Lightweight Concrete Roof Decking

Lightweight insulating concrete lwic is defined as having oven dry unit weights of 50 lbs ft or less.

Lightweight concrete roof decking.

The normal weight concrete employs standard aggregates i e. The use of lightweight concrete as a roof decking and insulation system has expanded in the past five years. The lighter the concrete the better lower the k factor. Structural panels concrete roof deck is an innovative technology designed to provide a structural roof sheathing without the need for thermal barriers pouring.

Lightweight roof deck concrete is a one component lightweight insulating concrete ideal for roof fills and for providing slope. Aerix insulating concrete for a superior roof. Aerix insulating concrete provides a superior lightweight concrete roof surface compared to rigid board insulation systems. Compressive strengths from 125 350 psi are common for lwic used in roof deck.

The addition of insulation board increases r values and reduces dead load. Dektek tile is an elegant and innovative precast concrete decking material that is especially designed for elevated decks and roof decks. 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.

The most common use of vermiculite lightweight concrete is for light structural roof decks and for insulation fill over metal decking and structural concrete. Vermiculite for roof decks can be placed over various kinds of form boards fiber fiberglass acoustical and asbestos cement. Increased usage can be attributed to the recent industry wide insulation shortages and delamination deficiencies. 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.

With standard structural concrete the aggregate used is sand and stone. These floors are constructed for different purposes but the reduction of dead loads on the structure is. The reduced quantity of concrete and steel reinforcement offsets the marginally higher cost of lightweight concrete floor systems. Lightweight insulating concrete low density non structural concrete comprised using ultra lightweight expanded mineral aggregates or preformed foam.

However when a lightweight structural concrete lwsc roof deck is poured in place it uses significantly more water. 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. 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. Hard rocks with a low water absorption rate and weighs approximately 2403 kg m 3 150 lb cf.

The concrete deck tiles are 1 thick and weigh approximately 10 5 lbs per.