M

Mansard roof: A roof with two sloping planes of different pitch on each of its four sides. The lower plane is steeper than the upper, and may be almost vertical. See also gambrel roof.

Manufactured Wood: A wood product such as a truss, beam, Glue Lam TM or joist which is manufactured out of smaller wood pieces and glued or mechanically fastened to form a larger piece. Often used to create a stronger member which may use less wood. See also Oriented Strand Board.

Manufacturers Specifications: The written installation and/or maintenance instructions which are developed by the manufacturer of a product and which may have to be followed in order to maintain the product warrantee.

Masonry primer: An asphalt-based primer used to prepare masonry surfaces for bonding with other asphalt products.

Mastic: An adhesive putty material used as a sealant for plumbing or as a seal when waterproofing a foundation wall.  An adhesive used to fasten ceramic tile in non wet areas.

Millwork: All building materials made of finished wood.

Mineral stabilizers: Finely ground limestone, slate, trap rock or other inert materials added to asphalt coatings for durability and increased resistance to fire and weathering.

Miter joint: An angled or square cut joint of two pieces of wood used either to join or turn wood.

Mineral-surfaced roofing: Asphalt shingles and roll roofing that are covered with granules.

Mobile Home Aluminum Roof Coating: Durable one-coat application prolongs the life of mobile home roofs while reflecting sun's rays and providing a decorative surface. Reduces energy costs.

Modified Bitumen roof: A roof covering that is typically composed of a factory-fabricated composite sheet consisting of a copolymer-modified bitumen, often reinforced with polyester and/or fiberglass, and installed in one or more plies. The membrane is commonly surfaced with field-applied coatings, factory-applied granules or metal foil. The roofing system may incorporate rigid insulation.

Mortise:  A rectangular slot that has been cut into a piece of wood that another piece of wood is to be inserted into to form a locking joint.  A cutout for hinges or door strikes.

N

Nail pattern: Any designated or specific pattern used to put nails in a board.

Newel: A post a staircase that the stair railing is attached to.

Nesting: A method of re-roofing with new asphalt shingles over old shingles in which the top edge of the new shingles is butted against the bottom edge of the existing shingle tab.

Nonbearing wall or partition: Any wall that supports no load other than its own weight

No-cutout shingles: Shingles consisting of a single, solid tab with no cutouts.

Non-fibered Aluminum Roof Coating: Thin but efficient reflective barrier to reflect sun's harmful rays and prolong surface life. Also works on metal surfaces.

Non-fibered Roof and Foundation Coating: Dual purposed, this thin-viscosity material doubles as a nonfibered roof or foundation coating.

Non-fibered Roof Coating: Easily applied, this thin coating will give low-sloped roofs, as well as metal and masonry surfaces, added protection. Steel or wooden fences and underground pipe may also be treated.

Nonstructural: Any materials or point in a structure that does not support any loads other than its own weight.

Non-veneer panel: Any wood-based panel that does not contain veneer and carries an APA span rating, such as wafer board or oriented strand board.

Normal slope application: Method of installing asphalt shingles on roof slopes between 4 inches and 21 inches per foot.

Nosing: The overhanging edge of a stair tread or counter top.

O

Open valley: Method of valley construction in which shingles on both sides of the valley are trimmed along a chalk line snapped on each side of the valley. Shingles do not extend across the valley. Valley flashing is exposed.

One piece toilet: A toilet in which the tank and bowl are manufactured as a single vitreous china fixture. Typically, one-piece toilets have a lower profile than two-piece toilets.

Oriented Strand Board or OSB or Chip Board or Wafer Board: A manufactured wood panel made out of 1"- 2" wood chips and glue. Often used as a substitute for plywood in the exterior wall and roof sheathing.

Organic felt: An asphalt roofing base material manufactured from cellulose fibers.

Overhang: The portion of the roof structure that extends beyond the exterior walls of a building.

Over flow tube: The vertical tube inside a toilet tank (usually part of the flush valve), which directs water into the bowl in case the Ball cock malfunctions. If the Ball cock does not shut off properly, water will drain through the overflow tube into the bowl, and flow harmlessly over the dam and out the drain. This prevents potential water damage caused by the tank overflowing, and indicates to the user that there is a problem by a "constant running" condition.

Compiled from multiple sources by: DLM Builders

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