Stopgap 1100 Gypsum - Smoothing Compound

STOPGAP 1100 GYPSUM is a self-levelling smoothing underlayment. STOPGAP 1100 GYPSUM is dimensionally stable and is supplied as a pre-blended dry powder, which is designed for application between 2–10 mm. It is protein-free which allows it to be used in biologically sensitive areas such as hospitals.

STOPGAP 1100 GYPSUM is calcium sulphate based and is particularly compatible for smoothing and levelling similarly constructed screeds.

STOPGAP 1100 GYPSUM can be pump applied up to 1500 m² per day, dependent upon manpower, thickness applied and equipment used.

Priming:

• IT IS ESSENTIAL TO PRIME ALL SURFACES.
• Absorbent surfaces - For dry (<75% RH) and suitably prepared calcium sulphate screeds, prime with two coats of STOPGAP P121. The first coat should be diluted one part primer to one part water. Once dry, prime with a second coat of neat P121. For all other absorbent surfaces prime with dilute STOPGAP P131 to prevent rapid drying of the underlayment.
• Non-absorbent surfaces – such as sound flooring grade asphalt, minimal adhesive residues, terrazzo, quarry tiles and STOPGAP waterproof surface membranes should be primed with neat STOPGAP P131 to ensure that good adhesion is obtained between the underlayment and substrate.
• Primers should be used in accordance with instructions printed on the bottle and must be allowed to dry before applying the smoothing underlayment.