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Hi, we are building a sunken seating area in our backyard. We have masonry bricks to do the seat and walls. We want to fill the holes rather than mortar them together. What concrete mix should we use?
thanks!
That's looking fab @chloel.
Is there anything in particular that you need to know? When you say "mortaring" are you referring to attaching the capping to the top? Or, perhaps you are planning on rendering the surface of the blocks?
Mitchell
Here's a helpful step-by-step guide @chloel: How to render. Pre-mixed bags like this Rockcote 20kg Grey Quick Render are a great choice.
Were you planning on painting the render after you were done? If so, I just want to make you aware that if it's a light white colour, you're going to have watermarks push through from the rear side of the wall and stain it. Typically painted rendered walls require the rear side of them to be waterproofed to prevent moisture staining on the paint or drainage installed so water does not build up. You can also run into an issue where the water behind the wall penetrates it and the hits the water impervious paint layer. This, unfortunately, can push the paint off. So, if you are going to paint over the render, then I'd advise a darker colour and be aware that it might be pushed off a few years down the track.
Mitchell
