They can also use Unique weld pins with integral-cupped head washers. Unfaced boards can then be concluded with strengthened insulating cement, canvas, or weatherproof mastic. Faced boards could be mounted in the exact same way, and also the joints concerning boards sealed with strain-delicate tape or glass fabric and mastic. https://freeecogrants.co.uk/what-are-the-factors-to-check-before-applying-for-the-free-insulation-grant/