Tiling Backer Board fixing washers We manufacture and stock these fixings in the UK. We sold over 5 million worldwide last year! Our washers are specifically designed to fix tiling and other boards to walls and floors. They are coated in a galvanized finish to protect them from corrosion/deterioration and conform to industry standards They are compatible with Marmox / Wedi / Aquapanel / Thermopanel / Duccaboard / Celotex / Plasterboard / Insulation board / can be used as a general purpose large washer. Made in the UK!