A plumbing vent pipe that penetrates the roof.

Plywood bonded with a type of adhesive that is highly resistant to moisture and heat.

A structural panel constructed with outer skins of plywood applied over an internal frame of wood members forming a rigid panel.

A panel (normally 4' X 8') of wood made of three or more layers of veneer, compressed and joined with glue, and usually laid with the grain of adjoining plies at right angles to give the sheet strength. A glued wood panel made up of thin layers of wood veneer with the grain of adjacent layers at right angles to each other or of outer veneers glued to a core of solid wood or reconstituted wood.

Work performed by the plumbing contractor after the Rough Heat is installed. This work includes installing all plastic ABS drain and waste lines, copper water lines, bath tubs, shower pans, and gas piping to furnaces and fireplaces. Lead solder should not be used on copper piping.

Sleeves that fit around drain and waste vent pipes at, and are nailed to, the roof sheeting.

Plastic pipe used to collect and drain sewage waste.

Work performed by the plumbing contractor to get the home ready for a final plumbing inspection. Includes installing all toilets (water closets), hot water heaters, sinks, connecting all gas pipe to appliances, disposal, dishwasher, and all plumbing items.

A term to denote the number of layers of roofing felt, veneer in plywood, or layers in built-up materials, in any finished piece of such material. One of a number of layers in a layered construction.

Interior type plywood manufactured in a press without external applications of heat.

Plywood manufactured for indoor use or in locations in which it would be subject to moisture for only a brief time.

Panels formed when flat plywood sheets are reshaped into a curved configuration by steaming or the use of plasticizing agents.

A point where a bearing/structural weight is concentrated and transferred to the foundation.

Plywood that is glued to the desired shape either between curved forms or by fluid pressure applied with flexible bags or blankets.

Plywood panels with the same glue as exterior plywood but with more restrictive veneer specifications.

A polyester made by linking certain phenols through carbonate groups.

PCB manufacturing in the US stopped in 1977 but the compound is long-lasting in the environment (mostly in soils) around old manufacturing and disposal sites, in old electrical transformers and electrical devices, and in fish and their predators. PCBs make good coolants, lubricants, and insulators for electrical equipment of all kinds. They are known to cause cancer in animals and are probable human carcinogens, but exposure tends to be limited to people who worked in the electrical industry many years ago, lived close to manufacturing sites, and/or ate contaminated fish. Health effects also include acne-like skin conditions and neurobehavioral and immunological changes in children. https://healthymaterialslab.org/tool-guides/hml-resources

Small particles of pollution that get into the air when fuel is burned. PAH are carcinogenic. They are generally inhaled and can also enter the body when eating charred or blackened food. https://healthymaterialslab.org/tool-guides/hml-resources

Construction using large-diameter log poles in a vertical position to carry the loads of the floors and roof.

One of a class of bromine-containing organic chemicals used as flame retardants. https://healthymaterialslab.org/tool-guides/hml-resources