300ml Brown Building Mastic

Build-Mate Building MasticA traditional oil based, gunable pointing and sealing mastic for general exterior building use. Offers superior adhesion to all building surfaces and can be over-painted when cured with most conventional oil based paints. Weatherproof in most applications. Sag resistant and low toxicity. Can be used to seal and bed window and door frames manufactured from metal or wood. It can also be used for the maintenance of low rise building joints, seals and flashing and for pointing around precast building materials. Note: Not suitable for use with uPVC.