Self Leveling Underlayment Primer


TEC Skill Set™ Self Leveling Underlayment Primer is an acrylic latex-based primer designed to improve the adhesion and bond strength of TEC Skill Set Self Leveling Underlayment to the subfloor.

  • Ensures maximum adhesion to porous and non-porous substrates
  • Easy to apply with brush, roller, or push broom
  • Covers up to 400 sq. ft. per gallon
  • Dries to a clear finish in 1-3 hours
  • Solvent-free
  • May contribute to LEED® certification project points


Hide reviews

Rate this item

*Email (will not be published)

Terms and conditions

Download PDF

TEC® Skill Set™ Self Leveling Underlayment Primer Product Info


TEC Skill Set Self Leveling Underlayment (SLU) Primer works as a primer for TEC Skill Set Self Leveling Underlayment.


Key Benefits and Features

  • Easy to apply with brush, roller, or push broom
  • Enables installation of ceramic tile or natural stone directly to metal, gypsum underlayment, glazed tile (without scarifying) and well bonded epoxy coatings
  • Covers up to 410 sq. ft. per gallon (10.0 m2/L)
  • Dries to a clear finish in 1-3 hours
  • Solvent-free


1 quart (946 ml) jug     Product #70-5008-5121



Substrates Primer to
Water Ratio
(square feet/gallon)
Porous Concrete
(2 coats may be required for highly porous)
1:3 410
Gypsum Underlayments
(two coats required, ratios 1:3 and 1:2)
1:3 410
Wood 3:1 250
Concrete curing compounds
Full Strength 140


Suitable Substrates
Suitable for use over the following clean, dry, structurally sound and unpainted surfaces: concrete, cementitious backer units (CBU or cement board), exterior grade plywood, oriented strand board (OSB), adhesive residue (except tacky or pressure-sensitive adhesive), cold-rolled steel, existing ceramic tile, gypsum substrates-minimum tensile bond strength 72 psi (0.5 MPa), VCT or non-cushioned sheet goods if they are single layer only and well bonded to a substrate approved for tile. For specific recommendations on other substrates, please contact your TEC Skill Set representative.


DO NOT FREEZE: store in an unopened container in a cool, dry location out of direct sunlight and protected from weather


Shelf Life
Maximum of 1 year from date of manufacture in unopened package.


Do not apply over wet areas. Do not use in areas subject to hydrostatic pressure. Not for use as a sealer. Do not use as a final wear surface.


FIRST AID MEASURES: In all cases, seek medical attention if symptoms develop or persist. EYES: Flush with water for 20 minutes. SKIN: Wash with soap and water. IF VAPORS INHALED: Remove to fresh air. IF SWALLOWED: Do not induce vomiting. WARNING! This product contains chemicals known to the State of California to cause cancer, birth defects or reproductive harm. KEEP OUT OF REACH OF CHILDREN. For Medical Emergency Information, call 1-888-853-1758.

This Product Data Sheet has been prepared in good faith on the basis of information available at the time of publication. It is intended to provide users with information about and guidelines for the proper use and application of the covered TEC Skill Set brand product(s) under normal environmental and working conditions. Because each project is different, H.B. Fuller Construction Products Inc. cannot be responsible for the consequences of variations in such conditions, or for unforeseen conditions.

Physical Properties

TEC Skill Set Self Leveling Underlayment Primer
Physical State Acrylic emulsion
Open Time Varies with temperature and humidity
Color White, dries clear
Odor Nil
Viscosity Thin, liquid
Wt. per U.S. Gallon 8.8 lbs. ± 0.1 lb.
Wt. per Liter 1.06 kg ± 0.01 kg
Freeze/Thaw Stability None. Do not freeze.

Surface Preparation
Remove all surface contaminates such as oil, grease, floor finishes, wax and dirt. Remove adhesive by scraping until all that remains is a thin, transparent layer of adhesive residue. For detailed substrate preparation information, refer to TEC Skill Set Self Leveling Underlayment product data sheet.


Instructions for Mixing
For best results, room and product should be kept at 50° to 70°F (10° to 21°C) for 24 hours before, during and 48 hours after application. Mix TEC Skill Set SLU Primer in the ratios listed in the coverage chart.


Use a paint brush, short nap roller or a soft push broom to apply in an even, continuous film. Do not allow product to puddle.


Dry Time
TEC Skill Set SLU Primer typically dries in 1 to 3 hours and is transparent in color when dry. Cure times are based on 70°F (21°C) and 50% RH. Colder temperatures and higher humidity will extend cure times. Avoid excessive foot traffic and surface contamination.


Clean tools, hands and excess material immediately with water. Material that is cured is difficult to remove.

Technical assistance

Information is available by calling the Technical Service Helpline.

Toll Free: 800-832-9023

Don't Forget These

Self Leveling Underlayment

Quality tile underlayment product with easy pour application that seeks its own level. Prime surfaces with Self Leveling Underlayment Primer.

TotalFlex® Universal Tile Mortar

TEC® Skill Set® TotalFlex® Universal Tile Mortar is a polymer-modified high-performing mortar ideal for heavy and large format tile.

Get Answers for Your Tec Projects

Ask A Question

TEC® Power Grout®

TEC® Power Grout® maximizes grout performance while providing ease of use. It is highly stain resistant and provides strong, color consistent joints.