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-   -   House of Concrete having many issues (https://www.diychatroom.com/f105/house-concrete-having-many-issues-657393/)

dcultravillain 04-16-2019 04:08 AM

House of Concrete having many issues
 
So we live in a 1939 built house of concrete and plaster. Some do it yourself repairs made over the years including replacing some galvanized steel pipes with copper. Patch work, rat infestations, poor repairs and neglect all over.

So, I don't know what the foundation is, how do I find out? Do these walls have studs inside I need to be aware of? The issue is we have well, for now, mold and water damage moisture in at least one room and after removing spots of plaster, the concrete seems to be next to or built with brick or something. I dont know how often this happens in the house. Why would this be done?

Alright, so quick problem: I'm trying to clean the concrete patches where plaster peeled, but theres a lot of **** in the way. The hardest is this brown dust looking stuff over it. I dont know what exactly was used, bonding agent, sand stuff, gypsum etc. It's hard to scrape, wash, etc and I need to get through it to remove the mold. The source of moisture etc is another issue.

Sorry im very tired. The quick question, what could this product be and how do i remove it? I will post pictures in the morning.

ClarenceBauer 04-16-2019 07:45 AM

Re: House of Concrete having many issues
 
It was common in 1939 to have plaster applied to brick / concrete.
What is the exterior of the house Brick , wood or Stucco ?
How thick are the walls ? check a window & measure the thickness from outer to inter finish. Remove a window or door & check the makeup material.
Pictures would help a lot.

carpdad 04-16-2019 08:17 AM

Re: House of Concrete having many issues
 
https://www.oldtownhome.com/2013/10/...ew-Brown-Coat/


I wasn't sure if I was remembering the name correctly.:smile: It turns out it is called a brown coat. I've come across some of it and they look like as if mud was used. Scratch coat is another name and it is fine as it is as long as it is stable.
I'd start with the roof, siding (esp if stucco) and around the windows and doors for water problems. Different level roofs, their joints and flashing, any vent or pipe through the roof, if you have a high patio, decks.

Some brown staining can come from water leaching through wood.

bob22 04-16-2019 08:55 AM

Re: House of Concrete having many issues
 
You best get that stuff tested for asbestos before you start scraping it off etc...
Asbestos was used in a lot of building materials before people knew better.

ClarenceBauer 04-16-2019 09:25 AM

Re: House of Concrete having many issues
 
Asbestos was not used in Plaster until the 1940's.
If the brown material is a Lime based coating it would not contain Asbestos.

bob22 04-16-2019 11:15 AM

Re: House of Concrete having many issues
 
Quote:

Originally Posted by ClarenceBauer (Post 5814711)
Asbestos was not used in Plaster until the 1940's.
If the brown material is a Lime based coating it would not contain Asbestos.

I saw this on this site:
"Asbestos in Plaster and stucco, includes Chrysotile asbestos.

Some plaster products may also contain tremolite (a form of amphibole asbestos) as an inadvertent contaminant from asbestos mining of chrysotile, and also they may include vermiculite that, depending on where it was mined, also contains asbestos (Libby).

Because plaster was added to various wallboard products and drywall to improve its water resistance or fire resistance, in turn that means that additional drywall products manufactured between 1920 and 1978 or later may also contain both crysotile and tremolite asbestos. "

So, it might be dangerous if this is correct.

dcultravillain 04-16-2019 02:30 PM

Re: House of Concrete having many issues
 
5 Attachment(s)
Here's what I had on my phone. Going to take more now. Hope it works.

ClarenceBauer 04-16-2019 04:26 PM

Re: House of Concrete having many issues
 
The photo's appear to be plaster applied over wood lath.
Water / Moisture will cause the problem you have it could be a combination of rotted wood & mold.
The make up of the most common plaster in that time period would have been Quick Lime & sand applied about 5/8 inches including the lath.
Being you have wood lath the construction is going to be wood studs or masonry with furring applied over the masonry. During that time period you could have 3 & 1/2 inch X 2 & 1/2 inch boards in the brick @ about every 10 course of brick used to nail the furring too.
As for the asbestos in the USA most types of asbestos - containing plaster were manufactured between 1942 & 1947. Gypsum wall board was much earlier as most plaster was job site mixed & in 1939 the mix was mostly Lime & Sand.

dcultravillain 04-16-2019 07:22 PM

Re: House of Concrete having many issues
 
6 Attachment(s)
Quote:

Originally Posted by ClarenceBauer (Post 5814991)
The photo's appear to be plaster applied over wood lath.
Water / Moisture will cause the problem you have it could be a combination of rotted wood & mold.
The make up of the most common plaster in that time period would have been Quick Lime & sand applied about 5/8 inches including the lath.
Being you have wood lath the construction is going to be wood studs or masonry with furring applied over the masonry. During that time period you could have 3 & 1/2 inch X 2 & 1/2 inch boards in the brick @ about every 10 course of brick used to nail the furring too.
As for the asbestos in the USA most types of asbestos - containing plaster were manufactured between 1942 & 1947. Gypsum wall board was much earlier as most plaster was job site mixed & in 1939 the mix was mostly Lime & Sand.

I didn't see any... here are more pictures from todayAttachment 556311

Attachment 556313

Attachment 556315

Attachment 556317

Attachment 556319

Attachment 556321


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