Lightweight Concrete Roof Deck Repair

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

Lightweight concrete roof deck repair.

Provides lightweight insulating concrete systems for roof decks engineered fill applications and floor fill installations. The nrdca is developing industry consensus guidelines and quality control procedures for the application of systems represented by association members. Exceptional strength excellent fire performance and the versatility to patch many decks such as gypsum roof decks. The documents represent an industry consensus on the subjects of application quality control and repair or replacement of various roof deck systems.

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. Formerly known as pyrofill gypsum concrete securock brand gypsum concrete patch is a high performing gypsum patch solution that delivers a professional finish on a variety of poured roof decks. 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. Flexcrete s monolite is a lightweight high build polymer modified mortar for the repair rendering and profiling of concrete brick or stone substrates.

Nrdca guidelines and procedures. 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.