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2.5# or 3.4# metal lath for traditional stucco
Last Post 18 Aug 2009 12:04 PM by Jerry Coombs. 8 Replies.
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benoUser is Offline
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14 Aug 2009 10:22 PM

Hi all,

I wonder which metal lath should I use with 3 coat cement stucco: 2.5 or 3.4 lbs/sq.yd over Nudura?

On the web I saw the recommendation to use 3.4# metal lath but at the local store they told me to use 2.5#. What is the right answer?

Many thanks,
Beno
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15 Aug 2009 08:14 AM
Have you ever considered this? It works GREAT with icf.

http://en.wikipedia.org/wiki/Exterior_Insulation_Finishing_System

But sorry I can't answer your question.
astroUser is Offline
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15 Aug 2009 02:04 PM
i would use the 3.4lb the 2.5 is for tile floor mudjobs, or so i have been told
ICFARXXUser is Offline
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16 Aug 2009 11:51 AM
Make sure it is the dimple lath
ICFconstructionUser is Offline
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16 Aug 2009 12:34 PM
Dimple lath is the same as self-furring, right?
Brad Kvanbek - ICFconstruction.net
benoUser is Offline
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17 Aug 2009 08:33 AM
Dimpled raised lath:
http://www.dietrichindustries.com/products/pdf/213_DMF07.PDF

V-Groove raises lath:
http://www.dietrichindustries.com/products/pdf/214_DMF07.PDF

Which one to choose?

Thanks,
Beno
benoUser is Offline
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17 Aug 2009 08:35 AM
Also, should I choose Paper-Backed Offset Option? I thought to install to layers of felt under the lath.
ICFARXXUser is Offline
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17 Aug 2009 10:28 PM
You should put paper behind it. Call Dryvit they have a paper that meets the building codes. Tar paper does not meet code in some areas.

It is the same as self furring
Jerry D. Coombs, PEUser is Offline
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18 Aug 2009 12:04 PM
Here is some good background information. Real "Stucco" is defined in ASTM C 1328. It defines the properties etc. of the cement. ASTM C 1063 covers the installation of lathing and furring. That one should give you some good pointers. Then ASTM C 926 covers the application.
Jerry D. Coombs, P.E.
Coombs Engineering Services
jcoombs@coombsengineering.com
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