Vinyl Siding Glossary

225 Oxmoor Circle,

Suite 811

Homewood, AL 35209


(205) 769-9967

FAX: (888) 388-9805





Aluminum Siding
Horizontal planks of aluminum with a baked-on enamel finish
American Society of Testing Materials International
The national trade organization for the manufacturers of hardboard products

American National Standards Institute (ANSI)

ANSI is a private, nonprofit organization that oversees the voluntary standardization and assessment of US products, to enable the US to better compete globally and enhance the quality of life in the US by conformity to product standards
American Hardboard Association (AHA)

ASTM International is a nonprofit organization that helps develop voluntary standards for products, services, materials and systems all over the globe


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Narrow strips of wood placed over joints in vertical wood plank siding to seal the joints

Clapboards that are tapered rather than cut perfectly rectangular
Brick ties

Accordion-type metal fasteners used to attach a brick veneer to the wood framework of a house
Brick Veneer

A wall construction method in which a layer of bricks is attached to the wood framework of a house using brick ties

Located on the bottom edge of a vinyl panel which locks onto the previously installed panel


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Waterproof material used to seal joints at intersections of building components, used with some types of siding

A crack or split along the grain in wood plank siding as a result of cupping

Overlapping, horizontal wood plank siding made from either rectangular planks or taped planks
Composition Board

Blanks or sheets of weather resistant compressed wood fibers used as siding
Course Each row of siding material
Cupping A warp across the board in wood plank siding



Separation of the siding material-veneer or stucco- from its attachment to the house
Double course

An under course of shingles or shakes, not exposed to the weather, is covered completely by a top course


The part of the vinyl panel that is visible once the vinyl is installed

A type of sheet metal used at intersections of building components to prevent water penetration, flashings are commonly used above doors and windows in exterior walls and are used under the siding to prohibit water penetration



A manufacturing component of vinyl or aluminum siding systems which have a curved channel that the planks fit into, used around windows and doors to make a weathertight seal



A steel angle iron or beam over window and door openings that spans the opening and transfers the weight of the masonry to the sides of the opening


Model Building Code

These building codes vary by area of the country and are considered the standard for that area
Moisture Permeable A surface that allows moisture to pass through it


Panel Projection

The amount that a panel of vinyl sticks out away from the wall, you should choose the largest profile for the style of panel you want
Plywood siding

Plywood sheets, some with a grooved or decorative outer surface


Scarfed Joint

Joint used in plywood siding where edges of abutting sheets are angle cut to fit snugly and prevent water penetration
Single course

Wood shingles or shakes applied where each course is exposed to the weather
Spalling Crumbling and falling away of bricks, concrete or blocks

A type of water resistant, plaster like siding material made of cement, sand and water; it may have an acrylic finish


T & G

Tongue and groove, a connection system between components, like wood, in which the tab or tongue of one board is placed into the grove at the end of another board

Social insects that live either in the ground or in wood and eat wood, they can cause serious structural damage to a home


Vinyl siding Horizontal polyvinyl chloride planks

Veneer is one ply or one thickness of something; in siding there are brick and stone veneers, there are also veneers of one wood bonded to another


Wall cladding Another term for siding
Wall sheathing

Sheets of plywood or wood planking used to cover the wall framework of the house
Wind load Pressure
Is a measurement of how well a panel might perform in high wind areas
Wire mesh

A mesh attached to the wall sheathing and studs used to anchor a stucco base coat to the wall
Wood plank siding Rectangular wood planks, installed horizontally or vertically
Wood shakes

Thick, rough, uneven shingles that hand split, split and sawn on one side, or sawn on both sides, used as siding
Wood shingles Sawn shingles that are of uniform thickness

© 2007 BMR Homes, Inc.