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Aye tongue and groove. I think I’ll probably have to bite the bullet and take the skirting off in a couple places. Main problem is that it looks ancient and will likely make a massive mess/disintegrate into pieces when I try and pry it off. And I don’t fancy my chances being able to find stuff to match. It’s about 10 inches tall!
Splitting the bottom of the groove off and glueing sounds good. Was thinking of cutting plugs out of scrap to hide some screws too. I might survive this ordeal after all.
Nef-
And I don’t fancy my chances being able to find stuff to match. It’s about 10 inches tall!
Looks to be torus which is pretty readily available not seen X10 (ten inches tall) torus but x12 isn't too hard to find from a decent lumber yard (i.e. not Wickes or B&Q) so at a push you could buy x12 and rip 2" off it.
Bobbo
To be honest when I fit new flooring I always take the skirting off. I have a irrational hatred of scotia beading
Is the flooring a lap joint or tongue and groove?
If it's a lap joint I'd slather the already fitted side with plenty of good quality waterproof PVA titebond III or similar. If you can get hold of it stuff called Alcolin Professional is a aliphatic resin wood glue which has superior creep resistance so the joint is less likely to fail over time due to movement. Once you've slathered on the glue leave plenty of weight on the join to ensure a good bond.
If it's tongue and groove then rip off the bottom "flap" on the groove and repeat the glue process outlined above. It may be worth ripping a small fillet piece to place under the tongue just in case.