Waterproofing that finds the leak first and warrants the fix
Leaking deck, damp basement, failed roof membrane or a joint that lets water into the building: SES diagnoses where the water is getting in, repairs or replaces the waterproofing with warranted systems, and deals with the mould or asbestos the leak has already caused.
- Leak diagnosis before quoting
- Manufacturer-warranted membranes
- Mould and asbestos handled in-house
Two waterproofing services, one accountable contractor
Find the leak, fix the detail or replace the membrane - and deal with the mould or asbestos the leak has already caused.
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SES Waterproofing
Membrane waterproofing
New and replacement membranes for roofs, decks, balconies, basements, podiums, planters and wet areas - liquid, sheet and torch-on systems. Find out more -
SES Waterproofing
Sealing & joint repairs
Leak detection, expansion and control joint resealing, facade and window sealing, and targeted repairs where a membrane is sound but a detail has failed. Find out more
How a waterproofing job runs
- Step 01
Find the water
Inspection, moisture readings and flood or dye testing where the source is not obvious; pre-2000 substrates checked for asbestos.
- Step 02
Fixed quote with the system named
Repair versus replace, the membrane or sealant system, and the warranty you will hold.
- Step 03
Prepare and apply
Substrate repaired and primed, details and upstands done properly, membrane applied to manufacturer spec by trained applicators.
- Step 04
Test and warrant
Flood test or inspection, warranty documentation issued, mould or damage remediation booked if needed.
What waterproofing costs
Membrane work is priced per square metre by system and substrate condition: a residential deck typically NZD [4,000-12,000], commercial roofs and basements quoted per project.
Leak detection and joint resealing are fixed-price after inspection.
Why building owners and body corporates use SES
We find where the water enters before quoting, so you do not pay for a new membrane when a joint is the problem.
- Diagnosis before product - we find where the water enters before quoting, so you do not pay for a new membrane when a joint is the problem.
- Warranted systems, trained applicators - installed to manufacturer specification, warranty paperwork in your hand.
- The damage behind the leak - mould remediation, asbestos in old decks and roofs, and interior repairs, all under one SES contract.
Waterproofing across Auckland and the North Island
Auckland-based crews, with regular work in Hamilton and the Waikato, Whangarei and Northland, Napier-Hastings and Wellington.
Waterproofing FAQs
Straight answers to the questions procurement teams, facilities managers and property owners ask us most. If yours is not here, call the office or send us the scope and a division lead will answer it directly.
How do I know if I need a new membrane or a repair?
Isolated leaks at joints, upstands or penetrations are usually repairable; blistering, cracking or widespread ponding means replacement. Our inspection tells you which before we quote.
Do you provide a warranty?
Yes - manufacturer product warranties plus SES workmanship warranty; terms depend on the system and are stated on the quote.
Can you fix the water damage inside as well?
Yes - mould remediation, linings, paint and repairs through SES Specialist Cleaning and Property Maintenance.
Do you work on body-corporate and commercial buildings?
Yes - podiums, roof decks, basement carparks and facades, with staged programmes and body-corporate reporting.
Which regions do you cover?
Auckland, Waikato, Northland, Hawke’s Bay and Wellington.
Send photos of the leak and the area - we will tell you repair or replace
Photos of where the water shows up and the area above it are enough for the waterproofing lead to advise and book an inspection.
