What this site is, and what it is not

Why a site like this exists at all

Almost everything written about concrete injection online is published by somebody selling it. That does not make it false, but it does shape it: the failure modes get less space than the benefits, the situations where the repair is the wrong choice get left out, and the numbers that would let a reader check a quote are rarely printed.

A page written by nobody with a crew to keep busy can say the awkward parts out loud — that polyurethane bonds poorly to wet concrete, that hydrophilic resin shrinks when a crack dries out, that a great many enquiries about injection are really drainage problems. Those are the pages here that get read most, which is probably the point.

What it covers

Sealing defined water paths through concrete and masonry: cracks, construction and cold joints, kicker joints, tie-bolt holes, honeycombing, and curtain injection into the ground behind a wall. The building stock, ground conditions and climate described are South East Queensland's, because that is where the material was gathered and because the geology genuinely changes the answer.

It does not cover concrete cancer repair, rising damp treatment, balcony or rooftop membrane replacement, or general remedial building. Those are separate trades. Where a symptom points at one of them, the relevant page says so and names the trade rather than bending the problem toward injection — fifteen of those situations are written up in full.

How it is funded, stated plainly

The enquiry form passes submitted details to a licensed waterproofing contractor, and that referral is what pays for the research and the hosting. Knowing that is the right way to read the site: it has an interest in you eventually needing a contractor, and no interest in which repair you choose, because it does not sell any of them.

Using the form is entirely optional and nothing on the site is gated behind it. Every page can be read, printed and taken to whichever contractor you like.

How to check whoever does quote you

The site cannot vouch for any contractor, so it does the more useful thing and sets out what to verify yourself. These apply to anybody quoting this work, in any state.

• A current contractor licence in the right class for the work, checked on the public register for the state the job is in — QBCC in Queensland, NSW Fair Trading across the border.
• Certificates of currency for public liability and workers compensation, dated, before work starts.
• A written scope that names the resin family and the product, not just the phrase “polyurethane injection” — the resin choice is the decision that most determines whether the repair lasts.
• A stated basis for the price: per linear metre of crack, per crack, or per job. Three quotes cannot be compared until they are on the same basis.
• Written verification steps and what happens if the leak returns, agreed before the work rather than after — what those terms usually mean.

Corrections

Technical pages age, standards get revised, and figures quoted from manufacturer literature change. If something here is wrong or out of date, the enquiry form reaches a person who can have it corrected. Sources and standards are named on the page rather than gathered into a bibliography nobody reads, so a claim can be checked where it is made.