Press "Enter" to skip to content

Roofing Parts and Terminology

Parts of a Roof / Roofing Terminology

Created-up Roof
A minimal-slope (or flat-seeming) roof lined with alternating layers of roofing felt and warm-mapped asphalt and topped off with a layer of gravel.

Cornice
The part of the roof projecting out from the aspect partitions of the house.

Counterflashing
The flashing which is imbedded at its top rated in a wall or other vertical composition and is lapped down around shingle flashing.

Classes
Horizontal rows of shingles or tiles.

Deck/sheathing
The surface area, ordinarily plywood or oriented strand board (OSB), to which roofing resources are applied.

Dormer
A smaller composition projecting from a sloped roof, ordinarily with a window.

Drip Edge
An L-shaped strip (ordinarily steel) mounted along roof edges to allow for h2o run off to drip apparent of the deck, eaves and siding.

Eaves
The reduce edge of a roof (ordinarily overhanging further than the edge of the house).

Fascia
Trimboard powering the gutter and eaves.

Felt
The “tar paper” made use of by roofer, ordinarily built of a mixture of asphalt and possibly paper or rags.

Hearth Ranking
Procedure for classifying the fire resistances of different resources. Roofing resources are rated Class A, B or C, with Class A resources acquiring the greatest resistance to fire originating outside the house the composition.

Flashing
Sheet steel or other content made use of at junctions of different planes on a roof to stop leakage.

Frieze Board
A Board at the top rated of the house’s siding, forming a corner with the soffit.

Gable
The triangular higher component of a wall closing the conclude of a ridged roof.

Hip
The external angle at the junction of two sides of a roof whose supporting partitions adjoin.

Joist
In a flat roof, a horizontal structural member around which sheathing is nailed.

Louvers
Slatted gadgets mounted in a gable or soffit (the underside of eaves) to ventilate the space underneath a roof deck and equalize air temperature and dampness.

Oriented strand board (OSB)
Roof deck panels (4 by eight feet) built of slim bits of wood, mounted lengthwise and crosswise in layers, and held jointly with a resin glue. OSB frequently is made use of as a substitute for plywood sheets.

Penetrations
Vents, pipes, stacks, chimneys-nearly anything that penetrates a roof deck.

Rafter
A structural member (ordinarily slanted) to which sheathing is nailed.

Rake
The slanting edge of a gabled roof extending further than the conclude wall of the house.

Ridge
The horizontal line at the top rated edge of two sloping roof planes.

Sheathing
The rigid content (frequently on inch by 6 inch or 1 inch by twelve inch boards or sheets of plywood) which is nailed to the rafters, and to which shingles or other outside the house roofing resources are secured.

Shingle Flashing
Flashing that is laid in strips less than just about every shingle and bent up the edge of a chimney or wall.

Slope
The quantity of inched of vertical increase in a roof per twelve inches of horizontal length. Also referred to as pitch.

Soffit
The boards that enclose the underside of that part of the roof which extends out further than the sidewalls of the house.

Square
A single hundred square feet of roof, or the volume of roofing content wanted to include one hundred square feet when correctly applied.

Truss
Engineered factors that complement rafters in several newer households and buildings. Trusses are made for certain purposes and are not able to be slash or altered.

Underlayment
The content (ordinarily roofing felt) laid on top rated of sheathing in advance of shingles are applied.

Valley
The much less-than a hundred and eighty-degree angle the place two sloping roof sections arrive jointly.

Valley Flashing
The flashing in valleys, extending in less than to shingles on both sides.

Vapor Retarder
A content made to limit the passage of h2o vapor by a roof procedure or wall.