I have a 30 year guarentee certificate that was dated in 1977 for ICI Cavity Wall Foam insulation installed in my house. Is there likely to be a need to top up the insulation or renew it with a more modern variant - assuming that there is space for any more. Any guidance would be appreciated.
I HAVE THIS FOAM INSULATION INSTALED 30+YEARS
THE FOAM OUTSIDE OF THE CAVERTY IS TURNING TO DUST IN THE LOFT
HAS ANY ONE ELSE FOUND THIS