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| BACK-MOP
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Installation of a built-up roof by applying asphalt to back side of roofing felt. |
| BACK-NAILING
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The method of fastening the back or upper side of a ply of roofing felt or other component in a roof system so that the fasteners are covered by the following ply. |
| BACK-PLASTERING
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After the plaster or mortar on one side of a plaster wall has hardened, the application of a coat of plaster to the opposite side. |
| BACK-PRIMING
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The application of paint or stain to the backs of siding to ensure the stability of the wood because it keeps moisture from entering through the back sides of the siding. |
| BACK-SURFACING
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A fine mineral material on the back side of roofing materials such as roll roofing to keep them from sticking together while packaged. |
| BACK-TO-BACK
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Two or more items that are placed in mirror image to one another. When used with plumbing fixtures, where a common wall is shared, back-to-back installation saves both space and money. Since the water supply and the waste drain and pipe venting are shared, repeat installation is unnecessary. |
| BACK-TO-BACK ESCROW
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Arrangements necessary when a person plans the sale of one property and the purchase of another, simultaneously. |
| BACKBRUSH
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Process of initially applying pain or stain with a roller or spray and then rubbed into the surface with a brush. Exterior stains are among those products that are best forced into the pores of the wood with a brush. |
| BACKDRAFTING
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The flow of air down a flue/chimney and into a house caused by low indoor air pressure that can occur when using several fans or fireplaces and/or if the house is very tight. |
| BACKER ROD FOAM
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Also referred to as backup, it's used in strips to partially fill any gaps before caulk is applied. Foam rope needs only a thin topping of caulk; Mortite, a semi-solid caulking strip and Oakum, a heavy, chemically saturated rope may also be used. These products are necessary since caulk cannot be applied thickly enough to fill deep gaps. |
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