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Name
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Blockade
Finisher
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Type
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One-Component
Cementitious Waterproof Coating for Concrete and Masonry |
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Application
Method
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Trowel
or spray applied. |
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Product
Overview
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Blockade
Finisher is a portland cement based decorative finish material designed
for application over portland cement and masonry surfaces. It provides
an ideal finish coat to brown coat or surfaces treated with Merlex Super
Blockade. It is a proprietary formulation of portland cements, graded
aggregates and chemical additives. The correct amount of co-polymer
powder is premixed in the bag, so only water is required to achieve
consistent waterproofing. |
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Benefits
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- Serves as
decorative colored surface as it protects, allowing textures such
as sand float finish, Spanish lace, machine dash and knock downs.
- Maximum protection
against leakage caused by moisture saturation.
- Prevents
moisture damage such as efflorescence, spalling, crumbling, and
discoloration.
- Mixes easily
with mechanical mixer at slow speed.
- Single component,
mixes easily with water only.
- Apply by
hand or machine.
- Long term
protection.
- Non-toxic,
VOC compliant.
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Placement
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Blockade
Finisher may be applied above or below grade. One coat is recommended
for the positive (source of moisture) side, or two coats for the negative
side. |
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Substrates
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It
is effective on plaster brown coat, concrete block, poured-in-place
concrete, precast concrete, tilt-up walls, brick and stone after Blockade
or Super Blockade parge coat. |
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Examples
of Use
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Recommended for
use as a waterproofing for traditional stucco systems, decorating and protecting precast concrete, cement plastered
walls, concrete foundations, block walls, brick structures, and any
other concrete, cement or masonry surface subject to damage from moisture.
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Components
and Storage
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Available
in 90 lb. (40.86 kg) bags, in white, oyster or gray. Merlex Add-A-Paks
may be added to achieve a wide range of designer colors. See the Merlex
Stucco color chart. Blockade Finisher must be kept in dry storage
area. Shelf life is one year properly stored. |
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Coverage
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Varies
with surface porosity, texture and application thickness. Trowel
applied at 3/16" (4.55 mm) thickness - over concrete: 6-10
lbs. per sq. yd.(2.3 to 3.8 kg/m2) Over cement
block: 12-16 lbs. per sq. yd. (4.6 to 6 kg/m2).
Spray applied Over concrete: 6-10 lbs. per sq. yd. Over
cement block: 10-16 lbs. per sq. yd. (3.8 to 6 kg/m2). |
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Surface
Preparation
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All receiving
surfaces must be structurally sound, clean, free of dust, dirt,
silicones, paint products, efflorescence or any other contaminant
which could hinder bonding ability. Allow new cement and masonry
surfaces to fully cure (approximately 28 days) prior to application.
Surface cracks, holes or voids should be repaired. Smooth or painted
surfaces must be cleaned in an abrasive manner (high pressure water
blast, scraping, sanding or sandblasting) to open surface pores
and allow for a good bond.
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Mixing
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Approximately
2 gallons (7.5 ltr) of clean potable water are required for each 90
lb. (40.86 kg) bag of Blockade Finisher. It must be mechanically mixed
at slow speed to produce a workable consistency suitable to your method
of application. |
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Application
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Blockade Finisher
should be applied to an approximate thickness of 3/16" (4.5
mm) .
Trowel
application: Evenly wet substrate with clean water to control
suction. Using hawk and trowel method, apply finisher evenly to
the substrate with enough pressure to ensure tight contact. Immediately
double back with second coat. When covering surface defects such
as grout lines, patches, or other conditions which may cause variation
in suction, allow the first coat to cure for 5 days before applying
second coat.
Spray
or Machine application: Two coats are necessary. Apply first
coat over a dry surface to produce complete coverage. Allow to cure
at least 24 hours prior to application of second coat. Note: Use
approved plaster spray equipment with maximum 150 feet of hose.
Do not use high pressure or airless spray equipment.
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Clean
Up
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Water
and detergent. Clean up spills and spatters before Blockade Finisher
dries. |
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Limitations
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Do
not apply over frozen or frost-filled surfaces. Do not use when ambient
temperature will fall below 40º F (4º C) within 48 hours after application.
Do not apply to traffic bearing surfaces. Allow Blockade Finisher
to cure for at least 7 days before filling spas, pools and tanks.
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Warranty
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Blockade
Finisher Cementitous Waterproofing is warranted to perform in accordance
with the product specification when used according to application
instructions on the label. This warranty is limited and shall not
exceed the total amount paid by the buyer for the product. In no event
will Merlex Stucco, Inc. be liable for loss of profits, special or
consequential damages in respect to any claim. The foregoing warranties
are in lieu of all other warranties express or implied including those
concerning fitness for a particular use. |
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Environmental
& Safety
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Blockade
Finisher contains portland cement and is alkaline on contact with
water. May be irritating to eyes and skin. Wear appropriate dust,
skin, and eye protection. In case of eye contact, flush immediately
with water, consult physician. Wash hands with soap and water after
use and before eating. Keep out of reach of children.
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Technical
Data
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| TEST |
METHOD |
RESULTS |
| Compressive
Strength |
ASTM
C-109 |
7
day: 2250 psi
28 day: 3800 psi |
| Tensile
Strength |
ASTM
C-190 |
7
day: 280 psi
28 day: 400 psi |
| Flexure
Strength |
ASTM
C-348-80 |
7
day: 675 psi
28 day: 1000 psi |
| Water
Absorption |
ANSI
A118.6 |
24
hour soak: 7.85% |
| Water
Beading |
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Excellent |
| Wet
Abrasion Resistance |
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Excellent |
| Accelerated
Weathering |
ASTM
G-23
(Carbon Arc) |
2000
hours: No surface cracking, blistering, flaking, chalking, crazing,
or any other deleterious effects.
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| Salt
Spray |
ASTM
B-117 |
No
effect after 300 hours. |
| Freeze/Thaw |
ASTM
C-67 |
50
cycles: Passed |
| Hydrostatic
Pressure |
ASTM
D-4068 |
72"
limit of water
Manometer: No leakage |
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