Browse Forums Building A New House Re: Exposed aggregate residue on render clean off advice. 14Apr 25, 2016 11:58 pm The diluted hydrochloric acid method is for mortar removal. Don't expect it will work on concrete. if you decide to use it anyway, be very careful and use proper protective gear. I would be taking photos and talking to the builder - or directly to the concreter if you hired them independently. Probably efflorescence Salts coming out of sand, cement products and mortar Water brings them to surface and when evaporates it stays Extremely difficult to get rid of 1 11561 Last year I had a gas leak at my house. 3 days later, I have about 1 sqm of my exposed aggregate paving broken up. I am not sure how to go about getting it repaired… 0 10411 After some ideas on making our patio kid friendly . Currently we have exposed aggregate. The patio faces west and is always in sun even though it has a shade directly… 0 3615 |