I used Dodo Mat DEADN Duo for the rear floor and the scuttle. It combines deadening mat with foam.
Dodo Dead Mat Duo - This unique product offers two essential layers in one simple application! With soundproofing, & insulation combined, this product is perfect for floor and boot areas of the vehicle and will kill vibrations, block noise and insulate the panels.
www.deadening.co.uk
For the scuttle, rather than tryIng to handle large pieces in a confined area, I initially cut some pieces about 150 x 200 mm. Then lots more of various sizes. Gradually sticking them on, measuring more, cutting to size, and so on. Covering as much of the area of possible. I warmed each piece with a hot air gun before application. It makes the mat/foam a lot more pliable and more sticky.
I had to use a small 2-leg puller to remove the wipers arms. Before I did that I marked the wiper positions at both ends on the screen with masking tape.
I couldn’t disconnect the plug on the wiper motor. After releasing the cable clips there was enough slack to move the wiper assembly out of the way.
To remove the plastic screen trim, I started to pull up and out from the drivers side first. It was pretty easy once it started to move. Be careful not to damage the wires to the heated screen. They hang from the bottom of the screen, under the plastic screen trim.
I guess it look me about 3 or 4 hours.
On a related note, my van had standard 16” 205 Hankook tyres. I’ve recently changing them to 16” 215 Michelin Agilis 3, before I deadened the floor and scuttle I might add. What a difference, the Michelins are so much quieter!
Next job is to sound proof the front floor area. Most of the van will have been done then..