Rot. Leaks. Hidden damage. They’re three words no homeowner wants to hear — but when they do show up, you want an expert on your side who’s been there, done that, and fixed it right the first time.
At RB Thomas Ltd, we’ve been tackling New Zealand’s leaky building crisis for over 10 years. Our lead builder cut his teeth in the thick of it, repairing complex rot damage in residential homes and multi-storey developments across the country.
What Causes Leaky Building Damage?
Many New Zealand homes built in the 1990s and early 2000s used monolithic cladding systems, untreated timber framing, and poor detailing — often without adequate cavities, flashings or weatherproofing. Over time, this allows moisture to creep in behind walls, causing:
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Framing rot
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Swollen or crumbling cladding
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Mould and mildew
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Soft spots around windows and doors
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Sagging ceilings or warped floors
The worst part? Much of the damage is hidden, and it spreads fast.
How We Fix It — Properly
Rot and moisture issues are not something to cut corners on. We offer full-scope, compliant remediation services that address the cause — not just the symptoms:
-Full leak and rot assessment
– Targeted or full reclads
– Framing replacement (treated timber only)
– Weathertightness detailing: flashings, cavities, seals
– Interior repairs: insulation, linings, joinery
– Work guaranteed and fully consented where required
We also work closely with weathertightness consultants, building inspectors, and local councils to ensure repairs meet or exceed NZ Building Code standards.
Why Choose RB Thomas Ltd?
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10+ years experience in leaky building remediation
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Qualified, licensed building practitioners (LBP)
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Transparent quotes and clear communication
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We treat your home like our own — no mess, no stress
“Rot repair is more than fixing timber — it’s restoring peace of mind.”
— Jake Thomas, Director
Don’t Wait for the Damage to Spread
If your home was built between 1994–2004, or you’ve noticed damp smells, soft cladding, or swelling around windows — get it checked now. Early intervention could save you thousands.
Talk to the Experts
We offer a no-obligation site visit and quote to assess suspected rot or leak damage. Whether it’s a targeted repair or a full reclad, RB Thomas has the tools, experience, and know-how to get it sorted — properly.
rbt.co.nz | contact@rbt.co.nz | 0800 RB 2 RENO
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