How to Soundproof Car Doors Using Materials from CarInsulation.co.uk A noisy car can be annoying, especially when road noise and vibrations creep into the cabin through the doors. Fortunately, sound-deadening your car doors is a relatively simple DIY project that can significantly improve your driving experience. In this article, we’ll guide you through the steps of soundproofing your car doors using high-quality insulation materials from CarInsulation.co.uk.