foundation.

[ROBERT V. YOUNG]

Some one tell me what is wrong with this picture.
I would like to discus it further.
.Attachment 45101

[Mark S. Tyson]

Originally Posted by ryoung7

Some one tell me what is wrong with this picture.
I would like to discus it further.
.Attachment 45101

Robert,

Unsure what you are fishing for but I will bite. It appears that in the depicted picture a vapor barrier is installed on the basement wall warm side. Which is fine provided that the barrier is permeable. If it were a true vapor barrier and not permeable water vapor would then become trapped between the barrier and insulation and could lead too a mold condition. Glad we don't have basements in Florida.

[Claude Lawrenson]

Full height insulation is not required to meet the minimum code requirement - on new construction in Canada.

Mark is correct - I have often found that this detail coupled with a well sealed vapour barrier over top of the insulation tends to trap moisture inside the insulated foundation wall system. That is often visible during the inspection process.

In most areas of Canada, the insulation only needs to extend 24" below the exterior grade line, to meet the minimum code requirement.

This is one of many examples of why home inspectors need to take/study building science courses.

[ROBERT V. YOUNG]

Mr.Tyson I am looking for an explanation that will help me understand why foundation are built this way. I have see seen so many examples of like this. I am hoping it will help instill a solid understand to myself and others.
Yes a fishing expeditions of a kind. I will post more every now and then. I thank every for getting involved.

[Dale Duffy]

Hi Robert,

Some good information here.

[Brian E. Kelly]

Originally Posted by dduffy

Hi Robert,

Some good information here.

That is where the Drawing in the first post came from.......

[Dale Duffy]

Originally Posted by bkelly2

That is where the Drawing in the first post came from.......

Yes, I know----

[ROBERT V. YOUNG]

Thank you. Building sciences are key. Thank you all. Dale thanks.
I have witness this action of frost all my life working. Last year -28 highs on a job. Did not know how to explain it technically. I'd like some more chatter on the MB about building science. I like more involved in my narrative.

[Bob Elliott]

Great opening thread here.
Now all you building science fans please give me an opinion on how you would comment on this open wall and what you would recommend ? (Basement unit)
Floor is open due to a cracked drain.(ignore that).

Assume nobody is going to do anything from the exterior.

[ATTACH][/ATTACH]

[ROBERT V. YOUNG]

Explain BOB why not exterior repair. I hypothesize its part of the problem..

[Bob Elliott]

Originally Posted by ryoung7

Explain BOB why not exterior repair. I hypothesize its part of the problem..

Per your first post.
I said Condo right?
Now next time I know when I say Robert do not look left you will.

Moisture will always go through the brick.Foundation is bottom half of that wall in case you do not know that.

Now once again tell me what you recommend for the interior wall.
Insulation?
Moisture barrier?
If insulation what type? and also if a moisture barrier does it go on the inside of the insulation or the outside?

Batting or spray foam?
Will a chemical sealant help if applied to the brick?(dry loc)?

Should the drywall be any special type?
Should there be a airspace of some kind?

[Bob Elliott]

You did not answer a single question I asked Robert.

The brick will always have a slight moisture content but they did everything you suggested. Now answer my set of questions.

[Bob Elliott]

So that is a yes for insulation?

Great answer.

[Bob Elliott]

Robert you are a Mason but what was your original post about?
If concrete or brick can be made water tight what is the point of post #1?

[KEVIN WOOD]

Never install insulation below three feet from grade in most areas. As was pointed out you are sure to trap moisture below the frost line and create mold on any cold surface.
When encountering a problem with mold always check with a moisture meter just above the carpet molding. If moisture is found then a complete gut of 4x8 sheet of drywall should be removed from this area and a 4x8 sheet of mold proof drywall added so repairs to the finish will be easier.