Which Insulation Is Recommended

[Glennpea123]

Hello all, just started sound deadening my T6 and wondering which insulation is adequate enough to use before carpet lining. Deadening used is 4mm silent coat. Sooo foam (and what thickness) or the recycled plastic roll that b&q sell?
Cheers
Glenn

 

[Deaky]

Here's a few threads to look through

Search Results for Query: insulation | VW T6 Forum - The Dedicated VW Transporter T6 Forum