company tower banner
The Sansin Corporation Company Logo

The Sansin Corporation Stain Blocking Primer

Stain Blocking Primer is an exterior high performance, durable, low VOC primer. Designed as a stain-blocking sealer to minimize the “bleed through” of wood tannins and common household stains. Stain-Blocking Primer bonds to wood with resins that protect against the elements reducing damage by water and ultraviolet light degradation.

Product Type: Primer, Sealer, Waterborne Coating

Compatible Substrates & Surfaces: Wood

Features: Anti-Slip, Breathable, Dimensional Stability, Durable, Excellent UV Stability, Excellent Water Repellency , Low VOC, Odorless, Reduced Moisture Absorption, Stain Resistant

Application Method: Brush, Dip Coating, Spray

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Features & Benefits

Features
  • Environmentally friendly
  • Low VOC
  • Molecularly compatible, creating a monolithic bond with the wood
  • Excellent tannin stain-blocking
  • Excellent topcoat holdout
  • Non-flammable
  • UV protection
  • Made in Canada

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Cleanup
Soap & Water
Application

Recommended for use on new and old western red cedar and other wood species that have a high tannin content.

Preparation
  • Inspect wood surface for defects and make any necessary repairs.
  • Use Sansin cleaner and/or wash the entire surface with a minimum 3000 PSI pressure washer. Use clean water.
  • Sand the surface well using a 60-80 grit paper and random orbital sanders.
  • Follow by power washing, vacuuming or using compressed air for proper cleaning. Surface must be clean, free from dust, dirt, grease, wax or any existing coatings.

Application Methods

  • Dipping
  • Flood coating
  • Spraying; hand or automated high pressure spraying

Working Procedure

  • Shake well/mix well. Ensure all sediment is mixed.
  • Saturate the wood surface
  • Brush out any runs
  • Do not apply in heat of day or direct sunlight
  • Do not apply on wood that is warm to the touch
  • Can be applied on wood surface with moisture content up to 20%
  • Do not apply if rain or freezing temperatures are expected

Properties

Appearance
Opaque White Liquid
Odor
Low
Diluent
Water
Characteristics
ValueUnitsTest Method / Conditions
Specific Gravity1.25 - 1.30
Density10.6 - 10.8lbs/gal
pH8 - 8.5
Viscosity (Zahn #3)45 - 50seconds
Solids by Weight51.5 - 52.5%
Freezing Point-1.0°C
Drying Time (To Touch, 20ºC)45.0minutes
Drying Time (Between Applications, 20ºC)min. 4Hours
Coverage Pending to Penetration150 - 250sq.ft./ US gal
VOC (Actual)32.0g/L
VOC (Regulatory)98.0g/L

Safety & Health

Warning

Keep out of reach of children, if swallowed immediately drink two glasses of milk or warm water. Do not induce vomiting. Call physician immediately. Avoid contact with skin or eyes; flush with soap and water. Avoid breathing of vapor or mist. The information contained in this document is given in good faith based on our current knowledge. The use of the product is beyond the control of The Sansin Corporation, and no guarantees, expressed or implied, are made as to the result to be obtained if not used in accordance with the published Directions for Use. The Sansin Corporation does not assume any legal responsibility for use or reliance on same. This information must on no account be used as a substitute for necessary field tests, which alone can ensure that the product is suitable for the expected use. Before using any product, read its label.

Packaging & Availability

Packaging Type
Packaging

Available in 5 US gallon containers.

Storage & Handling

Storage
  • Store at a temperature of between +10°C and 30°C (50°F and 85°F). Keep containers tightly closed.
  • Longer drying time needed in high humidity or low temperature,Keep from freezing.