Mastablock

Mastablock is a pink plasterbased setting cement designed specifically for back-blocking ceiling joints in accordance with AS 2589.1. Back-blocking reinforces the joint, minimises deformation and possible cracking that may occur due to stresses from building movement. Mastablock has a working time of 3.5 hours and sets in 4 hours, allowing plenty of time to complete back-blocking and maximise use of a single gauge.

Great for skillion roofs as ceiling joints can be back-blocked progressively, working from below the board.

Mastablock mixes easily by hand or electric mixer to a smooth gauge, providing a strong bond between back-block and plasterboard lining.