Innovative Tools Australia 230mm Concrete Puddle Flange Recessing Kit
Recess a PVC puddle flange flush into concrete in under 3 minutes - the 150mm and 230mm diameters cut in one dust-controlled pass on a standard 9-inch grinder. No jackhammer, no disc-swapping.
or 4 interest-free payments of $180.00 with 
· ex GST $654.55
Call (02) 8021 3517 before you order
Technical Sheets TDS, SDS & compliance certifications
Complete the setup
Top up on the discs, PPE and extras that finish the job. Tick what you need and add them in one go.
Watch it working
A quick look at the kit, then a full recess cut start to finish in concrete.
Overview30 second overview
What the 230mm Concrete Recess Kit does and what comes in the box.
DisksHow long do the disks last?
Explaining how long each of the disks last.
What's included
Premium diamond segments grind the 230mm outer rebate to depth.
Concentric to the 230mm disc - cuts the 150mm pocket and self-centres on your drain mark.
Encloses the disc and connects to your extractor for dust-controlled cutting.
Supplied with the kit so the discs, shroud and grinder are matched out of the box.
Stop grinding puddle flange recesses into concrete by hand
A recess in a slab used to mean a chalk line, an angle grinder and half an hour a hole. This kit sets the depth once and cuts the same recess every time.
Why it was invented
Cutting a recess into a slab freehand means an angle grinder, a chalk line and a cloud of silica dust. Depth is uneven around the circle and the finish depends entirely on who is holding the tool.
Where hand cutting goes wrong
A recess cut too shallow leaves the flange proud and the screed has to ramp over it. Cut too deep and you are into reinforcement. An oval recess leaves gaps the membrane has to span.
Why professionals use it
The depth is set before the tool touches the slab, so every recess comes out the same. Dust goes into the vacuum instead of the air, and the flange drops straight in.
Concrete kit vs the old method
How fast does it pay for itself?
Drag the sliders to match your work. Enter the recesses you cut and how much faster this kit is than the old jackhammer-and-grinder method.
Estimates only, based on your inputs. Actual time and savings vary by site, operator and conditions.
Where this tool gets used
Built for the wet areas and service spaces that have to stay dry.
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Bathrooms
Showers, hobs and floor wastes in domestic and commercial bathrooms.
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Balconies
Exposed decks and door thresholds where water has to drain away cleanly.
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Plant rooms
Wet plant and pump rooms where a floor waste has to sit flush.
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Lift pits
Pits that need a tanked floor and a drain that does not sit proud.
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Basements
Below ground slabs where drainage and membrane detail have to line up.
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Commercial kitchens
High traffic wet floors with multiple wastes and heavy cleaning.
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Hospitals
Wards, theatres and wet rooms built to a tight finished floor level.
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Apartments
Repeat bathroom layouts where every unit has to come out the same.
This kit takes out
Check it suits your setup
Two minutes here saves a return. This kit recesses puddle flanges into concrete slabs on a 9-inch grinder - confirm your grinder and substrate before you buy.
Technical specifications
Replace the disc, not the whole kit
When the disc reaches the end of its life (around 7 to 15 recesses on concrete, depending on hardness and aggregate), swap the diamond discs and keep using your dust shroud.
Built for concrete wet-area prep
Recess the flange flush into the concrete before membrane and screed.
External wet areas where the floor falls to the waste.
Handle different flange diameters across a job with one tool and one cut.
Replace a flange in a cured slab without hiring or hauling a jackhammer.
Or any standard PVC puddle flange, flush and ready for the membrane.
Fast, repeatable recesses with predictable disc life you can plan around.
Projects using this tool
Tap a project to see the products used, the process and the result.
Apartment build
Hospital upgrade
School refit
Commercial tower
Luxury home
Basement tanking
Frequently asked questions
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What grinder do I need, and is the 9-inch included?
The kit runs on a standard 230mm (9-inch) angle grinder. Buy it two ways: the kit alone if you already own a 9-inch grinder, or the bundle with a Makita 9-inch grinder. If you go kit-only, make sure your grinder is a 230mm / 9-inch machine, not a 100mm or 125mm.
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Will it fit my puddle flange, and does it suit the Allproof Leak Control flange?
Yes. It is built to recess standard PVC puddle flanges, including the Allproof Leak Control flange, and it cuts the two common diameters most waterproofers and plumbers set daily. If you run an unusual flange, check its outside diameter against the 150mm and 230mm cut sizes first.
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What diameter and how deep is the recess?
The dual-disc setup recesses the 150mm and 230mm diameters so the flange drops in flush, ready for the membrane and screed. Depth is set to bring the flange level with the surface - call us to confirm the exact depth for your flange.
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How many recesses do I get per disc, and can I buy replacements?
Expect roughly 7 to 15 recessed holes per disc. The range depends on concrete hardness, aggregate and your technique, so softer slabs sit at the top end and old high-strength concrete at the lower end. Replacement discs are available, so you only swap the disc, not the whole kit.
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Is this wet or dry cutting?
It is a dry, dust-controlled process using premium diamond segments, designed to run with dust extraction rather than water, so there is no slurry to deal with. Because it is a corded mains grinder, water is not used - dry on-tool extraction plus a P2 respirator is the correct control path.
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What vacuum or dust extractor should I pair with it?
Run it with an industrial dust extractor. For silica dust on concrete, an M-class or better (H-class preferred) extractor classified to AS/NZS 60335.2.69 is the compliant choice. A domestic or shop vacuum, even a HEPA one, must not be used.
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Can I recess an old or existing slab, or only fresh pours?
It is made for grinding a recess into concrete floors, including cured and existing slabs - that is the whole point of using diamond segments rather than forming a recess in a fresh pour. Harder or older concrete uses more disc life and sits at the lower end of the holes-per-disc range.
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Does it really only take about 3 minutes?
Yes - a recess is done in under 3 minutes with this kit, versus jackhammering and swapping multiple discs the old way. Real-world time varies a little with concrete hardness and operator experience, but sub-3-minutes is the benchmark.
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How do the two discs work for 150mm versus 230mm flanges?
The dual discs recess the 150mm and 230mm diameters at the same time in one operation, so you are not making two passes or swapping tooling mid-job.
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What warranty and support come with the kit?
It is supplied for professional waterproofing and plumbing use and is backed by The Waterproofing Shop for advice and support. Give the team a call before you order if you want to check it against your flanges or grinder.
Learn from the best in Australia!
Hands on training at our Sydney centre.
PREFLEX 3000 Installer Training – 1 Day Hands-On Course
All Things Waterproofing: Your Guide to Compliant Waterproofing Using FORSPEC and the Latest Construction Codes
ACTFLEX 5000 Installer Training – Self-Adhesive Sheet Waterproofing
FORSPEC Injection Systems – Crack Repair & Leak Sealing Training
The standards behind wet area work
AS 3740 and the NCC set out how wet areas are prepared and waterproofed in Australia. Here is what they ask for in plain English, as background for planning the job.
The Australian Standard that sets out which surfaces in a bathroom, ensuite or laundry are waterproofed, how far the membrane carries up walls and how falls and drainage are handled.
The Code sets the performance requirements wet area construction has to meet, and calls up AS 3740 as a way of showing those requirements are satisfied.
Not sure it suits your setup?
Call the team before ordering and we'll confirm compatibility with your grinder and substrate. Specialist waterproofing supplier - not a general hardware store.
Ready to recess faster?
Need advice first? Call the team and talk it through.