Both...neither...well both really. As the whole house is a new build I would definately definately put a raised (suspended) concrete slab in at build stage, for several reasons, but principally for any future change to a tiled or sandwashed finish. We put a solid, sturdy wood deck in the garden when building our house...it's concrete and sandwash now!! But maybe these man-made products are far more durable all round though.buksida wrote:Also thoughts on terrace support, using wood beams or concrete
Any concrete slab will probably just be part of your main house floor slab, and looking at your plans you've already got support columns going through the terrace area for the roof. The extra over cost against what you would have put in will probably be under 20k or even less, which'll seem like a bargain in 18 months when you rip the decking out

Seriously though, as it's an area you'll be living on a lot, scraping chair legs accross etc, I think decking might feel a bit hollow/creaky/echo'ey if you know what I mean, and if you do end up happy with whatever decking you put down, it'll have a solid, maintenance-free base that you can forget about, rather than a more involved affair with cross-members and the like potentially deteriorating. This way should the decking rot one day and implode while you're having a big party, at least you and your guests will only crash down two inches

Don't know these products in any detail so can't comment, but this website is excellent and seems to have every building related material, plant or service known to man....
-- Main Website for Thaibuild.com --
> Section for 'real wood decking' products/suppliers
> Section for 'wood-plastic composite' (WPC) products/suppliers
> Section for 'wood-cement based' products/suppliers
> Details for 'Shera & Conwood'. Conwood's 3no. deck products all seem to be 2.5cm thick
SJ