Insulation behind m923 seats

My cab Insulation behind the seats is pretty shabby. Has anyone found any locally sourced insulation that works decent? I re-insulated the hard top in my deuce with iso-mat (sleeping mat) but those things get expensive.

Also, was looking at dynamat as many have posted and need something maybe a little cheaper.

Foam board insulation. Cut to fix. Use spray adhesive to get it to stick. Then use the 4ft x 8ft x 3/4" thick rubber/fiberglass horse stall may from tractor supply. Wrap it across and secure it with self tap screws to the braces.

Another lost cost item I like to use is window flashing from Home Depot, Lowes, etc.
Get the aluminum backed stuff, something like this. Repair tape - Home Depot
I like to make sure the metal is dry and WARM. I like to use a little propane torch to heat the metal, then after applying the rubber flashing, I lightly heat that some and roll/press it on.
This stuff is cheap, and works GREAT for sound deadening panels. Around firewalls holes, floorboard holes, etc. for sealing up holes, drafts, etc.
Also, works good inside door panels to take out some of the metal / tinny sounds.

If you still have the original insulation, try the 3M spray adhesive for headliners. be generous with the application, and hold/press it in place afterward.

Ventilation is a good idea as its quite strong

Buffalobwana said:

If you still have the original insulation, try the 3M spray adhesive for headliners. be generous with the application, and hold/press it in place afterward.

Ventilation is a good idea as its quite strong

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Good idea!