Coving size match Ask your questions and find answers on many subjects relating to plastering and dry lining

[diymum]

I have a piece of missing coving to replace due to reorganising a door opening. I do not know whic bit of existing coving to measure in order to find a match. Is it the diagonal or the straight edge? It easures 3.75 inches on the straight edge and marginally under 5 inches n the diagonal.
Locl diy suppliers do not seem to have that size.

[kbrownie]

if you can just put a bit of board across section draw a template of it and take that to merchant to insure you get correct size
kb

[rosebery]

Coving comes in two sizes. 100mm and 127mm. 3.75" is too small for 100mm but 127mm and 5" are spot on the same size.

Its a reasonable expectation therefore that you want 127mm coving. You won't get less than a 2m length but heres the real issue. The curve of the profile will vary from manufacturer to manufacture so you may not get an exact match.

So KBs advice to make a template is a very good plan.

Cheers