They may also use Specific weld pins with integral-cupped head washers. Unfaced boards can then be completed with reinforced insulating cement, canvas, or weatherproof mastic. Faced boards might be put in in exactly the same way, as well as joints amongst boards sealed with stress-delicate tape or glass fabric and https://freeecogrants.co.uk/how-to-apply-for-solar-panel-grants-scotland/