I have in the past seen "grooved" MDF sheet, which when painted has the
appearance of Tongue & Groove panelling...and I want to purchase eome.
Local Wickes and B&Q cannot assist.
Q: Does this stuff have a correct name? If so what's it called?
I intend to call around a few traditional timber yards/builders merchants
later....and it's always better to sound as if you know what you're talking