Smooth and painless process from start to end. Same day response to initial enquiry, arrived on time for agreed appointment, offered good advice and recommendations on options, received quote for work same day. Once confirmed the installer arrived on time, very polite and personable, undertook the work with a high degree of professionalism, everything cleaned and tidied at end of the working day. Work completed on schedule and nothing left outstanding to complete. Not sure you can ask more than what Insulmax® provided. Fully recommended