What is a backing strip?Updated a month ago

You do not have to use backing strips but we do recommend them. A backing strip is a PVC strip of plastic (2495 x 50mm) that you fold into a right angle and then fit into the corner of the room with the HG adhesive on the back. Then use your spirit level to ensure that it's plumb. Once the backing strip has set you can then fit the panels over the top of it. The backing strip means that you do not have to trim the panels to fit the wall and once the first panel is on the wall plumb, then it's easy to panel around the rest of the room. The backing strip is also an extra protection in the corners to ensure there are no leaks.