Mark68

Thanks Onoff

I know What are your thoughts about putting the rubble in with the mix.

Do you mean use the wire as reinforcement?

Not a million miles away in Dorset

I'm back again with another question. So my concrete seating is going to a rectangle (hollow in the middle, bit like a square polo) 400mm deep 700mm wide and 3m x 3m. So that has a volume of 2.5 cu/m. As it is not structural can I throw in all my old blocks and broken slabs etc as i pour to make up some of the volume? Or would it end up cracking etc Thanks

That is exactly what I want to do just below ground and all the way round.

I guess the answer is to knock up a concrete bowl with the Waterproof additive fill it with water and see what happens!

interesting, so would you say concrete with everbuild waterproofer becomes waterproof I guess I could use a layer of DPC and add the waterproofer for what it costs. Steamy tea - I know what you are saying. I am trying to go for a maintenance free option.

Thanks Guys It has never flooded Does a waterproof additive really work in the concrete mix. I have seen an everbuild product at £5 for 5 litres and a sika product for £50 for 5 litres

I have got a redundant hole in my garden from a sunken trampoline project that has now been out grown. I would like to turn it into a sunken seating area with a fire pit. I am think of pouring solid concrete seats the question is what do I do to keep the earth side dry. Can i just line the hole with a damproof membrane then cut the middle out for drainage when the concrete is done. The middle of the seating area will be gravel. I don't want to end up with permanently damp seats. I also want the render the seats to give them a finish. Any help would be great or any idea where to look. Thanks