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WOCA Softwood Lye

SKU: 500225USSA

PRODUCT TYPE: Pre-Treatment

VENDOR: Woca Denmark


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  • Prevents yellowing of wood surface
  • Preserves the light colors of the wood
  • Requires after-treatment with oil or soap
  • Only suitable for softwood
  • Contains white pigments

*PLEASE NOTE * Due to the Sodium Hydroxide found in Antique, Driftwood and Softwood Lye, the product has been deemed hazardous by the Department of Transportation and requires special documentation and transportation. An $80.00 Hazmat Fee per 1 box (4, 2.5 Liter containers) is mandated by the Department of Transportation and is required for ground shipping. A signature is required for delivery.

IMPORTANT: Due to settings and color adjustments within individual computer monitors and hand-held devices, the color on your wood may or may not be achieved as shown in the color swatches. We encourage you to order a tester and apply it to a piece of your wood for verification.


WOCA Softwood Lye is used for lye priming of unfinished or freshly sanded interior woodwork such as floors, stairs, furniture, and panels. The priming prevents the wood from yellowing and enhances the natural grain of the wood, producing a white wash finish.

WOCA Softwood Lye may be used for all types of soft wood such as pine, spruce, and pitch-pine. When Softwood Lye is used on larch wood, an antique gray/brownish finish is created. Softwood Lye can not be used on hardwood. The final color will first be achieved after 1-2 months. Results vary.

*Note -Use of Softwood Lye may cause a greenish color initially, which will disappear in the course of time and fade to gray.


WOCA Softwood Lye Instructions

Wear suitable acid proof protective clothing, gloves and eye goggles for protection.
  1. The unfinished woodwork must be sanded finely (grit 100-120) and it must be completely clean and dry before application of the lye.
  2. Shake the container. Pour the lye into a plastic bucket and stir regularly to get a uniform result.
  3. Apply the lye undiluted with the WOCA Applicator in an even coat on the floor lengthwise. Apply at least 1 liter of lye to 110 square feet of wood. On vertically mounted woodwork, apply from bottom to top.
  4. After a drying time of 8 hours at 68˚F (the wood must be completely dry), de-nib standing fibers with a fine sanding polishing pad (green or maroon) before the final basic treatment. Subsequently, vacuum the floor.
  5. Finish the floor with Diamond Oi Active or Master Color Oil, or treat with Basic Soap or Natural Soap, White.
  6. Clean tools in water after use.

Download TDS

Product properties
pH-value 13-14
Declaration: Sodium hydroxide, water, white pigments, <5% non-ionic surfactants.
Density 1-1.1
Colors Contains white pigments
Drying time 8-12 hours.
Application tools WOCA Applicator, a nylon brush or roller
Plastic bucket
Cleaning of tools: Clean tools with water.
Disposal Dispose of contents/container to an approved waste disposal plant.
Shelf life 3 years.
Packaging 2.5 L
Storage +50-77 °F. Keep out of reach of children. Do not expose to heat (e.g. sunlight). Store frost-free during winter and cool during summer (max. +77 °F).

Why is there a Hazmat shipping fee for Softwood Lye?

Softwood contains Sodium Hydroxide, which has been deemed hazardous by the Department of Transportation. This classification requires special documentation and transportation. An $80.00 Hazmat Fee per 1 box (4 2.5L containers) or 8 testers is mandated by the Department of Transportation and is required. All Softwood Lye orders will be shipped using FedEx Ground and a signature is required upon delivery.

How do I place an order for WOCA Softwood Lye?

Softwood Lye can be ordered online or you by phone Monday - Friday at: 1-877-962 2645. 4, 2.5 liters or 8 testers can be sent in one box. The shipping fee will be the same for increments of 4 or 8 for testers. All Hazmat orders must be shipped using FedEx Ground, and someone will need to be present to sign for delivery.

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