Waterproofing Roofing. Your Re-Roofing Specialists
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Glossary of terms used on this site

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Term Definition
Caulk

To fill a joint with mastic or asphalt cement to prevent leaks.

Chalk line

A line made on the roof by snapping a taut string or cord dusted with chalk. Used for alignment purposes.

Class "A"

The highest fire-resistance rating for roofing as per ASTM E-108. Indicates roofing is able to withstand severe exposure to fire originating from sources outside the building.

Class "B"

Fire-resistance rating that indicates roofing materials are able to withstand moderate exposure to fire originating from sources outside the building.

Class "C"

Fire-resistance rating that indicates roofing materials are able to withstand light exposure to fire originating from sources outside the building.

Closed cut valley

A method of valley treatment in which shingles from one side of the valley extend across the valley while shingles from the other side are trimmed two inches from the valley centerline. The valley flashing is not exposed.

Coating

A layer of viscous asphalt applied to the base material into which granules or other surfacing is embedded.

Collar

Pre-formed flange placed over a vent pipe to seal the roof around the vent pipe opening. The collar is also called a vent sleeve.

Color-through

During manufacturing, the color is mixed throughout the roofing material to become an integral part of it. When the product is cut, the affected area shows the same color as the surface.

Concealed nail method

Application of roll roofing in which all nails are driven into the underlying course of roofing and covered by a cemented, overlapping course. Nails are not exposed to the weather.

Condensation

The change of water from vapor to liquid when warm, moisture-laden air comes in contact with a cold surface.

Counter flashing

That portion of the flashing attached to a vertical surface to prevent water from migrating behind the base flashing.

Course

A row of shingles or roll roofing running the length of the roof.

Coverage

Amount of weather protection provided by the roofing material. Depends on number of layers of material between the exposed surface of the roofing and the deck; i.e., single coverage, double coverage, etc.

Cricket

A peaked saddle construction at the back of a chimney to prevent accumulation of snow and ice and to deflect water around the chimney.

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Waterproofing Roofing

The Re-Roofing Specialists
2243 31 St N
Lethbridge, AB
T1H 6Z2
Phone: (403) 320-8128

Contact us today for your free quote!

Commitment To Safety

 COR Safety certifying body

Waterproofing Roofing is committed to a proactive health and safety program aimed at protecting our staff, our clients property, and the environment from injury or damage. We are an avid supporter and advocate member of the Alberta Certificate of Recognition program which certifies that we have an active Health and Safety Program in place.

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