Our team completed this Fibreglass Roof Ennis project, installing a complete new flat roofing system including new insulation, plywood roof decking and a professionally applied fibreglass coating.
Rather than simply replacing the visible roof covering, this project allowed us to address the complete roof build-up. The insulation was renewed, a new solid plywood deck was installed, and the finished roof was protected with a seamless fibreglass waterproofing system.
This is an important distinction for homeowners. If an older flat roof has deteriorated underneath the surface, simply adding another waterproof layer on top isn’t necessarily the right solution.
By rebuilding the relevant components of this roof, we were able to provide the property with a properly prepared, insulated and waterproofed flat roofing system designed for long-term protection in Ennis and County Clare.
This was a complete flat roofing project rather than a localised patch repair.
The work included:
Each stage matters.
The finished fibreglass surface is what you see when the project is complete, but its performance depends heavily on the preparation and structure underneath.
The roof deck provides the solid surface onto which the fibreglass roofing system is installed.
If an existing deck is damaged, damp, uneven or deteriorating, covering it with a new waterproofing system doesn’t address the underlying problem.
For this project, new plywood was installed to provide a clean, solid and properly prepared base for the fibreglass system.
This gave us greater control over the finished roof and allowed the fibreglass layers to be installed onto a suitable surface rather than relying on an ageing roof deck.
It’s a good example of why homeowners should ask what’s happening underneath a new flat roof, not just which material is being applied on top.
The project also included new insulation.
If you’re already rebuilding a flat roof, it’s worth considering the thermal performance of the complete roof rather than viewing waterproofing and insulation as completely separate issues.
Poorly insulated roof areas can contribute to heat loss and make rooms beneath extensions and flat roofs less comfortable, particularly during winter.
Installing new insulation as part of the roof build-up allowed us to improve the roof beyond simply making it watertight.
The result is a roofing system designed to provide both weather protection and improved thermal performance.
Insulation is particularly important where a flat roof sits over a heated part of the home.
Garages and unheated outbuildings have different requirements from kitchen extensions, bedrooms and other living spaces.
For homeowners considering a replacement, this is one of the questions we’d recommend discussing with the roofer before work begins:
Are we simply replacing the waterproof covering, or does the roof build-up itself need improving?
The right answer depends on the existing construction and how the space underneath the roof is used.
Fibreglass roofing, often referred to as GRP roofing, creates a hard, seamless waterproof surface across the roof.
Unlike systems made from individual sheets or rolls, the fibreglass system is formed across the prepared roof deck and finished with a protective topcoat.
For suitable residential flat roofs, fibreglass offers several useful characteristics:
But we’d stress that fibreglass isn’t automatically the best material for every property.
The size, construction, movement, roof deck, drainage and detailing all need to be considered.
This is a useful question because we install different flat roofing systems depending on the property.
We’ve previously completed a new flat roof in Ennis using underlay and professionally applied hot torch-on felt.
This project used fibreglass.
That doesn’t mean one material is universally better than the other.
A well-installed torch-on felt system can provide excellent waterproof protection. A properly constructed fibreglass roof can also provide a durable, seamless finish.
As roofers, we’d rather assess the property, roof structure and intended use before recommending a system than tell every homeowner that one material is always the best choice.
Choosing fibreglass doesn’t remove the need for good roof design.
Despite being called a flat roof, the finished surface still needs appropriate falls to direct rainwater towards the drainage points.
This is particularly important in Ennis and County Clare, where prolonged rainfall will quickly expose problems with poor drainage.
Persistent ponding can indicate issues with:
A waterproof material can only do so much if the roof underneath hasn’t been designed to manage water correctly.
Local conditions are an important consideration when we’re installing any roofing system.
Homes in Ennis need to deal with regular rainfall, while properties elsewhere in County Clare can also face particularly exposed Atlantic conditions.
The areas most likely to cause problems aren’t always the large open sections in the middle of a flat roof.
We pay particular attention to:
These are the details where careful preparation and workmanship make a significant difference.
A leaking flat roof doesn’t automatically require complete replacement.
If the existing system remains in good condition and the problem is confined to one area, a professional repair may be the most sensible option.
We’d consider replacement more seriously where:
The important thing is to establish what’s actually failing.
Replacing only the surface of a roof with damaged decking underneath can leave the homeowner with the same fundamental problem hidden beneath a new covering.
This Fibreglass Roof Ennis project demonstrates what a complete flat roof replacement can involve.
Rather than focusing solely on the waterproof surface, the project included new insulation, new plywood decking and a complete fibreglass roofing system.
That gave us the opportunity to build the roof up correctly before applying the final waterproof finish.
For homeowners researching a similar project, you can read our complete guide to Flat Roofs Ennis, where we cover different flat roofing systems, common problems, drainage and when repair or replacement makes sense.
You can also view our New Flat Roof Ennis torch-on felt project to see a different type of flat roofing system we’ve installed locally.
If you’re considering a fibreglass roof in Ennis, we’d recommend looking beyond the finished coating.
Ask what condition the existing deck is in.
Ask whether the insulation needs attention.
Ask how the roof will drain.
Ask how edges, outlets and roof-to-wall junctions will be finished.
Those details will have a major influence on how the finished roof performs.
Complete Roofing Construction provides flat roof installations, replacements and repairs throughout Ennis and County Clare.
You can learn more about our roofing services or visit our dedicated Roof Repair Clare page if your existing roof needs attention.
If you’re also improving the exterior of your property, our sister company Complete Paving Works provides driveway, patio and paving services across Clare, Limerick and Galway.
Complete Roofing & Construction is a family-run business providing expert roofing, landscaping, renovations, plastering, and more—serving homes with quality craftsmanship and trusted service since 1990.
