Washer 1 - RW5 and RW18 The washers are 46mm diameter, manufactured from high strength Nylon. Two versions are available, short stem with 5mm recess and long stem with 18mm recess. Washer 2 - RW35 and RW65 This product’s longer length recess allows the fixing to retain the thicker insulation types being used in today’s construction industry Washer 3 - ECW60 The washer head is 60mm in diameter and with its additional sealing cap provides additional cold bridging protection. For customer convenience we offer four differing types of retention washer, some with more than one length. 48 INSULATION FIXINGS INSULATION RETAINING WASHER Insulation Retaining Washer Designed For: For securing insulation to timber and sheet steel when used with Evolution drywall, ETKR etc Designed For: For securing insulation to timber and steel sheet when used in conjunction with Evolution screws Colour: Black ✓ Evolution Insulation retaining washers are used in conjunction with different screw types to secure PIR insulation to timber, steel and masonry ✓ All of the washers have a recessed mounting point for the screw head, this ensures that the screw head is well below the surface, reducing cold bridging ✓ UV stable polypropylene washer to secure PIR insulation ✓ Recessed hole to allow flat surface finish ✓ 5 radial holes for render keying Polyproylene washer