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Services · Flat Roofing · Dublin

Trocal Roofing Contractors in Dublin

Trocal is a high-performance PVC roofing membrane, and the flat roof we fit most. It goes down as one single layer, with every joint welded shut by hot air. That turns the whole roof into one sealed watertight skin, with no loose edges for the wind to catch. We install and repair Trocal on homes, extensions, and large commercial roofs across Dublin.

50+
years

Fully insured

Guild of Master Craftsmen

4.9 ★
rating

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Why us

Why choose HP Roofing for Trocal

Trocal single-ply specialists

Our crews fit Trocal PVC membrane day in, day out, with every joint hot-air welded into a watertight seal. The detailing is what makes single-ply last.

Five decades on Irish roofs

Family firm since 1969, fitting flat roofs across Dublin on homes, extensions, and large commercial buildings. We know how a roof has to perform in our climate.

Skilled, safe, insured crew

CSCS-carded operatives, an in-house safety officer, and full insurance cover so the work is done properly and safely from the first day to the last.

The system

What is a Trocal roof?

Trocal is a high-performance single-ply PVC membrane, and one of the longest-established single-ply names in Europe. It gets laid as one single layer over the roof deck. Every joint is then hot-air welded shut, melting the sheets into each other. That turns the whole roof into one watertight skin, rather than overlapping sheets that work loose. There are no glued laps to peel or lift.

Trocal is light and flexible, so it suits flat and low-pitch roofs without loading the structure. It can be specified for warm, cold, or inverted build-ups, on homes and commercial buildings alike. The welded membrane stands up to wind-driven rain and everything else an Irish roof takes. And because the surface is one sealed skin, there are far fewer weak points for weather.

How it works

From Inspection to Sign-Off

Most roof problems start small and quiet, then get expensive. If you have spotted any of these, it is worth getting them looked at before the next downpour.

Free inspection

We come out, get on the roof, and find exactly what is wrong.

Written quote

You get a clear, itemised price. No call-out charge, no pressure.

The repair

Our own crew carries out the work, tidily and on the agreed date.

Sign-off and aftercare

We show you what we did and stand over the work.

WHY TROCAL

Why The Trocal Name Matters

Plenty of membranes look the same on day one. The difference with Trocal is what it has already proven.

Decades On Roofs

Trocal is one of longest-established single-ply names in Europe, decades-old roofs still working.

System Guarantee

Fitted to specification, membrane carries manufacturer-backed guarantee alongside our workmanship cover.

Made To Be Welded

Every sheet is made for hot-air welding, so joints fuse as strong as the membrane instead of relying on glue.

Repairable For Life

A planted build-up over the membrane for a living roof, with drainage and aeration designed in.

Emergency work

Emergency repairs we carry out

A few recent repairs around Dublin. Real jobs, real homes.

How we work

Our Trocal installation process

Every Trocal roof starts with a proper look at the deck, the falls, and the existing detailing, so we fit the right system the right way. We agree on a fixed price in writing, prepare the deck.

And then lay the membrane and hot-air weld every joint into a continuous watertight skin, dressing it neatly into upstands, outlets, and gutters. When it is done, you get the paperwork, the guarantee, and a roof built to perform for the long term.

What Affects The Price

  • New membrane, a recover, or a weld repair
  • Roof area and how it is broken up
  • Mechanically fixed, adhered, or ballasted
  • Insulation for a warm roof underneath
  • Detailing at upstands, outlets and edges

Talk To a Consultant

01 453 3366

Real Feedback From Real Clients

Book A Free Roof Inspection In Dublin

No call-out charge, no obligation. We’ll tell you honestly whether it needs repairing or replacing.

FAQS

Frequently Asked Questions

Direct answers from an experienced, hands-on roofing professional.

A Trocal roof is a single-ply PVC membrane, fitted as one layer over the roof deck and hot-air welded at every joint so the whole roof becomes one watertight skin with no loose laps to lift in the wind.

Yes. The welded membrane forms a continuous watertight skin that handles wind-driven rain and our changeable weather well, and it can be specified for warm, cold, or inverted roof build-ups on both homes and commercial buildings.

Yes. Trocal is widely specified on commercial and industrial roofs. We fit it as a mechanically fixed, adhered, or ballasted system depending on the deck, the size of the roof, and how exposed it is.

Yes. We look at the roof first and then weld in repairs where the membrane is sound or recommend a recover or replacement where it is not. We will tell you honestly which one your roof needs.

Get your Roof Inspected By HP Roofing

Book a free, no-obligation inspection and we will tell you honestly what your roof needs.

Request A Quote

Get the contact details you need to connect with our team.