I got 20 bucks in credit to autozone on my next purchase and saw that dupli color has this bed liner spray that can also be used as a vehicle undercoating. has anyone done any undercoating and if so is there anything that you should'nt spray underneath?

 

cover up whatever u dont want to coat... and clean the metal real good so it will bond good. like the chasis clean wit a wire brush.. gl

 

Invest in a under coat gun. I bedlined a headache rack with one and it was absolutely amazing. Made even a cheap roll on liner (Plastikote in my case) look like a hurculiner job if not better. Undercoating the bottom of the cab will also help with road/engine noise. This is of course usually done from inside with a product such as lizard skin but the principle applies underneath as well. Just watch out for areas that can get hot (around the cats and make sure not to coat the heat shields.

 

any other place i should be worried about?

 

Avoid spraying bushings or any other are with fittings of any kind whether it be a plug for the wiring harness or the fuel lines and filters.

 

this is my other truck. i did the whole body in dupli-color bed liner! its strong and will never come off!