Under bonnet (hood) insulation

Simufly

Simufly

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Anybody had a problem with the foam rubber insulation under the bonnet (hood) deteriorating and starting t break up and turn to powder? All I am left with is a very nasty sticky area that is proving very difficult to clean off the remains of the adhesive.
 
3M citrus adhesive remover. Worked great and no paint issues. Plastic putty knife.
 
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Just regurgitating an old post re under bonnet insulation subject.

Wondering if the grey/black foam type insulation is really necessary? Mine does not have any insulation (my bonnet is aluminium). So should I be worried that my bonnet will be heat compromised without insulation? / Will the bonnet paint become too hot and deteriorate?

I would prefer not to put under bonnet insulation on as it looks much neater and cleaner without it. But what is the consensus on it's functionality benefit?

(PS Actually I notice my engine never gets really hot anyway)
 
mine deteriorated and made quite the mess while decomposing. As Stevehose has mentioned, plastic putty knife is gentle, and I used engine degreaser as a solvent. Went at it in stages. Paint was saved. Looks clean and shiny and I haven't replaced foam. Not sure I will.
 
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