Bedding & Pointing in Harrisdale
Builder-grade pointing often fails within a decade — flexible re-pointing fixes it for good. Serving Harrisdale 6112 and the northern corridor.
Fully licensed & accredited — Builders Registration BC105819 · Painters Registration PC102072 · Patent ID AU-A-2020100623
Bedding is the mortar bed the ridge and hip caps sit on; pointing is the flexible compound finished over the top. Over time the bedding cracks and the pointing perishes, the caps loosen and water gets under them. We lift the failed caps, lay a fresh mortar bed and re-point in a flexible compound that moves with the roof. It’s the most common roof repair in Harrisdale, and the core of any restoration. Free inspection, written quote, 10-year workmanship warranty.
Bedding and pointing in Harrisdale: the short version
Ridge and hip caps are held by a mortar bed and sealed with pointing. Both have a life, and when they go the caps rock loose and let water in at the very top of the roof. Re-bedding and re-pointing sets them solid again and seals the ridge line — a targeted fix, not a whole-roof job. We do the same work through nearby Hilbert; more on our bedding and pointing service page.
Why Harrisdale roofs behave the way they do
Harrisdale barely existed before 2007 and grew so fast that 95% of its residents moved in during a single five-year window. So it is, for inspection purposes, an almost entirely new-build suburb and the valuable work here suits young homes: practical-completion checks before handover, defect-liability inspections before the builder's warranty lapses. Early pre-purchase reports as the first faults appear. On a house this new, the slab, the site drainage and the workmanship are what an inspection concentrates on, not the wear of age. It adds up. One part of Harrisdale is worth calling out: Harrisdale Green, a government and Cedar Woods joint venture with an explicit emphasis on affordable and sustainable housing. Cost-driven and sustainability-focused builds can use efficient designs and sometimes lightweight or alternative materials. It is worth checking that the workmanship and detailing hold up, the promise of an efficient home only delivers if it was built properly. The suburb was converted from small farms and sits near the Forrestdale Lake wetlands. Some parcels carry made ground, old irrigation or shed slabs and the low areas have a water table worth noting. On the southeast plain's sandy-to-clay ground, correct site classification and slab drainage are the structural essentials. Being inland, salt-driven delignification is a low priority; Harrisdale's report is about building new and building it well, on former farmland.What that means for bedding and pointing in Harrisdale
On the newer estates around Harrisdale the surprise is how early the pointing fails — builder-grade rigid pointing can crack within a decade as the roof moves and the mortar shrinks. It’s one of the first things a pre-purchase inspection turns up on a ten-year-old home.
Re-pointing in a proper flexible compound fixes it for good, because it flexes with the roof rather than cracking the first hot summer.
It’s the same ridge work we carry out through Piara Waters and Haynes, and knowing the early warning signs saves you a stained ceiling.
Harrisdale roofs: symptom and fix
| What you are seeing | What it usually means | What it needs |
|---|---|---|
| Mortar crumbs in the gutter | Bedding and pointing at end of life | Re-bed and flexible re-point |
| A ridge cap visibly rocking or slipped | Bedding cracked, cap loose | Lift, re-bed, re-point |
| Cracked lines along the ridge pointing | Rigid pointing perished | Flexible re-point |
| Ceiling stain near a ridge or hip | Water tracking under a loose cap | Re-bed the caps, trace the leak |
Guide only. Every roof differs, which is why we inspect before quoting.
More roofing in Harrisdale
01Roof Restoration in Harrisdale
Learn more
Roof Restoration in Harrisdale
Learn moreA roof restoration renews a tired but sound Harrisdale roof for a fraction of replacement: we treat the moss and lichen, high-pressure clean, replace broken tiles, re-bed and re-point the ridge caps in a flexible compound, then seal and coat with a Dulux AcraTex membrane as accredited applicators.
It’s the right call when the tiles have decades left but the surface and pointing are gone — the same judgement we bring to nearby Hilbert. We’ll tell you honestly whether a restoration suits your roof or whether repairs or a re-roof make more sense, and the finished job carries both a manufacturer coating warranty and our 10-year workmanship warranty. Most Harrisdale homes take two to three days depending on the repairs needed before coating. As accredited applicators we prepare to the manufacturer’s specification, so the membrane actually holds — a coating only lasts if the surface beneath it was treated, cleaned and repaired properly first, which is exactly where a cheap spray-over fails within a couple of summers.
View roof restoration in Harrisdale →
02Roof Repairs in Harrisdale
Learn more
Roof Repairs in Harrisdale
Learn moreMost Harrisdale roof problems come down to a handful of failures: cracked or slipped tiles, perished ridge pointing, rusted valley irons and tired flashings. We trace the leak to its actual source — which is rarely under the ceiling stain — and fix the cause, whether that’s replacing matching tiles, re-bedding and re-pointing the ridge in a flexible compound, or renewing a corroded valley.
We’ll always tell you honestly when a roof is genuinely repairable versus when the repairs are mounting up and a restoration would serve you better, as it often does through nearby Piara Waters. Prompt repair matters: a single cracked tile left through a wet winter becomes soaked insulation, stained ceilings and, eventually, damaged roof timber. Every repair is backed by our workmanship warranty, and because we photograph what we find and talk you through it, you’ll understand exactly what was wrong and what we did about it rather than being handed a bill and a shrug.
View roof repairs in Harrisdale →
03Roof Cleaning in Harrisdale
Learn more
Roof Cleaning in Harrisdale
Learn moreRoof cleaning strips the moss, lichen and black weathering off a Harrisdale roof and gets it back to a clean, even surface — either as a standalone tidy-up or as the first stage of a restoration. We treat the growth first so it dies at the root, then clean at a pressure matched to the tile so we lift the grime without stripping the surface or driving water under the laps.
Left alone, that growth holds moisture against the tiles and works into the pointing, which is why we treat rather than just blast it — the same method we use through nearby Haynes. We check the roof over while we’re up there and flag anything that needs attention, so a clean doesn’t paper over a repair that’s quietly getting worse. On steeper or two-storey Harrisdale roofs we work off proper anchorage and stay off the tiles where we can, so the clean lifts the grime without cracking the very surface it’s meant to protect, and we’ll let you know if the roof would be better served by a full restoration.
View roof cleaning in Harrisdale →
04Roof Replacement in Harrisdale
Learn more
Roof Replacement in Harrisdale
Learn moreWhen a Harrisdale roof reaches the end of its life — porous tiles, rusted-through valleys, or a roof that’s been patched one too many times — a full re-roof is often the honest answer. We strip the old covering, check and repair the timber and battens underneath, and install a new tile or Colorbond roof with fresh sarking, valleys and flashings throughout.
A tile-to-Colorbond conversion is popular here for its lighter weight, clean lines and colour range, and because the lighter roof changes the wind uplift we reassess the tie-down as part of every conversion. We’ll also be straight about whether you’ve genuinely reached replacement or whether a restoration, as we do through nearby Forrestdale, would renew the roof for a fraction of the cost. Every re-roof is engineered and tied down to Australian Standards and backed by our 10-year workmanship warranty, and we handle the guttering, flashings and tie-down as one job so nothing is left for you to chase afterwards.
View roof replacement in Harrisdale →
05Roof Carpentry in Harrisdale
Learn more
Roof Carpentry in Harrisdale
Learn moreRoof carpentry is the structural timber under your tiles — the rafters, battens and trusses that hold everything up. On Harrisdale homes we repair and rebuild that framing to standard: sistering weakened members, replacing rotted or termite-damaged timber, and reinstating trusses that have been cut for a skylight, duct or downlight.
We also test for delignification, the chemical breakdown that leaves roof timber looking sound but unable to hold a fixing — the same treatment we carry out through nearby Bedfordale where the timber is worth saving rather than replacing. As registered builders we can certify structural carpentry, which a general handyman can’t, and we assess the whole load path while we’re in the roof space so a repair addresses the cause, not just the symptom. Where a member is load-bearing we prop it safely with acrow props and work to a structural engineer’s design before anything is cut — it’s the natural companion to our tie-down and structural-defect work.
View roof carpentry in Harrisdale →
06Roof Inspection in Harrisdale
Learn more
Roof Inspection in Harrisdale
Learn moreA roof inspection is the cheapest way to know exactly what your Harrisdale roof needs before you commit to anything — or before you buy. We get onto the roof and into the roof space, physically checking the tiles, pointing, valleys, flashings, gutters and the structural timber, then hand back a clear written report with photographs.
On older homes we test the timber for rot, termite damage and delignification; on newer ones we look for the builder-grade detailing faults that leak early. It’s the same thorough check we run through nearby Hilbert, and it’s what tells you whether a roof needs a minor repair, a restoration or something structural. If you’re buying a home, an inspection of the one part most people skip — the roof space — is money very well spent, and the written report gives you something concrete to put in front of an agent, a buyer or your insurer rather than a verbal all-clear.
View roof inspection in Harrisdale →See all roofing services in Harrisdale, or read more about our roof inspection service across Perth.
Signs a Harrisdale roof needs re-pointing
- Mortar crumbs washing into the gutters
- Ridge or hip caps that look slipped, uneven or are visibly rocking
- Cracked, powdery pointing along the ridge line
If you can see any of that on your Harrisdale roof — or one you’re buying in nearby Forrestdale — it’s worth doing before winter. See also the signs a roof needs attention.
Local conditions in Harrisdale
Overwhelmingly post-2007 new-build (95% moved in 2006-11). New-build inspection: PCI/handover, defect-liability, early pre-purchase; slab-on-ground performance the key structural check.
Harrisdale Green sustainability/affordability focus, specific construction types (efficient design, sometimes lightweight/alternative materials); worth checking workmanship on cost-driven builds.
Built on former small farms, made ground, old irrigation/shed slabs on some parcels; near Forrestdale Lake wetlands = water table in low areas.
We cover the whole of the City of Armadale. Around Harrisdale that takes in Piara Waters, Hilbert, Haynes, Forrestdale and Kwinana. Short drives keep roof replacement affordable on smaller jobs and most of ours are smaller jobs.
Materials and specification
The compound matters. Rigid sand-cement pointing looks fine on day one and cracks out as the roof moves — which is why we finish in a flexible pointing compound designed to flex with the tiles and hold for years. The mortar bed underneath is laid to a proper mix, not thrown in.
Re-bedding and re-pointing is also the foundation of a full roof restoration: there’s no point coating a roof over a ridge line that’s about to let go, so we always sort the capping first. It’s worth checking any roofer uses flexible pointing before you hire them.
A little about Harrisdale
Southeast plain; near Forrestdale Lake wetlands; Pinjarra Plain / sandy-clay Converted from small farms; between Tonkin Hwy and Kwinana Fwy; family/married-with-children demographic; shopping/schools None of that decides what your roof needs. It does tell us what to expect before we get the ladder out in Harrisdale.
What the work involves
- Lift and assess. We lift the loose or cracked caps, check the tile and batten underneath, and clear the old bed back to a sound surface.
- Fresh mortar bed. The caps are re-bedded on new mortar, set true to the ridge line so they sit solid rather than rocking.
- Flexible re-pointing. We finish with a flexible pointing compound — not rigid mortar — so it moves with the roof and doesn’t crack out again the first hot summer.
- Check the ridge over. While we’re up there we flag anything else the ridge needs, and pair it with a restoration where the whole surface is due, not just the caps.
Common questions about bedding & pointing in Harrisdale
What’s the difference between bedding and pointing?
Bedding is the mortar bed the ridge caps sit on; pointing is the flexible compound finished over the top to seal them. Both wear out — when they do, the caps loosen and water gets under. We renew both.
Why does the pointing keep cracking?
Almost always because rigid sand-cement pointing was used. It can’t move with the roof, so it cracks the first hot summer. We use a flexible pointing compound that flexes instead — it’s the difference between a fix that lasts and one that fails again.
Is re-pointing worth it or should I just re-roof?
If the tiles and structure are sound, re-bedding and re-pointing is a fraction of a re-roof and buys years — read how long a Perth roof should last. If the whole roof is at end of life we’ll say so rather than pointing a roof that needs replacing.
Can you match the mortar colour?
Yes — flexible pointing comes in a range of colours, so we finish the ridge to suit the tile and the house rather than leaving a mismatched grey line down the roof.
Do you re-bed and re-point throughout Harrisdale and nearby?
Yes — across Harrisdale and neighbouring suburbs including Hilbert and Piara Waters. Ring 0421 768 842 and tell us your street. If the ridge doesn’t need it we’ll say so rather than quoting anyway.

Dulux AcraTex accredited applicators
Powerdrive Roofing is an accredited applicator for the Dulux AcraTex roof restoration system, so your coating carries the manufacturer’s product warranty alongside our own 10-year workmanship warranty. How the Dulux AcraTex warranty works →
What Perth homeowners say
Two hundred and six people have reviewed us on Google. If we have worked on your roof, adding yours genuinely helps the next person deciding who to trust with theirs.
Request a free inspection
Tell us about the roof and we will come and look at it. Free inspection, written quote, no obligation.
Need your roof sorted? Let's talk.
Tell us about your roof and the problem, we'll tell you the likely cause and what it'll take to fix.
