Updated October 2026
Bonnet Bay is a quiet pocket of cul-de-sacs stepping down to the Woronora River, mostly built out in the 1970s and 80s. The setting is the appeal and also the roofing story: mature trees over almost every street, shaded damp roof faces, and blocks that fall away steeply enough that plenty of homes are two storeys at the rear.
We connect you with roof restoration specialists who are comfortable on these sloping riverside blocks and set up access properly before any work starts.
What a restoration involves
- Clear leaf litter from valleys and gutters, then high pressure clean
- Replace cracked and slipped tiles
- Re-bed loose capping and repoint with flexible pointing
- Prime and apply a two-coat membrane
On guide pricing only, a full restoration on a typical Shire home usually lands in the thousands, with steep rear access sometimes adding a little. The cost guide explains the variables.
Shade, trees and forty-year-old mortar
Bonnet Bay roofs rarely fail from one cause. It is the combination: tree shade keeping tiles damp, moss and lichen taking hold, leaf litter damming the valleys, and original 70s mortar reaching the end of its life all at once. The fix is similarly complete. A restoration clears the drainage paths, kills and removes the growth, recements what has moved, repoints the lot and seals the surface so water runs off instead of soaking in.
Because the suburb is small and the streets are quiet, neighbours tend to book in runs. It never hurts to mention if the house next door needs a roof too.
Frequently asked questions
Can equipment get down a steep Bonnet Bay block?
Yes. Gear is carried in and set up for sloping sites routinely. Where the rear drop needs scaffold or edge protection, the quote says so up front.
Why is the river side of my roof worse than the street side?
It usually gets more shade and less airflow, so it stays damp and grows moss faster. The whole roof is treated so it wears evenly from here.
Is moss removal permanent?
Nothing stops regrowth forever under heavy trees, but a proper clean plus membrane coat slows it dramatically compared with a bare weathered tile.