Type A Roof Decking
On average 300 sq ft.
Type a roof decking. This is usually 2 6 with a tongue formed on one edge of the board that fits snugly into the groove in the board adjacent to it. Although type f improved upon the strength to weight ratio of narrow rib a roof deck it is still less efficient than type b wide rib roof deck as with all steel products the lighter the section the more economical it will be and since f deck cannot carry as. This is usually because low quality leak prone decking materials such as epdm rubber are used often in an effort to save money. Of roof decking costs 800 2 800 to install depending on the material you choose.
Plywood or osb sheathing. Check with local codes to make sure this type of metal deck roof is allowed where you live. Thickness of a steel roof deck can be determined at a roof hatch where the edge of the deck may be available for measurement with a micrometer. Unfortunately many homeowners who have a flat deck roof have to deal with frequent leaks.
What is tongue and groove decking. It is a challenge to replace this type as it is not readily. We all know the different types of roofing material asphalt wood metal etc but there s one type of roofing material that s just a bit different than the rest. There are three types of wood roof decks.
Type f intermediate rib roof deck is rarely used for new construction projects but is often needed for repair and re roof projects. The thickness of plywood used for roof decking depends on the roof slope the spacing of rafters and the weight of other material to be put over the decking as well as the design load the. Designed for the modern outdoor space this metal pergola adds shade over an existing deck or patio. Although it s a waterproof roofing material it has an extra quality.
Type f roof deck is a 1 1 2 deep intermediate rib metal roof deck that provides an economical roofing system of structural load carrying capacity and roofing insulation materials. It comes with a canopy that can be retracted. Roof deck products act alone in transferring horizontal and vertical loads into the building frame and do not work compositely with other building materials. In that case a pullout test device can confirm adequacy.
These correspond to design thicknesses of 0 0598 0 0474 0 0358 and 0 0295 respectively while metal deck can be produced in any material thickness between 16 and 22 defining an odd or special gauge will make the deck much more. Flexural strength can be assumed to be 33ksi unless a new single ply system is contemplated that requires a higher pull out strength. Type a roof deck is most readily available with material thicknesses defined by the even gauges 16 18 20 and 22.