Specification Sheet

INFO SHEET
Conceal Textured Caulk for Wood
Conceal textured caulk delivers performance
that’s hard to see. Conceal’s 7 colors blend in with the
most popular stains used on log and wood homes, and
Conceal’s light texture simulates the natural roughness
of wood. The combination of color and texture makes
it hard to see where the caulking ends and the wood
begins. Instead, they just blend together.
Although the caulking is hard to see, Conceal
delivers performance. It outperforms all other textured
caulks currently available. Additionally, Conceal. . .
• Cleans up with soap and water
• Is resistant to rainfall in 1-4 hours
• Has a limited lifetime warranty
• Has superior elongation, memory and adhesion
Fundamental Caulking
Application Guidelines
• Proper substrate preparation and application are
imperative for product longevity. Read this entire
Info Sheet (CNL 002) before applying any product.
• Conceal is not a chinking and should be used in
joints under 2” wide. If the joints are wider, we
recommend either Log Jam or Chinker’s Edge.
• Make certain there is compatibility between your
stain and Conceal. We recommend Sashco’s
Capture
®
/Cascade
®
, High Sierra
®
, or Transformation
®
stains for exterior applications and Symphony
®
interior clear coat for beautiful long-term
protection. Best results are obtained when Conceal
is applied to clean, stained wood. Call Sashco at
1-800-767-5656 for guidance.
• Check the weather forecast. Finishing products are
best applied in moderate weather conditions, i.e.,
out of direct sunlight, in dry, warm conditions.
• Check the surface temperature. It should be
between 40˚-90˚F (4˚-32˚C).
• It is always best to use a bond breaker (usually
backer rod) before caulking. Sashco strongly recom-
mends the use of backer rod, especially if the home
is new and/or the wood is subject to significant
movement. If a bond breaker is not used, expect
more caulking repairs.
• Tool Conceal to help ensure good contact with the
wood surfaces. This will greatly aid adhesion.
• Ideal caulk depth is half of the joint width, but no
less than 1/4” and no more than 1/2”.
• Assemble tools and equipment:
- Backer rod
- Caulking guns
- Trowels, spatulas, or foam brushes for tooling
- Clean water and rags
- Plastic sheets to cover the caulking if wet
weather moves in
- Staple gun & staples (if necessary to help with
backer rod installation)
• If you have any questions about application, watch
our application videos at www.sashco.com or call
us call us at 1-800-767-5656.
Surface Preparation
Best results are obtained when Conceal is applied
to wood that has been previously coated with a com-
patible and thoroughly cured stain. In fact, Conceal
has a Limited Lifetime Warranty when applied over
any of Sashco’s stains: Capture Log Stain, High Sierra
or Transformation. Call us for details on this special
warranty – the best in the industry!
If not using a Sashco stain, be sure to confirm
its compatibility with Conceal. If the stain is older
but still intact, clean the wood surfaces thoroughly to
remove dirt, pollen, bird droppings, and other
surface contaminants.
The USDA Forest Products Laboratory and other
researchers around the world have recently reported
that surface wood exposed to sunlight for as little as
1-2 weeks can become significantly damaged and
unsound which may lead to premature adhesive
failure of coatings. Such surface wood damage has
the potential to also hurt Conceal’s (or any caulk’s)
adhesion. Once bare wood has been properly cleaned
and prepped to remove unsound wood, stain should
be applied as soon as possible. Follow with
Conceal caulking.
A few stains, especially those high in wax content
or non-drying oils, may interfere with adhesion. Some
of these coatings can hurt any caulk’s adhesion—
whether applied before or after the caulk—so
we advise against their use. Check with Sashco if you
have questions about your particular product.
10300 E. 107th Place • Brighton, CO 80601
1-800-767-5656 • 303-286-7271 • www.sashco.com
11-11
4 1
Technical Data
(Not to be considered specifications)
Colors
Frontier Gold
Harvest Wheat
Gold Tone (formerly Warm Honey)
Brown Tone (formerly Golden Mesa)
Red Tone (formerly Canyon Wall)
Redwood (formerly Santa Fe Trail)
Grizzly Brown
Packaging
10.5 oz. plastic cartridges, 29 oz. fiber cartridges,
and 5-gallon straight-sided pails. (Not all colors are
available in all sizes.)
Application Range
Surface temp of 40˚F (4˚C) - 90˚F (32˚C)
Service Range
-30˚F (-34˚C) - 250˚F (121˚C)
Paintability
Paintable with latex coatings after a minimum of 24
hours curing (longer on wider joints) and after 5 days
with most oil-based coatings. Contact Sashco for
more specific guidance.
Compatibility
Conceal will adhere to woods treated with most pre-
servatives including borates**, pentachlorophenol,
and copper compounds. Conceal is also compatible
with insulating glass sealants and most building mate-
rials, including foam insulation and vinyl windows.
** Some borate wood preservatives contain glycols
or other agents that could interfere with adhesion.
Sashco’s PeneTreat contains no glycols.
Specifications
Passes ASTM C-834, the performance requirements
of TT-S-00230B and ASTM C-920 Class 25.
Meets FHA requirements.
VOC
<1.5% by weight, max, 42 g/L.
Cure-Through Time
3 weeks (1/2” thickness, 70˚F, 50% relative humidity)
Extrusion Rate (ASTM C-603)
1100 g/min (1/8” orifice at 40 psi)
Freeze-Thaw Stability (ASTM C-731)
Passes 5 cycles (0˚F - 70˚F)
Hardness, Shore A (ASTM C-661)
20 (21-day cure)
Elongation @ Break
550%
Solids (ASTM C-1250)
73% by weight, 71% by volume
Tack-Free Time (ASTM C-679)
Less than 1 hour
Resistance to Substrate Staining (ASTM D-2203)
None
Water Resistance
No washout (4 hours, 40˚F, 50% relative humidity)
In severe conditions - under 40˚F (4˚C) and/or 70%+
humidity – full rain resistance may take longer. Cover
exterior walls with plastic if rainfall is expected with-
in 24 hours after installation.
Not recommended for continuous submersion or
areas exposed to foot or vehicular traffic.
Weathering
Washout None
Cracking None
Discoloration Passes ASTM C-834
Notice
Sashco will test any stain to determine compatibility
with Conceal. Call us for details.
The data reported here are believed to be reliable.
No warranty is made or implied concerning the
accuracy or the results obtained from their use.
CONCEAL
®
COVERAGE RATES
Joint
Width
Recommended
Joint Depth
LINEAL FT.
Per
5 gal. pail
Per
29 oz.
cartridge
Per
10.5 oz.
cartridge
1
/4
”
1
/4
”
1540 70.0 25.7
3
/8
”
1
/4
”
875 39.8 14.6
1
/2
”
1
/4
”
750 34.1 12.5
5
/8
”
3
/8
”
410 18.6 6.8
3
/4
”
3
/8
”
280 12.7 4.7
1”
1
/2
”
195 8.9 3.3