Priming sealing before painting or rendering.

FireCrunch must always be primed, undercoated and finished regardless of where or how it is used, however this is particularly important in areas of high humidity. Extra care must be taken to ensure the board is sealed correctly on the face, top and exposed edges, leave the inner back rough side of board unsealed. Use smooth side to paint.

All FireCrunch MgSO₄ composite fire boards must be pre-sealed with Murobond MP primer. Failure to use this product before painting or rendering will void the warranty. Available direct wholesale from FireCrunch (Ask us).

FireCrunch will not attract mould or mildew and bacteria cannot survive on (MgSO₄).

Correct preparation and sealing will ensure a long life for your building.