A Change of Unifold Joint Practice • 27 March 2009
In line with our policy of continuous improvement to our Unifold system we introduced a change to joint fixing from 1st April 2009. It was the practice to drill and rivet Unifold sections together via the butt strap following the application of joint mastic to the butt strap. A 4.2mm diameter low profile head drill screw was been brought to our attention as an improvement in speed and application over the use of drill bits and rivets and several contractors tried these with great success. Following this lead we further trialed these screws and found an improvement in speed of application of more than 50% over drill bits and rivets with, we believe, an improvement to joint strength and integrity. These new fixings were issued with all consignments from the above date together with P2 bits at the rate of one bit per 250 screws.
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