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Thanks for the replies, I found out the answer, It is simply a board which is used to mix material up on.

I know that breeze block wall would be a high suction wall, but what other surfaces would also be high suction?

What about you Roughcaster, can you help with this question?

What is a 'banker' when refering to plastering?

I have recently had an exterior wall rendered. Beforehand I was told this would be a two day job, one for the scratch coat and the other to apply the finishing coat. When the builder came, he said he'd do it in one day. He made up a strong mix (extra cement) but with no lime. Layed on one coat...

Thank 4 your reply KingAndy. This isn't a practice wall at college, this is an outside job. I would be using Rendering sand, lime and cement, I only need to know what's the best ratio. Also whether or not to use PVA. The wall is sound an dis about 6 months from being built (I built it!!)

I've recently begun a plastering course at college and although it's early days I've already been given a rendering task. The wall is about 6 feet high and 8 ft long, and is built of concrete blocks. I know that to prepare the wall I should rake out the joints but I'm unsure whether it...

One of these replies advises using PVA prior to rendering, I myself wouldn't use it because when PVA becomes heated, it returns to it's origional condition, which would then cause the render to slide down the wall. I don't know this from experience, my plastering tutor at college states this.

I've recently begun a plastering course at college and although it's early days I've already been given a rendering task. The wall is about 6 feet high and 8 ft long, and is built of concrete blocks. I know that to prepare the wall I should rake out the joints but I'm unsure whether it...