Yes. But if you use an approved installer they will generally submit a Building Notice on your behalf as a matter of course.
Do I need Building Regulations approval to install cavity insulation into my house?
Where you see this symbol you can submit a question and we will add the answer to our pool of Frequently Asked Questions for the benefit of other users. Whilst using the website if you come across a term or word you do not understand, then you can submit it to our glossary and we will provide an explanation, which again will help other users. We try to use plain language where possible and your feedback will help. Thank you.