a continuous metal strip, or angled piece, used to secure metal components (also see Clip).
Tag: construction
Coated Base Sheet
A coated felt intended to be used as a base ply in a built-up or modified bitumen roof membrane.
Code
A collection of laws (regulations, ordinances or statutory requirements) adopted by governmental authority. (see Building code and Model code.)
Construction Joint
(1) a joint where two successive placements of concrete meet; (2) a separation provided in a building which allows its component parts to move with respect to each other.
Coping
The covering piece on top of a wall exposed to the weather, usually made of metal, masonry, or stone and sloped to carry off water.
Course
(1) the term used for a row of roofing material that forms the roofing, waterproofing or flashing system; (2) one layer of a series of materials applied to a surface (e.g., a five-course wall flashing is composed of three applications of roof cement with one ply of felt or fabric sandwiched between two layers of roof cement).
Cover Plate
A metal strip sometimes installed over or under the joint between formed metal pieces.
Expansion Cleat
A cleat designed to accommodate thermal movement of metal roof panels.
Expansion Joint
A structural separation between two building elements that allows free movement between the elements without damage to the roofing or waterproofing system.
Fastener
Any of a wide variety of mechanical securement devices and assemblies, including nails, staples, screws, cleats, clips and bolts, which may be used to secure various components of a roof assembly.
Feathering Strips
Tapered wood filler strips placed along the butt ends of old wood shingles to create a relatively smooth surface when reroofing over existing wood shingle roofs. Referred to in some regions of the country as “horse feathers,” or leveling strips.
Ferrule
A metal sleeve placed inside a gutter at the top. A spike or screw is nailed/screwed through the gutter face and ferrule into the fascia board to hold the gutter in place. The ferrule acts as a spacer in the gutter to maintain its original shape.
Flashing
Components used to weatherproof or seal roof system edges at perimeters, penetrations, walls, expansion joints, valley, drains and other places where the roof covering is interrupted or terminated. For example, membrane base flashing covers the edge of the field membrane, and cap flashings or counterflashings shield the upper edges of the base flashing.
Flood Test
The procedure in which a controlled amount of water is temporarily retained over a horizontal surface to determine the effectiveness of the waterproofing system.
Foam Stop
The roof edge treatment upon which SPF is terminated.
Girt
A horizontal beam that supports wall cladding between columns.
Gravel Stop
A flanged device, frequently metallic, designed to prevent loose aggregate from washing off the roof and to provide a continuous finished edge for the roofing.
Groundwater Level
At a particular site, the level, below which the subsoil and rock masses of the earth are fully saturated with water.
Gusset
used at the bottom of a steep-slope roof system valley, a large flat metal piece(s) wider than the valley to help prevent build-up at the base of the valley, either from debris or ice dam formations.
Nailer
A piece or pieces of dimensional lumber and/or plywood secured to the structural deck or walls, which provide a receiving medium for the fasteners used to attach membrane or flashing.
Sometimes called Blocking.