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Cementitious Water Proofing with Drizoro – Bowens Product Review

 Swimming Pool

In this month’s edition, we look at how Drizoro products have been used to waterproof a large in-ground pool and wine cellar. Michael Pollock from Privilege Homes is in the middle of building a custom 93 square, high-end residence in Mt Eliza. A major challenge for Michael was related to the waterproofing of a large 15m x 6m wine cellar that will hold 5,000 bottles and an adjoining 103,000 litre swimming pool. Not only is the property sloping but there is also a large perspex window in-between the cellar and the pool. As you can imagine, finding a waterproofing solution for both these areas was a high priority. Michael has been a customer of Bowens for many years and his account manager is Michael King from the Hastings branch. When the scale and complexity of the waterproofing requirements became evident, Andrew Healey, a Product Innovations Specialist at Bowens was called upon to come and visit the site. As Andrew explains: “Michael knew that he needed waterproofing. He was looking at a few solutions but when we explained how easy it was to apply Drizoro and the fact that it could go onto a wet wall, that really ticked a lot of boxes for him.” Michael agrees, saying that is was huge plus to be able to apply Drizoro to green concrete and not have to worry about full curing. This was especially the case as he had started the initial waterproofing process in the middle of winter. “We can apply Drizoro the day after concreting which speeds up the whole construction process,” says Michael. Bowens invited Bruce Leslie, the Australian distributor of Drizoro from Scientific Waterproofing Products, to visit the project and advise on the correct solutions. As Bruce explains: “We are dealing with many different surfaces including concrete block, concrete shotcrete and wood. Pipe protrusions coming into the pool were of particular concern as there would be vibration from pumps and water hammer which could cause issues.” Max Joint Elastic, a flexible waterproof membrane, was applied to the pipes. When the product sets, not only is it waterproof but it is highly flexible which is a huge benefit in this application. “Whilst we put Max Joint Elastic around the pipe we have a substrate that is very porous. We decided to use Max Seal Flex on the concrete to ensure we have water proofing continuity from the pipe all the way to the concrete”, says Bruce. Max Seal Flex can be used in a wide range of applications. For example, it can be used for waterproofing retaining walls, basement car parks, rainwater tanks, rooftop concrete balconies, fishponds and planter boxes. Bruce provided Michael with a full catalogue of waterproofing solutions, complete with specifications, for all his waterproofing requirements. This included the external walls of the cellar, which are up to 3 meters below natural ground. As part of the consultancy service, Bruce trained one of Michael’s builders, Jeremy Bire who was responsible for the application of Drizoro. Whilst it is a straightforward process to apply Drizoro, having the training available gave Jeremy the confidence to proceed on his own. Jeremy explains that: “Getting trained meant I had the right ratios of the mixing to make sure that it went on properly. With the guarantee of the product being in the installation being done correctly, it was very important to get that right”. Andrew Healey is available for site visits. He will step builders through the entire process so that they can be 100% sure they are using the right products for the job. For Michael, this training meant he could be sure of the correct methodologies being applied so there would not be any issues in the future. Michael says; “I like the fact that Drizoro is a cement-based product that sticks to cement. A lot of waterproofing products are acrylic based which don’t like it over time. I think it will be a great result at the end of the day.” Max Seal Flex is very versatile because it provides a negative pressure waterproofing solution. In areas that are difficult to access such as the back of a wall, you can still waterproof the wall by applying it to the front. Jeremy was keen to use Max Seal Flex on water tanks, which are a good example of this scenario.

Internal Old Garage

It was during the planning stages of an old garage conversion into a studio for a family home in Hawthorn that a serious water proofing issue became clear. The problem originated because the garage was recessed into the natural slope of the land and the back wall was sitting 1200mm below ground level. Andrew Healey, Product Innovation Specialist at Bowens explains, “We have all the ground level moisture wanting to push through the old brickwork and inevitably come into the floor of the garage. That water is now pooling and we have a huge issue.” Ian Stone, Site Supervisor for Long Contracting oversaw the garage conversion and needed to find a solution to the water issue before he could start. Ian got in touch with Kieran Ewbank, Bowens Account Manager at Port Melbourne. Ian explains that; “I told Kieran about the problem I was having with the moisture and how I had unsuccessfully tried to have it rectified. He put me in touch with Andrew Healey who told me about a new product that was coming to Bowens, Drizoro.” Ian initially tested the first product that was to be used which was Maxseal Flex and decided to go ahead. Maxseal Flex is a highly flexible cement based membrane that was applied to the wall with a brush. Two coats where applied to completely seal the wall and waterproof it. Ian was impressed and said that; “You didn’t have to try and dry the wall before you put the product on. Maxseal Flex can actually be applied to a wet wall which is ideal.” The second product that was used to waterproof the garage was Maxseal Foundation. Once the new concrete slab was poured, Ian’s concreter cast the Maxseal Foundation over the top of the wet concrete slab and trowel it in. Once the Maxseal Foundation was embedded into the concrete it stops the water rising up through the slab. As Andrew says; “Now that both the Maxseal Flex and Maxseal Foundation have been applied we have a completely waterproofed and membraned area. The result is that both the walls and the concrete slab have been waterproofed as well as the cold joint between wall and slab.” Another benefit of Drizoro is that it is easy for a builder to apply themselves. As Ian says; “I didn’t have to go outside to a waterproofing company to have this done.” Ian was so impressed that he went on to say; “I have no problems at all recommending Drizoro to other builders and in fact, I already have.” Bowens is commitment to introducing innovative building products to its customers. As Luke McEnaney, Group Sales Manager explains; “Innovation is critical to the continued growth of the building industry. We can’t simply continue to build houses in the same way as we traditionally have. Bowens is always seeking out new products to help our builders become more efficient and Drizoro is an excellent example of this.” To find out more information about the full range of Drizoro waterproofing solutions, either contact your fully trained Account Manager or visit your local Bowens branch.


Primo Pools

We have applied Maxseal flex from Drizoro to a suspended concrete shell pool subsequently rendered and tiled with success.

We have found Drizoro Products easy to apply and effective in long term performance.

In order to ensure that our customers receive value and long term quality, Primo Pools insist upon the most cost effective quality products, and best practices.