Damp-Proof Course Options in Adelaide

What damp-proof course options in Adelaide actually involves

The guide lists the four methods as options and does not rank them. The council fact sheet adds that not all walls can be injected, and that sometimes it may take a few treatments to make the damp course continuous. We state nothing about how well any method works, because no source we read does.

The salts

The fact sheet says a new course will stop new rising damp, but the wall fabric above it will still contain deposited salts from the decades of previous rising damp. The guide says that when salts abound, do not just insert a damp-proof course; also remove excessive salts from above it. A quote for a course alone leaves that question open.

Undersetting, and one line from the regulator

Consumer and Business Services publishes a document headed Building Work Supervisor Standard Registration Conditions with a section headed UNDERSETTING, whose scope reads: Removal and replacement of salt damp affected masonry incorporating a new damp proof membrane. That is the only salt damp wording we found in any regulator's page, and it says nothing about what injection, mortar or plaster work needs. The quotes page covers what to ask.

Ask the provider which method, why it suits this wall, and what the quote does about the salts already there.

Damp-Proof Course Options in Adelaide — common questions

What are the ways of putting in a new damp-proof course?

The guide lists undersetting with a mechanical course, slot sawing with a mechanical course, impregnation of a chemical course and active electro-osmotic damp-proofing.

Can every wall be injected?

No. The council fact sheet says not all walls can be injected, and that it sometimes takes a few treatments to make the damp course continuous.

Does a new course remove the salt?

No. The wall above it still holds salts from decades of earlier rising damp, and the guide says to remove excessive salts from above the course as well.