HSGS39: Safe Use of Roofing Products Containing Diisocyanates

NFRC’s Technical team have produced guidance giving an overview of safe practices when manufacturing and/or using products containing diisocynates, and where to find training.

The use of polyurethane (PU) products containing diisocyanates is widespread across the roofing sector, including in liquid coatings, adhesives, and sealants. Diisocyanates are known skin irritants and sensitisers, eye irritants and respiratory sensitisers, which is why new REACH (Registration, Evaluation, Authorisation and restriction of Chemicals) labelling and training regulations are to be introduced to enhance the safety measures for users. Labelling regulations were implemented in February 2022, and training regulations are to be implemented by August 2023. NFRC's guidance note, HSGS39, gives an overview of diisocyanates and contains signposting on where to get training.