A material installed under carpet to add foot comfort, isolate sound, and to prolong carpet life.

An approximately level building area.

Curved, "U" section of drain pipe that holds a water seal to prevent sewer gasses from entering the home through a fixtures water drain.

A combination of pigments with suitable thinners or oils to provide decorative and protective coatings. Can be oil based or latex water based.

To shim out or add strips of wood to a wall or ceiling in order that the finished ceiling/wall will appear correct.

Extension of an exterior wall above and/or through the roof surface.

A metal form used to form the cavities between joists in cast-in-place concrete floors and roofs.

Lumber made from lengths of wood veneer bonded to produce a solid member.

The application of a portland cement plaster on masonry and concrete walls to make them less permeable to water.

A general term for papers, felts, and similar sheet materials used in buildings without reference to their properties or uses. Generally comes in long rolls.

A panel that includes fuses or circuit breakers used to protect the circuits in a building from overloads.

Construction that uses preassembled panels for walls, floors, and roof.

A thin flat piece of wood, plywood, or similar material, framed by stiles and rails as in a door (or cabinet door), or fitted into grooves of thicker material with molded edges for decorative wall treatment.

A wall placed at the edge of a roof to prevent people from falling off.

Wooden platforms used for storing and shipping material. Forklifts and hand trucks are used to move these wooden platforms around.

Plywood substitute made of course sawdust that is mixed with resin and pressed into sheets. Used for closet shelving, floor underlayment, stair treads, etc.

An infectious biological agent such as bacteria, virus and fungus that is capable of causing disease in its host. https://healthymaterialslab.org/tool-guides/hml-resources

A wall that subdivides spaces within any story of a building or room. A non-load-bearing interior wall.

- A pre-agreed upon schedule of payments to a contractor usually based upon the amount of work completed. Such a schedule may include a deposit prior to the start of work. There may also be a temporary 'retainer' (5-10% of the total cost of the job) at the end of the contract for correcting any small items which have not been completed or repaired.

A small wood piece used in the side and head jambs of double hung windows to separate the upper sash from the lower sash.