They also can use Distinctive weld pins with integral-cupped head washers. Unfaced boards can then be finished with bolstered insulating cement, canvas, or weatherproof mastic. Confronted boards could be put in in precisely the same way, and the joints amongst boards sealed with tension-sensitive tape or glass fabric and mastic. https://freeecogrants.co.uk/how-to-install-solar-in-your-house/