Adequate weep screed?

[Barry Adair]

X-66 CASING BEAD (PLASTER STOP)
Casing bead is used as a plaster stop, screed ground, as exposed trim around doors and windows, and as a base screed. Available in galvanized steel and zinc alloy, 10 ft. lengths, 30 pieces, 300 feet per carton. The expanded flange width is 3 inches.

Grounds
Galvanized Weight per 1000 Lin. Feet
Zinc Weight per 1000 Lin. Ft
1/4"
135 Lbs.
130 Lbs.
3/8"
147 Lbs.
140 Lbs.
1/2"
155 Lbs.
148 Lbs.
5/8"
163 Lbs.
156 Lbs.
3/4"
170 Lbs.
163 Lbs.
7/8"
178 Lbs.
171 Lbs.
1"
186 Lbs.
178 Lbs.
1 1/4"
195 Lbs.
186 Lbs.

John,

Stucco leaks! No way to stop this from happening.

Vapor barriers, sub-surface sealants, and flashings keep the structure dry.

I think Carl is talking about the pix in the links he furnished, not your project.

The balcony base surface flashing will serve no purpose as far as deterring moisture intrusion unless it was placed against the substrate under the vapor barrier(s). I'd bet money this didn't happen. This in fact will increase the presence of moisture and prolong the drying time ergo deterioration of barriers and rot.

The AHJ may allow 66 as foundation screed but it does not meet weep requirements and will eventually rust out. May also trap moisture with the same results as above.

[John Onofrey]

I found some good info here:

http://www.chaffey.edu/3di/division-02-16/09220.doc

[John Onofrey]

Carl,

Are you referring to ASTM standard astm c1063?

[Marcel R. Cyr]

Could not agree more with Carl on this one, because with the little Stucco in this area, there was a time where plastered walls in hospitals and the sort had a pretty heavy concentration and all the accessories relate to one and the other.

The pictures to me shows some improper installations to provide a functional rain screen as Carl talked about and is improperly installed.

Since Carl is the expert in this category, I don't believe I have to say anymore.

Marcel
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[Carl A. Brown]

Originally Posted by jonofrey

Carl,

Are you referring to ASTM standard astm c1063?

Yes. Astm C1063 and ASTM C926

But I don't agree with everything the want.

[mrowan]

John

Only have a few minutes, but here are some issues from the photographs that you may want to look at:

Stucco thickness if second floor is frame. The casing screeds or stops present appear less than the required thickness. ASTM 926/1063 for lath and plaster finishes.

Window banding and positive slopes.

Dept of cover on the banding and whether it is reinforced or not.

The junction of the balcony beam and exterior wall.

The transition between the first and second floor is wrong particularly at the juxtaposition with the balcony beam. The stucco should extend past the brick and not be flush.

Balcony detail appears to be a flat roof covering with sidewall flashings incorporating diverters overlaid with a cementitious screeding. This appears ok, even with a concern you have with the stucco clearance from the deck. Make sure it drains freely.

Review the under side of the deck. Maybe some masonry and wood contact that is not permitted. This appears to be a gypsum product on the soffit which should also be rated for exterior use.

Review location of expansion joints. Concering at window openings. Vertical should extend all the way with horizontal beveled into sides, not the other way around.

Regards


Michael

[Kenton H. Shepard, CMI]

Basically, the bottom termination has to provide a way for any moisture trapped behind the stucco to escape. If there is no way (appears to be no way in the photo)... mention that.