Fast drying self-levelling smoothing underlayment suitable for use in light to heavy-duty areas.
STOPGAP 300 is a fast drying self-levelling smoothing underlayment suitable for use in light to heavy-duty areas for preparing sound absorbent and non-absorbent subfloors prior to the installation of new floorcoverings.
STOPGAP 300 is dimensionally stable and is supplied as a pre-blended dry powder designed for application between 2 - 20mm. It is protein-free which allows it to be used in biologically sensitive areas such as hospitals.
STOPGAP 300 is suitable for use over a wide range of subfloor types including sand/ cement screed, concrete, calcium sulphate (e.g. anhydrite), minimal adhesive residues, sound asphalt,granolithic, terrazzo, epoxy and polyurethane resins, ceramic and quarry tiles and STOPGAP waterproof surface membranes.
IT IS ESSENTIAL TO PRIME ALL SURFACES.
Absorbent surfaces - Prime with dilute STOPGAP P131 to prevent rapid drying of the underlayment.
For dry (<75% RH) and suitably prepared calcium sulphate screeds, prime with two coats of STOPGAP P121. The first coat should be diluted 1 part primer to 1 part water. Once dry, prime with a second coat of neat STOPGAP P121.
Non-absorbent surfaces – such as sound 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.
M10/160 Proprietary self smoothing levelling screeds
M10/7 Proprietary quick drying levelling screeds
M40/460 Smoothing underlayment
M42/10 Wood flooring
M42/110 Wood block flooring
M42/120 Mosaic parquet panel flooring
M42/150 Composition block flooring
M42/20 Composition block flooring
M51/150 Carpeting for stairs
Stopgap 300 HD
Compressive strength (N/mm², to EN13892-2):
Flexural strength (N/mm², to EN13892-2):