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Low-profile deck over concrete

Budding Contributor
Budding Contributor

A Merbau deck built over a concrete slab and pavement in an alfresco area.





The project


I built a 90 x 19mm Merbau deck over a concrete slab and pavement in my alfresco area. The maximum height I was able to build the deck was 9.5cm as I could not cover the weep hole in the wall. The main issue I had was building over the concrete pavement since it had a 70cm slope over 1m. I used 70 x 45mm treated Pine for the joists in the slab area and 90 x 45mm and 140 x 45mm treated Pine in the pavement area.


An issue to overcome was the brick pillar supporting the roof as I needed a way to nail the decking against the post. I overcame this by creating a frame that surrounded it. The decking then had an easy attachment point. To give a pleasant finishing touch, while concealing the ends of the decking boards, I created a picture frame to enclose the entire deck.


Before and after






How to build a low-level deck


A low-level deck can pose a range of potential design and installation problems, with particular challenges around ventilation, drainage, termites and rotting. But it doesn't have to be a difficult project once you take the time to understand the basics of how they are put together.


Experienced Bunnings Workshop member Adam Woodhams has created a comprehensive guide to building your own low-level deck which should provide an excellent reference for getting started. 


More inspiration for your deck


Whether you are building a new deck or rejuvenating an existing one, get inspired by the clever and creative Bunnings Workshop community in our Top 10 most popular deck projects.


Why join the Bunnings Workshop community?

Workshop is a friendly place to learn, get ideas and find inspiration for your home improvement projects