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A reputable company built a chimney. They used Tyvek, then
installed mesh and stone over that. They said... "It would
have probably been a “LITTLE” less expensive to just add the
weep system, instead of tearing down a chimney because it rotted
out.”
Think about what that must have cost! Mobilize a crew, with a
boom truck, tearing it down, rebuilding it, putting stone on it,
(again), praying it don’t rain, fixing any leak stains inside,
all the clean up! And the total weep system would have cost less
than $150.00, installed! Sorta, kinda costly, I think!
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What they should have used is DD Paper, and
, at about a $1.00 per sq ft, it's cheap
insurance. |
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Mortairvent Catalog
(.PDF) |
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Cut Sheet
(.PDF) |
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Mortairvent® |
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Manufactured stone, EIFS & stucco are extremely popular
home exterior coverings. Despite their considerable durability
hairline cracks will form, most frequently in the mortar joints.
These cracks are especially common in parts of the country that
experience frequent freeze and thaw weather patterns. These hairline
cracks allow wind-driven rain to penetrate the mortar and collect
within the interior walls. Once the moisture gets in it has nowhere
to go thus creating the perfect environment for toxic mold growth. |
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Mortairvent® is a two-ply mortar deflection and
ventilation system that had been specifically designed for use with
manufactured stone, stucco, eifs and brick. By installing the
mortairvent two-ply system, a ventilation cavity is created between
the vapor barrier and exterior wall. The blue polymer core mesh
creates the airspace, while the filter fabric blocks mortar droppings
from seeping into this newly formed cavity, while still allowing
moisture to pass through. The combination of drainage and ventilation
eliminates the threat of toxic mold |
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Roll Size: 39" x 61.5' 200 sq ft per Roll |
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INSTALLATION
INSTRUCTIONS |
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Apply a water resistant barrier over sidewall
sheeting.
Note:
Some Regions may require two
weather resistant barriers for stucco applications. Check local
codes for more information. |
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Install Mortairvent® after windows and doors have
been properly installed and flashed. Starting at the base of
the wall unroll mortairvent from left to right with the flap
down. The three-dimensional blue non-woven side against the
water resistant barrier. Staple or nail every three square
feet. Unroll the next course in the same manner as the first. |
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Be sure to always butt the blue material together
without overlapping. Make sure to pull the four-inch flap over
the previous course (shingle
style)
and staple. |
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On the bottom course only, fold the four-inch
flap and tuck it against the water resistant barrier. This
will ensure that insects cannot enter the air channels. |
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Apply metal lath over Mortairvent® using
manufacturers recommended fasteners and spacing. |
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Great Lakes Stone
Supply stocks both of these products, Please do your company or home
a favor and demand that it goes on every exterior stone and stucco
job! |
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For more information about any of
our products call us at: |
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Phone: 218-525-6360
~ Fax:
218-525-6361 |
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E-mail us at:
info@greatlakesstone.com |
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Great Lakes
Stone Supply Inc. ~ 5156 Rice Lake Road
~
Duluth, MN 55803 |
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