Classic C-shaped Polystyrene Internal & external Coving corner (L)180mm (W)100mm, Pack of 2

This product is not fit for purpose. The idea of these corners is to save on cutting but THEY ARE NOT 45 degrees. Unless your walls are way out, these are no good for you. We had to return this product and cut the straight coving ourselves. a mitre block and saw will do the trick!!

Having done coving before with preformed corners some years ago; I wanted to do same in a recent extension. The 100mm deep straight polystyrene had improved - very smooth surface; no poly bubbles to cover with paint! Disappointed the 2 pk internal/external corners; you can only use the 2 pieces to make 1 corner; cutting them in half; the other ends for external now wasted/not needed - expensive! They are not true 45 degree cut; had to shave edge One side to fit; the curve not quite matching the lengths so a lot of shaving/filling - my husband nearly made me give up and take back what we hadn’t used.

Bought these as working to a budget. No two pieces were the same with the manufactured cuts all being at different angles. Eventually managed to get them to fit (with a lot of filling, sanding and fettling). The straight lengths are great for the price but these were just more trouble than they were worth.

While using ordinary Coving for an Expert doing the corners with Straight pieces is probably easy but a for normal Diyer is or can be a expensive mistake to make. These Corner pieces come in 2 versions in a pack. Look good when up and finish the work nicely.

Absolutely awful product that just doesn't match the coving it's designed to go with. Looks terrible and I'm still yet to rip it all down and start again with a product from elsewhere