Gutter repair questions

Most small repair visits are quoted at around $150 – $350 for one or two fixes such as a leaking joint or loose brackets. Replacing a damaged section is typically $350 – $800. Height, access and the condition of the gutter all move the price, which is why every job is quoted individually as a fixed price.

Published NSW guides put Colorbond gutter at about $45 – $70 per metre installed. A full replacement on a single-storey home is commonly $2,000 – $4,000, and $3,500 – $6,500 for a two-storey home. Downpipes, fascia repairs and scaffolding are usually itemised separately.

Metal mesh gutter guard is generally quoted at $25 – $55 per metre installed, depending on roof type, mesh grade and height. Foam and brush inserts are cheaper but trap debris and are not suitable for bushfire-prone areas.

Expect roughly $150 – $350 for a single-storey home and $250 – $550 for two storeys. Heavily blocked gutters, steep roofs and blocked downpipes add to the price.

Repair is cheaper when the problem is isolated: a leaking joint, a few loose brackets or one rusted section. Once rust has spread along most of a run, or the same gutter keeps needing repairs, replacement usually gives better value over a few years.

The most common causes are failed sealant at joints and corners, rust holes, and gutters that have lost their fall so water pools instead of draining. A blocked downpipe also forces water over the back or front of the gutter, which can look like a leak.

Yes, in most cases. A leaking joint or corner can be cleaned, re-riveted and resealed, and a damaged section can be cut out and replaced. Replacement is only needed when corrosion is widespread.

Small rust spots and isolated holes can be treated and patched. If rust runs along the base of the gutter or has perforated it in several places, the gutter is at the end of its life and patching only buys a short time.

A sagging gutter usually needs brackets replaced or added and the run re-aligned so it falls toward the downpipe. If the fascia behind it has rotted, that has to be repaired first or the new brackets will not hold.

A drip in dry weather is not. Water entering the eaves, ceiling or walls during rain is urgent, because overflow into the roof space can damage ceilings, wiring and framing in a single storm.

The gutter may be undersized for the roof area, have too few downpipes, or have lost its fall. Under the National Construction Code housing provisions, eaves gutters need a fall of at least 1:500 and each downpipe may serve no more than 12 metres of gutter.

Sydney storms are intense: the National Construction Code lists a design rainfall of about 200 mm per hour for sizing eaves gutters here. A gutter that copes with ordinary rain can be overwhelmed if it is undersized, partly blocked, or fitted with a guard that sheds water over the front.

Gutters should be installed so overflow spills outward, away from the building, not back into the eaves. The building code requires overflow measures such as a front edge set lower than the fascia, a gap behind the gutter, slotted gutters or overflow weirs.

Water spills at the top of the downpipe, backs along the gutter, and little or nothing comes out at the bottom during rain. If the pipe is clear but water still backs up, the blockage is probably in the underground stormwater line.

Replace them when rust is widespread, when joints keep failing after repair, when long sections have sagged or pulled away, or when the profile is too small for the roof. Doing it at the same time as a re-roof or fascia repair saves on access costs.

Colorbond steel is the most common choice and comes in a wide colour range to match roofing and fascia. Zincalume is the unpainted, lower-cost alternative. Close to the surf a higher grade such as Colorbond Ultra is recommended.

Quad is the most common. Square-fronted profiles suit modern homes, half round is used on architectural and coastal designs, ogee appears on older and heritage homes, and box gutters are found behind parapets and between roof sections.

Like-for-like replacement of gutters and downpipes is generally exempt development in NSW. Heritage items and properties in conservation areas can have extra conditions, so check with your council if that applies.

In NSW the trade is roof plumbing, which covers installing, repairing and maintaining guttering, downpipes, roof flashing and roof coverings. Many plumbers and metal roofers hold the roof plumbing licence class.

Where the work is worth more than $5,000 in labour and materials including GST, the contractor must hold a licence covering roof plumbing, and a written contract is required. You can check any licence free at verify.licence.nsw.gov.au.

Sudden damage from a storm, fallen tree or impact is generally covered. Rust, age, wear and tear, and damage caused by lack of maintenance such as blocked gutters are generally excluded. Check your Product Disclosure Statement and keep cleaning and repair records.

Roofs and gutters are usually common property in NSW, so the owners corporation must repair and maintain them. A downpipe serving only one lot can be that owner’s responsibility, so check the strata plan and by-laws.

Gutter Repair Sydney is a quote service. Your request is passed to a licensed, insured gutter and roof plumbing contractor who services your suburb, and they quote and carry out the work.

It is worth it on homes under or near trees, on two-storey homes where cleaning is costly, and in bushfire-prone areas. It reduces cleaning but does not remove it: fine debris still builds up and needs checking.

NSW Rural Fire Service guidance says that if gutter and valley leaf guards are installed they must be non-combustible. Fine metal mesh is the usual ember-guard product. Plastic, foam and brush inserts are not suitable.

Most homes need cleaning once or twice a year, and homes under heavy tree cover need it more often. Clean before storm season and, in bushfire-prone areas, before summer.