How to Guide

SELF-LEVELING UNDERLAYMENT
Electric Mat Systems Installed Over Substrate – Mat system
configurations can vary by system manufacturer. Contact system
manufacturer for installation instructions.
Hydronic Systems Installed Over Substrate – TEC
®
Skill Set™
Self Leveling Underlayment may be used in conjunction with
hydronic systems installed over concrete or 3⁄4" single layer
plywood/OSB subfloors with lath. Follow the requirements for
each substrate stated above and maintain minimum thickness of
self-leveling underlayment over the heating tubes of 1⁄2"
(depending on the diameter of the tubing, two lifts of self-leveling
underlayment may be required). When installing ceramic tile
over hydronic systems the application of a crack isolation
membrane over the self-leveling underlayment is recommended.
Hydronic Systems Embedded in Concrete Substrate – Follow
the requirements for concrete substrate installations stated
above and maintain minimum thickness of concrete over the
embedded heating tubes of 3⁄4". When installing ceramic tile
over hydronic systems the application of a crack isolation
membrane over the self-leveling underlayment is recommended.
Metal Substrates: Suitable metal substrates include non-
galvanized steel, stainless steel, copper, aluminum and lead.
Metal substrates must be fully supported, firmly attached and
rigid with no flexing or vibration. In addition to the General
surface contaminants listed above, metal surfaces shall be free
of rust or corrosion. Remove by sand blasting, wire brush or
other mechanical means. To prevent rusting of unpainted steel,
prime with TEC
®
Skill Set™ Self Leveling Underlayment Primer
immediately after surface cleaning.
Instructions for Mixing
For best results, maintain all tiling materials, substrates, room
and adhesives at 50°-70°F (10-21°C) for 24 hours before and 48
hours after installation. Avoid breathing dust and contact with
eyes and skin. Add powder to liquid for ease of mixing.
In a clean mixing container, slowly add product to 5 quarts clean,
cool water and mix with a high power drill (650 RPM). Mix
thoroughly for two (2) to three (3) minutes. Scrape container's
sides and remix to ensure a smooth, lump-free consistency.
Application
Immediately after mixing, pour TEC
®
Skill Set™ Self Leveling
Underlayment onto the primed substrate. Spread into place with
a long-handled, gauged spreader or smoother covering all high
spots on the floor. Working time is approximately 15-20 minutes,
depending on ambient temperature and relative humidity of air.
High temperatures and low humidity will shorten working time.
TEC
®
Skill Set™ Self Leveling Underlayment can be applied
from a 1 ⁄16" up to 1" depth in a single application or up to 2"
with two applications.
(Wait until walkable hardness between coats. If waiting 6 hours or
more between applications, surface of first layer must be primed
with TEC
®
Skill Set™ Self Leveling Underlayment Primer.)
Drying Time
TEC® Skill Set™ Self Leveling Underlayment dries to walkable
hardness in 2 to 4 hours. Most floor coverings can be installed in 12
to 16 hours. In hot, dry or drafty conditions protect the installation to
avoid fast water loss while curing. Never use forced air to
accelerate the drying of TEC
®
Skill Set™ Self Leveling
Underlayment. Colder temperatures and higher humidity will extend
cure times. For best results, always test performance of finished
floor systems prior to installation.
Clean-up
Wash tools, hands and equipment with warm soapy water while
material is still fresh.
6. WARRANTY
For details about our limited warranties, see your sales associate or
tecskillset.com.
7. TECHNICAL SERVICES
Technical assistance
Information is available by calling the Technical Service Helpline.
Toll Free: 800-832-9023
Fax: [phone]
Technical and safety literature
To acquire technical and safety literature, please visit our website at
tecskillset.com.
©2013 H.B. Fuller Construction Products Inc.
Form # TSSMPP R1014-16
1105 South Frontenac Street
Aurora, IL 60504-6451 U.S.A.
tecskillset.com
TEC and Skill Set are trademarks of H.B. Fuller
Construction Products Inc.