Looking for soundproofing and Heat Insulation alternates without stripping the interior

Hi there! I’m wondering if anyone has any tips on some affordable alternatives for soundproofing and heat insulation after a build has already added flooring and such without doing so. Ive been looking into creating custom curtains with heat reflecting fabric and heat reflecting window covers… Has anyone had luck with these and if so any links on materials would be helpful. Also thinking about lining the walls with used rugs or something of the sort… I have noticed after sleeping in the van that it can get quite noisy and we live in tropical weather so it can get extra toasty. Thanks in advance :blush:


Shade, opening windows with screens, and fans can be quite helpful.

Foam mats like listed below are about the best of the best.


"Popular doesn't mean practical, just better promoted for someone else's gain." ~ Money Matters