How can I check if my cavity wall or external insulation contractor and products are certified with the National Standards Authority of Ireland (NSAI)?
NSAI recommends the following six steps all homeowners should take before deciding on an insulation contractor: Check that the contractor is an NSAI registered installer. A full list is available on NSAI website, Registered Installers Check that ALL products used are certified by NSAI, on Cavity Wall / External Insulation Check that the contractor is […]