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 reduces 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.
- Reduces moisture transmission by 75%-90%
- Mold and mildew resistant
- One coat coverage
- Comprehensive warranty applies with proper adhesive useFast cure, same day installation for wood and resilient flooring over concrete
- Pre-measured portions to ensure proper mixing ratios
- Gallon size covers 400 square feet for gold warranty or 250 square feet for platinum warranty
- Easy to mix and apply
- Less expensive than vinyl moisture barriers
- 10-year residential warranty; 5-year commercial warranty
- Cure time is approximately 4-6 hours at 70°F
- Adhesion promoter
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 12 lbs./24 hours/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.
Ventilation:Titebond 531 contains solvent. Positive cross ventilation is required at all times. Extinguish all pilot lights and flames prior to mixing or applying.
Titebond 531 must be used in conjunction with 991 adhesive for wood flooring moisture mitigation.
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