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Bituminous roofing is a flat roof waterproofing system using asphalt-based membranes, typically SBS or APP modified bitumen, applied in layers to form a durable, weather-resistant surface on flat and low-pitch roofs. The membrane sheets are designed to withstand structural movements and harsh Irish weather.
The installation of a bituminous flat roof Ireland system usually involves a multi-layer built up roofing Ireland system. The base layers are mechanically fixed or bonded, while the top layer features mineral granular chips to shield the asphalt from solar UV damage. Contractors use SBS bituminous roofing Ireland products for increased cold weather flexibility.
Constructors.ie connects homeowners across Ireland with verified bituminous roofing contractors in Dublin, Cork, Galway, Limerick, Waterford, and nationwide. Vetted local teams ensure correct installation that matches modern Irish building regulations.
The difference between bituminous roofing and single ply roofing is that bituminous roofing uses multiple built-up layers of asphalt-based membranes, whereas single ply roofing utilizes a single sheet of flexible polymer membrane. When comparing bituminous roofing vs single ply, multi-layer bitumen offers superior resistance to foot traffic and mechanical damage on complex roof areas. This is why it is common in Irish commercial construction.
Multiple redundant layers of membrane ensure that if one layer is damaged, the secondary barriers still prevent water leaks.
Mineral finished cap sheets provide high resistance to mechanical impacts, wind uplift, and heavy rain.
SBS polymers allow the asphalt to stretch in freezing temperatures and remain stable during summer heat peaks without tearing.
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The underlying deck is cleared of dust, dried completely, and coated with a quick-drying liquid bitumen primer.
A dedicated vapour barrier is bonded to the deck to prevent interior building moisture from entering the insulation core.
A high performance base sheet is rolled out, overlapping the seams, and fixed securely to create the first waterproofing line.
The heavy mineral surfaced modified bitumen cap sheet is rolled and bonded over the underlay, providing final weatherproofing.
We list fully insured bituminous roofing contractors operating across the entire Republic of Ireland and Northern Ireland. Vetted roofers are available for projects in Dublin, Cork, Galway, Limerick, Waterford, and all 32 counties.
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Bituminous roofing is a flat roof waterproofing system using asphalt-based membranes, typically SBS or APP modified bitumen, applied in layers to form a durable, weather-resistant surface on flat and low-pitch roofs.
Torch on felt is a type of bituminous roofing. The broader category includes built-up roofing (BUR) systems applied by pour and roll, self-adhesive modified bitumen, and cold-applied systems. Torch on felt specifically uses a gas flame to melt and bond the membrane to the substrate and previous layer.
A quality bituminous roofing system installed by a qualified contractor lasts 15 to 25 years depending on the specification, number of layers, and maintenance regime. SBS-modified systems generally outperform APP-modified systems in cold and wet Irish weather conditions.
Yes. Bituminous roofing is used on domestic extensions, garages, flat-roof houses, and commercial and industrial buildings across Ireland. It is one of the most widely specified flat roofing systems in the country. Contractors covering Dublin, Cork, Limerick, Galway, and all 32 counties are listed on Constructors.ie.
The cost of bituminous roofing in Ireland depends on roof area, number of layers, access, and whether the project is new build or overlay. Get free, no-obligation quotes from verified bituminous roofing contractors on Constructors.ie. Comparing three quotes is the most reliable way to understand current market pricing.
"High quality bituminous flat roof overlay completed on our garage. Robust material and neat detailing."
"Vetted roofers installed a modified bitumen system on our business unit. Excellent service and competitive pricing."