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Leaking Basement Repair & Sub-Floor Waterproofing
Basement Filling with Water?
Licensed remedial waterproofers seal basements from the inside or outside, average metro arrival 60 minutes* and 10-year warranty.
Live technician
hotline 24 / 7
Negative-side injection & sump-pump installs, no excavation required
10-year workmanship warranty on repairs
*Response time recorded during the last major storm
Let’s Connect
Why You Need Action Today
- Hydrostatic pressure climbs with every millimetre of rainfall, forcing water through walls & slabs.
- Mould and structural rot start within 24 hours in dark basement conditions.
- Electrical boards & stored valuables are at risk the moment water reaches floor level.
Our Three-Step Balcony Rescue
Pump & Contain
High-capacity pumps remove standing water; temporary barriers stop further flow
Pinpoint Water Paths
Moisture probes & FLIR cameras trace seepage through cold joints, cracks & floor-wall
Seal & Guarantee
Negative-side epoxy injection, crystalline slurry or PVC cavity-drain membrane installed. Sump pump & back-up alarm fitted where needed. Photo report + 10-year warranty supplied
Specialist Sub-Floor Services
- Emergency pumping & dehumidification
- Crack injection & cold-joint sealing (epoxy / polyurethane)
- Negative-side cementitious & crystalline systems
- Cavity-drain membranes with feed channels to sump pump
- External curtain injection (where access permits)
- Insurance & strata reports within 24 hours
Why Choose WS Remedial
24/7 Availability
Live technicians answer your call, not an answering service
Licensed & Insured
QBCC & NSW Fair Trading licensed remedial waterproofers
Fixed Pricing
Scope & price approved before work starts – no surprises
10-Year Warranty
Written warranty accepted by insurers & strata bodies
Success Stories
“After multiple failed fixes, Waterstop identified hydrostatic pressure as the true cause. Thanks to him and Thomas the technician, we finally have a dry downstairs area.”
– Warwick Absolon – Strata Manager
“A great solution to a wet problem, Waterstop delivered great resolutions each time we called.”
– Isaac Espuis – Facilities Supervisor, RBWH
FAQ
Can you repair from the inside?
Yes. Negative-side systems stop water without costly excavation, perfect for zero-lot-line properties.
How soon can you get here?
Sydney metro averages 60 minutes; Northern Beaches, Western Sydney & Central Coast within two hours.
Will the repair last?
All basement waterproofing solutions are warranted in writing for 10 years and designed to meet AS 3740 & AS 4654 standards.
What does the inspection cost?
A flat emergency call-out covers pumping, containment & diagnosis. Permanent repairs are fixed-price once you approve.
Every litre of water weakens your foundations.
Secure your basement repair now.
or call 1800 005 000 | 02 9346 8308