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There are two types of roofs: flat and pitched (sloped). Most commercial, industrial and apartment buildings have flat or slightly sloping roofs. Some roofers work on both kinds. Most flat roofs are covered with several layers of materials. Roofers first put a layer of insulation.

Next, they install partially overlapping layers of roofing felt, a fabric saturated in bitumen, over the surface. Roofers use a mop to spread hot bitumen over the surface and under another layer. This seals the seams and makes the surface watertight. Roofers repeat these steps to create the desired number of layers, called plies.





A growing number of flat roofs are covered with a membrane of waterproof rubber or thermoplastic compounds. Glue mechanical fasteners, or stone ballast hold the sheets in place. The building must be of sufficient strength to maintain the ballast.

To apply shingles, roofers first lay, cut, and sew 3-foot bits of roofing felt lengthwise over the entire roof. Workers measure and cut the felt and shingles to fit intersecting roof surfaces and to fit around vent pipes and chimneys.

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Roofers using tile, metal shingles or shakes follow a similar procedure. Many roofers also water-proof and damp-proof concrete and masonry walls and floors.

When damp-proofing, they usually spray a bitumen-based coating on exterior or interior surfaces. Quite a few roofing materials can be found... Asphalt Asphalt is the most commonly used roofing material. Asphalt products contain roll-roofing roofing, shingles, and modified bitumen membranes. Asphalt shingles are the option for pipes.

There are four distinct types: individual shingles, laminated, interlocking, and strip. Laminated shingles are composed to supply thickness. Interlocking shingles are utilised to supply greater wind resistance. And individual shingles normally come in rectangular and hexagonal shapes. Roll-roofing goods are utilized for flashings and underlayments, largely in fix roof leak from inside attic residential programs.



Only hustad roofing mineral-surfaced is used as a roof covering for small buildings, such as sheds. Smooth-surfaced products are used chiefly as flashing to seal the roofing at intersections and protrusions, and also for supplying extra deck security in the eaves and valleys of the roof. Saturated felt is used as an underlayment between the roof deck and the roofing material.

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Built-up roofing (or BUR) is the most popular selection of roofing used on commercial, industrial and institutional buildings. BUR is used on low-sloped and horizontal roofs also is made up of layers of bitumen and ply sheets. Elements of a BUR system include surfacing material, a vapor retarder, insulation, membrane, and the roofing deck.

Factory surfacing, when implemented, includes vitamin granules, slagaluminum or aluminum. The bitumen determines the membrane's physical traits and supplies security security, whereas the reinforcement adds strength, puncture-resistance and total system integrity. Even though some contain copper and other metals, metal Most metal roofing products contain aluminum or steel.

Metal roofing can be obtained as seam and battentiles, shingles and shingles. Products also come in a variety of styles and colours. Metal roofs with solid sheathing control sound from rain, hail and bad weather just as well as any other roofing material. Metal roofing may also help remove ice damming at the back.



Metal roof costs more than asphalt, but it lasts two to three times more than asphalt and wood shingles. Wood Wood shakes offer a natural look with a lot of personality. Because of variations in color, width, thickness, and cut of the wood, no 2 shake roofs could possibly look the same.

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It is helpful to insulate the attic, and it allows the house to breathe, circulating air under the felt rows on which wooden shingles are laid through the tiny openings. A wood shake roof, but demands repair and proper upkeep, also it will not last as long as some other products. local roofers Rot, Mildew and pests can become a problem.

Flame safety codes unrat most timber heaters. Many use spray-on or wipe fire retardants , which provide security and are only successful for a couple of years. Some replacements are impregnated with flame retardant and meet national fire protection criteria. Wood heaters is significantly much more complex with shingles than roofing, and also the grade of the completed roof depends on the experience of the contractor, as well as the caliber of the shakes utilized.