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Message: <blockquote data-quote="defcon1" data-source="post: 1748464" data-attributes="member: 30064">The latest report from THE SCHOOL OF CROCK... <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/rofl.gif"  class="smilie" loading="lazy" alt=":rofl:" title="rofl    :rofl:" data-shortname=":rofl:" />The RM 3.50 per sq ft bitumin flashing tape is doing it's job. Yesterday I drove to work with only the bitumin installed. No panels or moulding installed in the boot. The sound dampening was distinct. It wasn't so much that it was quiet, but the sound was softened and not harsh.Yesterday, I installed the Insuflex insulation sheets. I hardly had time to measure everything since I got back home late again. The biggest headache was cutting out the shapes for the sidewalls. But Insuflex is pretty forgiving...you can basically stretch and squeeze it in. Still, it wasn't a neat job. Dunlop rubber glue is messy stuff. For vertical surfaces, it makes sense to get self-adhesive forms of damping materials. My only consolation was that all this would be hidden under mouldings and panels later... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1425" alt=":smile:" title="Smile    :smile:" loading="lazy" data-shortname=":smile:" />The off-cuts, I just painted glue on and stuck them on any surface still exposed. You have to be careful to mark the holes for the moulding clips and cut holes in the Insuflex to allow you to re-attach the side mouldings later.This morning, I drove to work with only the bitumen and Insuflex installed. The rear of the car is much quieter now. But now, the noises from the front become much more distinct. Well, luckily I bought enough Insuflex for the whole car... :)Tonight, I reinstall the side mouldings and my MDF floor panels. The mouldings, other than being themselves sound dampening in nature, should lightly compress the Insuflex, thereby improving it's sound damping properties.My MDF floor panels are made of...er...MDF. MDF, although fairly homogenous, tends to be a very noisy material if not bolted down properly. Being a reasonably rigid material, and consisting of large flat surfaces, they also tend to resonate and contribute to audio deterioration.I've already cut out the forms of the 3 pieces that make up my floor panel. I intend to glue the Insuflex behind them so that when I put them back in, they will form another insulating layer. Tonight, we'll see. After this...the speaker panel behind the rear seats will receive a layer of Insuflex under it. I'll let you guys know later what happened.I'll be out of town for a few days, so I'll log in and post when I can... <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1425" alt=":smile:" title="Smile    :smile:" loading="lazy" data-shortname=":smile:" /></blockquote>