Titebond® 531 Moisture Control System solves the challenges of moisture transfer from concrete subfloors to wood flooring by reducing the transmission rate of moisture.
The system consists of two pre-measured components that are mixed together to form a coating that is applied to the concrete surface. The easy-to-use formula will reduce the moisture vapor transmission rate from concrete subfloors by 75%-90% depending on the coat weight and coverage per sq. ft. applied of Titebond 531.
When used as directed with recommended Titebond wood flooring adhesives, Titebond 531 is fully warranted. It dries fast, is tack-free overnight, has a low odor and eliminates the need for bead blasting or other inconvenient measures. In addition, it helps reduce the potential for mold and mildew growth caused by subfloor moisture. Titebond 531 provides the professional installer with a cost-effective, convenient system designed to reduce concrete subfloor moisture in wood flooring installations.
- Resists mold and mildew
- Warranted with recommended adhesives
- Significantly reduces moisture transmission
- One coat coverage
- Easy to mix and apply
- One self-contained package
- Pre-measured portions to ensure proper mixing ratios
- Lower cost per square foot than competitive products
- Complete installation directions on containers
- Trowels easily
- Gallon size covers 400 square feet for Gold Warranty or 250 square feet for Platinum Warranty
- Quart size covers 100 square feet for Gold Warranty or 62 square feet for Platinum Warranty
- Less expensive than vinyl
- 10 Year Residential Warranty; 5 Year Commercial Warranty
- Cure time is approximately 4-6 hours at 70°F
- Adhesion promoter
- Low odor
All substrates must be clean, dry, structurally sound, properly cured and free of dirt, oil, paint, old adhesive, wax, sealers and curing agents. General scouring with 20 grit or #3 1/2 open-coat sandpaper will remove most compounds. All loose materials must be vacuumed from the surface after scouring.
For installation of wood flooring products (Engineered, Solids, Bamboo and Laminate), the subfloor must be flat to a tolerance of 3/16" in a 10' radius. Hollow spots, popping spots and squeaks are related to unevenness in the subfloor. Grinding concrete floors is preferred over the use of filling compounds. If filling/leveling compounds are used, they must be portland based cementious materials and have a compressive strength equal to or greater that 3000 psi when cured. Use of Titebond 531 over light weight concrete and all gypsum based materials requires the use of Titebond Concrete Primer or equivalent prior to application of adhesive. For further information on Titebond Concrete Primer, contact Franklin Technical Service at 1-800-347-4583. Remove all existing base, shoe molding and door thresholds prior to continuing the installation.
For the installation of resilient flooring products (Vinyl, VCT, Rubber Tile, LVT, etc.), remove all existing base, shoe molding and door thresholds prior to continuing the installation. Apply Titebond 531. After it has cured, apply a 1/4" thick layer of portland based cementitious material (with a compressive strength equal to or greater that 3000 psi when cured) to create a porous substrate. Follow cementitious materials manufacturer's recommendations for application to Titebond 531. The subfloor must be flat to a tolerance of 3/16" in a 10' radius. Vinyl applications are covered by the Gold Warranty only. See Gold Warranty for details.
Moisture Content Limitations-Gold Warranty Only
All applications are subject to moisture and should be tested for moisture prior to installation. Titebond 531 should be used on all concrete substrates where a calcium chloride reading is below 12lbs./24hours/per 1000 square feet. Concrete subfloors with a reading over 12 lbs. must be allowed to dry out prior to using Titebond 531. Do not install Titebond 531 on below-grade installations. There are no moisture content limitations when terms of the Platinum Warranty have been met. Refer to warranty section for complete details.
Moisture Testing-Gold Warranty Only
All applications are subject to moisture and should be tested for moisture prior to installation. Moisture testing must be completed and recorded PRIOR to using the Titebond 531 for the Gold Warranty to be obtained. Concrete subfloor that exceeds 12 lbs./1000 sq. ft./24 hours per a Calcium Chloride Test (ASTM F1869) or 85% relative humidity (RH) when tested with an in situ probe (ASTM F2170) should be allowed to dry out before applying Titebond 531 unless terms of the Platinum Warranty have been met. Do not install Titebond 531 on below-grade installations. There is no moisture content testing or limitations when terms of the Platinum Warranty have been met. Refer to warranty section for complete details.
Titebond 531 contains solvent. Positive cross ventilation is required at all times. Extinguish all pilot lights and flames prior to mixing or applying.
DO NOT THIN. DO NOT HAND MIX. Begin mixing both components in the Part A pail using a power mixer (e.g. 1/2" drill and paint or plaster paddle). Mix thoroughly for two minutes. Once Titebond 531 is completely mixed, the working time is 30 minutes. The portions are pre-measured to assure optimal performance. DO NOT MODIFY OR ESTIMATE.
Apply Titebond 531 directly to a clean and dry surface. Minimum required coverage is 4 mils wet film thickness (400 sq. ft. per mixed gallon unit; 100 sq. ft. per mixed quart unit) for Gold Warranty and 6.5 mils wet film thickness (250 sq. ft. per mixed gallon unit; 62 sq. ft. per mixed quart unit) for Platinum Warranty. Apply with a 3/8" nap roller immediately after mixing. Pour a "wet-line" approximately 3" wide the length of the room and spread with a roller. The product may also be used from a pan. Avoid excessive pressure on the roller so that an adequate amount of material will be spread. Excessive pressure will thin the material application. For best results, when using gallon size, divide the area into 4 sections and use 1/4 of the mixed product in each section. Do not extend the coverage as this will result in a voided warranty. Working time is 30 minutes once completely mixed.
For best results, do not apply Titebond 531 when the temperature is below 65°F. Temperatures below 65°F may lead to increased curing time. Additionally, applications below 65°F. are subject to a phenomenon known as "blushing", which is an oily or waxy coating that can cover Titebond 531. If blushing occurs, it must be wiped with a solvent and allowed to dry. Follow solvent manufacturer's directions when working with solvents and other flammable materials. Do not apply Titebond 531 if temperatures exceed 100°F. Applications exceeding 100°F will result in the product curing too quickly, which may jeopardize the quality of the bond to concrete.
Flooring may be installed over the Titebond 531 after the product is tack free or about 4-6 hours at 70°F. Be aware that temperatures below 65°F may increase curing time. Do not attempt to install flooring over Titebond 531 after 72 hours. If installation is delayed beyond 72 hours, the subfloor must be lightly abraded using a buffer. Clean the floor thoroughly before applying adhesive. For questions, call Franklin Technical Service at 1-800-347-4583.
Fresh coatings and tools can be cleaned with mineral spirits. Follow solvent manufacturer's directions when working with solvents and other flammable materials.
- Do not install on below-grade installations
- Do not apply below if temperatures exceed 100°F
- Do not install flooring over Titebond 531 after 72 hours
- Not to be partially mixed - follow the recommended directions