Heat reflective tape

Can anyone recommend a decent heat-reflective adhesive tape or sheeting?

Need something suitable to cover the underside of a bonnet to protect from engine heat, so needs to be either (preferably) adhesive on one side, or usable with a suitable spray on glue that won't fall off when it gets warm!

Possibly something like this?

Search that exact thing on eBay chopper ;)

that is the same stuff we use at work try a ducting place failing that I could see if theres a spare roll at work to forward on :thumb:

ring some chandlery shops too... one of our drivers has just done his engine bay out on his boat with sheets of heat proofing..