They may also use Specific weld pins with integral-cupped head washers. Unfaced boards can then be concluded with bolstered insulating cement, canvas, or weatherproof mastic. Confronted boards may be set up in a similar way, and also the joints amongst boards sealed with force-delicate tape or glass cloth and mastic. https://freeecogrants.co.uk/benefits-of-collaborating-with-an-agency-for-applying-for-eco-grants/