Day: September 15, 2015

Roofing Work
Roofing Fundamentals and Safety Practices

A well-constructed roof should last from ten to twenty years, depending on weather conditions and the materials used in its construction; however, no roof is expected to continue forever. Most roofs will require a certain amount of maintenance and repair on an annual basis.

It is to your advantage to have an understanding of basic roofing fundamentals, even if you do not intend to do the work yourself because such knowledge can save you money when you deal with professional roofers. You will be able to appraise the work better as it is being done.
If you feel that laying a new roof or repairing a roof will be too complicated for you to handle, then contact a reputable roofing firm. Many are listed in the Yellow Pages, but you should check with the local Better Business Bureau about your choice before signing any contracts or making any commitments. The Better Business Bureau may have a file of complaints against the firm you choose (being in the Yellow Pages are only a listing, not a seal of approval). Never allow a door-to-door salesman to talk you into a “cut-rate” job. Very few reputable roofing firms do business this way.
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Materials
Asphalt Shingling, Built-Up Roofing and Wood Shingling

Asphalt shingles are the most common type of roofing material used on pitched roofs. They are lightweight, comparatively inexpensive, and available in many different colors, sizes, and shapes.
Asphalt shingles are sold in the form of individual shingles or as strips of shingles joined together in two, three, or four tab units. The strips are 36-inches long. Their width will vary from slightly over 11 inches to 12 inches wide, depending upon the style and manufacturer. Lock-type asphalt shingles are also available in a number of different styles.
Before laying a new roof with asphalt shingles, you must first calculate the total area to be covered. A high school plane geometry text will provide you with the formulas necessary to calculate the square footage of surface area. Many roofs form uncomplicated rectangular or squares.
Unfortunately, hip roofs, dormer roofs, and other types of minor roofs present more complicated surfaces. In any event, the total square foot area of the roof covering the structure must be calculated.
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Materials
Tile Roofing, Slate Roofing and Metal Roofing

Roofing tiles are made from a variety of different materials, including shale, shale and clay, cement, cement and asbestos, and metal. Both curved and flat types are available for installation on roofs. Curved tiles are manufactured in the mission and Spanish style designs; flat tiles in the shingle and interlocking designs.
Mission roofing tiles are laid in courses which overlap on alternating sides. The concave side, or cover, forms a course Cover Tile Used to Cap the Ridge of tiles which overlaps with the convex parallel courses on either side. The cover tile is nailed to a wood strip fastened to the roof sheathing; whereas the pan tile is nailed directly to the sheathing. The roof ridge is capped by a cover tile which is nailed to a wood strip fastened to the ridge.
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