Masonry Control Joint
Masonry Control Joint
(OP)
During a site visit, it was discovered that cmu wall control joint was not installed. The block wall was stopped and started and some "filler" material was put in the gap to make it look like a joint was there. Long story short, what can I do now that won't look like cobbled up mess? The wall is a wall of a grade school gymnasium.






RE: Masonry Control Joint
DaveAtkins
RE: Masonry Control Joint
RE: Masonry Control Joint
RE: Masonry Control Joint
RE: Masonry Control Joint
Carl Bauer
www.bauerconsultbotswana.com
RE: Masonry Control Joint
RE: Masonry Control Joint
DaveAtkins
RE: Masonry Control Joint
If the joint width is found sufficient, one way to finish it is to rake it clear of all mortar, installing a backing rod and tooled sealant on ea face. Choose a sealant that has the ability to accomodate the expected movement.
If the joint is not wide enough or otherwise is not clearly working as a mechanical break between the two walls, suggest sawcutting it, or possibly sawcutting a new joint nearby.
RE: Masonry Control Joint
Since the "+ shaped" pre-formed piece was left out of the joint, is there any possibility of the wall getting out of alignment (transverse to the length of the wall) due to thermal movement or wind forces? Backer rod and sealant can be installed to do the as built joint.
RE: Masonry Control Joint
I am sure there are a lot of buildings out there that have been erercted the same way you describe which have not had any problems. But to CYA, I would make the contractor send me an email taking responsibility for whatever maintenance problems may occur from neglecting the detail if he doesn't want to fix it.
RE: Masonry Control Joint
Contractor is on the hook for fixing this. That has been agreed to.
How to fix this problem?
Does it need fixing?
RE: Masonry Control Joint
RE: Masonry Control Joint
It seems ridiculous to tear down part of a wall to insert a little rubber strip. I would find out what kind of "filler" he used to seal the wall, and talk to the manufacturer about movement perpendicular to the joint and distress to the sealant and breaking down the joint over time.
The edges of tilt panels don't usually have a shear key and the joints seam to hold up fine. Contact Dow Corning, they may have a product that will work or tell you if what he put in is going to hold up or not.
http://www.dowcorning.com