Damp Course Fluid

Damp Course Fluid

DCF (Damp Course Fluid) is a silane/siloxane-based impregnant specifically formulated to permeate into wet walls, resulting in a dampcourse that’s fluid bonded. Once impregnated into a course of brickwork, DCF reacts with the minerals present to form a durable polysiloxane damp course which permanently stops rising damp.

Tech-Dry DCF was developed and tested at the Victoria University of Technology Building Protection Science Unit. It has been used in over 30,000 successful damp course installations Australia-wide, both in domestic and commercial properties as well as some important heritage buildings since 1982. DCF is used to install a durable polymer damp course into brickwork or other masonry walls to permanently stop rising damp.

For more information on how to install the Damp Course Fluid, click here.

We also offer a DIY Applicator Kit for easy use.

Not sure if you should go for the Damp Course Cream or the Damp Course Fluid?
Check out our fact check and make an informed decision, here.


  • Penetrates deeply into bricks, mortar and other masonry substrates.
  • Forms polysiloxane damp course that’s permanently fluid bonded within the substrates.
  • UV, alkali stable and durable formulation.
  • Reduces water penetration, salt migration and other water-borne staining.
  • Non-dangerous, non-corrosive and non-toxic formulation.
  • Easy application and cost effective.
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