Commercial Concrete Leak Repairs


Phone: 0427 427 183

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Crack injection is commonly used in residential and commercial applications primarily because it is far less expensive than excavating a foundation and waterproofing the exterior foundation wall, floor slab, carpark, tunnel, bridge, pit, channel, drain. There is also no need to remove tiles and other finishes from the surface in order to fix leaks. Crack injection is the most reliable leaking crack repair system when done properly.

Used to repair leaking concrete joints / cracks in - concrete carparks, tunnels, bridges, water treatment plants, pits, dams, tanks, apartment buildings, undergound cellars, retaining walls, factories, tilt slab concrete constructed buildings, and more.  



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We have 4 x 7000 gal concrete tanks for storage.Two of the tanks, poured on site more than 30 years
ago, had numerous and extensive cracks all leaking at a disastrous rate.
Many of the cracks were several metres in length, some from top to bottom of the tanks, some radial and some diagonal.
After many attempts at DIY repairs including internal concrete buttressing and paint-on solutions, the tanks were still so leaky that we were faced with having to put in new ones, a very difficult exercise as we had no suitable areas to put them in.
With only half our average rainfall in 2014 and a hot, dry summer predicted, water was becoming a big issue.
We had Tankshop look at the situation and decided to go ahead with their method and after 19.5m of cracks had been treated we were amazed that almost all the leaks had stopped completely.
Two months after the treatment all the leaks have dried up totally and show no sign of weeping at all. We are completely amazed at the effectiveness of this treatment on what were otherwise useless tanks fit only for demolition. Thankyou Tankshop!
8 years ago now we repaired the tank below - still going strong !!!!
2013 - Hello Darren
Just a quick email to thank you for a super professional job on our tank. I was skeptical about your method when everyone else wanted to remove the cover, drain the tank and paint it or put in liners or dig it out of the slope or otherwise spend many thousands of our money and make us move out of the house for a few weeks (hotel ?). But dealing with you was a pleasure, you did everything you said you would and the results are amazing. There are no leaks now, the tank seems very happy and we are happy having spent well under liner install pricing including your transport and GST. You were here half a day including clean-up of your tools.
I would be very happy to endorse your service based on our excellent experience.
All the best
Brian Dermott
Mansfield, Victoria.
Topchix Poultry P/L, 2012
TENNIS BALL SIZED HOLE RIGHT THROUGH TANK WALL - November 2012 - Darren ( Tankshop ) came to Somerville, Victoria to repair our 120,000 litre concrete water tank, the tank had a number of leaks but the most severe was the hole right through the tank, tennis ball diameter size. We thought we were up for a new tank. The customer service was great. An Amazing result !! Topchix Poultry P/L
Jenny Senior reviewed Tank Shop — 5 star
November 24, 2016·
Had Bad water leak in 25 yr old concrete tank, with water spouting from it , and crack running full length of tank .All fixed now ,thanks to Tankshop, Quick efficient service ,highly recommend.
Jamie Corney reviewed Tank Shop — 5 star
June 28, 2018 ·
Just had our leaking concrete water tank repaired by Darren very happy with the result. We initially tried to fix it ourselves with a product from the local hardware store which cost over $150. which was a waste of time and money. thanks Darren a job well done.
Ross Galt reviewed Tank Shop — 5 star
April 28, 2017·
My 40,000 litre concrete tank had a slow leak from a crack extending the full height of the wall and finally deteriorated to the extent that there was a steady flow of water streaming from it. TheTankShop came and repaired the leak quickly and efficiently and the crack which had been damp for years is now completely dry. Very pleased with the result and would highly recommend TheTankShop.
2011 - Good afternoon Darren,
I just wanted to let you know that the repairs that you did to the Concrete Water Tank up at Yinnar South have done the job. It is now nearly full again after all the rain and it shows no sign of leaking or seeping. I must admit that I did not think that you would be able to repair without emptying the tank and doing it from the inside as well as out as one of the lower cracks was quite large but you proved me wrong. Your repair work has saved me a lot of trouble and considerable expense and I thank you for a job well done. I certainly would have no hesitation in recommending the effectiveness of your repair process.
Kindest Regards
Michael Emsley Dip FS (Brok), QPIB, Snr Assoc ANZIIF
James Wiltshire Pty Ltd

Injection Leak Sealant - was used to repair a cooling tank at the Geelong Galvanising Plant. The process was carried out on all visible cracks from the inside of the tank reservoir, as you can see from our photos. The cooling tank is used after the steel is removed from the furnace to cool the steel once galvanised. The water temperature inside the tank can be up to 90 oC once steel has been cooled.

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Flexible Pressure Injection Sealant - Very Strong - Durable - Long Term Repairs

(Food Grade - Potable Water Approved as per Australian Standards)

Applications include: all things concrete cracked and leaking.

Pools – cracked concrete

Cellars – for both concrete and shotcrete structures

Retaining Walls – for both concrete and shotcrete structures

Basements – for both ground slab and ceiling slabs

Concrete Retention Tanks

Lift Shafts – concrete, shotcrete and bride and block


Concrete Roofs – all cracks and joints can be sealed

Concrete Water Tanks – all leaks can be sealed whilst tanks are full

Crack injection is used in Civil Construction and maintenance of Civil Assets due to its flexibility in application and its reliability in repairing cracks and damage in concrete structures. Polyurethane crack injection is the most efficient and cost effective method in repairing leaking cracks in major concrete assets.

Applications include:

Civil Water – treatment plants, town water supply, pump stations, channels, canals

Sewage Treatment Plants – high voltage electrical pits, man holes, chemical storage areas

Dams – diversion tunnels, dam walls, permanent plugs, dam walls, weirs

Tunnels – rail, road, access and electrical

Underground Structures


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Commercial Projects Completed

City Councils - Fire Concrete Water Storage Tank, Leak Repairs – Latrobe, Mornington, East Gippsland.

Goulburn Valley Water - Header Tank for the Township Buxton, Victoria, Leak Repairs.

Gippsland Water - Water Reservoir Channel Wall Repairs. Warragul Waste Water Treament Plant.

Apartment Buildings - 461 StKilda Rd Melbourne, Carpark Concrete Leak Repairs.

Concrete Tank Manufacturers – Leak Repairs – Dawson’s, Economy, Amco Group.

Commercial Business – Geelong Galvanising

Rural farms – Dairy, Produce, Market Garden, Irrigation, Beef, Sheep, etc.

Horse Properties – Racing, Hobby, Equestrian Centres, etc.

Irrigation Companies

Fire Water Storage – Sprinkler Systems, Factories, Commercial Buildings.

Commercial Water Storage Facilities


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Geelong Galvanising Plant – Concrete Cooling Pit Repair

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Warragul Waste Water Treatment Plant - For Gippsland Water

Repair of concrete cracks - UV treatment pit for recycled water. 








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461 St Kilda Rd Melbourne, Apartment Carpark - Leaking Concrete Crack Repairs









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WE TRAVEL TO YOU - PHONE US FOR A QUOTE - Victoria, NSW - Areas we have travelled to - Pakenham, Warragul, Traralgon, Sale, Bairnsdale, Orbost, Mallacoota, Eden, Bega, Leongatha, Korumburra, Wonthaggi, Yarram, Foster, Welshpool, Inverloch, Fish Creek, Lang Lang, Koo Wee Rup, Catani, Bayles, Pakenham South, Omeo, Geelong, Colac, Camperdown, Warrnambool, Portland, Hamilton, Mortlake, Inverleigh, Cressy, Halls gap, Horsham, Ararat, Dimboola, Ballarat, Kilmore, Kyneton, Gisborne, Lancefield, Romsey, Daylesford, Castlemaine, Bendigo, Dunolly, St Arnaud, Avoca, Stawell, Maryborough, Wedderburn, Inglewood, Wycheproof, Sea Lake, Ouyen, Mildura, Broken Hill, Robinvale, Swan Hill, Kerang, Echuca, Shepparton, Seymour, Yarrawonga, Wangaratta, Benalla, Euroa, Heathcote, Alexandra, Mansfield, Bright, Albury, Wodonga, Wagga Wagga, Jerilderie, Deniliquin, Balranald, Corryong, Myrtleford, Swanpool, Strathbogie, Taggerty, Marysville, Healesville, Warburton, Hoddles Creek, Seville, Cockatoo, Emerald, Monbulk, Yarra Glen, Toolangi, Flowerdale, Kinglake, Woori Yallock, Noojee, Powelltown, Maffra, Licola, Heyfield, Toongabbie, Walhalla, Tanjil Bren, Willow Grove, Lilydale, Kangaroo Ground, Whittlesea, Wallan, Strath Creek, Heathcote, Elmore, Neerim South, Jindivick and more.