They also can use special weld pins with integral-cupped head washers. Unfaced boards can then be finished with reinforced insulating cement, canvas, or weatherproof mastic. Faced boards may be mounted in a similar way, and the joints among boards sealed with force-delicate tape or glass fabric and mastic. Weatherization and https://freeecogrants.co.uk/tips-for-insulating-your-wales-home/