Cost of Fixing Salt Damp


We understand that there is a lot of confusion and misinformation regarding the cost of fixing salt damp.   And whilst a free inspection and quote is helpful we get that you are researching firstly to determine if it’s within your budget.    Or maybe a building inspector has just alerted you to an issue in a house you are considering buying and you need to know what it will cost to fix.

Our aim with this article is to provide you with up-to-date honest and reliable information to help you budget for your project and understand the hidden costs involved.

Please remember that this is a guide only.  It is not a quote and prices will vary at your property. 

Firstly there a few things to consider:

  1. Is your problem definitely Salt Damp?
    It is worth reading our checklist first. Click here to read. Often the issue relates to another form of damp, condensation, mould or musty smells and so therefore these costs won’t apply.
  2. Will maintenance fix the Salt Damp?  Are there other tasks around the home that will fix the issue?  For e.g. Could you lower the pavers and expose the existing damp proof course?   Or could you improve the issue with increased drainage?
  1. Will you be removing these walls in the next 1 -3 years?
  2. And lastly how badly affected are the walls?  In some rare occasions it may be impossible to inject a wall for structural reasons and it will therefore need to be rebuilt first.


Now let’s get down to the reason you are still reading… what is the cost of fixing Salt Damp?     Our advice relates to the injection of a waterproof cream barrier to the base of your walls to prevent the rise of moisture and salts.

The cost of injection does vary significantly from property to property and is dependent on things such as:

  • Thickness of walls

    Treatment with cream is done from one side of the wall only regardless of the situation.  The price increases as the thickness of the wall increases.  A single brick wall is charged a lot less than a double brick / double brick with cavity.
    Price Guide:
    Single Brick                                                                  $70 – $95 per lineal metre
    Double Brick/Block                                                    $85 – $105 per lineal metre

  • Fabric of the walls

    There are many types of masonry and each has its own issues.   Limestone is more porous and may have greater damage but bluestone is harder to drill into and requires more product.
    Price Guide:
    Brick:                                                                                as above
    Block:                                                                               as above
    Stone below 450mm thickness:                                 $120 – $150 per lineal metre
    Stone above 450mm thickness:                                 $150 – $200 per lineal metre

  • Damage to the wall

    Treatment only stops further moisture and salt from rising into the wall.    After the initial treatment  follow-up internal and external repairs are required.  e.g. removing and replacing damaged plastering, removing and replacing damaged render, replacing missing mortar or badly affected stones.   These costs should be considered in your overall budget and you should request a quotation for these at the time of inspection.  The amount you pay for these repairs will be determined by the client and is dependant on how far you wish to take the repairs.  Some people only wish to repair damaged areas others wish to restore the home fully.    Dependent on the damage too some tasks will take a couple of days others will take a few weeks.

  • Height of the problem

    Salt Damp normally does not rise any higher than 1 metre.   However, sometimes the issue has been left for a long time and the height of the problem has risen beyond what is considered normal.   The repairs of this could therefore cost more.

  • Number of metres
    You may find also the more metres you do the less it will cost.     Also a minimum charge to cover setup may apply.


As with any building project there are additional costs which may be relevant in your situation and these should therefore by factored in.   These can include (but are not limited to).  It is important to ask about these at the time of your onsite inspection.
– Removing and replacing power points, data points and telephone points.
– Removal , refitting and/or replacement of skirting boards and tiles
– Temporary relocation of air-conditioning unit
– Painting / flushing joints
– Generator Hire
– Rubble / Waste removal

There is a lot to consider yes.   But by using a fully licenced and trusted professional the fear and uncertainty regarding the treatment and repairs should be less.       An onsite inspection, fixed price quotation and discussion with professionals should give you all the information you need for your project.

Ready to get a quote? – click here to request a call to organise a time. 

Is it Salt Damp? – A Quick Checklist

Have you seen some damage to your walls and thought “Is it Salt Damp?”, then this Checklist is just for you.

So grab your IPad, load this checklist, and start to have a look around your home.  Start at the beginning.   Are the first 3 statements true?  If not, then it is unlikely the issue is Rising Damp and Salt Attack but another form of damp. But don’t despair … give our office a call on 813221166 and we can try and assist you further or point you in the right direction.

If they are true then keep reading.   Do any of the Exterior and/or Interior statements match the issues you are seeing around your building?  If yes, jump on your phone and give us a call.  We can get your sorted in no time at all.

Is it Salt Damp? – Firstly:

  •  Was the property built before 1978?
  • Is there an obvious damp proof barrier at the base of the wall between foundation and bricks? This could be black plastic, kiln fired bricks or tar. If one exists does it appear to be functioning?
  • Are the symptoms occurring on the first floor of the building only – Is the damp below eye level?

Is it Salt Damp? – Exterior Signs:

salt damp on external brick wall

  • Exterior damage to wall (as mentioned below) from ground level to maximum height of about 1m
  • Brick faces have “blown” off or crumbled away
  • Stones have begun to crumble and erode
  • Gaps between bricks and /or stones begin to appear
  • Mortar is “dusty” and / or crumbling between your stones and or bricks.
  • A dark or wet stain is evident at the base of the wall (particularly during wet weather)
  • Vents appear to be clogged with dirt / mud or there are no vents at all visible in wall or partially covered by paths or paving.
  • Render is bubbling or breaking away from the wall surface.
  • White furry salts (efflorescence) is appearing on the wall

Is it Salt Damp? – Interior Signs:

salt damp on internal wall

  • Plaster inside is damp and /or bubbling and breaking away from the wall surface
  • Paint inside is damp and / or bubbling and blistering off the wall.
  • Tide line or a line of moisture appears at the base of your wall.
  • Wall is beginning to discolour
  • White furry salts (efflorescence) is appearing on the walls
  • Skirting boards are beginning to rot or appear damp
  • Damage and / or dis-colouration is appearing at the base of the walls up to a maximum height of about 1m
  • Damage is not localised to a small patch behind a bathroom / toilet / laundry / kitchen

Think you may have salt damp then give us a call or click here and we can arrange a time to come out for a free inspection.

General Notes:

The above information is a guide only. Often these signs could indicate a different damp related issued. It is therefore best to always consult with a professional and request a free onsite inspection. At the time of inspection they will be able to determine if you have a problem with Salt Damp and the best means of rectifying the issue.

Be very wary of contractors who are happy to quote over the phone to fix a salt damp issue without inspecting your property. It will be impossible for them to advise over the phone if it is salt damp or an issue from a pipe leak, roofing issue, lateral damp or sub-floor ventilation.