MF1 is a vapour open lightweight mineral based filler specially designed to deal with problematic historic plaster. It can fill hairline cracks or large deep fill patches alike while remaining vapour open. MF1 can also be used as a light duty adhesive and to repair or reattach loose plaster or details. Use PS1 prior to application for additional bond strength, in particular if using as a light duty adhesive. The Silic8 range is the only range on the market to be independently tested for vapour diffusion to reassure you that water vapour is not trapped in the fabric of your building.

Some typical substrate types: Most mineral and masonry backgrounds, magnesium silicate boards, historic or new plasters (lime, cement or gypsum), wood, and wood type boards, terracotta and some ceramic tiles and paints

Coverage: The surface must be sound and dry. Where the surface is powdery or friable, use PS1 prior and work the primer in to the affected areas with a brush and test for bond strength after 24 hours.

Ensure that surrounding surfaces are protected, particularly glass. Wash splashes, tools and brushes with water. Do not store or use in extremes of temperatures (<5 or above 30C). If splashed on the skin wash off immediately with water. Wear the appropriate Personal Protective Equipment; Refer to the Safety Data Sheet before use (see download link below)

The primer can be plastered after 24 hours. Ensure that the plaster is appropriate to the task.