Lightweight Concrete Roof Decking

Lightweight insulating concrete low density non structural concrete comprised using ultra lightweight expanded mineral aggregates or preformed foam.

Lightweight concrete roof decking.

The use of lightweight concrete as a roof decking and insulation system has expanded in the past five years. The increase can also be attributed to the economic and environmental advantages that lightweight insulating concrete lwic provides in roof assemblies. The addition of insulation board increases r values and reduces dead load. 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.

The reduced quantity of concrete and steel reinforcement offsets the marginally higher cost of lightweight concrete floor systems. Aerix insulating concrete provides a superior lightweight concrete roof surface compared to rigid board insulation systems. The lighter the concrete the better lower the k factor. These floors are constructed for different purposes but the reduction of dead loads on the structure is.

However when a lightweight structural concrete lwsc roof deck is poured in place it uses significantly more water. Dektek tile is an elegant and innovative precast concrete decking material that is especially designed for elevated decks and roof decks. Hard rocks with a low water absorption rate and weighs approximately 2403 kg m 3 150 lb cf. Lightweight insulating concrete lwic is defined as having oven dry unit weights of 50 lbs ft or less.

Vermiculite for roof decks can be placed over various kinds of form boards fiber fiberglass acoustical and asbestos cement. With standard structural concrete the aggregate used is sand and stone. It is adaptable to any roof configuration and depending upon the condition of the existing roof may be installed directly to build up roofs gravel roofs and galvanized steel deck roofs thus eliminating costly tear. The concrete deck tiles are 1 thick and weigh approximately 10 5 lbs per.

Dektek s luxury tile decking is custom poured high strength concrete deck tiles that support more than 1 000 lbs per tile. Aerix insulating concrete for a superior roof. Lightweight concrete floor provides more efficient strength to weight ratio in concrete floor systems when compared to other conventional concrete floor systems. Installed over precast cast in place concrete or galvanized steel decking.

Usg s structural panel concrete roof deck can be applied with mechanical fasteners to serve as a structural substrate for direct mechinically or adhesive applied roof systems. Structural panels concrete roof deck is an innovative technology designed to provide a structural roof sheathing without the need for thermal barriers pouring. The most common use of vermiculite lightweight concrete is for light structural roof decks and for insulation fill over metal decking and structural concrete. The normal weight concrete employs standard aggregates i e.

The end result of the structural lightweight mix is a deck that can be 20 25 lighter than standard structural concrete.