Ship-lap cladding for greenhouse?

[Ian White]

Please can anyone point me to sources of T&G "ship-lap" cladding, preferably cedar, for the sides of a greenhouse? Our normally reliable local timber merchant recognises it, but doesn't stock it and can't suggest a source.

The boards to be replaced are nominally 90mm x 10mm overall, with a scoop in the top part of the profile to create a drip edge. The existing boards are T&G jointed, but I'm going to have to replace whole panels so a slightly different profile (eg an overlapping tongue and rebate joint) would be fine.

[sid]

Look up sawmills in yellow pages, or for a more expensive alternative try Wicks. They sell 1.8 metre and I think 2.4 metre. Works out about £1 a metre. That's for 12mm thick.

Sawmill will have anything up to 5.1 metre, usually 22mm and 150mm wide. They just router t&g board so may have 100mm.or 125mm.Normally whitewood but you can sometimes get redwood. For 150mm whitewood look for 60p +vat upwards per metre. They will deliver as 5.1 metre length is a bit much even for a landcruiser.

Cedar may be an option but to me would seem to "over the top" . Just get some wood preservative and spray the lot - try green. Its a nice colour and any algae build up will not show up.