TAMKO TW-60 User Manual
TAMKO® TW-60
Self-Adhering Sheet Waterproofing Membrane
APPLICATION INSTRUCTIONS
SURFACE PREPARATION
Concrete-
The surface must be dry and have a smooth (not broomed) finish and be free of form release agents, voids and sharp protrusions. Forms should
be removed as quickly as possible. On a horizontal deck do not apply membrane when forms are in place, unless the forms are vented. Concrete
should be allowed to cure for a minimum of 7 days. Curing agents containing wax, oil, or pigment should not be used. Any holes or voids must
be repaired with non-shrink grout. Cracks greater than 1/16" in width shall be cut out to a minimum of 1/4" with a minimum depth of 1/4" and
sealed using a sealant suitable for use with rubberized asphalt per sealant manufacturer, prior to the installation of the sheet membrane. Note:
On masonry surfaces mortar joints must be flush to the face of the concrete block or brick and have a thorough parge coat.
Expanded / Extruded Polystyrene (EXP/XPS) or Insulated Concrete Forms (ICF)-
Ultraviolet radiation in sunlight causes a rapid deterioration of the EPS surface which can create a chalky or dusty layer which could interfere
with the membrane adhesion. If this occurs, or if the surface of the EPS is dirty, brush off the excess dirt and dust to provide a clean dry surface
for the application of the membrane. Joints and voids in the surface over 1/4" should be filled with non-shrink grout, expandable foam or
compatible crack filler.
Priming-
Priming is required on concrete and masonry surfaces, but may not be necessary on EPS/XPS and ICF surfaces that are clean and
dry and have not developed a dusty layer due to sun exposure. Select either TWP-1*** Primer or TWP-2 Water-Based Primer, as
appropriate, for the surface to be primed. DO NOT USE products containing solvents on EPS/XPS or ICF surfaces. Thoroughly mix the
primer. Apply at recommended coverage rates with a sprayer or long nap roller and allow to dry as specified in the primer's application
instructions. Drying times may vary according to weather conditions.
Flashing-
All penetrations and drains must be flashed with TW-60 membrane, extending the membrane a minimum of 6" on all sides. All cracks and
joints must be sealed with a sealant suitable for use with rubberized asphalt per sealant manufacturer, and flashed with a 12" wide strip of TW60 membrane centered on the axis of the corners.
HORIZONTAL APPLICATION
Starting at the low point of the surface and working to the high point, install TW-60 membrane by simultaneously rolling the sheet
into place while removing the release film. Side laps should be 2 1/2", and end laps should be 5". Stagger all end laps. All terminating
edges should be sealed with TWM-1 Mastic. Roll the entire membrane as soon as possible with a minimum 75 lb. garden roller
wrapped with indoor/outdoor carpet.
If a flood test is required by the design professional, it should be conducted before the application of a protection layer. Check for leaks
and make repairs immediately. Before flood testing be sure the structure is capable of withstanding the dead load of the water. Re-test
after repairs have been made.
When TAMKO TW-60 is utilized as a waterproofing membrane in accordance with TAMKO Waterproofing Construction Detail TW-10
"Typical Balcony / Entry / Breezeway Outside Edge Detail" flood testing of the installation is considered good practice. The decision
regarding necessity of a flood test is the responsibility of a design professional. When utilizing TW-60 as a waterproofing membrane on
horizontal applications for balconies - the balcony must have a built-in positive slope away from the wall.
VERTICAL APPLICATION
Install TW-60 Sheet Membrane in lengths of 8' or less. Overlap edge seams 2 1/2". On walls above 8', apply in 8' sections, starting
at the lowest point with the higher section overlapping the lower section 5". Use heavy hand pressure or a suitable roller to press
membrane firmly against wall.
Terminations when applying to a concrete surface:
TW-60 sheet should be installed over the top of a wall or over the edge of a slab. If the membrane must terminate on a vertical surface,
use a reglet or counter flashing. Press terminating edge firmly with a hammer handle or similar tool. Apply TWM-1 Mastic to all
terminating edges.
TW-60 Sheet Membrane shall be installed on the base of the foundation wall, over the edge of the footing and the terminating edge
pressed firmly against the vertical surface of the footing. Apply TWM-1 Mastic to all terminating edges including both vertical and
horizontal.
Note: Failure to use adequate pressure at terminating edges will result in poor seal, potential leak and may affect coverage under the
limited warranty. The use of mastic is not a substitute for a good seal.
Terminations when applying to EPS / XPS and ICF:
Apply a thick (min 3/8") bead of sealant suitable for use with rubberized asphalt and EPS / XPS and/or ICF per sealant manufacturer, at
the termination of the waterproofing membrane and smooth with a putty knife to seal the termination. A non-deteriorating termination
bar is required at the head of the waterproofing membrane.
MEMBRANE PROTECTION
Vertical surfaces must be protected immediately following installation of the membrane. Horizontal surfaces should be protected immediately.
If a flood test is required the horizontal surface shall be protected immediately following the flood test. If the flood test is delayed, a temporary
protection layer must be installed to protect the membrane from future operations and other trades. When TW-60 is utilized as a waterproofing
membrane in accordance with TAMKO Waterproofing Construction Detail TW-10 "Typical Balcony / Entry / Breezeway Outside Edge Detail"
flood testing of the installation is considered good practice. The decision regarding necessity of a flood test is the responsibility of a design
professional.
***WARNINGS AND HAZARDS
TWP-1 contains combustible solvents. Avoid exposure to sparks, open flame, heat, and other forms of ignition. Use in wellventilated areas. Avoid breathing vapors. Refer to MSDS for detailed product information and warnings.
TAMKO® TW-60
PRODUCT DATA
Self-Adhering Sheet Waterproofing Membrane
APPLICATION INSTRUCTIONS
(CONTINUED)
PROTECTION COURSE FOR USE WITH TAMKO TW-60 WATERPROOFING MEMBRANE
Horizontal Application Protection Course
For horizontal applications where membrane protection is required in TAMKO's application instructions, another manufacturer's protec-
tion course that is designed for horizontal installations may be used in conjunction with TAMKO's TW-60 waterproong membrane,
provided the minimum requirements shown below are satised.
Vertical Application Protection Course
For vertical applications where membrane protection is required in TAMKO's application instructions, another manufacturer's protec-
tion course that is designed for vertical installations may be used in conjunction with TAMKO's TW-60 waterproong membrane,
provided the minimum requirements shown below are satised.
Protection Course Minimum Requirements
Asphalt composition boards used as protection course shall comply with ASTM D6506 Standard Specication for Asphalt Based
Protection Board for Below-Grade Waterproong.
Cellular polystyrene insulation used as protection course shall comply with ASTM C578 Specication for Rigid, Cellular Polystyrene
Insulation, Types IV, V, VI, VII, X, or XII.
Fan-folded extruded polystyrene insulation used as protection course shall have compressive strength exceeding 15 psi when tested
in accordance with ASTM D1621 Test Method for Compressive Properties of Rigid Cellular Plastics and maximum water absorption
of 0.4% when tested in accordance with ASTM C272 Test Method for Water Absorption of Core Materials for Structural Sandwich
Constructions.
Plastic drainage panels used as protection course shall have puncture strength exceeding 50 lbs when tested in accordance with ASTM
D4833 Test Method for Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products.
BACK FILL
Back ll must be clean ll with no rocks, pails or wood. After back ll is in place, it must be tamped with a tamper to compress the ll.
REPAIRING MINOR DAMAGE TO THE TW-60 MEMBRANE
Patch Repair:
Minor damaged areas of TAMKO TW-60 Membrane that are no larger than 4" by 4" in size (e.g. tears, holes, shmouths, and delaminations) can be repaired by installing a patch of TW-60 extending a minimum of 12" beyond the damaged area on all sides.
End Lap Repair:
Loose end laps no wider than 4" can be repaired by cutting and removing the loose material and applying a patch that extends 12"
beyond the area on all sides.
A patch Repair or an End Lap Repair must begin with removal of dust, dirt, and other materials that may interfere with adhesion from
the area receiving the patch. Remove or cut non-adhered, torn, or otherwise damaged membrane as necessary, creating a fully-adhered
surface to receive the patch. The underlying substrate must not be damaged while performing a Patch Repair or an End Lap Repair.
Install the TW -60, applying sufcient pressure by hand or with a roong seam roller to promote adhesion to the underlying material.
Seal the edges of the patch by applying a 1/4" to 3/8" bead of TWM-1 mastic; smooth the bead with a trowel.
INSTALLATION OF TW-60 OVER PREVIOUSLY INSTALLED LAYER OF TW-60
A second layer of TAMKO TW-60 Self-Adhering Sheet Waterproong Membrane may be applied over an existing layer of TW-60
provided that appropriate surface preparation of the existing material is successfully accomplished.
As required for direct installation to a substrate, the surface of the existing layer must be free of dust, dirt and other materials or
conditions that could interfere with adhesion of the second layer. Irregularities in the installed TW-60 must be corrected prior to
installation of the second layer; this includes removing or cutting non-adhered, torn , or otherwise damaged membrane or surface lm.
Take care to prevent damage to underlying substrates, such as insulated concrete forms, with these types of corrections. Side and end
laps of the second layer must not coincide with side and end laps of the rst layer.
The decision for surface suitability of the rst layer is subjective and rests with the applicator; TAMKO assumes no responsibility for
improper application (refer to TAMKO Waterproong Limited Warranty) of the rst or second layer, including improper application
due to poor adhesion from an improper surface.
Upon installation of the second layer of TW-60, the rst layer of TW-60 is recognized as part of the assembly substrate and considered
"sold AS IS" and without warranty of any kind.
Failure to properly apply TAMKO TW-60 Self-Adhering Sheet Waterproong Membrane according to the Application Instructions may
affect coverage under the applicable 5-year limited warranty.
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