
Encapsulated roof
Completed white coating on an asbestos cement roof at SAICA, Warrenpoint, County Down.
- Sheets left in place
- Northern Ireland project
Keep ageing asbestos cement roofs in County Galway in place, sealed and watertight with the GacoFlex asbestos roof system. Many farm buildings, factories and warehouses in County Galway still have corrugated asbestos cement roofs. As the sheets weather they become brittle, porous and harder to keep watertight. Encapsulation seals the surface and waterproofs the roof while the sheets stay where they are.

Farming changes as you travel west through County Galway. Teagasc describes drystock and dairying on the lowlands of its Galway/Clare region, with suckler, sheep and mixed farms taking over in the hillier west, and around 20,000 farmers served in total. Ballinasloe’s horse fair, held since the 18th century, started out as a cattle and sheep market. West of Lough Corrib lies Connemara, bounded by Killary Harbour, Galway Bay and the Atlantic. From the Shannon side to the Twelve Bens, corrugated asbestos cement roofs on sheds and haybarns are a familiar sight. Many haybarns in the county are open-sided, which leaves the underside of the roof exposed to the weather as well.
No synoptic station in County Galway has published 1991–2020 averages, so the nearest Met Éireann reference is Shannon Airport, at 1,019.7 mm a year. Met Éireann notes that rainfall in the west generally runs between 1,000 and 1,400 mm, and that many mountainous districts exceed 2,000 mm — an exposed roof in Connemara may see considerably more than the Shannon figure. Persistent wet weather and coastal exposure erode fibre-cement sheets, encouraging lichen and moss and opening cracks at laps.
Gaco’s urethane coatings for asbestos cement, U91 and U92, form a seamless film over the prepared roof, sealing in the weathered surface and stopping water getting through cracks and laps. On exposed western sites, the installer pays close attention to fixings, ridge pieces and sheet edges, where wind uplift is greatest, and secures anything loose before coating. Application needs a dry weather window and surface conditions inside Gaco’s limits, and in the west those windows can be short. Duratite supplies the system and routes Galway enquiries to an approved installer. Roofs on older farm buildings often carry a patchwork of repairs — odd replacement sheets, bitumen patches and mixed fixings — each of which needs assessing before a coating can go over it.
The legal framework is the Safety, Health and Welfare at Work (Exposure to Asbestos) Regulations 2006, as amended in 2010 and again in 2025, enforced by the Health and Safety Authority. The installer’s assessment covers whether the work is notifiable, how the roof will be reached safely given that the sheets are fragile, and how cleaning water and debris will be contained. Galway County Council is the building control authority for sites outside Galway city. Where the building houses livestock, animals are kept clear of the area beneath the work.
It depends on roof area, condition, access and the specification, so we do not publish prices. After the free survey you receive a written quotation in euro from the approved installer.
Removal needs specialist contractors, disposal and a replacement roof. Encapsulation leaves the sheets in place.
Livestock sheds, stores and production buildings cannot easily be emptied for a roof replacement.
Hairline cracks, failed laps and fixings let water in. The coating system bridges and seals them across the whole roof.
Older sheets lose their surface, grow moss and lichen and become porous. Encapsulation seals that weathered surface.
A Northern Ireland project, photographed on site. The SAICA Warrenpoint roofs combined closed-cell roofing foam with a GacoFlex U91 base coat; the build-up for each roof in County Galway is set at survey.

Completed white coating on an asbestos cement roof at SAICA, Warrenpoint, County Down.

SAICA, Warrenpoint, County Down: closed-cell roofing foam spray-applied from the walkway system over asbestos cement (Northern Ireland project).

GacoFlex U91 base coat applied over the cured foam at SAICA, Warrenpoint.
Work on asbestos-containing materials in the Republic of Ireland is governed by the Safety, Health and Welfare at Work (Exposure to Asbestos) Regulations 2006 (S.I. No. 386 of 2006, as amended by S.I. No. 589 of 2010 and S.I. No. 632 of 2025).
Since the 2025 amendment, notifiable asbestos work needs an HSA permit before it starts, supported by the notification, a plan of work and a risk assessment. The installer’s programme for your County Galway roof builds that lead time in.
Every project is survey-led and risk-assessed, and notified to the Health and Safety Authority (HSA) where required.
Because the sheets stay in place, they remain part of the building’s asbestos records after the work in County Galway.
Straight answers to the questions building owners and managers ask most often.
Yes. Duratite Ireland takes enquiries from County Galway and routes them to an approved installer of the GacoFlex asbestos roof system who covers County Galway. We do not have a branch office in County Galway; the survey and application are carried out by the approved installer.
No. Encapsulation seals the asbestos cement sheets and makes the roof watertight, but the sheets stay in place, so they remain part of the building’s asbestos records.
Allow for the survey, the specification and the HSA permit, which must be in place before notifiable asbestos work starts. The installer plans the programme around it.
Often, yes, because the work is carried out on the roof with the sheets left in place. The installer’s risk assessment sets out any restrictions for your building.
If the survey finds the sheets structurally sound, yes. The roof is prepared, sealed with GacoFlex U91 and U92 encapsulation coatings and, where specified, finished with a GacoFlex silicone topcoat. The sheets stay in place, so there is no removal or disposal.
In the Republic of Ireland, the Safety, Health and Welfare at Work (Exposure to Asbestos) Regulations 2006, as amended most recently by S.I. No. 632 of 2025. Notifiable asbestos work now needs an HSA permit before it starts, supported by the notification, a plan of work and a risk assessment.
It depends on roof area, condition, access and the specification, so we do not publish prices. After the free survey you receive a written quotation in euro from the approved installer.
Yes, but patience is part of the job. The coating needs a dry surface and conditions within Gaco’s limits during application and curing, and in the west dry spells can be short. The installer monitors forecasts, may coat a roof in sections, and will stop work if rain threatens rather than risk a poor finish.
Usually. Met Éireann notes rainfall rises towards the west and in upland areas, and coastal sites are more exposed to wind. That affects how quickly sheets erode and how carefully fixings and edges need securing. But the condition survey of your roof matters more than any county average when deciding whether encapsulation is suitable.
Yes. A coating seals weathered, sound sheets; it is not designed to bridge holes or badly cracked sheets. Broken sheets are replaced with suitable non-asbestos sheets before coating begins, and removing and disposing of the damaged ones is itself asbestos work under the 2006 regulations as amended, so it is handled within the installer’s risk assessment.
The GacoFlex asbestos roof system, how encapsulation works and every area we cover.
Spray foam insulation, surveyed and installed by approved installers.
Commercial roof waterproofing, surveyed and installed by approved installers.
County · Republic of Ireland
County · Republic of Ireland
County · Republic of Ireland
County · Republic of Ireland
County · Republic of Ireland
Town · County Clare · Republic of Ireland
What the 2025 amendment means for roof owners, and the Northern Ireland rules.
Condition, management options and the rules that apply before any roof work starts.
Asbestos cement roofs encapsulated in place at an industrial plant in Warrenpoint, County Down.
Every county in Ireland and Northern Ireland.
Tell us about your building and we’ll recommend the right system — foam, waterproofing or both — surveyed, specified and quoted at no cost.