Deteriorated grout
Deteriorated grout can allow repeated moisture entry through an existing tiled surface.
CARESEAL · WATERPROOFING SYDNEY
Waterproofing Sydney
CareSeal provides surface-applied waterproofing, sealing and joint-restoration solutions for suitable existing tiled wet areas across Sydney. Our approach is designed to keep sound tiles in place where the visible surface condition is appropriate; we do not remove tiles to replace underlying waterproofing membranes.
✓ Fully insured✓ Clear quote first✓ Up to 7-year written guarantee*✓ Service information reviewed by CareSeal
CARESEAL APPROACHAssess before recommending.Keep sound finishes where an appropriate repair allows it.
2026 QUALITY BUSINESS AWARDS
Recognised for waterproofing in Ku-ring-gai.
CareSeal has been recognised in the 2026 Quality Business Awards as The Best Waterproofing business for Ku-ring-gai Council, NSW.
View CareSeal’s 2026 Award →WHY CARESEAL
A repair approach built around the actual problem.
CareSeal assesses the condition before recommending work. The goal is to solve the identified wet-area problem with an appropriate scope while keeping sound finishes in place where a suitable surface-first repair allows it.
Keep sound tiles where appropriateUp to 7-year written guarantee*2026 award-recognised waterproofingRepair matched to the condition
SURFACE WATERPROOFING SYDNEY
Waterproofing solutions that work with suitable existing tiles.
CareSeal focuses on surface-applied waterproofing, sealing, grout restoration and flexible-joint repair for suitable existing tiled wet areas.
We assess the visible condition first. Where sound tiles and accessible surface details make this approach suitable, the goal is to improve water resistance and address identified entry points without unnecessary tile removal.
Signs a surface assessment may help
✓Recurring moisture around existing tiled wet areas
✓Cracked or deteriorated grout joints
✓Failed silicone or flexible junctions
✓Water entry through suitable exposed surface details
✓Weathered tiled balcony joints and seals
✓Existing sound tiles where a surface-applied repair may be suitable
WHERE WATER CAN ENTER
Why existing tiled wet areas can develop water-entry problems.
Tiles are only one part of the visible surface. Grout, flexible joints and exposed junctions can deteriorate with moisture, movement, cleaning and weather exposure.
Failed flexible joints
Flexible silicone and movement joints can split, shrink or lose adhesion over time.
Exposed junctions
Corners, thresholds, edges, penetrations and other exposed junctions can become water-entry points.
Issues outside our scope
Some leaks originate from plumbing, substrate or an underlying membrane failure and are outside CareSeal’s surface-applied waterproofing scope.
CARESEAL WATERPROOFING OPTIONS
What can a surface-applied waterproofing scope include?
The treatment is matched to the existing tiled area and the defects that can be addressed from the accessible surface.
✓
Surface-applied waterproofing
A suitable surface-applied system may be used where the existing tiled area and identified problem make that approach appropriate.
✓
Regrouting & grout restoration
Deteriorated grout can be removed and renewed where it forms part of the agreed surface-restoration scope. Explore tile regrouting →
✓
Flexible-joint renewal
Suitable failed silicone and movement joints can be renewed at accessible corners, perimeters and junctions where required.
✓
Surface sealing
Suitable tiled surfaces and exposed details can be sealed as part of a condition-based repair scope.
IMPORTANT SERVICE BOUNDARY
Does CareSeal replace waterproofing membranes under tiles?
No. CareSeal specialises in suitable surface-applied solutions around existing tiled areas.
We do not remove tiles to expose, install or replace an underlying waterproofing membrane, and we do not represent surface sealing or regrouting as a substitute for membrane reconstruction when an underlying system has failed.
If the visible evidence suggests the problem is outside the surface-repair scope, we explain that rather than recommending a treatment that does not match the condition.
CareSeal's scope
✓Keep suitable sound tiles in place
✓Work from accessible tiled surfaces and joints
✓Regrout, reseal and surface-waterproof where suitable
✓Be clear when evidence points outside that scope
WATERPROOFING BY AREA
Bathrooms, balconies and kitchen wet areas need different surface details.
The right repair depends on where the water is appearing and which accessible joints or surfaces have deteriorated.
For area-specific information, see Bathroom Waterproofing →, Balcony Waterproofing → or Kitchen Waterproofing →. The Sydney page remains the overview of CareSeal's surface-applied waterproofing service.
Choose the page by area
✓Bathrooms & showers → Bathroom Waterproofing
✓Tiled balconies → Balcony Waterproofing
✓Kitchen wet areas → Kitchen Waterproofing
✓Unclear water source → Leak Detection
PRICING GUIDANCE
Quote after inspection
CareSeal provides a clear quote after reviewing the existing tiled area and the surface-applied waterproofing, sealing or restoration scope suitable for the condition.
Waterproofing is quoted after reviewing the existing tiled area, visible joints and surfaces, access, preparation and the surface-applied system suitable for the agreed scope.
Clear scopeKnow what is proposed before work beginsTypical timingMany wet-area repairs are completed in 1–2 daysUp to 7 yearsWritten guarantee on qualifying work
REAL CARESEAL WORK
See the standard of our wet-area restoration work.
Explore CareSeal project photography showing wet-area restoration, grout renewal, sealing and waterproofing work.
Explore the project gallery →
THE CARESEAL PROCESS
Four clear steps from your first enquiry to finished work.
Assess & Recommend
Send photos and describe the problem. We review the condition and recommend the appropriate next step.
Quote
You receive a clear scope and quote before approved work starts.
Complete the Work
CareSeal completes the agreed repair, regrouting, sealing or waterproofing scope.
Finished Space
We review the completed work and provide relevant care and return-to-use guidance.
QUESTIONS BEFORE YOU BOOK
Waterproofing FAQs.
What type of waterproofing does CareSeal provide?+
CareSeal focuses on suitable surface-applied waterproofing, sealing, regrouting and flexible-joint restoration around existing tiled wet areas. The exact scope depends on the visible condition and accessible surface details.
Can CareSeal waterproof over existing tiles?+
In suitable cases, CareSeal can apply a surface-based waterproofing or sealing solution while keeping sound existing tiles in place. The tiled surface, grout, joints and visible condition need to be assessed first.
Does CareSeal replace waterproofing membranes under tiles?+
No. CareSeal does not remove tiles to expose, install or replace an underlying waterproofing membrane. If evidence suggests an underlying membrane or substrate problem, that work is outside CareSeal’s surface-applied waterproofing scope.
Is surface waterproofing suitable for every leak?+
No. Surface-applied work is suitable only where the condition and likely water-entry path can appropriately be addressed from the accessible tiled surface, grout, seals or junctions.
What is the difference between waterproofing and regrouting?+
Regrouting renews suitable deteriorated grout joints. CareSeal’s waterproofing scope can be broader at the accessible surface and may combine suitable surface-applied waterproofing, sealing, flexible-joint renewal and grout restoration according to the condition.
Can CareSeal waterproof showers and bathrooms without removing tiles?+
Where the existing tiled wet area is sound and suitable for a surface-applied repair, CareSeal can assess waterproofing and sealing options that keep sound tiles in place. Under-tile membrane replacement is not part of this service.
Do you provide balcony waterproofing?+
Yes. CareSeal provides surface-applied balcony waterproofing and sealing for suitable existing tiled balconies. Balcony waterproofing and sealing is advertised from $125/m², with final pricing depending on area, access, condition and agreed scope.
How much does waterproofing cost in Sydney?+
The main Waterproofing Sydney service is quoted after assessment because area, access, surface condition, preparation and the suitable system vary. CareSeal separately advertises balcony waterproofing and sealing from $125/m².
How long does surface waterproofing take?+
Many CareSeal wet-area repairs are completed within 1–2 days, depending on area, access, preparation, weather where relevant, product requirements and the agreed scope.
How soon can I use the repaired area?+
CareSeal generally advises allowing around 24 hours after completion before using many repaired wet areas, but product-specific and job-specific curing or return-to-use guidance always takes priority.
What photos should I send for a waterproofing quote?+
Send an overall view of the tiled area plus close-ups of deteriorated grout, silicone or flexible joints, corners, thresholds, edges and any visible dampness or staining. Tell us when the moisture appears and whether previous repairs have been attempted.
Is CareSeal waterproofing guaranteed?+
Qualifying CareSeal work can include a written guarantee of up to 7 years. The applicable guarantee depends on the service, product and agreed scope.
SYDNEY SERVICE AREAS
Waterproofing across our Sydney service area.
Explore CareSeal service information for selected Sydney suburbs and regions.
READY TO SHOW US THE JOB?
Send photos of your tiled waterproofing problem.
Include an overall view plus close-ups of grout, silicone or flexible joints, corners, thresholds, edges and visible dampness or staining. Tell us when the moisture appears and whether previous surface repairs have been attempted.