Metal Lath Galvanized Junior™ Mesh (LAM) (P)* (O)* (S ...

Metal Lath
Galvanized Junior Mesh
(LAM) (P)* (O)* (S)* ......................208
Self-Furring Dimpled
(LAD) (P)* (O)* (S)*........................209
Self-Furring V-Groove Mesh Lath
(LAV) (P*), (O*), (S*) ......................210
4-Mesh 1/8" Z-Riblath
(LAZ), (P)* ............................................211
3/8" High Rib Lath
(LAR) (K)* ............................................212
Strip Lath (LAST) ................................213
Cornerite (XRIT) ................................214
Hanger Wire
(HWB8, HWB9, HW12)....................215
Tie Wire (TW18)..................................215
Barrier Mesh BM50, BM75,
BM10, BM15 ........................................216
205

Metal Lath Overview
206
METAL
LATH
OVERVIEW
Metal lath and plaster systems have
been used for many years in both
residential and commercial applications.
Plaster finishes provide a
smooth, high-quality wall surface,
resistant to high impact and abrasion.
Metal lath is used as a substrate
to create a strong mechanical bond
with plaster and stucco, and is used
on interior and exterior walls, ceilings,
soffits, fascia and ceramic tile
underlayment.
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Advantages
Strength—Metal lath embedded with the plaster provides superior strength and
reinforcement.
Flexibility—Readily shaped to ornamental contours to a degree not possible with
other plaster bases.
Fire Resistance—When used with gypsum plaster, metal lath provides excellent fireresistant
construction: up to two hours for partitions and four hours for ceilings and
column fireproofing.
Security—Metal lath and plaster surfaces are extremely difficult to penetrate. They
provide excellent protection against break-through.
Weight per Square Yard
Metal lath is commonly referred to in weight per
square yard. Each nominally sized 27" x 96" sheet
equates to 2 square yards or 18 square feet per
sheet. Lath is available in three different weights:
1.75 lbs./sq. yd.—commonly used as an underlayment
in interior ceramic tile applications and also
with selected proprietary one-coat stucco systems.
2.5 lbs./sq. yd.—commonly used as a substrate
for ornamental and contour gypsum plaster or
portland cement stucco.
3.4 lbs./sq. yd.—commonly used for two- and
three-coat exterior stucco applications.
NOTE: Not all weights are recommended for all
applications. Contact your Dietrich Customer
Care Representative for assistance.
Styles
Metal lath is available in a variety of different
styles for various applications. Dietrich uses a
lettering system incorporated into the product
code to indicate available styles.
M—Flat Diamond Mesh
D—Dimpled Self Furring
V—V-Groove Self Furring
Z—1/8" Ribs for Rigidity
R—3/8" High Rib for Maximum Rigidity
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Paper-Backed
Offset Options
Metal lath is available
backed with asphalt saturated
paper for applications
requiring a
moisture barrier. Paper
conforms to Federal
Specification UU-B-
790a, type 1, grade D,
style 2. Dietrich uses a lettering system incorporated into
the product code to indicate available offsets.
Types
P—Paper is offset by 1" on one side
and one end.*
O—Paper is offset by 2" on one side
and one end.
S—Paper is offset by 1" on one end.
Sides are not offset.*
K—Specially applied Kraft paper for
use with machine-applied stucco
to minimize plaster waste.
*Available for non-code work. The Uniform Building Code
(UBC) requires a 2" paper lap per ASTM C 1063-99.
Junior Diamond Mesh Lath is used as a substrate for gypsum
plaster or for Portland cement plaster stucco on either
interior or exterior wall, ceiling, soffit and fascia surfaces, and
can be used under ceramic tile in wall ceiling and floor applications.
It’s useful in all general-purpose applications, and is the
best lath available for ornamental work and contoured surfaces.
Junior Diamond Mesh Lath—Asphalt Paper Backed is
used in applications where a moisture barrier is required.
Care should be taken to make sure paper overlaps paper and
metal overlaps metal in a shingle-like manner during application.
Dietrich’s paper backing extends beyond the mesh
to accommodate shingling application. For external application,
3.4 lb./sq. yd. lath is recommended.
Self-Furring Junior Diamond Mesh Lath is attached to
substrate through the dimple that furs the lath surface away
from a solid substrate. This lath is especially useful as a stucco
base or for column fireproofing or replastering over old
surfaces. Self-furred lath is required over all solid surfaces.
Self-Furring Junior Diamond Mesh Lath-Asphalt
Paper Backed is used where a moisture barrier is required.
It’s attached in the same manner, but care should be taken
to make sure paper overlaps paper during application.
For more information or to contact a sales representative, see page 3.
Overview
4-Mesh Z-Riblath is used wherever sound, flat surfaces are
required. Nail, staple or screw-attach lath to framing with
ribs perpendicular to wall studs. Z-Riblath is tied to suspended
ceilings but can be nailed, stapled or screwed to the
ceiling joists for direct applications. Flat rib lath should
never be used over solid surfaces.
3/8" Riblath is the most rigid of all and provides the added
support required when framing is more than 16" O.C. but
less than or equal to 24" O.C. In wall and ceiling applications,
it must be attached in the same manner as 4-Mesh Riblath.
Due to 3/8" rib, minimum ground thickness must be 1".
Barrier Mesh is a tough, rigid heavy-gauge expanded mesh
used behind common wall substrates to protect against breakins
and break-outs. This high-strength security mesh is tough to
smash or cut and safeguards walls and ceilings in homes, apartments,
offices, stores, storage areas and correctional facilities.
Installation
Lath should be applied with the long
dimension across supports and with end
joints staggered between courses. The
ends of the mesh lath should be lapped 1",
and the sides should be lapped at least
1/2". Check lap minimums required by
local code. Nail, screw or staple-attach
mesh lath on walls, so that the lower sheets
overlap the upper sheets. Lath also may be
wire tied to the furring channel for ceiling applications. If an
end lap should occur between supports, the two sheets
should be laced or tied using 18-gauge tie wire. Secure lath to
all supports at intervals not exceeding 6". Mesh lath should be
formed into corners and carried out onto an abutting surface.
Where this is not possible, Cornerite, an internal plaster angle
reinforcement should be used.
Paper-Back Installation
Installation of paper-backed lath is best accomplished when
metal-to-metal and paper-to-paper contact is maintained.
Dietrich Metal Framing uses asphalt-saturated paper meeting
Federal Spec. UU-B-790a as backing on metal lath products.
This paper provides a water- resistant barrier that is a
vapor-permeable backing consistent with grade D, style 2
paper (other grades and styles are available upon request).
Minimum lap requirement for Jr. Diamond Mesh, Self-
Furring and 1/8" Flat Rib Laths is 1/2" at the sides and 1" on
the ends which can be easily attained with either “P” (paper
offset 1" on one side and one end) or “S” (paper flush on
sides and offset 1" on ends) applications. ASTM C-1063,
requires a 2" minimum paper lap on all sides. Dietrich’s
paper offset option “O” conforms to
this specification. Make sure to consult
your local building code to
ensure proper compliance.
Metal Lath Overview
207

Galvanized Junior Mesh (LAM) (P)* (O)* (S)*
208
General-purpose lath
provides an exceptionally
strong substrate for
gypsum plaster and
Portland cement
plaster stucco.
■ Excellent for ornamental and contour
plastering.
■ Small mesh openings conserve plaster
and reduce droppings.
■ Minimizes stress cracks by maintaining
consistent plaster depths.
■ Available in 1.75, 2.5 and 3.4 pounds per
square yard.
Dietrich Junior diamond mesh lath is used as a substrate
for gypsum plaster or for Portland cement plaster stucco on
either interior or exterior walls, ceilings, soffit and fascia
surfaces, and can be used under ceramic tile in wall, ceiling
and floor applications. It’s useful in all general-purpose
applications and is the best lath available for ornamental
work and contoured surfaces.
Galvanized steel sheets are slit and expanded to form small
diamond mesh openings (over 11,000 per square yard).
This large number of openings provides superior stucco
Galvanized Junior Mesh (LAM), (P), (O), (S)
DMF Weight Size Packaging
Product
lbs./yard2 kg/yard2 Width Length Pcs./ Bundles/ Yds2 / M2 Code Inches (mm) Inches (mm) Bundle Skid Skid
/
Skid
LAM
(P, O, S)
1.75
2.5
3.4
0.79
1.13
1.54
27
27
27
686
686
686
96
96
96
2438
2438
2438
10
10
10
50
50
50
1000
1000
1000
836
836
836
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Junior Mesh
bonding. Diamond mesh lath is easily cut and can be
formed to accommodate curved surfaces including
ornamental, contour plastering. All sheets are flat 27" x 96"
(nominal) rectangles with squared ends and smooth edges
that allow for efficient installation and consistent lapping.
*Asphalt paper-backed lath is available in a variety of offsets
for various applications requiring a moisture barrier. Paper
conforms to Federal Specification UU-B-790A; type 1, grade
D, style 2 and type 1, grade B, style 1a.
Paper-Backed Offset Options
P — Paper is offset by 1" on one side and one end.* +
O — Paper is offset by 2" on one side and one end.*
S — Paper is offset by 1" on one end. Sides are not offset.* +
+Available for non-code work. The Uniform Building Code
(UBC) requires a 2" paper lap per ASTM C 1063-99.
Limitations: Metal lath products should not be used
with magnesium oxychloride cement stuccos or stuccos
containing calcium chloride additives. In ceiling
assemblies, certain precautions concerning
construction, insulation and ventilation are necessary
for good performance.
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Dimpled raised lath substrate for superior mechanical
bond over solid surfaces.
■ Dimples ensure thorough plaster penetration
and strong mechanical bond.
■ Easily shaped for curved or contoured surfaces.
■ Maintains consistent plaster depths.
Dietrich self-furring dimpled lath is manufactured with
approximately 1/4" dimples that raises diamond mesh away
from solid surfaces to enable thorough plaster or stucco
penetration into and behind the lath for superior mechanical
bonding. The approximately 1/4" dimples are spaced every
1-1/2" O.C. over the entire 27" x 96" rectangular sheet. This
pattern, with approximately 11,000 keys per square yard,
serves to hold lath approximately 1/4" away from the surface,
enabling the plaster to penetrate fully and bond over solid
surfaces like concrete, cement board, column fireproofing,
masonry and replastering over old surfaces. To maintain the
designed furring characteristics, fasteners must be applied
within the dimple cavity.
*Dimpled Lath is also available with an asphalt paper-backing
for applications that require a moisture barrier. The glueattached
asphalt-saturated building paper also ensures a
consistent plaster or stucco depth as the paper prevents
excessive plaster waste and stucco thickness variation. Care
should be taken to make sure paper overlaps paper in a
Self-Furring Dimpled (LAD), (P), (O), (S)
Self-Furring Dimpled
shingle-like manner during application.
Paper-Backed Offset Options
For more information or to contact a sales representative, see page 3.
Metal Lath
P — Paper is offset by 1" on one side and one end.* +
O — Paper is offset by 2" on one side and one end.*
S — Paper is offset by 1" on one end. Sides are not offset.* +
+Available for non-code work. The Uniform Building Code
(UBC) requires a 2" paper lap per ASTM C 1063-99.
DMF Weight Size Packaging
Product
lbs./yard2 kg/yard2 Width Length Pcs./ Bundles/ Yds2 / M2 Code Inches (mm) Inches (mm) Bundle Skid Skid
/
Skid
LAD
(P, O, S)
1.75
2.5
3.4
0.79
1.13
1.54
27
27
27
686
686
686
96
96
96
2438
2438
2438
10
10
10
25
25
25
500
500
500
418
418
418
Self-Furring Dimpled (LAD) (P)* (O)* (S)*
209

Self-Furring V-Groove Mesh Lath (LAV) (P*), (O*), (S*)
210
V-Groove raises lath substrate
for strong mechanical bond
over solid surfaces.
■ V-Grooves provide space for full plaster key
into mesh.
■ Maintains consistent plaster depths.
■ Eliminates need for added furring strips.
■ Available in 2.5 and 3.4 lbs. per square yard.
Dietrich self-furring v-groove mesh lath is manufactured
with five approximately 1/4" deep "V" ribs along the length
of the sheet. These Vs raise the diamond mesh from solid
surfaces to allow thorough plaster or stucco penetration
into and behind the lath for superior mechanical bonding.
V-Groove is used over solid surfaces like concrete, cement
board, column fireproofing, masonry, sheathing and
replastering over old surfaces. To maintain the designed
V-groove furring characteristics, fasteners must be applied
within the V-cavity.
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*V-Groove is also available
with asphalt paper-backed for
applications that require a
moisture barrier. The glueattached
asphalt-saturated paper
also ensures a consistent plaster
or stucco depth as the paper
prevents excessive plaster waste.
Care should be taken to make
sure paper overlaps paper in a
shingle-like manner during
application.
Paper-Backed Offset Options
P — Paper is offset by 1" on
one side and one end.* +
O — Paper is offset by 2" on
one side and one end.*
S — Paper is offset by 1" on one
end. Sides are not offset.* +
Self-Furring, V-Groove
+Available for non-code work. The Uniform Building Code
(UBC) requires a 2" paper lap per ASTM C 1063-99.
DMF Weight Size Packaging
Product
lbs./yard2 kg/yard2 Width Length Pcs./ Bundles/ Yards2 / M2 Self-Furring V-Groove Mesh Lath (LAV), (P), (O), (S)
Code Inches (mm) Inches (mm) Bundle Skid Skid
/
Skid
LAV
(P, O, S)
1.75
2.5
3.4
0.79
1.13
1.54
27
27
27
686
686
686
96
96
96
2438
2438
2438
10
10
10
25
25
25
500
500
500
418
418
418
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1/8" ribs provide additional
rigidity for wider on-center
spacing.
■ Enables double-up plastering to shorten
application time.
■ Smaller mesh openings aid keying and reduce
plaster usage.
■ 1/8“ ribs add rigidity.
■ Available in 2.75 and 3.4 lbs. per square yard.
■ Not suitable for contour plastering or use over
solid surfaces requiring 1/4” furring.
Dietrich 4-mesh z-riblath is a galvanized flat rib-type lath with
18 1/8" high ribs designed to provide additional rigidity for
wider spacing (16" O.C. and 19.2" O.C.) on flat plaster ceiling
applications and open frame studding without sheathing.
Smaller mesh openings and rigidity of ribs aid in keying and
enables double-up plastering, saving plastering time.
Double-up plastering is the process of applying the brown
coat before the scratch coat has fully hardened. Care must
be taken to ensure that the scratch coat is properly set.
Dietrich 4-mesh z-riblath is also used as a ceramic tile
backer over wood or steel stud framing when no sheathing
4-Mesh 1/8" Z-Riblath (LAZ), (P)
4-Mesh
For more information or to contact a sales representative, see page 3.
Metal Lath
is applied. The additional rigidity of the lath can be used
with wall framing members up to 24" O.C.
Attachment to the framing can be made by nailing, screwing
or stapling lath to framing with ribs across studs. Lath must
be wire-tied to framing or channel for ceiling applications.
Sheets are 27" by 96" and reversible for faster and easier
installation. Flat rib can be nailed to joists for direct
application to framing; however, wire tying is recommended
for all suspended ceiling applications over channel.
*4-Mesh 1/8" Z-Riblath is also available
with asphalt paper-backed for
applications that require a moisture
barrier. The glue-attached asphalt
paper also ensures a consistent plaster
or stucco depth and prevents excessive
plaster waste. Care should be taken to
make sure paper overlaps paper in a
shingle-like manner during application.
Paper-Backed Offset Options
P — Paper is offset by 1" on one side
and one end.* +
+Available for non-code work. The
Uniform Building Code (UBC) requires
a 2" paper lap per ASTM C 1063-99.
DMF Weight Size Packaging
Product
lbs./yard2 kg/yard2 Width Length Pcs./ Bundles/ Yards2 / M2 Code Inches (mm) Inches (mm) Bundle Skid Skid
/
Skid
LAZ (P)
2.75
3.4
1.24
1.54
27
27
686
686
96
96
2438
2438
10
10
50
50
1000
1000
836
836
4-Mesh 1/8" Z-Riblath (LAZ), (P)*
211

3/8" High Rib Lath (LAR) (K)*
212
Designed to provide
exceptional rigidity
in ceiling and soffit
applications.
■ Herringbone mesh pattern allows
for excellent keying.
■ Commonly used for plaster ceilings
under steel joists, concrete floors
and over soffits.
■ Easily lapped at outer edges
reducing plaster cracks.
■ Available in 3.4 lbs. per square
yard only.
■ Not suitable for contour plastering.
Dietrich 3/8" high rib lath is the most rigid of all laths and
provides the added support required when framing is more
than 16" O.C. but does not exceed 24" O.C. It is commonly
used for soffits and ceilings under steel or wood joist
construction and metal-reinforced concrete floors.
Dietrich 3/8" high rib lath has a herringbone mesh
pattern with 3/8" V-shaped ribs running the length of the
sheet at 4-1/2" intervals and inverted 3/16" intermediate
ribs. The rib is placed against the framing member and
does not require a minimum 1" three-coat system. Because
of the Dietrich 3/8" riblath’s extraordinary strength, this
lath can be used for studless nonload-bearing partitions
3/8" High Rib Lath (LAR) (K)
DMF Weight Size Packaging
Product
lbs./yard2 kg/yard2 Width Length Pcs./ Bundles/ Yards2 / M2 Code Inches (mm) Inches (mm) Bundle Skid Skid
/
Skid
LAR 3.4 1.54 27 686 96 2438 10 50 1000 836
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3/8" Rib Lath
by wire tying lath back to back with ribs running
perpendicular to each other. Plaster can then be applied
to form a wall 2" thick.
*3/8" High Rib Lath is also available with a kraft paper
backing between the ribs to prevent excessive plaster
waste.
Paper-Backed Offset Options
K — Specially applied kraft paper used when machineapplied
stucco is used to minimize plaster waste.*
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Expanded metal strip
for general plaster
reinforcement.
■ Finished edges for safe handling.
■ Galvanized for corrosion protection.
■ Easy to apply and finish.
Strip Lath (LAST)
Strip Lath
For more information or to contact a sales representative, see page 3.
Metal Lath
Dietrich strip lath is a flat expanded metal strip used as plaster
reinforcement over joints of non-metallic lathing bases and where
dissimilar bases join. It’s commonly attached diagonally at the corners of
doors, windows or areas prone to cracks. It may also be used to span pipe
chases or reinforce other stress points such as the corners of openings in
the stucco membrane within the lath system. Available in 4" and 6" widths
and 8' lengths.
DMF Size Weight/Carton Packaging
Product
Code Inches
Width
(mm) ft.
Length
(m)
lbs. (kg)
Pcs./
Bundle
Pcs./
Skid
LAST
4
6
102
152
8
8
2.44
2.44
24.5
35.8
11.1
16.2
75
75
1350
1350
Strip Lath (LAST)
213

Cornerite (XRIT)
214
Expanded metal lath angle for inside or inner plaster
corners used to reduce corner cracks.
■ Finished edges for safe handling.
■ Galvanized for corrosion protection.
■ Easy to apply and finish.
Dietrich Cornerite metal lath angle is used to reinforce
all inside or inner plaster corners to reduce corner
cracking. Cornerite metal lath angle is formed from
finished edge strip lath and bent lengthwise to a 100° angle
to ensure a snug fit into 90° corners. It's commonly used
when walls meet walls or ceilings, over inner angles of
masonry construction and in the floating-angle method of
applying gypsum lath to wood framing in order to reduce
plaster cracking.
Dietrich Cornerite metal lath angle should be tied to the
base lath using 18-gauge tie wire. Cornerite metal lath
angle should not be attached directly to support framing
but allowed to float in the corner. Available in 2" x 2" in 4 '
and 8' lengths, and 3" x 3" in 8' lengths only.
Cornerite (XRIT)
DMF Size Weight/Carton Packaging
Product
Code Inches
Width
(mm) ft.
Length
(m)
lbs. (kg)
Pcs./
Bundle
Pcs./
Skid
2 x 2 50.8 x 50.8 4 1.22 30 13.6 125 1350
XRIT 2 x 2 50.8 x 50.8 8 2.44 60 27.2 75 1350
3 x 3 50.8 x 50.8 8 2.44 78 35.4 75 1350
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Cornerite
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Suspends and connects U-channel
and furring channel gridwork for
drywall, plaster and veneer ceilings.
■ Tie wire is available in 18 gauge and in lengths of 24”, 28” and 48”.
■ Hanger wire is available in 8, 9 and 12 gauge and lengths of 12’.
■ Wire products conform to ASTM C1063 and A641.
■ Available by the hank (bundle).
Dietrich hanger wire is available in 8, 9 and 12 gauge and is
galvanized for corrosion resistance. Hanger wire is
suspended from the underside of the floor structure to
provide a structural support for drop, gypsum wallboard or
plaster suspended ceilings.
Dietrich tie wire is 18-gauge galvanized soft annealed wire
used in drywall and plaster construction to tie furring
channels to main runner U-channels. It’s also used to tie
metal lath to channels in plaster construction, attach
expansion/control joints to lath and tie the lath overlap
between rows of fasteners.
Hanger Wire (HWB8, HWB9, HW12)
For more information or to contact a sales representative, see page 3.
Metal Lath
DMF Length Weight/Bundle Packaging
Product
Code
Gauge
ft. (m) lbs. (kg)
Bundles/
Skid
HWB8 8 12 3.66 50 22.62 20
HWB9 9 12 3.66 50 22.62 20
HW12 12 12 3.66 50 22.62 20
Tie Wire (TW18)
Hanger Wire
Tie Wire
DMF Length Weight/Box
Product
Code
Gauge
Inches (mm) lbs. (kg)
24 610 25 11.31
TW18 18 28 711 25 11.31
48 1219 50 22.62
Hanger Wire (HWB8, HWB9, HW12) & Tie Wire (TW18)
215

Barrier Mesh BM50, BM75, BM10, BM15
216
High-strength security backing
for walls and ceilings in all
types of construction.
■ Protects against break-ins and break-outs.
■ Ideal for use in lieu of reinforced concrete or
concrete block.
■ High-strength and fire-resistant.
■ Made from carbon steel.
Barrier Mesh is a tough, rigid heavy-gauge security mesh used
behind common-wall substrates to protect against break-ins and
break-outs. Sheets are 48" x 96" expanded steel used to provide
continuous reinforcement where security is the objective. This
high-strength security mesh is tough to smash or cut and
safeguards walls and ceilings in homes, apartments, offices,
stores, vaults, storage areas and correctional facilities.
In addition to providing a high-strength and fire-resistant plaster
finish, Barrier Mesh also offers a cost-effective and time-saving
alternative to reinforced concrete or concrete block. Available
opening widths include: 1/2" (BM50), 3/4" (BM75), 1" (BM10)
and 1-1/2" (BM15). Available gauges include: 18 gauge (BM50);
16 gauge (BM50), (BM10), (BM15); 13 gauge (BM50), (BM75),
(BM15) and 10 gauge (BM75), (BM15). Product can be produced
to Military Spec. MIL-M-17194 Type II, Class 1; ASTM 1267.
Special order gauge and length combinations can be provided
upon request. Inquire with your Dietrich Metal Framing
Customer Care Representative.
DMF Thickness Size Weight/100 ft. 2
Product
Code
Gauge Inches (mm) lbs. (kg)
SWD
Width
LWD
Length
C-C of Bond Percent of
(SWD x LWD) Open Area
Overall
Thickness
18 1/2 12.7 66 29.9 96" 48" .500" x 1.20" 60 .039"
BM50 16 1/2 12.7 82 37.2 96" 48" .500" x 1.20" 63 .050"
13 1/2 12.7 140 63.5 96" 48" .500" x 1.20" 52 .070"
BM75
13
10
3/4
3/4
19.1
19.1
75
171
34.0
77.6
96"
96"
48"
48"
.923" x 2.00"
.923" x 2.00"
74
63
.070"
.120"
BM10 16 1 25.4 41 18.6 96" 48" 1.090" x 2.00" 78 .050"
16 1-1/2 38.1 38 17.2 96" 48" 1.33" x 3.00" 83 .048"
BM15 13 1-1/2 38.1 57 25.9 96" 48" 1.33" x 3.00" 80 .070"
10 1-1/2 38.1 114 51.7 96" 48" 1.33" x 3.00" 75 .110"
*Available in standard or flat.
BM50 BM15
Barrier Mesh (BM50), (BM75), (BM10), (BM15)
request a quote online @
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Flat