Start with the building
Determine what the existing structure can support and how the outdoor space will be accessed. A balcony, roof terrace and elevated garden deck can involve different assemblies and design responsibilities.
Keep water management visible in the plan
Ask for the membrane, slope, drainage, door threshold and penetration details to be coordinated. Plan access for maintenance beneath pavers or other removable surfaces, where applicable.
Select the surface after the assembly
Pedestal pavers, approved deck-board systems and walkable membranes create different looks. Choose within the options that work with the complete structural and waterproofing design, and review guards and privacy needs.
Questions worth asking
Can I turn any flat roof into a deck?
No. It requires review of the structure, access, waterproofing, guards and applicable approvals.
Can deck boards waterproof a balcony?
Ordinary open-joint boards do not waterproof the building below. A suitable complete assembly is required.


