if you have an airspace directly below the shingles to allow them to breathe and dry out. It will also allow summer condensation to run out from under the shingles. Shingles directly on eave protection will not dry out very readily and will not last as long as the rest of the roof shingles. A continuous ventilation product can be installed only over the eave protection, under the shingles, to maximize ventilation.

Q. Can I put fastener-sealing eave protection over the decking (sheathing) before applying the shingles?

Fastener-sealing eave protection is very helpful at the eaves and the valleys. If Type 30 roofing felt is installed on the remainder of the roof with a continuous ventilation product on top of the felt and eave protection you will have a great roof. If using a shake felt system product you only need the felt and eave protection.

Q. I have a buckling effect happening with my sidewall product. What went wrong?

Your project is experiencing what is called "fishmouthing". The bowing or curving of the shingles is due to inadequate joint or keyway spacing. When the shingles naturally expand and contract with moisture content due to weather conditions, proper joint or keyway spacing provides the room that allows them to remain flat.