To aid architects and engineers in selecting structural systems that best fit their needs, CONCRETE CONSTRUCTION will describe briefly in this and two succeeding issues 14 of the systems most widely accepted. Some of the information is applicable to floors as well as roofs.
Not only are tiles visually appealing, they are also practical. Tile roofing comes with a Class A fire rating, which provides safety for your home, reduces insurance costs, and improves the resale value of the home. Concrete tiles are also very energy efficient – they act as a great insulator – which allows for energy cost savings.
This roofing is basically a sheet of rubber sold in large rolls, from 10' x 50' to 50' x 100'. EPDM comes in two standard thicknesses, .045 and .060, and is available in white or black. It can be installed in several ways; the most common me thod is to glue the EPDM to a high-density fiber recover board nailed or screwed to the roof deck. Special techniques must be used if the flat roof abuts an asphalt-shingled roof, since direct cont act with asphalt will chemically break down EPDM.
Interlocking panels mimic slate, clay or shingles and resist damage caused by heavy rains (up to 8.8 inches per hour), winds of 120 miles per hour, uplifting, hail and freeze-thaw cycles. Consequently, they're an economical, effective choice for wet, windy regions or areas prone to wildfires. Some stone-coated steel roofs are warranted for the lifetime of the house.
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