|I'm preparing to do the exterior
stucco on my home in the up coming months. In researching types of
metal lath, I have decided to go with the "diamond" metal. I understand
the furring concept on this type of lath, except for the flat diamond
product. I have seen it stapled directly to the exterior, over building
paper. Is there not a need to manually fur this material away from the
| The easiest way to
fur metal lath is buy self furring lath. Here is self-furring
diamond mesh lath.
The lath has dimples, or crimps, 1/4" deep, about 3" on center, to hold the metal lath away from the wall.This allows mortar to get behind the lath for good support and reinforcement.
I have made my own self furring lath before by beating
a bundle of flat lath with a hammer.It is far better to buy
lath already furred.
Failure to use self furring lath,or to fur flat lath, will lead
to a weak product than can fail.
|California style stucco mesh has
self furring crimps.
Note how rows of crimps are colored with red (or yellow) paint.
This makes the crimps easy to find for a good nailing pattern.
Ideally, you want to hit the center of the dimple with a nail,
but the manufacturers explain that isn't possible to hit
the center of the dimple every time.
The most important things that the lath is a little baggy for mortar to penetrate well behind the lath.
|Furring nails are made for flat
lath. A washer is used to
position flat lath away from the wall for a good key. This
method seems real slow, but works. Using self furring lath allows shooting on the lath with a roofing nailer.
|Old furring nails were made in
the shape of a hook.
These were used on a 1930's house we re-stuccoed.
This was an excellent idea for welded wire lath.
For more about methods for furring lath, please click here.