Waterproofing Repairs South Island
TekSeal provides waterproofing repairs and refurbishment for residential and commercial buildings across the South Island. We work on existing structures of every size and complexity, diagnosing the cause of a leak or failure and carrying out a repair that actually lasts. Whether it’s a leaking roof, a failing basement, or a building showing the early signs of water ingress, we bring the same careful, methodical approach to every job.
Range of Services Offered
Our repair and fabrication work covers three main areas:
- Roofing repairs, covering all common roof types and keeping your building’s first line of defence against the weather intact.
- External and internal fabrication repairs, addressing both the outside of a structure and the areas inside it that are prone to leaks.
- Ground floor and basement waterproofing, tackling the specific challenges of below-ground and ground-contact areas so they stay free of moisture and long-term damage.
Every repair gets the same attention to detail, whatever the size of the building or the scope of the job.
Why Choose TekSeal
Our background in renovation and refurbishment means we’re used to working on existing buildings rather than new builds, and that brings its own set of challenges. We understand how older construction methods and materials behave over time, and we tailor our repair methods to suit rather than applying a one-size-fits-all approach. That experience shapes everything from how we assess a job to the products we choose for the repair.
Addressing Leaky Building Issues
Leaky building syndrome remains a common issue in New Zealand homes and commercial buildings, usually stemming from design or construction shortcuts made years ago. Before recommending a repair, we carry out a thorough assessment to identify exactly where water is getting in and why, rather than treating the visible symptoms alone. Whether the problem is coming from the roof, a wall junction, or a below-ground area, we address the root cause so the repair holds up long-term.
Built for South Island Conditions
The South Island’s weather swings quickly between hot, dry spells and heavy rain, and building movement from wind or minor seismic activity adds another layer of stress on ageing waterproofing systems. Our repair methods are chosen to handle these conditions, not just to patch a leak but to hold up over the years that follow. We choose products and installation methods with this variability in mind, so a repair carried out in summer performs just as well through a wet winter.
Our Process
- Site survey and assessment, every job starts with a full survey so we understand the scope of the problem before recommending a fix.
- Clear, itemised quotes, you’ll receive a detailed breakdown of the repair work involved, so there are no surprises once the job starts.
- Transparent communication, we keep you informed at each stage of the repair, from the initial survey through to completion.
- Reliable workmanship, we use trusted products and methods, backed by guarantees on the finished work.
We’re committed to delivering reliable solutions and clear communication at every stage of the process.
Completed Projects
Residential Foundation Waterproofing
Rebuild and seal existing basement foundations.
Port Hills Residential Home foundation was scoured out by underground water tracking into different areas after the result of the 2011 earthquakes.
Below floor void was pump re-filled with foundation grade concrete, existing below ground walls and foundation edges waterproofed with a liquid membrane, new insulation and cover sheet installed and applied, then soil refilled to complete.
Tiled Balcony Waterproofing
Balcony floor earthquake damaged and drainage levels required to be reset.
Existing floor water-blasted, cracks repaired, floor surface relevelled, complete waterproofing membrane applied then floor retiled to complete.
Slate tile roof with internal guttering waterproofing
From when this substantial home was built, the internal guttering levels were set incorrectly of which caused not enough fall for rainwater to flow away in a heavy rain storm situation.
This in effect caused the rainwater to dissipate back under slate tiles into the internal roof cavity.
For the first 3 years after the house construction had been completed, the very durable roof lining paper that was installed, managed to hold the rainwater out, however, as photo(s) shows the deteriorated roof lining paper finally perished. Rainwater then entered into the internal roof cavity and onto internal ceiling Gib liner, then penetrating through into the below bedroom. After initial investigations, we found the source of the problem, removing slate tiles, installing galvanised sheeting to roof joist, laid existing butynol liner over top, sealed, re-installed slate roof tiling.
Ready to Protect Your Property?
Don’t let water damage compromise your building. Contact TekSeal for expert waterproofing repairs and refurbishment across the South Island. Whether it’s a leaking roof, a damp basement, or a full assessment of your building’s water tightness, we can help.
Get in touch to arrange an assessment or request a quote.
