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  2. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    Standing-seam metal roof with concealed fasteners. Mechanically seamed metal with concealed fasteners contains sealant in seams for use on very low sloped roofs, suitable for roofs of low pitch such as 0.5/12 to 3/12 pitch. Flat-seam metal with or without soldered seams. Steel coated with a coloured alloy of zinc and aluminium. Stone-coated ...

  3. Glossary of construction cost estimating - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_construction...

    A Allocation of costs is the transfer of costs from one cost item to one or more other cost items. Allowance - a value in an estimate to cover the cost of known but not yet fully defined work. As-sold estimate - the estimate which matches the agreed items and price for the project scope. B Basis of estimate (BOE) - a document which describes the scope basis, pricing basis, methods ...

  4. Covering (construction) - Wikipedia

    en.wikipedia.org/wiki/Covering_(construction)

    The roof covering is the exterior part of the roof and does not contribute to the building's stability. It is designed to endure all weather conditions such as rain, snow, hail, and wind, as well as external environmental factors like marine environments and the weight of maintenance personnel.

  5. BBB Tip: How to hire a trusted roofing contractor to repair ...

    www.aol.com/bbb-tip-hire-trusted-roofing...

    The BBB has tips to consider when hiring a roofer. No matter what the season, homeowners are making the move to repair or replace their current roofs. The BBB has tips to consider when hiring a ...

  6. List of roof shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_roof_shapes

    Butterfly roof (V-roof, [8] London roof [9]): A V-shaped roof resembling an open book. A kink separates the roof into two parts running towards each other at an obtuse angle. Karahafu: A type of gable found in some traditional Japanese buildings. Hidden roof: A type of Japanese roof construction.

  7. Plough - Wikipedia

    en.wikipedia.org/wiki/Plough

    This limited the construction to a small amount of wood (although metal edges were possible). These ploughs were fairly fragile and unsuitable for the heavier soils of northern Europe. The introduction of wheels to replace the runner allowed the weight of the plough to increase, and in turn the use of a larger mould-board faced in metal.

  8. Metal roof - Wikipedia

    en.wikipedia.org/wiki/Metal_roof

    A metal roof is a roofing system featuring ... Efficiency ranges from 10–18% but costs only about $2.00–$3.00 per watt of installed capacity, compared to ...

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