I have had an accident with my garden shed and it now requires some tlc
Three of the panels have smashed (concrete slab fell into it)
I need to source new tongued and grooved shiplap boards 140mm width about 5mm thick
Could anyone suggest a supplier?

b&q

no frills (prob the cheepist)

wikks

pagits

Thanks,
I asked at B&Q and was told it could only be bought at 90mm ,it seems I was given wrong info as the web site shows 137