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DESCRIPTION
MEL-ROL LM (ALL SEASON) is
a single component, polymer modified, cold-applied, liquid waterproofing
membrane ideal for below-grade vertical applications. We have
taken the same high quality rubber polymers found in MEADOWS'
successful MEL-ROL "peel and stick" membrane, and converted
them into a heavy bodied, high solids, quick drying liquid membrane.
With MEL-ROL LM (ALL-SEASON), installation time is reduced, utilizing
either a spray or roller application.
USES
MEL-ROL LM (ALL SEASON) can be used on new and remedial waterproofing
applications on concrete or masonry block substrates. Application
can be performed in colder weather when water-based products cannot
be used.
FEATURES AND BENEFITS
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PACKAGING
5 gallon (18.93 liter) pails
55 gallon (208.20 liter) drums*
*special order only
PHYSICAL PROPERTIES
| MEMBRANE | ||
|
Color Solids Total Cure Time Application Temp Coverage |
Black 65% 48 hrs 10° F (-12° C) Minimum 17-20 sq. ft./gal. |
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Shore "00" Hardness Adhesion to Concrete Low Temp Flex & Crack Bridging Stability Tensile Strength, psi Elongation Water Absorption WVT |
Passes Exceeds Passes Exceeds 30 1000% <0.5% 0.06 Perms |
ASTM C-836 ASTM C-836 ASTM C-836 ASTM C-836 ASTM D-412 ASTM D-412 ASTM D-1970 ASTM E-96, B |
SURFACE PREPARATION
Do not apply to "green" concrete. Concrete must be cured
a minimum of 14 days prior to application, and must be free of
all coatings and curing compounds. Do not apply to polystyrene
insulation boards or insulated concrete forms (ICFs).
All surfaces must be clean and dry, free of frost, relatively smooth and structurally sound. Patch any bug holes, tie holes, large gaps or cracks with MEADOW-PATCH® 5 or MEADOW-PATCH 20 from W. R. MEADOWS. All loose laitance on the substrates, such as dirt, dust, loose stones and debris should be either swept or blown clean.
All shrinkage cracks less than 1/16" should be pre-treated with a 60 mil coat of material 6" (1.5 mm) wide. All cracks greater then 1/16" should be pre-treated with W. R. MEADOWS DETAIL STRIP prior to application of the membrane. For specific project recommendations, please contact W. R. MEADOWS technical services.
MIXING/CONDITIONING
MEL-ROL LM (ALL SEASON) is designed to be used from the pail or
drum with little or no mixing. For spray applications, store the
material at room temperature or heat material to a minimum of
50° F (10° C) prior to application.
PRIMING
To reduce potential blistering on poured concrete foundations,
a thin primer coat of the material may be required.
Prime the entire concrete surface to be waterproofed by spraying or rolling on a single coat of MEL-ROL LM (ALL SEASON) at a coverage rate of 100-150 sq. ft./gal. Allow primer to dry approximately one hour prior to application of the coating.
DETAILING
After surface preparations are complete, detailing should be addressed.
The desired thickness of membrane coverage is 120 mils for inside/outside
corners and non-moving and hairline cracks, as well as around
drains and penetrations.
ROLLER APPLICATION
MEL-ROL LM (ALL SEASON) can be applied directly from the container
using a ¾" nap roller. Apply in two coats, each 40
mils thick, allowing first coat to reach initial set prior to
application of second coat.
SPRAYING APPLICATION
MEL-ROL LM (ALL SEASON) should be sprayed at a minimum thickness
of 80 mils wet (45 mils dry). A single coat may achieve desired
coating thickness. However, if material slumps due to temperature
or substrate conditions, two coats (40 mils wet) may be necessary.
For horizontal applications, please contact a W. R. MEADOWS representative at 1-800-342-5976.
Coverage
| Application Rate | 17 - 20 sq. ft./gal. |
| Wet Film Thickness | 80 mil |
| Cured Film Thickness | 45 mil (1.15 mm) |
THICKNESS CONTROL
Frequently inspect surface area with a wet mil gauge to ensure
desired consistent thickness is achieved. Porous substrates or
masonry block walls may require additional coats to obtain desired
thickness.
SPRAYING EQUIPMENT
For detailed information on spray equipment recommendations, use
and clean up, please refer to W. R. MEADOWS technical
bulletin #05-724-A, or the softbound catalog.
CLEAN UP
Cleans up easily while wet with mineral spirits, paint thinner,
or aromatic solvents. Cured material is best removed with aromatic
solvent or by mechanical means.
PROTECTION
Allow membrane to cure a minimum of 48 hours prior to application
of a protection course. Membrane should be covered within 30 days
after application. Cover with PROTECTION COURSE, MEL-DRAIN™
or 10 mil PERMINATOR® from W. R. MEADOWS. A prime coat of MEL-ROL LM
(ALL SEASON) or beads of POINTING MASTIC can be used to secure
the protection to the wall.
Polystyrene insulation boards can be applied only if the membrane has thoroughly cured (72 hrs. minimum) and there is no danger of residual solvent degrading the boards.
BACKFILLING
Allow 48 hours for complete cure of membrane prior to backfilling.
SHELF LIFE
12 months in unopened container. Do not store in temperatures
over 100° F (38° C).
PRECAUTIONS
Do not use indoors. Use with adequate ventilation. No open flames.
Do not apply if rainfall is forecast or imminent within two hours.
Do not apply to polystyrene insulation boards or insulated concrete
forms (ICFs), as the solvent will attack the boards. Keep containers
tightly sealed.
HEALTH & SAFETY
Recommended for outdoor use only. Avoid ignition sources. Avoid
direct contact with this product. Product is combustible; avoid
prolonged breathing of vapors. Utilize appropriate personal protective
equipment including chemical resistant gloves, eye protection,
and/or respiratory protection. Consult product material safety
data sheet (MSDS) for complete health and safety information.
Flash point: 103° F (39° C).
This material last updated November, 2005.
