Reviews
From homeowners across Brisbane.
4.9
★★★★★
average across 160 Google reviews
◆AS 3740 / AS 4654
tested and certified
◆QBCC 0000000
Lic. + insured
◆Insured
to $20M
◆4.9★
160+ reviews
◆Warranty
10-yr on the membrane
★★★★★
“Three quotes, and Sealline was the only one that traced where the water was actually coming from before quoting. The stain was nowhere near the leak. They stripped the ensuite, re-membraned it to AS 3740, flood-tested it and gave us the certificate. Dry for a year now.”
— Sarah M., Coorparoo
via Google · Mar 2026
★★★★★
“Our balcony was bubbling and the ceiling below was staining. Priya found the falls were running back toward the house. They corrected the fall, re-membraned to AS 4654 and detailed the drain properly. The number on the quote was named by the square metre, no vague lump sum.”
— David & Jo R., Bulimba
via Google · Feb 2026
★★★★★
“New build, two bathrooms and an ensuite. Sealline did them all to AS 3740, named the system and the coats on the quote, flood-tested each one and handed over the certificates so the build signed off without a hitch. Easy to deal with.”
— Aimee W., Carindale
via Google · Apr 2026
★★★★★
“We are a body corporate with a leaking podium deck over the car park. They scoped it, staged the work around residents, and re-membraned the buried sections to AS 4654. The certificate and the warranty went straight into our building file.”
— Newstead Rise Body Corporate, New Farm
via Google · Feb 2026
★★★★★
“Our basement was damp every wet season and the last mob just painted it. Sealline assessed where the water was coming from and tanked it from the inside with a proper negative-pressure system. First wet season since and it is dry.”
— Glenn H., Chelmer
via Google · Dec 2025
★★★★★
“Tiny heritage bathroom in a Queenslander, and they still did it properly: bond breakers at the corners, the upturns to height, flood-tested before the tiler came back. The quote named the Standard, which none of the others bothered to do.”
— Helen & Rob K., Paddington
via Google · Nov 2025
★★★★★
“Bayside balcony taking all the salt. They talked us through which membrane stands up to the exposure, did it over the sound tiles where the leak was just the grout, and saved us a full strip-out. Honest about what it did and did not need.”
— Marcus T., Wynnum
via word of mouth · Jan 2026
★★★★★
“Water was coming through a downstairs ceiling and nobody could work out from where. Sealline traced it to a cracked deck membrane two rooms over, not the bathroom we all assumed. Fixed the actual cause once. Worth every cent of the diagnosis.”
— Tony & Maree S., Kenmore
via Google · Jan 2026
★★★★★
“Render kept blowing off the wall behind our courtyard planters. They emptied them, re-tanked with a membrane rated for constant water, detailed the drainage and reinstated them. No more damp wall behind. Tidy, careful crew.”
— Little Quay Apartments, Newstead
via Google · Feb 2026
Sealline Waterproofing is a composite reference site, so the reviews above are illustrative and not real customers. On a live build this page would show verified Google reviews from real Brisbane jobs, with the rating and the count carried through from the business profile.
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✓ QBCC Licensed Waterproofing✓ Accredited membrane applicator✓ Licensed & insured✓ 160 five-star reviews✓ 10-year membrane workmanship