DETERDEK PRO, Cement Remover and Brick Acid Cleaner, Efflorescence Remover, Strong Patio Cleaner, Ideal for Porcelain Tile, 1L

Does what is says. Cleans and no marks after! Good value. Definitely buying again when needed.

I will give this 7/10.. I got this to remove sand/cement sediments from the surface of my garden slabs.. with the use of a steel brush and a lot of hard scrubbing it did remove 85% also bear in mind its not the cheapest of products! I followed instructions to the T I also used tiny amounts neat in the stubborn areas.. see my pics

I bought this to remove the yellow mortar staining left on a porcelain patio after laying it. I have a very powerful pressure washer and it wouldn’t shift the stains. For that, this product works amazingly well. Dilute it 5:1 in a bucket and pour it over a few slabs at a time, spreading it around with a scrubbing brush. Waited 3 minutes then scrubbed thoroughly with a stiff bristle natural scrubbing brush. Then waited another minute and scrubbed again before washing it off with the pressure washer. The slabs came up good as new! What it’s not so good at is removing porcelain slab primer. Lesson learned there - do not let that dry on the top of the slabs! I did manage to get that off with some Sika brick and patio acid used neat, and a lot of scrubbing! I have another patio to lay so I ordered more of this to remove the mortar residue. Photos below of the cleaned and uncleaned slabs.

Did not work great on Porcelain patio slabs for primer/cement cleaning, though I didn't try to use neat and maybe I should have but I went with a different product from B&Q instead.

Good Product, was sceptical at first but removed the cement from my limestone paving. Took a few attempts but worked in the end.

This solution really work and help to remove the stains, I tried the other band before, but the remaining cement is still can’t remove. Just to remind you have to try different tools to help, like brush, sponge or scrubbing mesh. I used scrubbing mesh works well.

I bought this product but was surprised how small it was, I’m sending it back. I need to remove cement residue from my patio after having my walls lime rendered. Plasterer said he clean up but he didn’t. He recommended brick acid. Brick acid is hydraulic acid. You need a license to buy above 15%. If you have license (£39) for home use, you can buy 20litres for less than £40 delivered and dilute accordingly. This is £12 for 1l. What special chemical formulation is this? I’m sure it is effective but to bottle a 1l liquid in a mini large bottle (normally 5l) and sell online! This is diluted hydraulic acid. It is over priced. Return.

Great Product