The westford ma based national roof deck contractors association has published guidelines for rehabilitation of old gypsum decking.
Lightweight concrete roof deck panels.
Nrdca 250 field quality control procedures for application of insulating concrete roof deck systems.
Nrdca 300 procedures to determine the accuracy of material measuring equipment for lightweight insulating concrete.
Structural concrete composite deck a supported steel panel deck system filled with normal weight or structural lightweight concrete.
The steel deck panels are embossed in a manner which when filled with concrete.
What are the different types of concrete roof decks.
Installed up to 48 on center over cold formed steel framing 1 4 bar joists or wood framing to create 1and 2 hour fire rated roof ceiling assemblies.
The light weight is achieved through use of expanded aggregates such as perlite or vermiculite air entrainment or both.
Lwic decks provide high r values increased fire and wind ratings and a built in air barrier increasing the overall performance of the building envelope.
Lightweight insulating concrete decks.
Serd is a specialty subcontractor providing lightweight insulating concrete roof decks metal decking tectum acoustical roof deck panels engineered fills and material sales.
Serd was originally founded as southeastern roof decks in 1963 and for 50 years primarily specialized in lightweight insulating concrete roof deck systems.
Cellucrete has established itself as the leader in the lightweight insulating concrete industry with a proven track record of high quality installations throughout the southeast united states.
Beneath the roof cover structural concrete roof decks are commonly topside insulated using adhered insulation panels or cast in place lightweight insulating concrete.
Structural concrete composite deck.
With structural lightweight concrete a mix of shale slate slag and clay are used and with this mix the aggregate is fully saturated prior to mixing.
Nrdca gypsum roof deck repair replacement procedure.
The only cementitious structural panel approved by factory mutual fm fm approval standard 4472.
Lightweight insulating concrete lwic is batched on site and used to encapsulate expanded polystyrene insulation to provide permanent roof insulation and slope to drain.
Dektek tile is an elegant and innovative precast concrete decking material that is especially designed for elevated decks and roof decks.
Unlike traditional roofing systems where multiple layers are required concrete roof deck is both the noncombustible structural sheathing and either the nail base or thermal barrier.
The steel deck panels are embossed in a manner which when filled with concrete allows the elements of the construction to respond to load as a single unit.
Lwic can be placed atop any of the above mentioned concrete deck types or.
Dektek s luxury tile decking is custom poured high strength concrete deck tiles that support more than 1 000 lbs per tile.
The end result of the structural lightweight mix is a deck that can be 20 25 lighter than standard structural concrete.
