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95% of showers can be sealed with our Standard Seal Service. “Leaking showers repaired - with no tiles removed"
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- Why Showers Leak
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- Natural Stone Care, DiaOseal specialises in the refurbishment, cleaning, polishing and maintenance of all natural stone surfaces.
- 12-Year Written Warranty, Your leaking shower will be professionally re-grouted and sealed and protected by warranty for over a decade. Free repairs.
- Where We Work, DiaOseal offers shower leak repair services in both Sydney - Metropolitan and NSW - Regional areas
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- Official Standards Broadening homeowners’ and tradespeople’s awareness of waterproofing (pdf).

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Glossary of Terms


Shower over bath sealing solution

9 POINT ASSURANCE - Our DiaoSeal standard seal service for a shower/bath is designed to stop water seepage behind and under the bath through the wall tile and bath edge junction, whilst guarding against moisture penetration through the wall tiles, tap penetrations, tile cracks and glazing crazes into the adjacent wall.  

more information

Download or print The Solution Product information sheet PDF_490kb


$495.00 Inc GST within Sydney / Melbourne

$595.00 Inc GST Within Macarthur region / Greater Melbourne Region

$695.00 Inc GST Central Coast / Hunter / Wollongong / Illawarra | Melbourne Regional - Loddon Mallee / Grampians / Barwon - South Western / Hume /Gippsland

Service time

Between 2.5 to 3.5 hours


12 Year Against Leakage

next steps

This is a fixed price service designed to stop existing shower leaks by preventing water seepage through the wall tile and bath edge junction. This service includes the regrouting of walls within the shower area. NO quotation required if all tiles are adhered (not loose or drummy).

Call 1300366569 to schedule your service appointment


Common service related FAQ's




Our DiaoSeal standard seal procedure, backed by our 12 year written guarantee against leakage.

Our exclusive DiaoSeal Standard Seal Service guarantees to STOP leaking showers and shower leaks at the source.

Step 1. The Appraisal

A fully trained and authorised DiaOseal waterproofing technician will assess the shower/bath or area in question, and explain the DiaOseal waterproofing process to the owner, resident or representative.
(NB: if any tiles are drummy, cracked or require replacement, then this is a separate procedure and an additional cost).

Step 2. Plumbing

A FREE shower water pressure test will be carried out to determine if there any plumbing faults within the shower breeching piece. If the shower leakage is caused by a plumbing issue, our technician will make arrangements to seal the shower once a qualified plumber has rectified the plumbing problem.

A full tap service will be carried out if required on standard spindle assemblies. This includes: ‘O’ rings, fibre washers, jumper valves and reseat.
(NB: This step is not possible if a gravity-feed hot water system is installed or where ceramic disc ware or mixers have been fitted).

Next, the tile penetration will be sealed to prevent any water behind the tap flanges entering into the wall cavity or down behind the tiles.

Step 3. Shower Preparation

Any previous attempts to seal the shower will be removed. Any silicone to the inside of the shower screen will be removed and the frame cleaned for a high performance neutral cure silicone sealant designed to resist the growth of mould and mildew in high humidity.

Step 4. Grouting

The technician will assess the existing wall grout for deterioration, cracks or missing grout. The DiaOseal Standard seal normally involves regrouting the shower walls with a smooth, flexible, mould-resistant grout.
(NB: if not cement grout, epoxy grout or an apparent risk of damaging the existing wall tile exists), however if the existing wall grouting is in excellent condition, this is omitted. If the walls are not regrouted, the technician will apply our DiaOseal sealer as described in step 7.)

Step 5. DiaoSeal product Preparation

Our technician will prepare all wall tile and bath junctions along with any wall and wall internal junction using specially engineered diamond burs. This process ensures a clean product bond to the tile, instead of the product adhering to the glaze of the tile (as our competitors’ does).

Step 6. DiaoSeal Application

DiaoSeal will be applied to the prepared main movement areas. The application is in form of a 5mm coving. The product will be colour- matched to the shower to give a neat appearance. DiaoSeal has been specifically designed for wet area sealing and has the strength to withstand normal building movement. It will not crack, deteriorate or let water penetrate through the junctions. It does not dissolve and is not weakened by strong chemical cleaning agents.
If excessive movement or deflection greater than 3mm within the bath is evident we may substitute our DiaoSeal for DiaoFlex

Step 7. DiaoSeal Sealer

A clear sealer applied to the entire tiled surface area of the shower. This sealer deeply penetrates the grout, narrowing the pores, to help strengthen and seal it. Any micro fractures in the glazing of the tile will be sealed. This prevents any unnecessary tile removal.

Last But Not Least - Peace of Mind

Your shower is now professionally sealed and guaranteed against leakage for a full twelve years.

Your shower will be useable the next day.

The above is subject to our Terms and Conditions of Trade. | t. 1300 366 569

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