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How to Choose a Roof Installer in Sydney: What Matters in 2026
A homeowner in Strathfield called us last September after her
brand-new Colorbond roof had developed three leaks in eight months.
She’d paid $34,000 for a full re-roof. The installer had finished the
job, taken final payment, and gone quiet on her calls. By the time she
rang us, she was four months into trying to chase him down.
When we got on her roof, the problems were obvious. Wrong screw type
for her coastal area. Sheets cut without sealed edges. Flashings tucked
under instead of over. Sarking missing in two sections. The work was
apprentice-level on a job that needed an experienced installer. The
“installer” she’d hired turned out not to be licensed for roofing. He
had a building licence that didn’t extend to specialist roof work. By
the time she found this out, the bond required to chase him through Fair
Trading had run out.
She paid us another $11,000 to fix the worst of it. Upsetting story.
Completely avoidable.
This guide is for Sydney homeowners about to hire a roof installer.
It explains what actually matters when you’re picking someone to install
or replace a roof, what doesn’t, and the red flags we see homeowners
miss every week.
We’ve been installing and repairing roofs across Sydney for 14 years.
We’ve also rescued a lot of botched jobs from other installers, which is
where most of this knowledge comes from.
What
Actually Matters When Choosing a Roof Installer
1.
They hold a current NSW Fair Trading roofing licence (and let you check
it)
This is the single most important credential. NSW requires anyone
doing residential roofing work over $5,000 to hold a contractor licence.
The licence covers specific scope — “roofing tiling,” “metal roofing,”
or “structural landscaping” — and a builder licence does NOT
automatically include roofing scope.
How to check: go to the NSW Fair Trading website, use the “Licence
Check” tool, search the installer’s name or company. The result tells
you their licence number, scope, expiry, and whether they have any
complaints or restrictions on file.
If the installer hesitates when you ask for their licence number,
walk away. Reputable installers display it on their website, vehicle,
business cards, and quote.
2.
They carry public liability and workers’ compensation insurance
A roof installer climbs onto your house with materials and tools.
Things go wrong. Insurance protects you, not just them.
- Public liability: $20 million minimum. Covers
damage to your property and surrounding properties (e.g., if a roof
sheet falls onto a neighbour’s car). - Workers’ compensation: mandatory for any business
with employees in NSW. Covers injury claims by workers on your
property.
Ask to see certificates of currency. Reputable installers send them
with the quote without being asked. If you have to chase, that’s
information.
3.
They’re authorised by the manufacturer of the materials they’re
installing
Major roofing material manufacturers — BlueScope (Colorbond),
Stramit, Fielders, Monier (tiles), Boral (tiles) — operate authorised
installer programs. To get authorised, an installer has to demonstrate
proper installation techniques and meet specific quality standards.
Authorised installers can offer manufacturer warranties on the material
AND the workmanship.
Ask: “Are you authorised by Colorbond/Monier/Boral for warranty
work?” If yes, you get an extended warranty. If no, you get only a
workmanship warranty from the installer (often 7 years), and the
manufacturer’s material warranty becomes harder to claim if anything
goes wrong.
4.
They give you a detailed itemised quote, not a single number
A proper roof installation quote separates:
- Material costs. Exact product, quantity,
manufacturer, profile. - Labour. Installation hours and rate.
- Removal and disposal. Old roof removal, tip fees,
scaffolding hire. - Auxiliary work. Sarking, battens, ridge capping,
valley iron, flashings, gutters if included. - GST. Itemised separately.
- Payment schedule. Deposit, progress payments,
final. - Timeline. Start date, expected duration, weather
contingencies. - Warranty terms. What’s covered, for how long, by
whom.
A single-figure quote like “$24,500 for new Colorbond roof” is a red
flag. Either the installer doesn’t know what’s involved (bad), or
they’re hiding scope creep that’ll appear on the final invoice
(worse).
5. They walk the
roof in person before quoting
Quoting from photos or Google satellite is for emergency leak
repairs, not roof installations. A proper installer climbs onto your
roof, checks the structure underneath, identifies condition issues that
might affect installation (perished sarking, rotten battens, damaged
trusses), and factors that into the quote.
If an installer quotes without going on the roof, the quote is
unreliable. They’ll either find issues mid-job and demand more money, or
they’ll skip the necessary preparation and you’ll have problems within
five years.
6. They have a verifiable
track record
Three things to verify:
- Photos of recent jobs. Specifically, photos that
show the underside, the pre-tile, the pre-sheet work. Anyone can take a
finished-roof photo. Only people who do the work properly can show you
the bedding mortar, the sarking, the screws, the flashings being fitted
correctly. - References from jobs done 2+ years ago. Anyone can
give you a reference from last week. Two-year references show whether
the work held up. - Google reviews with detail. “Great job, very happy”
reviews are weak signal. Reviews mentioning specific situations (“they
came back six months later when I had a question and didn’t charge”) are
strong signal.
7. They explain trade-offs
honestly
A good installer says no sometimes. They tell you when a repair is
enough and you don’t need a full re-roof. They tell you when Colorbond
is a better choice than terracotta tiles for your specific house and
area. They tell you why their price is higher than a cheaper quote.
If every conversation is upselling you to the most expensive option,
that’s a sales operation, not a tradesperson.
What
Doesn’t Actually Matter (Despite Looking Like It Does)
1. Google ranking
The roofer at the top of Google for “roof installer Sydney” is paying
for that position or doing aggressive SEO. Neither correlates with
workmanship quality. Some of the best roofers we know don’t even appear
in search until page 3 because they get all their work from referrals
and word of mouth. Some of the worst we’ve seen are page-one
results.
Use Google to find candidates. Don’t use Google ranking to evaluate
them.
2. Lowest price
Roofing has fairly consistent material costs because most installers
buy from the same wholesalers. If one quote is 30% lower than the others
for the same scope, it’s almost certainly cutting corners somewhere —
fewer fixings, thinner sheets, no sarking, apprentice labour, or
skipping the disposal/clean-up.
The middle of the price range is where the genuine work tends to sit.
The lowest is usually a problem; the highest is sometimes a problem
(overheads + margin) but more often a sign of an established business
with proper insurance and warranty backing.
3. Friendly first impression
Most homeowners hire the installer they “got a good vibe from” during
the quote visit. Vibe doesn’t predict workmanship. The Strathfield woman
whose roof we fixed told us she’d hired the original installer because
he was “lovely, easy to talk to.” The competing quote was from a more
experienced operator who’d been “stand-offish.”
Ask hard questions. The installer who answers them honestly — even if
their answer is “I don’t recommend that approach because…” — is showing
you their actual work ethic. The installer who only agrees with you is
selling.
4. Years in business
A 25-year-old business with 25 years of bad habits isn’t better than
a 5-year-old business with proper training and modern materials
knowledge. Look at the actual work history, not the company age.
Red Flags — Walk Away If
You See These
- No physical address. Just a mobile number, no
website, no listed business address. Insurance and post-job follow-up
become impossible. - Cash-only or large cash deposit demands. Reputable
trades take EFT, card, or bank transfer. Cash-only is a red flag for tax
avoidance, lack of business structure, and inability to chase
warranty. - Pressure to decide today. “If you sign now I’ll
knock $1,500 off.” High-pressure sales tactics indicate a sales-led
operation rather than a tradesperson. - Quote significantly below market. As above. There’s
a reason. - No written contract. NSW Fair Trading requires a
written contract for residential building work over $5,000. No contract
= no legal protection if things go wrong. - Reluctance to give insurance certificates. Genuine
roofers provide them happily. Hesitation is information. - Promising a turnaround time that’s too good to be
true. “We can re-roof your house Monday.” A proper re-roof
takes 5–8 working days for a typical 200 m² home, longer if the
structure needs work. Anyone promising 2 days is doing a half-job. - Unwilling to explain what they’re doing or why. A
confident tradesperson explains. A sales rep avoids the technical
conversation.
The Practical
Vetting Process We’d Recommend
If you have an installer’s name and you’re trying to verify them:
- NSW Fair Trading licence check. 5 minutes online.
Confirms the licence is current and covers roofing. - ABN Lookup. 2 minutes. Confirms the business is
registered, GST-registered if they should be, and has been operating for
some time. - Insurance certificates. Ask for them in writing.
24-hour response time is reasonable. - Manufacturer authorisation. Call the manufacturer
(BlueScope, Monier, etc.) and ask if the installer is authorised.
They’ll tell you on the phone. - Two references from jobs done 2+ years ago. Call
them. Ask: “Was there anything they didn’t do well?” The answer reveals
more than asking what went well. - Drive past one of their finished jobs. Look at the
roof from street level. Check ridge alignment, flashing visibility,
gutter flow. - Google the installer’s name + “complaint” or “review” or
“lawsuit.” 10 minutes. Skip the testimonials they’ve curated;
look for what they haven’t.
The whole process takes about an hour. It will absolutely save you
from the wrong installer.
What This Looks Like with
Rosella
We’re a Sydney roofing contractor based in Ultimo, working across the
inner Sydney area. We’re licensed by NSW Fair Trading (licence number on
our quotes and on the website footer), insured at $20 million public
liability, and authorised by BlueScope for Colorbond installation work.
Our quotes are itemised. We physically inspect every roof before
quoting. We offer 12-month workmanship warranty on repairs and 25-year
manufacturer-backed warranty on Colorbond installations.
We’ve installed roofs on about 480 Sydney properties since 2012.
We’ve also fixed maybe 60 botched installations from other roofers —
that’s where most of this guide’s content comes from. We don’t enjoy
seeing other roofers’ bad work but it teaches us what to watch for.
If you’re after a roof installation quote, see our roof
tiling service page, our Colorbond
roof restoration page, or our roofing
FAQ. For broader context on choosing a roofing company, see our roofing
company Sydney guide.
FAQ
How much does
a roof installation cost in Sydney?
Colorbond installations on a typical 200 m² single-storey home run
$14,000–$24,000 depending on roof complexity, removal/disposal, and
sarking/insulation work. Tile installations are similar. Multi-storey,
complex pitches, and heritage requirements push the cost higher.
How long does a roof
installation take?
5–8 working days for a typical single-storey re-roof, longer for
two-storey or complex pitches. Add 1–3 days if the structure underneath
needs significant work.
Should I get multiple quotes?
Yes — at least three. Compare on like-for-like scope, not just
price.
Can I claim roof
installation on insurance?
Storm damage and tree-fall, generally yes. Wear-and-tear, no. We
provide insurance documentation for any work that’s the result of a
covered event.
What’s
the difference between a roofer and a roof installer?
“Roofer” is the trade. “Roof installer” usually refers specifically
to someone installing new roofing material (versus repairing existing).
Both should hold the same NSW Fair Trading licence scope.
Do roof installers do
gutter work too?
Most do. Some specialise. Check the quote — gutters and downpipes
should be itemised separately if included.
Is a written quote a
contract?
Not until both parties sign a contract document. The quote is an
offer; the contract is the legally-binding agreement.
This guide reflects current pricing and practice at Rosella
Roofing Sydney as of April 2026. NSW licensing rules are set by Fair
Trading and can change. For specific advice on your project, call our
office or use the contact form on this site.