Rising Damp Treatment Cost Calculator & Price Guide
The cost of rising damp treatment in Australia usually depends on the repair method, wall construction and how easy the wall is to access. Using this price guide, rising damp repair can range from about $220 per metre for a chemical damp proof course in a single-brick wall up to $500 per metre for a physical damp proof course, before any access loading, with a minimum job charge of $1500 AUD.
Estimate rising damp treatment cost
Damp proof course midpoints per linear metre in Australia. Rates cover the chemical injection or a physical damp course. Stripping salt-damaged plaster, replastering, and repainting are extra. Fixing a high garden bed or the drainage is usually extra.
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Rising Damp Treatment Price Breakdown
Typical job based on 10 m. Prices are supply-and-install midpoints — actual quotes will vary.
| Type | Cost per m | Typical 10 m job |
|---|---|---|
| Chemical course, single brick | $220 | $2,200 |
| Chemical course, double brick | $360 | $3,600 |
| Physical damp course | $500 | $5,000 |
What Affects Rising Damp Treatment Cost?
- Treatment method: The biggest pricing driver is the type of rising damp treatment used. A chemical damp proof course costs $220/m for single brick or $360/m for double brick, while a physical damp course is $500/m.
- Wall construction: Single-brick and double-brick walls are priced differently because the installation work changes with wall thickness. Chemical rising damp repair is cheaper in single brick at $220/m than in double brick at $360/m.
- Access to the wall: Access multipliers increase the base rate when the wall is harder to work on. Clear access along the wall uses ×1, tight side or paving uses ×1.2, and treating from both sides uses ×1.4.
- Job size and minimum charge: Your total is based on wall length in metres, so longer affected walls cost more overall. If the calculated price is low, a minimum job charge of $1500 AUD applies.
Rising Damp Treatment Cost - Frequently Asked Questions
Rising damp treatment starts at $220/m for a chemical damp proof course in a single-brick wall. It increases to $360/m for double brick and $500/m for a physical damp course. Access can then raise the rate using ×1.2 for tight side or paving, or ×1.4 if treatment is needed from both sides.
For a typical 10 m job with clear access, the midpoint prices are $2200 for chemical course single brick, $3600 for chemical course double brick, and $5000 for a physical damp course. The displayed estimate range is shown at ±20% around those midpoints: $1,760-$2,640, $2,880-$4,320, and $4,000-$6,000 AUD respectively. The minimum charge would not apply in these examples because all totals are above $1500.
A chemical damp proof course costs $220/m for single brick and $360/m for double brick. If access is restricted, those rates are multiplied by ×1.2 for tight side or paving, or ×1.4 where treatment is carried out from both sides. Small jobs may still be charged at the $1500 AUD minimum.
Yes. The base damp proof course rate is adjusted by access: clear access stays at ×1, tight side or paving increases the rate to ×1.2, and treating from both sides increases it to ×1.4. That means even the same wall length can cost noticeably more when access is limited.
Salt damp treatment is commonly priced using the same wall-length method as rising damp repair, with the final cost depending on the damp proof course approach and wall type. For pricing in this guide, chemical treatment is $220/m for single brick and $360/m for double brick, while a physical damp course is $500/m. Access multipliers and the $1500 AUD minimum charge can also affect the final total.
The minimum job charge is $1500 AUD whenever the calculated metre rate and access adjustment produce a lower total. This is most relevant on short wall lengths or smaller isolated repairs. Once the calculated amount goes above $1500, pricing follows the normal per-metre rates.
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