They may also use Specific weld pins with integral-cupped head washers. Unfaced boards can then be concluded with strengthened insulating cement, canvas, or weatherproof mastic. Confronted boards might be installed in the same way, as well as the joints concerning boards sealed with strain-delicate tape or glass fabric and mastic. https://freeecogrants.co.uk/steps-to-insulate-your-uk-property/