The use of asbestos was banned in Ireland in 1999. However, many industrial, agricultural and commercial buildings constructed before the ban still have asbestos materials in their roofs. Over time, weathering and ageing can affect the condition of these roofs, creating the need for maintenance and refurbishment while minimising disturbance to the existing substrate. Asbestos roof encapsulation provides a practical alternative to roof replacement by sealing and protecting the existing roof surface with a waterproof coating system. Sika's liquid applied roof refurbishment solutions can be used to encapsulate asbestos cement roofs, creating a seamless, weather-resistant waterproofing membrane that helps protect the roof surface while extending its service life.
Asbestos Roof Refurbishment with Sikalastic®-625 N
It is vital to implement safety measures when encountering asbestos in buildings in order to prevent the release of harmful fibres into the air. Possibly the safest and most cost effective method is asbestos encapsulation within a seamless, protective coating. This involves relatively little disturbance of the material, therefore minimising the risk.
There are a number of benefits to encapsulating asbestos rather than attempting to remove it. Firstly, it eliminates the need to dispose of the removed asbestos, a process which can be costly and is subject to strict controls. Encapsulation work can also be completed quickly, thus reducing disruption, on-site time and all of the associated costs.
Sikalastic®-625 N is a liquid applied polyurethane waterproofing membrane suitable for the refurbishment and encapsulation of asbestos cement roofs. The membrane cures to form a seamless, fully bonded and elastic waterproofing layer across the roof surface.
By encapsulating the existing asbestos cement roof, refurbishment works can often be carried out with significantly less disturbance than would be associated with roof removal and replacement. The membrane provides durable weather protection while accommodating normal building movement through its elastic and crack-bridging properties.
Key benefits of using Sikalastic®-625 N for asbestos roof refurbishment:
- Seamless liquid-applied waterproofing membrane
- Suitable for asbestos cement roof refurbishment
- Elastic and crack-bridging performance
- Fully bonded waterproofing layer
- UV and weather resistant
- Suitable for roofs with complex details and penetrations
- Can help extend the service life of existing asbestos cement roofs
- Reduces the need for disruptive roof replacement works
- Has European Technical Assessment ETA-20/1023 of 2020/12/20
