FAQ

There is no single rate that applies to every roof. Cost depends on the roof area, pitch, height, access, material or membrane system, existing condition, removal work, flashings, drainage and project location.

Our Roofing Cost Guide NZ explains the main pricing factors and broad planning ranges. A site-specific quote is still needed.

Square-metre rates are useful for early budgeting, but they do not tell the whole story. A straightforward single-storey roof and a steep roof with valleys, penetrations or difficult scaffolding can have the same area and very different costs.

Check exactly what a rate includes before comparing it.

Possible additions include scaffolding or edge protection, removing and disposing of old roofing, replacing damaged substrate or framing, new underlay, flashings, gutters, insulation work and making good around penetrations.

Ask how unforeseen work discovered after removal will be priced.

The quotes may cover different materials, preparation, access equipment or finishing details. One may include removal, disposal, flashings and repairs while another treats them as extras.

Compare the complete scope, product specification, exclusions and treatment of variations, not only the total.

A new roof is installed as part of a new building, extension or major alteration. Re-roofing replaces the roof covering on an existing building.

A replacement project may also involve removing old materials and updating underlay, flashings or drainage details.

Replacement may be worth discussing when leaks keep returning, deterioration is widespread, materials have reached the end of their useful life, or repeated repairs no longer provide a practical result.

An inspection is needed because age alone does not determine whether a roof should be repaired or replaced.

Sometimes, but the building structure, roof pitch, weight, drainage and detailing all need to suit the proposed system. Changing from tiles to metal, for example, involves more than selecting a new appearance.

A contractor can assess whether further design or building work is required.

Not in every situation. The right approach depends on the existing material, its condition, the proposed system and installation requirements.

An overlay should not be assumed suitable simply because it appears cheaper. Moisture, damaged substrate or incompatible materials may need attention first.

Move belongings away from the water where it is safe to do so and contain drips inside the building. Avoid climbing onto a wet or damaged roof.

Record when the leak appears and where water is visible, then request a roof repair assessment.

Many leaks can be repaired when the fault is localised and the surrounding roof remains serviceable. If deterioration is widespread or previous repairs keep failing, partial or full replacement may be discussed.

The roof needs to be inspected before the likely scope can be confirmed.

Possible causes include damaged roofing, loose or deteriorated fixings, failed sealants, cracked or poorly detailed flashings, blocked drainage, punctured membranes and problems around chimneys, skylights or other penetrations.

Water can travel before appearing inside, making diagnosis from ground level difficult.

Yes. Describe the damage, when it happened and whether water is entering the building. Photos taken safely from the ground can help with the first conversation.

Do not climb onto loose, wet or unstable roofing. Clearly explain any immediate risk when submitting the enquiry.

Long-run metal roofing uses profiled sheets manufactured in long lengths to suit the roof. It is widely used on New Zealand houses, sheds, rural buildings and commercial properties.

The profile, coating, gauge, fixings and flashing details should suit the design and exposure conditions.

Often, yes. The existing roof, underlay, purlins or substrate, flashings and drainage should be checked as part of planning the replacement.

The quote should state whether old roofing removal, disposal and related repairs are included.

It can. Salt, prevailing wind and local exposure may influence the coating, fixings, maintenance and detailing. A product suited to an inland property may not automatically be the best choice near the coast.

Tell the contractor about the property’s location.

Localised damage, loose fixings or isolated flashing problems may sometimes be repairable. Extensive corrosion, repeated leaks or widespread coating failure may make replacement more practical.

A contractor can explain the likely limits of repair after inspecting the roof.

Membrane systems are commonly used on flat and low-slope roofs, decks over occupied spaces, extensions and many commercial buildings. They create a continuous waterproof layer where water is directed to outlets or gutters.

Preparation, falls, penetrations and edge details are important parts of the system.

Small punctures or localised detail failures may sometimes be repairable. The contractor also needs to consider the age and condition of the membrane, the substrate and whether water has travelled beyond the visible area.

Widespread failure or trapped moisture can require a broader solution.

Ponding can result from inadequate falls, blocked outlets, substrate movement or drainage details that are not working as intended.

Persistent ponding should be assessed because the solution may involve drainage or substrate work as well as the membrane itself.

Sometimes an overlay may be possible, but only after the existing system and substrate have been assessed. Moisture, adhesion, compatibility, drainage and the condition of details all matter.

The contractor should explain whether an overlay or full removal is proposed.

Roof maintenance may include checking roofing materials, fixings, flashings, sealants, penetrations, gutters, outlets and areas where debris collects.

Cleaning or coating should only use methods suitable for the roofing system.

There is no schedule that suits every property. Roof age, material, surrounding trees, coastal exposure, previous leaks and manufacturer guidance can all influence timing.

Arrange an assessment after significant weather or when you notice damage, staining, blocked drainage or a change in condition.

No. Maintenance can identify developing faults and reduce avoidable problems, but it cannot prevent every form of damage or material failure.

Its value is in finding issues such as blocked outlets, loose fixings or deteriorating details before they become more disruptive.

Often, yes. Gutters, valleys, sumps and outlets form part of the way water leaves the roof. Blockages, poor falls or damaged components can contribute to overflow and moisture problems.

Confirm whether drainage inspection and cleaning are included in the proposed maintenance.

Yes. Enquiries may come from homeowners, landlords, property managers and body corporate representatives. Explain who manages access and who is authorised to discuss the work.

For multi-unit properties, shared roofing areas and approval requirements may need consideration.

Commercial roofing enquiries may involve offices, shops, warehouses, workshops, schools, accommodation buildings and other business premises.

Building use, operating hours, tenants, rooftop plant and safety requirements can affect planning.

The same weatherproofing principles apply, but roof size, materials, access, drainage and building use can differ. Commercial roofs may include large low-slope areas, internal gutters or rooftop equipment.

Residential work often needs to account for occupied homes, landscaping and household access.

Yes. Enquiries can include detached garages, farm or storage sheds, workshops, sleepouts and home extensions.

For new structures, plans and specifications help define the roof design, material, drainage, insulation and connection with the rest of the building.

There is no single best material for every roof. Pitch, structure, coastal or wind exposure, drainage, appearance, maintenance and budget all play a part.

A contractor can discuss suitable options after reviewing the building and the work needed.

Roofing schedules are weather-dependent because the building must remain protected while sections are open. Rain, strong wind and unsafe surface conditions can cause delays.

The contractor should explain how weather delays or temporary protection will be managed.

Roof access can involve serious fall and surface risks, particularly when roofing is wet, steep, brittle or damaged. Use ground-level observations and safely taken photos where possible.

Leave close inspection to someone with suitable access equipment and a safe working method.

Some work may be exempt while other projects can require building consent, design input or compliance with specific installation requirements. The answer depends on the building and scope.

Confirm responsibility for plans, approvals or inspections before proceeding.

The independent roofing contractor provides their own quote after discussing or assessing the project. Roofers Direct NZ does not set the price or prepare the scope for them.

Questions about materials, timing, payment or conditions should be discussed directly with the contractor.

A useful quote should describe the work, materials or system, preparation, access, removal and disposal, related components, price, GST treatment, payment terms and important exclusions.

For replacement work, ask how hidden damage or variations discovered after removal will be handled.

Yes. Before accepting work, make whatever checks are appropriate. These may include relevant experience, insurance, references, examples of similar work, written terms and any licences or qualifications required for the scope.

The checks needed vary with the value and complexity of the job.

Your agreement for the roofing work is directly with the independent contractor. Questions about workmanship, payment, delays, variations or warranties should normally be raised with that business first.

Keep the written quote, agreed changes, invoices and relevant correspondence.