L
LightningClean
Guest
I posted this on the brickmaster one, but was afraid that no one would read it.
Hey all, I read through the posts and all were very informative and had very good information. I feel though that I should inform you of one small detail that you left out or maybe are nor aware of with the use of a turbo nozzle.
When brick is layed the mortar joint is then tooled. The tooling is done to bring the "CREAM" or moisture to the top of the mortar joint, thus
making a weather tight seal. Though a turbo nozzle nozzle may do the job visually and it may seem you got the job done you have actually just ruined the tooling. If you take off the "CREAM", the joint is no longer weather tight and now is subseptable to weather and will break down easily. If you talk to the pro's (bricklayers) they suggest chemicals and lower pressure. Closer to what was discribed by Richard. I dont want to make those that say different feel like they are doing it wrong, I just feel that an explanation of why it isn't the correct method was appropriate. We went to the World of Concrete this year and there they had a lesson on proper cleaning of mortar tags and never once was a rotating or turbo nozzle ever mentioned. In fact you can actually destroy the mortor joint and the face of the brick causing interior seepage of water during horizontal rain.
Now there is a lot of sceptisism also on the use of certain acid because of there etching affect on the "CREAM" The best people to talk to on this subject is the manufacturers of the brick and the manufacturers of the mortar. As with everything, going to school on someone elses property is a costly test. By using that turbo nozzle you could actually cause efflorescence one of the very things you want to eliminate. Belive me or not but you owe it to yourself to ask the pros before you do this again.
Hope this makes this a little more clear on why.
Rob
Hey all, I read through the posts and all were very informative and had very good information. I feel though that I should inform you of one small detail that you left out or maybe are nor aware of with the use of a turbo nozzle.
When brick is layed the mortar joint is then tooled. The tooling is done to bring the "CREAM" or moisture to the top of the mortar joint, thus
making a weather tight seal. Though a turbo nozzle nozzle may do the job visually and it may seem you got the job done you have actually just ruined the tooling. If you take off the "CREAM", the joint is no longer weather tight and now is subseptable to weather and will break down easily. If you talk to the pro's (bricklayers) they suggest chemicals and lower pressure. Closer to what was discribed by Richard. I dont want to make those that say different feel like they are doing it wrong, I just feel that an explanation of why it isn't the correct method was appropriate. We went to the World of Concrete this year and there they had a lesson on proper cleaning of mortar tags and never once was a rotating or turbo nozzle ever mentioned. In fact you can actually destroy the mortor joint and the face of the brick causing interior seepage of water during horizontal rain.
Now there is a lot of sceptisism also on the use of certain acid because of there etching affect on the "CREAM" The best people to talk to on this subject is the manufacturers of the brick and the manufacturers of the mortar. As with everything, going to school on someone elses property is a costly test. By using that turbo nozzle you could actually cause efflorescence one of the very things you want to eliminate. Belive me or not but you owe it to yourself to ask the pros before you do this again.
Hope this makes this a little more clear on why.
Rob