Technical Specifications

Mold growth can and does occur on the surface of
many products, including untreated and treated wood,
during prolonged surface exposure to excessive moisture
conditions. Typically mold appears on the shaded (north)
sides of homes where it is lacking the sunlight to dry up
early morning dew and or shaded areas that get too
little drying air ow. Moisture is crucial to the survival of
mold. Trimming of plants, shrubs or trees next to your
project may be all that is necessary to prevent mold from
reoccurring. To remove mold from the treated wood
surface, wood should be allowed to dry. Typically, mild soap
and water can be used to remove remaining surface mold.
For more information visit www.epa.gov.
All lumber can develop minor checks and cracks as it dries
out. Timbers are particularly prone to checking (grain
separation). While these cracks are unsightly they generally
do not affect the timbers ability to perform. Wood is a
renewable resource that is an excellent choice for outdoor
projects, but because it is a natural material it has some
properties that must be considered when using it in
construction. Allowing timbers to dry out on the jobsite
prior to the construction, then positioning the cracks
in or out of sight might be an option. There are many
llers available if you wish to ll the cracks for a smooth
surface. Just be sure to get a ller with some expansion
and contraction abilities as wood will move some when
it is exposed to the elements as it to takes on and gives
off moisture. The use of a clear water repellent coating
or a semi-transparent water repellent coating product is
recommended to reduce this occurrence.
Important Information
• Do not burn preserved wood.
• Wear a dust mask and goggles when cutting or
sanding wood.
• Wear gloves when working with wood.
• Some preservative may migrate from the treated
wood into soil/water or may dislodge from the
treated wood surface upon contact with skin. Wash
exposed skin areas thoroughly.
• All sawdust and construction debris should be
cleaned up and disposed of after construction.
• Wash work clothes separately from other household
clothing before reuse.
• Preserved wood should not be used where it may
come into direct or indirect contact with drinking
water, except for uses involving incidental contact such
as fresh water docks and bridges.
• Do not use preserved wood under circumstances
where the preservative may become a component of
food, animal feed, or beehives.
• Do not use preserved wood as mulch.
• Only preserved wood that is visibly clean and free of
surface residue should be used.
• If the wood is to be used in an interior application
and becomes wet during construction, it should be
allowed to dry before being covered or enclosed.
• Disposal Recommendations - Preserved wood may
be disposed of in landlls or burned in commercial or
industrial incinerators or boilers in accordance with
federal, state, and local regulations.
• Projects should be designed and installed in
accordance with federal, state, and local building
codes and ordinances governing construction in your
area and in accordance with the National Design
Specications (NDS) and the Wood Handbook.
Building Tips
Removing Sap (continued)
To remove sap from a deck board, we recommend using
a paint thinner or mineral spirits product. Dab thinner
on a rag and rub onto sap to remove the surface deposit.
This may need to be repeated if sap returns. It is very
important to follow the manufacturer’s instructions
carefully for the thinner or mineral spirits product.
After clean up, coat with a water repellent coating or a
semi-transparent water repellent coating product. We
recommend following the manufacturer’s instructions and
label of the nishing product.
Before you start, we recommend you apply the nishing
product to a small exposed test area before completing
the entire project to insure it provides the intended result
before proceeding. Generally speaking several thin coats
are better than one thick coat.
Mold Growth
For more information, call 1-800-585-5161 or
visit www.osmosewood.com.
AC2
®
is a registered trademark of Menards. MicroPro®, is a registered trademark
of Osmose, Inc. MicroPro AC2 pressure treated wood products are treated with
Micronized Copper Azole. MicroPro AC2 treated wood products are produced by
Midwest Manufacturing. © 4_2013-TP
DRAFT 4/10/13
Seasoning Checks or Cracks