Leaking Decromastic Tiles Replaced with Coloursteel in Blockhouse Bay
Client Name
Pedro
Project Length
4 days
Project Location
Blockhouse Bay, Auckland
Project Overview
When Pedro’s Blockhouse Bay home started leaking through its ageing decromastic tile roof, our team at HDK Long Run Roofing stripped the old tiles, reinforced the timber framework, and installed a full .55 Corrugated Coloursteel roof — all wrapped up in four days.
Services Delivered: Decromastic tile removal, re-purlining, underlay, .55 Corrugated Coloursteel roofing, flashings, internal gutter work
Need a decromastic roof replacement in Blockhouse Bay?
The Objective
Pedro’s decromastic tile roof had reached the end of its useful life. Leaks had appeared across multiple sections of the roof, and the property had several complicating details — internal gutters sitting right next to the upper storey and a set of unusual angled ridges that made a straightforward repair impractical.
Pedro needed a full re-roofing conversion to long run metal — a roof that would handle Auckland’s weather and put an end to the constant leak chasing.
Our Approach
- We started on the upper storey to minimise foot traffic damage across the lower sections while work was under way.
- Once the old decromastic tiles were stripped, we re-purlined the entire framework using 3×2 timber fixed every 900 mm with 80 mm blue screws — meeting current building code requirements.
- With the structure reinforced, we laid new underlay and installed the .55 Corrugated Coloursteel roofing and new flashings from ridge to gutter line.
The Challenges
The lower level presented two internal gutter sections that could not simply be flashed over. To get the 150 mm of clearance needed at the back of each gutter, we had to remove two weatherboards per gutter section.
That gave us the working space to set the gutter heights correctly and ensure proper water flow — a detail that would have caused drainage problems down the track if it had been skimped on.
The Solution
With the weatherboards temporarily removed, we positioned each internal gutter at the correct fall, sealed the joins, and reinstated the cladding once the gutter-to-roof connection was watertight.
The finished roof uses .55 gauge Corrugated Coloursteel — a profile rated for Auckland’s exposure zones — with all flashings, ridges, and barges replaced to match. Every fixing point was sealed and checked before we handed the job back.
Thinking about converting your tile roof to long run metal?
The Finished Result
Pedro’s Blockhouse Bay home now sits under a new Coloursteel roof — watertight, built to code, and completed on time and on budget within four days. No more leaks, no more crumbling decromastic tiles, and a roof rated to handle decades of Auckland rain and coastal conditions.
What We Are Most Proud Of
Delivered on schedule — Four days from strip to handover, exactly as quoted.
Solved the internal gutters properly — Removing the weatherboards to get the 150 mm clearance was extra work, but cutting corners there would have meant drainage failures within a few years.
A clean, consistent finish — Coloursteel corrugated from ridge to gutter with matched flashings, leaving the property looking sharp and fully weatherproofed.
HDK Long Run Roofing delivers decromastic tile conversions and full re-roofing services across Blockhouse Bay, West Auckland, and the wider Auckland region. Every job includes a free on-site assessment, clear pricing, and our four-day installation commitment.
Ready to replace your old tile roof?
Customer Feedback
“I was so impressed by the quality of HDK’s professionalism and workmanship. It was a seamless, stress-free experience, and very competitively priced. And the quality of their communication throughout was second to none. If you need a new roof, I thoroughly recommend HDK!”