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PCD 91

End-grain protection for pressure treated wood

PCD 91 2.5L packaging
  • Protects against insect and fungal attack even in humid environments
  • Maintains the preservative treatment of pressure treated wood
  • Non-film forming - ready to use and easy to apply
  • Excellent penetration of any class 3 and 4 cut, bored or notched ends
  • Improves adhesion of coatings - prevents peeling and flaking

PCD 91 is a water-based, end grain preservative for wood that has been pressure treated to classes 3 and 4. Applying PCD 91 to any exposed cut, bored or notched ends will maintain the integrity and preservation of the wood due to it’s high wetting properties.

Available in Green, Brown and Clear PCD 91 is ready to use and easy to apply, whether used on site or in a workshop environment.

Ideal for using on decking, cladding and garden furniture, PCD 91 is perfect for use on all wood pressure treated to classes 3 and 4.

Ideal uses for PCD 91

  • Protects against insect and fungal attack even in humid environments.
  • High wetting properties means excellent penetration of the cut end.
  • On all wood pressure treated to classes 3 and 4.
  • Maintains the integrity of pressure treated wood.
  • Compatible with all 1 and 2 pack finishes.

Always read the PCD 91 Product Information before using and follow the instructions carefully.

Surface preparation

Surface must be clean, dry and free of dirt, grease, grime and any previous finishes.


Brush, roller or spray

Apply a liberal saturating coat to all exposed cut, bored and notched ends.
Wipe off any drips or runs.
Allow to dry.


Soak wood for 5 minutes.
Drain off excess PCD 91.
Allow to dry.
PCD 91 is a preservative. It does not replace a finish.
After the 48 hours drying time, pressure treated wood should be finished with Seasonite or another Owatrol product suitable for new timber to reduce the effects of weathering – greying, splitting, warping etc as a result of sudden exposure to sun and rain.
PCD 91 is compatible with any single or 2 pack finish.

Clean Up

All that is required for clean up is water.

Things to remember

Apply between 5°C and 35°C.
Shake gently to avoid product frothing or stir thoroughly before and during application.


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This coverage indication is only a guide and actual coverage is dependent on surface type, age, porosity etc.
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Coverage: 5-7m2 per litre
Tools: Brush, Roller, Airless Sprayer, HVLP, Dipping
Suitable for: Exterior use
Clean up: Water
Drying Time: 48 hours @ 22°C
Compatible with: 1 & 2 pack finishes
Suitable Surfaces: All wood pressure treated to classes 3 & 4

Technical Data

Read the full technical information including MSDS for PCD 91 on our corporate website.