UK Landlord Forum / Life

Hi

Sorry, me again.
Does anyone have any experience or knowledge of the wall insulation units (almost like cladding) fitted to the external wall and internal bay window of old 1900 terraced houses? (protruding by approx 10cm from the external wall)
If so, are there any issues with damp / condensation / longer term potential issues falling out of warranty period etc?
I appreciate there are many efficiency / environmental benefits of potentially reducing heating bills, but are there any disadvantages?

Many thanks in advance for any advice.