re-caulking joints between precast concrete wall panels
re-caulking joints between precast concrete wall panels
(OP)
How frequently should the joints between precast concrete spandrel wall panels be routed out and resealed?
See the building at 131 Torresdale Avenue, Toronto, ON. (use google earth).
See the building at 131 Torresdale Avenue, Toronto, ON. (use google earth).






RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
Dik
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
I was going to note that contrary to many engineers in the firm I'm with, I often spec 'actual products or an approved equal', not a generic item. If it's a product I've used successfully, then I like to stipulate that product.
Dik
RE: re-caulking joints between precast concrete wall panels
painttilesblimpspotionscaulk hadleadasbestoshydrogen gasgremlinsPCB’s inthemit and worked well and lasted a long time. ‘Shame aboutthelead poisoningmesotheliomaexplosionsBlack Plaguewhatever it is that PCB’s cause. The new stuff doesn’t and doesn’t last as long.So your old stuff may contain it and if it does it may have many more years of viability. However, with each passing year comes the risk of greater regulation for its abatement so that’s a risk / benefit tradeoff that only you can determine.
Look into to PCB's to determine if it's something you need to be concerned with or, alternatively, dletee this psot and pernetd yvu’oe neevr hread of it.
RE: re-caulking joints between precast concrete wall panels
Dymonic tasted OK to me...
Dik
RE: re-caulking joints between precast concrete wall panels
Unless you grind it up, put it in a pipe and smoke it.
Just when you think you've got all these things taken care of they add a new one...
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
If the coating 'sheds water' then you may be introducing 'drip lines' that add different 'streaks' to the outside surface.
I remember talking to an Architect when the Roy Thompson hall was being constructed in Toronto about the crossing intersection of the aluminum glazing mullions that there could be streaks on the glazing from water dripping from the intersection. My concern was the long time 'etching' of the glazing... sure enough, there are drip lines, but, I don't know what the long term effect is.
Dik
RE: re-caulking joints between precast concrete wall panels
I don't see any "engineering" reason why 35 year old precast wall panels need to be coated with this silicone (Dow Allguard Elastomer). Can anyone on this forum think of any good reason? The cost is $260,000. Perhaps in cleaning and coating the panels will look better, but just cleaning them would perhaps make them look better.
I am also interested if anyone is involved with precast wall panels who is aware of them being coated with silicone. Is that a common thing to do?
The condo President who is a builder, says that it "protects the condo owners investment". I don't see how.
RE: re-caulking joints between precast concrete wall panels
The example for the Thompson Hall was not related to silicones... but, unanticipated drip patterns which you can have using old silicones or new silicones... sorry for any confusion. There are issues in applying waterproof coatings, as I noted, and very little improvement unless
theythe precast panels are continually saturated. I would suggest that coating precast panels is not common. Maybe best to spend your money elsewhere... new caulking if needed?Dik
RE: re-caulking joints between precast concrete wall panels
RE: re-caulking joints between precast concrete wall panels
You may get different light 'reflection' from different areas in both wet and dry conditions... the appearance may not improve. Does anyone have examples where a similar treatment was applied?
It might be a good idea to do a couple of test panels.
Dik