Raising garden to deck level, drainage? Post your questions and find answers on all garden related topics and areas

[Kevlar86]

Hi, first time poster.
I recently had a large composite deck put down. It was put on top of a concrete patio and dirt after extention was completed. Was done by professional and is a good job. Now I'm want to landscape the garden and turf the lot. Quotes are mental so giving it a go myself.

My question is, my current garden is grass and slab patio that slopes left to right as you look at it, if I fill it in and level the lot, using sleepers as edge retaining wall. Will water pool underneath my deck causing rot. (Gardeners have suggested type 1 before soil if that helps) photo attached.

[stoneyboy]

Hi kevlar86
Assuming the whole of your new deck was constructed using composite decking and joists rot should not be an issue.
Regards S

[Kevlar86]

Thanks for the reply. The decking is composite yes. But the frame underneath is treated timber 4x2 and 6x2. With a weed garden underneath them ontop of existing concrete patio, with gaps and sand under it???