Waterproofing in Melbourne: Balconies, Showers, Bathrooms and Roofs
A ceiling stain under a balcony or a leak in a flat-roofed building doesn’t always mean the membrane has failed. Victor is personally qualified in waterproofing (Certificate III in Construction Waterproofing, trained in NSW). We find the real source first, then waterproof balconies, showers, bathrooms, gutters, roofs and rooftops properly, and water test the result, across Melbourne and towns within about 2 hours.
Call us: 03 8583 2640 or 0426 204 244
Personally qualified in waterproofing
I’m Victor from Holy Mess Repairs, and I’m personally qualified in waterproofing (Certificate III in Construction Waterproofing, trained in NSW). Waterproofing isn’t a side line for us. We waterproof leaking balconies, showers and bathrooms, gutters, roofs and rooftops: anywhere water is getting in. We use Sikaflex, or whatever membrane you request.
Find the source before you redo the membrane
Re-waterproofing a whole balcony is expensive, so it’s worth knowing it’s the cause first. We use moisture and thermal scanning and dye testing to confirm where the water gets in. Sometimes it’s the membrane. Sometimes it’s an air-conditioning drain, a penetration or a flashing next to it.

Waterproofing we do
- Balconies that pond or leak into the rooms below
- Showers and bathrooms that leak into walls, floors or the rooms below
- Gutters that need a membrane lining
- Flat and membrane roofs, including ponding and failed sealant at penetrations
- Rooftop plant and equipment stands, sealed with a flexible membrane at each leg
- Box gutters and parapets: see box gutter repairs
- Evidence for builder warranty and insurance claims on newer homes

How it works

- Tell us where the water shows up. Photos and videos of the stain, the balcony or the roof area help us a lot.
- We find the real source. Moisture and thermal scanning and dye testing, so we fix the right thing. Sometimes it isn’t the membrane at all.
- Options and a price. A free phone estimate, then a written document with the likely scenarios, what each costs and the warranty.
- We waterproof it properly. Remove the failed material, prime and apply the right membrane for the area.
- Water test and photos. We water test and document every spot.
Real Melbourne waterproofing jobs
- Richmond: cracked sealant around twelve rooftop plant stand legs was letting water into a commercial building. We strip the old sealant, prime, apply a 2 mm polyurethane membrane and water test each spot, for $2,827 including GST.
- Doncaster: a bedroom ceiling fell under a ponding balcony on a near-new home. Prepared from the owner’s photos, the quote covers scanning, dye testing, membrane repair, ceiling restoration and evidence for a builder warranty claim.
- Travancore: forensic testing in a strata building found a new cause, a cracked air-conditioning condensate drain, separate from the balcony membrane failure found earlier.
- Ivanhoe East: three options for a 14-unit flat metal roof with split sealant at penetrations and ponding: $29,345, $39,876 and $48,678 plus GST.
Real quotes and reports from our jobs
These are real quotes and reports we sent to customers, published with their permission. Names, street addresses, contact details and claim numbers are blacked out. Click a page to open the full PDF.
Report
Waterproofing compliance certificate · Ringwood North VIC
Waterproofing compliance certificate and site audit for a building in Ringwood North with a profiled metal roof deck and roof-mounted plant. It records old water stains but no active leaks after rain, plus the polyurethane sealing at joints, fixings and pipe penetrations and the isolator pads under equipment brackets, with a compliance and warranty statement.
Quote
Flat metal roof remediation · Ivanhoe East VIC
Three-option quote for a 14-unit apartment block in Ivanhoe East with a flat sheet-metal roof. Working from an earlier defect inspection report, we priced fixes for split sealant around roof penetrations, ponding water, unsupported ventilation equipment and missing roof turn-downs, at $29,345, $39,876 and $48,678 plus GST.
Pre-arrival estimate
Balcony waterproofing leak + ceiling restoration · Doncaster VIC
Quote for a balcony waterproofing leak in Doncaster, where the master bedroom ceiling below a ponding balcony cracked and fell after heavy rain. Prepared before attending from the owner’s photos, it covers moisture and thermal scanning, dye testing, membrane repair and ceiling restoration, plus evidence for a builder warranty claim on the near-new home.
Insurance
Air-con condensate leak vs balcony membrane · Travancore VIC
Forensic leak investigation for a strata apartment building in Travancore. Water kept dripping into two units on hot days. Our testing found a new, separate cause: a cracked or disconnected air-conditioning condensate drain in the unit above, which is different from the balcony membrane failure found earlier. This helped the owners corporation direct the repair and the claim correctly.
Quote
Rooftop waterproofing around 12 plant stand legs · Richmond VIC
Detailed waterproofing quote for a commercial rooftop in Richmond. Cracked sealant around twelve rooftop plant stand legs was letting water into the building. We strip the old sealant, prime, and apply a 2 mm flexible polyurethane membrane, then water-test and document each spot, for $2,827 including GST.
Areas we cover
We cover all of Melbourne, plus the towns within about a 2-hour drive of the city:
- Geelong, Bellarine and Surf Coast: Geelong, Lara, Ocean Grove, Queenscliff, Torquay, Anglesea and Colac
- Mornington Peninsula: Frankston, Mornington, Rosebud and Sorrento
- West and Ballarat: Melton, Bacchus Marsh, Ballan and Ballarat
- Macedon Ranges and Goldfields: Sunbury, Gisborne, Woodend, Kyneton, Daylesford, Castlemaine and Bendigo
- North: Wallan, Kilmore, Seymour and Euroa
- Yarra Valley and Yarra Ranges: Lilydale, Yarra Glen, Healesville, Warburton, Kinglake and Marysville
- West Gippsland and Latrobe Valley: Pakenham, Drouin, Warragul, Moe, Morwell and Traralgon
- Bass Coast and South Gippsland: Phillip Island, San Remo, Wonthaggi, Inverloch and Leongatha
Not sure if your town is in range? Call 03 8583 2640 or 0426 204 244 and ask.
Why Holy Mess Repairs
- Licensed roof plumbers. Victorian licence 32176, on the Victorian Building and Plumbing Commission register.
- Insured through BizCover.
- Around 4.4 stars from 120+ Google reviews.
- Photos of everything. You see the problem before we fix it and the result after.
- Prices before we start. You choose the option.
- Warranty that matches the work.
HOLYMESS PTY LTD · ABN 31 666 327 813
How we quote
Call or email us and I’ll give you a free estimate over the phone. There’s no fee for the estimate. Once you’re happy with it, we send you a written document that explains what to expect, the likely scenarios and what each one costs, plus the quality of work and the warranty. That way you know exactly what you’re getting before we arrive.
Send us photos and videos on WhatsApp: 0426 204 244. Send as many as you can. The more we see, the more accurate the estimate.
Melbourne waterproofing FAQs
Does a leak under my balcony mean the membrane has failed?
Not always. We’ve found air-conditioning drains, penetrations and flashings causing leaks that looked like membrane failures. We test first so you don’t pay to redo the wrong thing.
How do you find a waterproofing leak?
With moisture and thermal scanning and dye testing, then photos and a written explanation of what we found.
Can you help with a builder warranty or insurance claim?
Yes. We document the cause with photos and testing, which you can use for a builder warranty or insurance claim. Whether it’s accepted is up to the builder or insurer.
Do you waterproof commercial roofs?
Yes, including flat roofs and rooftop plant stands on commercial and strata buildings.
Do you waterproof bathrooms and showers?
Yes. Victor is personally qualified in waterproofing (Certificate III in Construction Waterproofing, trained in NSW), and we waterproof leaking showers and bathrooms as well as balconies, gutters and roofs. We find where the water is escaping, remove the failed material and apply a new membrane, using Sikaflex or whatever membrane you request.
What waterproofing products do you use?
Sikaflex, or whatever membrane you request. We’ll explain the options in your written quote.
Are you licensed and insured?
Yes. We hold Victorian licence 32176 and we’re insured through BizCover.
Do you cover my town?
Yes, if you’re in Melbourne or within about a 2-hour drive. That includes Geelong, the Bellarine, Torquay, the Mornington Peninsula, Ballarat, Bendigo, Castlemaine, Kyneton and the Macedon Ranges, Seymour, the Yarra Valley, Healesville, Warburton, Warragul, Traralgon, Phillip Island, Wonthaggi and Colac. Not sure? Call 03 8583 2640 and ask.
Can I see your work before I book?
Yes. Visit our Reservoir showroom and warehouse at Unit 10, 236–244 Edwards Road, Reservoir VIC. It’s open 6am to 6pm, 7 days. Call ahead and we’ll make sure the right person is there.
Do you charge for a quote?
No. Call or email us and we’ll give you a free estimate over the phone, with no fee for the estimate. Send photos and videos on WhatsApp to 0426 204 244 and we’ll follow up with a written document setting out the likely scenarios, the cost of each and the warranty.
Find the leak, then fix it
Send us photos and videos on WhatsApp to 0426 204 244, or call for a free phone estimate.
Call Victor and the team: 03 8583 2640 or 0426 204 244
Visit our Reservoir showroom and warehouse: Unit 10, 236–244 Edwards Road, Reservoir VIC 3073. It’s our working base. Crews load materials there, our equipment and machinery are stored there, and the office is upstairs. There’s also a separate showroom where you can see examples of our roofing, plumbing and renovation work and meet the team. Open 6am to 6pm, 7 days. No booking needed, but call ahead and we’ll make sure the right person is there to meet you.
Holy Mess Repairs · 19 Chivers Rd, Templestowe VIC 3106 · Showroom and warehouse (call ahead): Unit 10, 236–244 Edwards Road, Reservoir VIC 3073 · Serving Melbourne and towns within about 2 hours