Re-roofing in Hornsby: when a roof is past repairing

Some roofs cannot be saved by another repair. Battens have gone soft, half the tiles are delaminating, the sarking was never there, and every heavy rain finds a new way in. At that point replacing the covering is the cheaper decision, not the extravagant one.

We quote full re-roofing across Hornsby and the Upper North Shore in both tile and Colorbond. The inspection and the written quote are free. Call (02) 9000 1127.

How to tell repair has run out of road

Replacement starts to make sense when several of these are true at once:

• Tiles are cracking in multiple places rather than where something hit them.
• Concrete tiles have lost their surface and are soaking up water and shedding grit into the gutters.
• Ridge pointing has failed across the whole roof, not just one line.
• Battens or sarking are rotted, missing or were installed before modern practice.
• You have paid for the same leak more than twice.
• The roof is being reframed anyway for an extension or a second storey.

If only one or two apply, say so and we will quote a roof restoration instead. That is a genuinely cheaper path and on a sound 1970s concrete tile roof it is usually the right one.

Choosing the covering

Staying with tile

Tile suits the streetscape through Beecroft, Cheltenham, Normanhurst and Wahroonga, where the housing stock runs from Federation and Arts and Crafts through inter-war and post-war, and where the roofline is part of what the street looks like. Modern concrete tiles lay fast and come with long product warranties. Terracotta costs more and lasts a very long time.

Changing to Colorbond

On a block with gums directly over the house, metal has a practical advantage: litter slides off a smooth profile instead of lodging in tile laps, and valleys stay clear longer. It is lighter, it suits low pitches, and it works well with the mid-century rooflines through Hornsby Heights and Berowra Heights. We cover this in detail on the metal and Colorbond roofing page.

Changing material is a structural decision as well as an aesthetic one. Framing built for tile can take metal easily; the reverse needs checking.

Heritage and conservation areas

The Beecroft and Cheltenham Heritage Conservation Area is listed in the Hornsby Local Environmental Plan, with its character statement set out in Council's Development Control Plan. Houses inside it, and individually listed heritage items anywhere in the Shire, sit outside the usual exempt-development pathway when you change a roof's material, profile or colour.

That does not mean you cannot re-roof. It means the job starts with a conversation about what is appropriate and, where required, an application. We will tell you up front if your address is likely to be affected rather than discovering it halfway through.

What actually happens on site

1. Inspection and measure. Pitch, area, access, framing condition, existing sarking, and the state of gutters and flashings.
2. Written quote. Material, removal and disposal, sarking, battens, ridge and valley detailing, gutters if they are included, and the expected duration.
3. Strip in sections. Only as much comes off as can be dried in and closed the same day.
4. Repair what is underneath. Rotten battens, split rafters and damaged timber get dealt with while the roof is open. If we find something that was not visible at quoting, you hear about it before we proceed, with a price.
5. Sarking and new covering. Including the roof-to-wall junctions and valley detailing, which is where most roofs leak.
6. Clean-up and handover. Gutters cleared, site cleaned, written workmanship warranty issued.

Bushfire-prone land changes the specification

A large share of the Shire's residential land is mapped as bushfire prone on maps certified by the NSW Rural Fire Service, particularly around Berowra, Mount Kuring-gai, Cowan, Brooklyn, Westleigh, Hornsby Heights and the acreage country at Arcadia and Fiddletown.

Where that applies, new roof work is assessed against AS 3959 and the detailing changes: the roof is fully sarked, roof-to-wall junctions are sealed, any gutter or valley guard must be non-combustible rather than plastic, and openings get fine-aperture ember mesh. It is not a large part of the overall cost, but it has to be in the quote from the start.

Talk it through on (02) 9000 1127.

What drives the price

Roof size and pitch do most of the work in the number, then material, then access. A long steep run with a two-storey drop into a gully, a driveway too tight for a truck, or a canopy that has to be worked around all add time. Structural repairs found under the old covering are the usual variable, which is why we quote them as they arise rather than padding the original figure.

We will not give a dollar range over the phone for a roof we have not seen. We will give you an itemised written quote after the inspection, free, with no obligation to go ahead.

Re-roofing across the Shire

We quote replacements through Hornsby, Waitara, Normanhurst, Pennant Hills, Thornleigh, Mount Colah and Berowra, and out to the larger blocks at Arcadia. The full list is on the service areas page.

Call (02) 9000 1127 or request a free quote and we will come and measure it.