Putting up Coving a DIY Guide to Cutting Coving and Mitre Mitre box (also called a mitre block) or you can use a mitre saw or a coving mitre template as a cutting guide such as a Wonder Mitre (see below) Adhesives – You can use any coving adhesive, either ready-mixed or powder adhesive which you mix yourself. You can also use a silicon based adhesive and sealant gun; Pencil[PDF] Gyproc Cove 127 - british-gypsum Mitre templates These templates are designed to help you create mitred corners for Gyproc Cove 127. You will need both templates to cut internal and external angles and all the instructions are contained within them. To use, cut carefully around the outside edge of each template. Wickes Coving Mitre Tool For 127mm Coving | Wickes Buy Wickes Coving Mitre Tool For 127mm Coving online at Wickes. We supply trade quality DIY and home improvement products at great low prices.