The cost of salt damp treatment depends on how much wall is affected, what the wall is made of, how thick it is, and whether it needs damp course injection or undersetting. Injection is usually the cheaper and quicker option; undersetting costs more because the damaged base of the wall is taken out and rebuilt. The only way to get a real price is to have the wall looked at, which is why Statewide inspects and quotes for free.
What drives the price
- Which fix the wall needs. Injection drills and fills a new damp course into sound masonry. Undersetting removes and rebuilds crumbling brick or stone in short sections, so it takes more labour and materials.
- How much wall is affected. Treatment is priced along the length of wall that needs a new damp course, inside and out.
- What the wall is made of. Brick, sandstone and bluestone behave differently, and old walls are often a mix. Matching brick or stone has to be found for undersetting.
- How thick the wall is, and whether it is a solid or cavity wall.
- Access. Paths, paving, garden beds, verandahs, kitchens and built-in cupboards against the wall all change how the work is done.
- What happens to the plaster. Salt-damaged plaster and render usually come off so the wall can dry; putting the finish back is part of the overall cost.
- The cause. Sometimes part of the fix is simple: lowering a garden bed, clearing a vent or fixing a leaking downpipe.
Why we quote on site
Two walls that look the same in a photo can need very different work. On site we check what the wall is made of, how far the salt has gone, whether the damp course has failed or been bridged, and what else is feeding the damp. Not all dampness is rising damp, and we would rather tell you that than sell you a treatment you do not need.
The inspection and the written quote are free, in Adelaide and country South Australia.
Our price promise
We will beat any written quote for undersetting or injection, using only premium safe clean products. Ring around, then ring us.
Is salt damp expensive to fix?
Fixing it early is the cheaper path. Salt damp does not go away on its own: the salts keep breaking down the masonry, so a wall that only needs injection today can need undersetting later. Patching, sealing or rendering over it usually adds cost, because the damp climbs higher and the work has to be redone.
Questions about cost
Is injection always cheaper than undersetting?
Usually, yes, but injection only works where the brick, stone and mortar are still sound. If the base of the wall has crumbled, injecting it will not fix the damage, and undersetting is the right job. How to tell what you have
Will a DIY kit save money?
Sometimes, on a small, sound wall where the cause is clear. The common problems are injecting at the wrong height, leaving gaps, and replastering or painting before the wall has dried, which means paying twice. What you can do yourself
Get a free written quote
Ring Barry on 0417 818 845 or send us your details, and we will come out, look at the wall and give you a written quote.