How can I quieten a Landrover Defender? Sound Deadening

Car Builders take on a Landrover classic, the Defender and show the DIY owner how they can add sound deadening to quiten this 4x4 to make a more comfort ride when touring.
Materials used in this video:
Car Builders Land Rover 90 pack
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SKU: LROVER_90 AU $735.00
7.2sq/m of Stage 1 Sound Deadener - Install on your floor pan, doors & roof skin as a vibration dampening mat to control panel resonance.
3sq/m of 6mm Insul-Layer - Light weight, closed cell, peel and stick foam, apply to roof skin as a thermal and acoustic barrier on your roof skin.
2.6sq/m of Mass Loaded Vinyl - Stage 2 Sound barrier, apply to floorpan and seat boxes, at 2mm thick will fit under factory Land Rover rubber mat.
2.6sq/m of Sound Barrier Floor Mat - Stage 2 Sound blanket, durable finished face floor coating, no rubber or carpet required.
NOTE to fit this material you will require a spray grade contact adhesive
1 x Install kit - Includes 1 x application roller, 1 x utility knife, 1 x roll of foil tape
A 2-Door Restore Kit
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