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Efflorescence Mystery

 
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Old 06-25-2015, 10:27 AM   #41
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Re: Efflorescence Mystery


Here are my observations. The last three res-ponders all have offered valid perspectives / possibilities. The thing I noticed / thought about,the building is probably lime based mortar. The pointing mortar definitely is not. Also,if you look at the window to the far left,it was pointed below the sill and the other pointing is obvious where it occurred. Bottom line,the pointing IMHO has somehow contributed to the efflorescence. Possibly situations as 4thgen. has suggested.



By the way,IMHO do not apply sealer.
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Old 06-25-2015, 11:54 AM   #42
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Re: Efflorescence Mystery


Yeah, sealer is not going to fix that.
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Old 06-25-2015, 11:59 AM   #43
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Re: Efflorescence Mystery


Likely source is the window sill as already mentioned, you can see soem staining underneath. Brick sills don;t do well around here. Pointing mortar is definitely not compatible, and could be contributing as well but if the problem existed previously there are other factors. Bounce back from the driveway could also be adding to the mess
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Old 06-25-2015, 04:58 PM   #44
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Re: Efflorescence Mystery


So, the answer to my clients question is: "Call another mason?" Dom-ass wanna give it a go.
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Old 06-25-2015, 05:20 PM   #45
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Re: Efflorescence Mystery


You could try PMing S.U.M, he's in the GTO. The cost of my commute would make it cost prohibitive
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Old 06-25-2015, 07:49 PM   #46
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Re: Efflorescence Mystery


Just a thought / observation,if the 100 yr. home truly is multiple wythes,where are the header courses ? In my neck of the woods (N.W.In.) you would not see a 100 yr. building metal tied. Wonder if it is solid up to the floor joists and veneered above ?
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Old 06-25-2015, 08:14 PM   #47
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Re: Efflorescence Mystery


Take another look. Every now and again there are 2 heads instead of a stretcher. Not a super common bond and I don;t know it's name but I see it every now and again.
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Old 06-25-2015, 08:18 PM   #48
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Re: Efflorescence Mystery


It's on the courses that are on 1/3 lap and it goes 2 stretchers,2 headers, 2 stretchers, 2 headers etc.. On most of the buildings I've seen it on it;s every 5 or 6 courses like American bond and also under any openings. This one seems a little ore random
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Old 06-25-2015, 09:26 PM   #49
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Re: Efflorescence Mystery


Dom-Mas @ 48 A version of "Ideal" rowlock? I understood the OP as tuck pointed, then efflorescence...

The striking is rather poor, lazy, and a tag at EVERY head joint....

Maybe the tucker ground the glaze off most of the units widening the joints to "speed' the pointing....freeing salts formerly "trapped" inside the glazing...

Version II, sand or soda blasting destroying the brick's surface glaze...

I'd check for plumbing leaks or even HVAC issues behind above white spot.

Finally, what is up with the rock face footer/basement? is the black coating contemporaneous with the discoloring? formerly released moisture is now held in to lower courses of brick.
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Old 06-25-2015, 09:59 PM   #50
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Re: Efflorescence Mystery


definitely multi whythe and might just be rising damp or perhaps a splashing gutter?

On a side note, we got pounded with 75 to 100 mph winds and heavy rain Tuesday night and were still out of power. Fast moving thunderstorms soaked and damaged a lot of old masonry structures. Slates were removed from local churches...sealers are commonplace in these parts. Used on healthy masonry, they prevent unwanted soaking, efflorescence issues, corrosion, and wood rot associated with let in floor joist, etc...
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Old 06-26-2015, 06:14 AM   #51
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Re: Efflorescence Mystery


Quote:
Originally Posted by Chris G View Post
This an email from a client, any thoughts?

[I]Hi Chris, sorry to bother you with this, but I'm stuck. We have a strange water issue in the bricks on one side of the house--it rains, and 8-12 hours later we get a vast area of white that appears as the water evaporates out. Last winter it blew out the pointing, and I had to have it redone. The mason was guessing the water was getting in through some windows, but they are all fixed up, so that's not it.
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Originally Posted by Fouthgeneration View Post
I understood the OP as tuck pointed, then efflorescence...

I don't think so. It looks like there was effloresence, it got bad enough to "blow out the pointing", which was when a mason came and did the "repair"
Finally, what is up with the rock face footer/basement? is the black coating contemporaneous with the discoloring? formerly released moisture is now held in to lower courses of brick.
That's a good point and one I was thinking of last night. Typically here (4 hours+ away but still a shared masonry heritage) there is a bond break of some sort between the foundation and the brick. Usually just a strip of tar paper the width of the wall, but by the time I see it, it's most often pretty ratty and not doing a heck of a lot, so it is quite possible, but why isn't the rest of the lower wall the same?
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Old 06-26-2015, 10:31 AM   #52
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Re: Efflorescence Mystery


This is the best thread I've read in a long time.
Everybody working hard to solve the problem, no ad hominem, no Straw Man arguments, no "100% certain", no logical fallacies.

So, more clues needed?

And, how to get them?
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Old 06-26-2015, 07:39 PM   #53
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Re: Efflorescence Mystery


Quote:
Originally Posted by dom-mas View Post
Take another look. Every now and again there are 2 heads instead of a stretcher. Not a super common bond and I don;t know it's name but I see it every now and again.


They were hard to spot,but since you mentioned it,I did see them.

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