Just came to lay some new floorboards from Wickes and discovered they're a different thickness to what's there. New are nominally
18mm, old are 19.4mm. (Is that 3/4 inch in old money?) It doesn't sound like much but it does seem noticeable. Also the tongues and grooves are centrally located on the old but offset on the new so they don't mesh.Are other depths of floorboards still generally available at reasonable prices, maybe at timber merchants such as Lavers rather than DIY stores? I don't fancy trying to shim them all or split off the tongues.
Thanks in advance for any info.