Browse Forums Building A New House Re: Mortar defect? 2Feb 27, 2019 9:27 am This thread should be in Building Standards to have the best chance of it seen by the forum's professionals. First thing to do is to check your contract to see whether there is a certified Performance Solution that allows a weaker mortar mix that will most often use more than double the sand content. A 1:1:10 specification is common in a Performance Solution. You can get mortar mix lab analysed. If the mortar mix has excess sand to what is allowed, raking the mortar out to 25mm and repointing is the usual solution. I would avoid chemical hardeners. The problem could also possibly/probably be a symptom of the acid clean but getting the mortar analysed would be my recommended move after checking the contract. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Mortar defect? 3Feb 28, 2019 5:31 pm We use HIA contract theres nowhere specified certified Performance Solutions. But mortar mix 1:1:4.5 was specified in engineer notes. Its probably a symptom of acid clean because the uncleaned mortar seems fine. We will get the mortar analysed but If it come back within the specification, what would be the solution to fix the loose mortar damaged by acid wash? Re: Mortar defect? 4Mar 01, 2019 9:49 am ozcargod8 We use HIA contract theres nowhere specified certified Performance Solutions. But mortar mix 1:1:4.5 was specified in engineer notes. You can't trust brickies. ozcargod8 Its probably a symptom of acid clean because the uncleaned mortar seems fine. There are a number of posts on Homeone about mortar and other issues after acid washing. Just do a forum search using the words "acid wash mortar" or similar to read about other's experiences. ozcargod8 We will get the mortar analysed but If it come back within the specification, what would be the solution to fix the loose mortar damaged by acid wash? Raking the mortar out to 25mm and repointing is best but this might be met with resistance from your builder. Do you have an independent building consultant who has done stage inspections for you? You really need someone with industry experience onsite to assess the seriousness. 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Its the flashing and is normal. Some builders cover them up others just leave them handing. You can cover it up with an aluminium bracket or ask the builder. 7 11604 you need to understand the breakdown of warranties. 90 warranty is considered as minor defects rectification period where as the longer ones are more major/structural… 1 5553 Building Standards; Getting It Right! There doesn't look to be any rebate in the slab to prevent water from scooting under the window. AS4654 is the Australian standard to look at/refer to. They have… 1 10485 |