Built-up roof: A flat or low-sloped roof consisting of multiple layers of asphalt and ply sheets.
Bundle A package of shingles. There are 3, 4 or 5 bundles per square.
Butt edge: The lower edge of the shingle tabs.
Built-Up Roof Membrane - a continuous, semi-flexible roof membrane assembly, consisting of plies of saturated felts, coated felts, fabrics or mats between which alternate layers of bitumen are applied, generally surfaced with mineral aggregate, ...
Built-up roof " A roofing composed of three to five layers of asphalt felt laminated with coal tar, pitch or asphalt. The top is finished with crushed slag or gravel. Generally used on flat or low-pitched roofs.
Built-up roof: A type of commercial, or "flat" roof finish, produced by applying alternate layers of roofing felt and hot asphalt or pitch.
Built-up roof is a roofing material applied in sealed, waterproof layers on a flat or low-pitched roofs.
Butt joint is the where two pieces of wood or molding are joined at a point.
C ...
BUILT-UP ROOF: A continuous roof covering made up of laminations or plies of saturated or coated roofing felts, alternated with layers of asphalt and surfaced with a layer of gravel or a cap sheet; ...
BUILT-UP ROOF: Roofing for low-slope roofs composed of several layers of felt and hot asphalt or coal tar, usually covered with small aggregate.
Built-up roofs are typically constructed of 2, 3, or 4 plies of 15 or 20-felt paper material, held or mopped with melted asphalt. Older installations may have been held down by ballast of either slag or gravel.
Asphalt Built-up Roofs
Asphalt roofs may be unsurfaced (a coating of bitumen being exposed directly to the weather) or surfaced (with slag or gravel embedded in the bituminous coating).
BUILT-UP ROOF: roofing consisting of many alternating layers of asphalt and felt.
BUSS BAR: rectangular metal bar (usually copper) for carrying large electrical current.
Built-up Roof
A low-slope (or flat-seeming) roof covered with alternating layers of roofing felt and hot-mapped asphalt and topped off with a layer of gravel.
Cornice ...
Built-up Roof A roofing composed of layers of felt impregnated with pitch , coal tar, or asphalt. The top is finished with crushed stone or minerals. It is used on flat or low-pitched roofs.
Bullnose rounded edge units.
Built-Up Roof Membrane: A roof membrane consisting of layers of bitumen, which serves as the waterproofing component, with plies of reinforcement fabric installed between each layer.
BUILT-UP ROOF
A roof covering composed of three or more layers of roofing felt or fibreglass saturated with coal, tar or
asphalt. The top is finished with crushed stone, gravel or a cap sheet. Generally used on flat or low-pitched
roofs.
Built-up roofing materials whose top ply consists of a granule-surfaced sheet; this is an asphalt saturated felt that is coated on one or both sides and is surfaced on the weather exposed side with mineral granules.
Mineral Wool ...
Tip: Built-up roof blade
by Bob Whiteley
Tip: Snapping angled chalklines on sheathing version 2.0 ...
built-up roof (couverture multicouche, f.) A roof covering consisting of layers of roofing felt laid in pitch or asphalt. The top is finished with crushed stone, gravel, or a cap sheet. Generally used on flat or low-pitched roofs.
Roll roofing and built-up roofing are the most common techniques used to cover flat roofs.
A raised spot in a built-up roof caused by expansion of entrapped moisture, water vapor, or other gases, between any of the layers of roofing or mopping.
A loose raised spot on the gypsum board face usually due to an air space or void in the core.
Asphalt products include shingles, roll-roofing, built-up roofing, and modified bitumen membranes. Asphalt shingles are typically the most common and economical choice for residential roofing. They come in a variety of colors, shapes, and textures.
So, the type of roofing that you find in these buildings tends to be built-up roofing composed of tarpaper roll and hot tar. A "torch-down" roof is one that is softened and melted into place by the workers' propane torches.
A cap sheet is a building material used in built-up roofing, or BUR. BUR applications are used for flat roof surfaces, and consist of several layers of material designed to create a water-tight surface.
- Emulsion Type Coating is adaptable over asphalt built-up roofs, metal roofs and those similarly composed, provided there is adequate drainage. When applied in the proper thickness, it chalks slowly and doesn't blister.
Ply Sheet: A layer in built-up roofing.
Plywood: A piece of wood made of three or more layers of veneer joined with glue, and usually laid with the grain of adjoining plies at right angles.
Gravel Stop: A strip of metal with a vertical lip used to retain the gravel around the edge of a built-up roof.
BASE SHEET - Bottom layer of built-up roofing.
BATT - A section of fiberglass or rock-wool insulation.
BAY WINDOW - Any window space projecting outward from the walls of a building, either square or polygonal in plan.
Alligatoring - the cracking of the surfacing bitumen on a built-up roof, producing a pattern of cracks similar to an alligator's hide; the cracks may or may not extend through the surfacing bitumen.
A membrane, usually made of built-up roofing, to provide a positive waterproof floor over the substrate, which is to receive a tile installation using a wire reinforced mortar bed. (CTI)
Wearing course ...
Cap Sheet: A top layer in built-up roofing.
Cap Sheets: In roofing, one to four plies of felt bonded and top-coated with bitumen that is laid over an existing roof as a treatment for defective roofs.
Membrane: A generic term relating to a variety of sheet goods used for certain built-up roofing repairs and application.
Metal Edge: Brake metal or metal extrusions which are secured at the perimeter of the roof to form a weather-tight seal.
TOP MOPPING - The finished mopping of hot bitumen on a built-up roof.
TOP PLATE - Top horizontal member of a frame wall.
TORCHING - Applying direct flame to a membrane for the purpose of melting, heating or adhering.
Gravel
Loose fragments of rock used for surfacing built-up roofs, in sizes varying from 1/8" to 1 3/4".
Crushed stone or gravel that comes in a wide range of sizes that is used to as a base for concrete or for surface built-up roofs.
Agreement
An arrangement between the parties regarding a commitement or method of action.
 See also: Roofing, Roof, Water, Design, Sheet
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