A horizontal slot in a wall into which flashing or counterflashing is inserted.
A roofing membrane that has been strengthened by the addition or incorporation of one or more reinforcing materials.
The highest point on a roof, represented by a horizontal line where two roof areas intersect.
A small structure located behind the higher side of a chimney to divert rainwater around it.
An outlet in the wall for drainage of water from a flat roof.
A joint or gap where two roofing elements join together.
The boards or sheet materials that are fastened to rafters to cover a house or building.
A small, thin piece of building material used for covering roofs.
A fine-grained rock used for roofing.
The number of inched of vertical rise in a roof per 12 inches of horizontal distance.
