Remediation for leaky buildings, leaky homes, and balconies.
A leaky building is a property where water has penetrated the cladding, roof, balconies or joinery, causing hidden decay, mould and structural damage. Aamsko fixes it end to end — a weathertightness investigation confirms the cause, then we design and manage the remediation, whether that’s recladding, reroofing, leaky balcony waterproofing, or all three, as one accountable project instead of separate, disconnected trades.
Aamsko diagnoses leaky buildings, then designs and delivers the fix — recladding, reroofing, leaky balcony waterproofing or a combination — as one integrated advisory. Weathertightness investigation, legal risk, cost and construction stay aligned from day one, so the failure is resolved once, not repeatedly.
ONE INTEGRATED TEAM
Weathertightness investigation · Recladding & reroofing · Leaky balcony waterproofing · Construction law & quantity surveying . LTMP
REAL PICTURE ON LEAKY HOMES & BUILDINGS
Why do leaky buildings become so difficult to fix?
Because a leaky home is rarely one problem. Moisture ingress from a cladding, roofing or balcony failure sets off a chain reaction — structural deterioration, mould and health issues, falling property value, and eventually liability disputes and escalating remediation costs. Fragmented advice makes it worse: lawyers focus on liability, engineers on defects, contractors on repair work, and quantity surveyors on cost — with no one owning the whole outcome. That’s exactly where most leaky home remediation projects stall.
A CRITICAL RISK POINT
Too often, leaky building problems are made worse by one issue: fragmented advice. For example:
— Lawyers focus on liability
— Engineers focus on defects
— Contractors focus on repair work
— Quantity surveyors focus on cost
OUTCOME OF FRAGMENTED ADVICE
Ultimately, when no one is responsible for bringing it all together, this is where most leaky home remediation projects fail.
× Delays in decision-making
× Rework and duplicated effort
× Disputes between parties
× No clear accountability
RECLADDING . REROOFING . BALCONY WATERPROOFING
What’s the actual fix for a leaky building?
It depends where the water is getting in. Most leaky buildings need one, or a combination, of three remediation types — and Aamsko manages all three under one project so entry points aren’t fixed one at a time while others keep leaking.
Cladding failure
Recladding
Recladding replaces a failed exterior cladding system — typically monolithic cladding without a drainage cavity — with a compliant, cavity-based system. We manage design, consent and construction so the new cladding resolves the root cause, not just the symptom.
Roof failure
Reroofing
Reroofing replaces a failing roof structure or membrane where penetrations, flashings or aging materials are letting water in. On leaky buildings, we frequently scope reroofing alongside recladding so the whole envelope is addressed in one build.
Balcony failure
Leaky balcony waterproofing
Balconies are one of the most common sources of moisture ingress in NZ apartments and townhouses. Repair involves stripping the failed membrane and finish, correcting falls and drainage, and installing a new compliant waterproofing system — designed and managed end to end.
STEP ONE
How do you find out where a building is leaking?
A weathertightness investigation. We pinpoint the root causes of moisture ingress — cladding, roofing, balconies or joinery — then evaluate overall building condition and determine the true scope of damage, so remediation is designed on clear, reliable evidence rather than guesswork.
The benefit: recladding, reroofing or balcony waterproofing scope is set correctly the first time, instead of expanding mid-project as hidden defects are uncovered.
WEATHERTIGHTNESS INVESTIGATION METHODS
01 Weathertightness investigation (ASTM E2128)
02 Targeted moisture & façade testing (AAMA 511)
03 Condition surveys & invasive inspections
04 Legal compliance / cost estimation
HOW WE DELIVER RESULTS
How does Aamsko’s leaky building remediation process work?
A structured six-step process runs investigation, recladding or reroofing design, balcony waterproofing, cost and legal risk together — reducing uncertainty, minimising unexpected costs, and improving legal and insurance outcomes through coordinated planning.
Step 01
Initial Assessment
Moisture testing, invasive inspections and structural evaluation identify the extent of the leaky building issue and any immediate risks.
Step 02
Integrated Strategy
We align legal, technical and cost considerations, coordinating consultants, engineers and legal advisors around one remediation strategy.
Step 03
Scope Definition
We prepare detailed remediation design — recladding, reroofing, balcony waterproofing — and documentation for council approvals and compliance.
Step 04
Cost Planning
We build realistic budgets with contingencies for hidden damage, plus funding strategies including insurance or legal recovery.
Step 05
Project Execution
Experienced contractors, ongoing site inspections and quality assurance manage the recladding, reroofing or waterproofing works through to delivery.
Step 06
Completion & Assurance
Final inspections, a Code Compliance Certificate where required, and long-term maintenance recommendations protect your investment.
What’s the outcome?
A weathertight, Building Code-compliant building — reclad, reroofed or waterproofed as needed — with consented remediation works, a documented methodology and quality-controlled sign-off, protecting the building against future weathertightness claims.
LEAKY BUILDING & HOME SERVICES
Integrated remediation advisory.
End-to-end leaky building and leaky home remediation support — from initial weathertightness investigation through to construction completion.
01
Investigation & diagnosis
First, weathertightness investigation, building condition assessment and root-cause diagnosis take place before any design decision is made.
02
Strategic remediation design
In turn, the remediation strategy meets current NZ Building Code requirements and stages works to minimise disruption and risk.
03
Cost planning & budget control
Meanwhile, realistic budgets, contingencies for hidden damage, and funding strategies — including insurance or legal recovery — keep the project financially sound.
04
Legal & risk management
Liability and insurance claims identified early, so legal recovery options support your leaky building remediation, not delay it.
05
Project management & delivery
We appoint contractors and throughout construction, perform ongoing site inspections, quality assurance and management of timelines, safety and disruption keep occupants protected.
06
Completion & protection
Ultimately, final inspections, a Code Compliance Certificate where required, and long-term maintenance recommendations protect the outcome.
WHY AAMSKO
What you gain from an integrated leaky building advisory.
Clear accountability
Ultimately, one advisory is responsible for the full remediation outcome.
Reduced risk
Instead, legal, technical and cost risks are managed together, not separately.
Better cost control
As a result, budgets stay aligned with the real scope and risk of your leaky home.
Long-term asset protection
Ultimately, remediation solutions are designed for durability and value.
Take control of your leaky building.
Get a leaky building and leaky home remediation advisory that aligns weathertightness investigation, legal risk, cost and delivery from day one.
LEAKY BUILDING & LEAKY HOME FAQ
Leaky homes, recladding, reroofing & balcony waterproofing — answered
Direct answers to what Auckland owners and body corporates ask us most about leaky buildings, weathertightness, recladding, reroofing and balcony repairs.
What is a leaky building?
A leaky building, or leaky home, is a property where water has penetrated the building envelope — often through cladding, flashing, decks or joinery — causing hidden decay, mould and structural damage.
How do I know if I have a leaky building?
Signs include staining, soft walls, musty odours and mould. However, many leaky buildings show no exterior signs at all — a formal weathertightness investigation with invasive testing is the only reliable way to confirm the condition.
What is recladding, and when is it needed?
Recladding replaces a building’s exterior cladding, usually because the original monolithic cladding lacks a drainage cavity. It’s needed when investigation confirms the cladding itself, not just isolated details, is causing ongoing leaks.
What is reroofing, and how does it relate to leaky buildings?
Reroofing replaces a failing roof structure or membrane, often required where penetrations, flashings or aging materials let water in. It’s frequently scoped alongside recladding and balcony waterproofing in one coordinated project.
How do you know if you have a leaky balcony, and what should you do about it?
Watch for ponding water, cracked or lifting tiles, staining or bubbling paint on the ceiling below, a spongy deck, and musty smells in the room underneath. Arrange a weathertightness investigation of the membrane and drainage as soon as you notice these signs — catching it early keeps the repair contained instead of spreading into a larger remediation project.
How much does recladding, reroofing or balcony waterproofing cost?
It depends on the extent of water damage, structural impact, building size, access challenges and materials required — and whether recladding, reroofing or balcony waterproofing (or all three) is needed. Without integrated cost planning, budgets can double mid-project as hidden defects emerge; with it, contingency for hidden damage is built in from the start.
Can leaky building issues lead to legal claims?
Yes. Leaky building defects frequently trigger claims against builders, designers, councils or previous owners. Our construction law team assesses liability alongside the technical diagnosis, so recovery options are identified early.
Why is project management important for leaky building and leaky home remediation?
Because legal, technical and financial decisions all affect each other on a leaky building. Our integrated project management approach combines construction law, weathertightness investigation, design, quantity surveying and site delivery into one accountable advisory — coordinating decisions instead of leaving them to separate consultants, which is what reduces delays, rework, disputes and cost blowouts.
Not sure if your property is a leaky building?
Tell us what you’re seeing — we’ll recommend the right first step.