Should I block the ends of box section?

macafee2 · 27th October 2020, 18:51

I am in two minds and both make sense.

My trailer chassis has some 1 inch (external) square box section running the width, about 6 feet.
The box section holds the mudguards and acts as support to the base of the trailer. It is only a lightweight trailer.

I have had the trailer 20 years and the box section may originally been galvanised or painted with galvanised looking paint. I have had the box section replaced due to rust in line with the tyres. I think driving rain and grit has caused the rust.

I have managed to paint the inside of the box section and am wondering if I should put square bungs in the ends of the box section to prevent water getting in. My concern is if water gets in, it will struggle to get out and therefore rust the box section. Should I leave the ends open so water can get in and out and also air can get into the box section?

macafee2

27th October 2020, 18:51	#1
macafee2 This is my second home Rover 75 Saloon & Tourer Join Date: Sep 2012 Location: Lincoln Posts: 14,952 Thanks: 1,630 Thanked 3,032 Times in 2,181 Posts	Should I block the ends of box section? I am in two minds and both make sense. My trailer chassis has some 1 inch (external) square box section running the width, about 6 feet. The box section holds the mudguards and acts as support to the base of the trailer. It is only a lightweight trailer. I have had the trailer 20 years and the box section may originally been galvanised or painted with galvanised looking paint. I have had the box section replaced due to rust in line with the tyres. I think driving rain and grit has caused the rust. I have managed to paint the inside of the box section and am wondering if I should put square bungs in the ends of the box section to prevent water getting in. My concern is if water gets in, it will struggle to get out and therefore rust the box section. Should I leave the ends open so water can get in and out and also air can get into the box section? macafee2