Teardrops n Tiny Travel Trailers

My chassis is built, just awaiting the torsion axle. As the next step is my floor and i'm unsure about something - i thought i'd ask whats the common theory !
An insulated sandwich floor, i'm using "brush on" automotive under body protectant & sound deadener ( at least at this stage that’s what i'm thinking of using ).

My Question : Do i only coat the surface facing the road, or should i also coat the interior surfaces of the sandwich ? Or if need be should i use two different sealers in these two area's ?


Thanks all,

Niall.

I did a sandwich floor, I just coated the outside face towards the road.

My floor is kind of unusual, not a sandwich floor but not a solid one piece floor. Check my album to see how I did my floor. Everything that went into making the floor is painted on all sides. In the end I will apply automotive undercoating on the bottom. But I have it easy, just take it to work, up on the hoist and spray the undercoat on.
Brwbier

thanks for the input, one or otwo coats, roadside..........now thats bound to save me a few hours.

Thanks again.

Niall.