sorry but i am new i just now bought a 87 dodge ram and there was no carpet and lucky no rust, so i was wondering before i pull out everything would it be good idea to get spray on undercoat to do the entire floor. what would be pro and cons of doing this. also it came with a box under the seat that when you push a button it open up is this normal

 

http://www.moparmusclemagazine.com/t.../photo_11.html

like they did here

 

I'd use bedliner instead of undercoat. I've had undercoat get scraped off of things fairly easily, but never with bedliner unless it takes a severe hit. Are you putting a carpet or rubber mat over it? I'd imagine carpet or a mat would deaden the sound much more and keep you toasty in the winter.

 

I would go ahead and do it, or bedliner which is more durable, depending on where you live the trucks seem to always leak in wet weather and the carpet gets wet and rust starts underneath

 

If you are not in a hurry I would use the undercoating but it does take time to dry. Undercoating is designed to do exactly what you want for a reasonable price. Bedliner is more abrasion resistant, a quality that doesn't matter in this application, but is a lot more expensive.

If you plan to do more than one vehicle you should look at a roll of stick on roofing that is meant to be used to prevent roof ice dam damage. I have used it for panel vibration control especially in stereo installs. You want the smooth kind if possible instead of the kind with granules on the surface. It works just like Dynomat at a much lower price.

 

so it would be a good idea and since i live in fl would the heat affect the undercoating. like smell and make it sticking

 

There are different types of undercoating. Stay away from the ones with asphalt in them. Rubberized undercoating becomes a solid polymer when completely dry. It doesn't become sticky and there is no smell. Drying to a solid does take a while that is why I said if you are not in a hurry. This is the best time of year to do it due to the heat helping it dry. High heat surfaces like the exhaust or converter will burn the under coating off if applied directly to them but with a small air gap even those high heat things won't effect it on the frame or body.

 

i have 3M™ Professional Grade Rubberized Undercoating lying around in my garage would this work but i can't find what in it so would it smell and get sticky. also thanks for all the replies i thought about bed liner but it to much money.

 

wait i found out the answer it does contain asphalt. so it wouldn't work

 

would rust oleum PROFESSIONAL UNDERCOATING work