
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 Sligo in place, sealed and watertight with the GacoFlex asbestos roof system. Asbestos cement roofs are common on agricultural and industrial buildings across Sligo and the wider County Sligo area. Encapsulation is a survey-led way to deal with weathered sheets: they are prepared, sealed with GacoFlex encapsulation coatings and made watertight, without removal.

Sligo town is the North West’s main urban centre, with 20,608 people at Census 2022 and a ring of nearby settlements including Strandhill, Rosses Point, Ballysadare and Collooney. It is also IDA Ireland’s regional base. The Finisklin Business & Technology Park, a 45-hectare IDA site, anchors foreign direct investment in the region, and IDA has added a fast-start office called the Landing Space in the town centre for new arrivals. Sligo County Council is the local authority for the town as well as the county.
Towns like Sligo carry a mixed stock of roofs. Alongside modern offices there are older workshops, stores, garages, depots and commercial premises, many put up or extended at a time when corrugated asbestos cement was a routine choice for a low-cost industrial roof. Some of those buildings now house very different businesses from the ones they were built for, and their roofs have rarely had attention. A leak over a stock room, a server cupboard or a customer area gets noticed quickly, and it is usually then that an owner discovers the roof is asbestos cement.
Sligo’s weather does those roofs no favours. No station in County Sligo has a full published Met Éireann normal, so Belmullet in Co. Mayo is the nearest long-term reference, recording about 1,242 mm of rain a year over 1991 to 2020. Persistent wet weather erodes the cement surface and works at the laps, fixings and rooflights of a commercial roof. Encapsulation seals it in place. Gaco urethane coatings, U91 and U92 being the grades used on asbestos cement, are applied over the existing sheets to form a continuous waterproof layer, avoiding the disruption of stripping the roof off a working building. The approved installer surveys the roof, records vents and rooflights, replaces broken sheets and prepares the surface without abrasion. Duratite supplies the materials, and the approved installer carries out the work.
For a business, the legal side is straightforward to set out. The Safety, Health and Welfare at Work (Exposure to Asbestos) Regulations 2006 (S.I. No. 386 of 2006, as amended) apply to work that could disturb asbestos, and the Health and Safety Authority enforces them. The installer’s risk assessment covers notification, safe access to a fragile roof and control of debris. Sligo County Council is the building control authority; if the roof insulation is changed, TGD L 2022 applies. The island-of-Ireland reference project for this work is SAICA Warrenpoint, Co. Down.
For a Sligo town premises, say whether you own or lease the building, what the business below does, and whether there are rooflights, extract fans or signage fixed to the roof. That helps the approved installer plan a survey that fits around your opening hours.
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.
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.
Asbestos cement sheets are fragile. The work is planned with safe access so no one relies on the sheets for support.
Removal needs specialist contractors, disposal and a replacement roof. Encapsulation leaves the sheets in place.
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 Sligo 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 Sligo 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 Sligo.
Straight answers to the questions building owners and managers ask most often.
Yes. Duratite Ireland takes enquiries from Sligo and the wider County Sligo area and routes them to an approved installer of the GacoFlex asbestos roof system who covers County Sligo. We do not have a branch office in Sligo; the survey and application are carried out by the approved installer.
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.
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. The sheets stay in place and the coating is applied from outside, so trading can usually continue. The installer’s risk assessment identifies any areas to be cleared, such as under a sheet being replaced, and the timing is agreed with you.
Check your lease for who is responsible for the roof, then arrange a survey. The approved installer will assess whether the sheets are sound enough to encapsulate and set out the regulatory steps under the Exposure to Asbestos Regulations 2006, as amended.
They are part of the survey. Rooflights may be protected, sealed around or replaced, and vents and flues are detailed so the coating keeps the roof watertight at every penetration. Anything that needs switching off is agreed beforehand.
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
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.