Lightweight Concrete Roof Deck

Lwic can be placed atop any of the above mentioned concrete deck types or directly upon a properly supported corrugated steel.

Lightweight concrete roof deck.

These roofs used bead adhesives to construct the roof assembly. Picture story of gypsum roof deck repair sequence. Vermiculite concrete is highly adaptable for concrete roof systems. Thereafter precast systems are commonly topside insulated below the roof cover using adhered insulation panels or cast in place lightweight insulating concrete.

Vermiculite for roof decks can be placed over various kinds of form boards fiber fiberglass acoustical and asbestos cement as well as over paper back wire lath. Low density insulating concrete roof decks are monolithic composite systems cast over galvanized metal decks structural concrete wood decks or existing roof systems. The steel deck panels are embossed in a manner which when filled with concrete. With standard structural concrete the aggregate used is sand and stone.

Structural concrete composite deck. Lightweight insulating concrete decks non structural low density lightweight insulating concrete lwic can be placed upon a variety of structural deck systems that have been designed to carry loads. The most common use of vermiculite lightweight concrete is for light structural roof decks and for insulation fill over metal decking and structural concrete. However when a lightweight structural concrete lwsc roof deck is poured in place it uses significantly more water.

Nrdca 300 procedures to determine the accuracy of material measuring equipment for lightweight insulating concrete. 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. Serd was originally founded as southeastern roof decks in 1963 and for 50 years primarily specialized in lightweight insulating concrete roof deck systems. No vapor retarders were used.

The lighter the concrete the better lower the k factor. Repaired areas exposed to high temperatures direct sunlight or extremely windy conditions should be lightly misted with water or covered with damp burlap for 24 hours. Nrdca gypsum roof deck repair replacement procedure. Lwic can be placed atop any of the above mentioned concrete deck types or.

Lightweight roof deck concrete is self curing under most conditions. Nrdca 600 guideline for application of cementitious wood fiber roof deck systems. Serd is a specialty subcontractor providing lightweight insulating concrete roof decks metal decking tectum acoustical roof deck panels engineered fills and material sales. However moist curing is preferable.

The normal weight concrete employs standard aggregates i e. Underlayment systems gypsum soundmat floor leveling cell crete has been california s floor system expert for over 40 years. Lightweight insulating concrete decks. The end result of the structural lightweight mix is a deck that can be 20 25 lighter than standard structural concrete.