Lightweight Concrete Roof Deck Repair

Flexcrete s monolite is a lightweight high build polymer modified mortar for the repair rendering and profiling of concrete brick or stone substrates.

Lightweight concrete roof deck repair.

The nrdca is developing industry consensus guidelines and quality control procedures for the application of systems represented by association members. However moist curing is preferable. Exceptional strength excellent fire performance and the versatility to patch many decks such as gypsum roof decks. 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.

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. The documents represent an industry consensus on the subjects of application quality control and repair or replacement of various roof deck systems. Our recommendations when structural lightweight concrete decks are going to be installed is to either install a ballasted roofing assembly or to install a vapor barrier directly over the structural lightweight deck and then mechanically fasten at least one layer of roof insulation to the deck. Lightweight roof deck concrete is self curing under most conditions.

The most common use of vermiculite lightweight concrete is for light structural roof decks and for insulation fill over metal decking and structural concrete. Nrdca guidelines and procedures.