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hello, I’m wanting to do a garden bed between my new retaining wall and pool.
i have about 200mm to fill up to the pool slab. My question is do I need drainage even though there is drainage on the other side of the retaining wall. And then what is the proper process to have a garden bed there white white river rocks on top.
thanks.
Hello @b3ngammin
Your project is a two-step process, first you'll need to drill through the porcelain tile (example: Kango 12mm Glass And Tile Drill Bit) and then change drill bits and drill through the concrete with a masonry drill bit. You can't use a tile drill bit on the concrete surface as it will wear it out real quickly. To prevent over drilling in the tile surface, I suggest marking the tile drill bit with a bit of colourful tape to indicate how deep you should go. Once that's done you just need to repeat the process a few dozen times so that you can use the Chemset system on the slab. You can use a Ramset 20mm x 300mm Hole Cleaning Brush or a bicycle pump to clean the inside of the drilled hole.
Here is a handy step-by-step guide: How To Drill into tiles
Please remember to wear personal protection such as gloves, goggles and a dust mask.
If you need further assistance, please let us know.
Eric
