21 replies to this topic

[RawlinsGTR]

Hi all,

I've recently stripped off all the bitumen from the inside floor of my mini, and am now wanting to respray it to help prevent the buildup of rust.

Now, I've looked at the massive painting guide in this section, but I'm not sure whether that also applies to the floor on the inside of the car.

So, I'm asking kindly for some advice;

Do I either;
1. Follow that guide and just paint it as if it was the outside of the car,

or,

2. Do it differently. If so, how should I do it?

All comments/advice appreciated,

Simon.

[mike.]

When I did mine I chipped all the sound proofing off, then remove any remains of it with a wire brush attachment for a drill/grinder.

Then any area of surface rust where some moisture had been under the sound proofing I spent a bit longer on those bits with the wire brush cleaning them up and getting it all clean and degreased.

I then treated any surface rust or suspect areas with Kurust - Although I have since found Hydrate 80 from bilt hamber (google it) to be a much better product for this job.

Then I gave the whole floor a coat of red oxide primer and then hammerite. You could just apply hammerite straight to the floor but it sticks better to a keyed/rough surface and not so well to really smooth flat bits of metal like the floor, so thats why I primered it first.

That treatment has last a good few years now and kept the rust away on the inside even though the inside of my car gets quite damp and at the moment my car leaks in as i've not sealed the sliding windows properly yet - I just mop up the water every once in a while and its fine.

There some pics in the early pages of my project thread if you wana see.

[RawlinsGTR]

Great - thanks for the info mike.

[BMH]

I usually give the inside floors a good coating of stone chip and then a coat of paint when they have been cleaned up, also the stone chip will reduce a bit of vibration and road noise

[RawlinsGTR]

BMH; what do you start with, then go onto etc?

Give me a step by step idea of how you do it;

For example;
1. Red Oxide Primer
2. Stone Chip.
3. Paint.

Thanks,

Simon.

[firefox]

Hammerite is the way to go tried and tested if you are going to prime it use hammerite primer
i dint i just put a thick coat on it sticks like **** to a blanket

http://www.icipaints...tal_primers.jsp

Edited by firefox, 05 November 2011 - 02:26 PM.

[oliver122]

sorry to hijack , how much of kurust / Hydrate 80 would you need to cover the interior floor pan , as my idea was to use kurust all over , then zinc primer than hammerite ?

[firefox]

sorry to hijack , how much of kurust / Hydrate 80 would you need to cover the interior floor pan , as my idea was to use kurust all over , then zinc primer than hammerite ?

if you use hammerite it has a rust inhibiter in it

[sonikk4]

You can paint the floor normally, remove all signs of the bitumen, treat any surface rust with Krust or Jenolite or Bilt hamber but if the rust has pitted the metal you may need to think about replacing these sections.

Once all of the areas have been treated thoroughly degrease the floor and key it. Any bare metal areas give a light dusting of etch primer. Use a decent primer, flat back then top coat.

The biggest thing to remember here is to treat or remove the rust if you do not do this you will be wasting your time and materials.

[BMH]

BMH; what do you start with, then go onto etc?

Give me a step by step idea of how you do it;

For example;
1. Red Oxide Primer
2. Stone Chip.
3. Paint.

Thanks,

Simon.

Hi simon, i would do as follows

1 strip, clean up, cure rust ect
2 stone chip straight on the bare metal with a good coat, if you can, use professional stone chip (the chip you put on with a compressor and chip/shutz gun) not aerosol, remember to wear a mask when applying the chip.
3 paint, you can paint over stone chip, or you could just get black chip if it,s hidden by carpet.

Bryan.

[PaulColeman]

Each to their own and all that but why would you want to put stone chip on the inside of the floors? I would consider using it on the outside to protect it against stone chips and reduce noise but wouldn't personally put it on the inside.

Also, why would you want to use red oxide primer? A lot of people are under the misapprehension that red oxide has some rust preventing properties but as far as I'm aware it's nothing more than red primer. So unless you're painting your car red there isn't any real reason to use it. As somebody above said etch primer would be a better bet as the acid in it bites into the metal.

Just my opinion of course.

Paul.

[RawlinsGTR]

You can paint the floor normally, remove all signs of the bitumen, treat any surface rust with Krust or Jenolite or Bilt hamber but if the rust has pitted the metal you may need to think about replacing these sections.

Once all of the areas have been treated thoroughly degrease the floor and key it. Any bare metal areas give a light dusting of etch primer. Use a decent primer, flat back then top coat.

The biggest thing to remember here is to treat or remove the rust if you do not do this you will be wasting your time and materials.

Thanks mate. Just one question; what do you mean by "key it"?

Thanks to all others who have replied to.

[firefox]

You can paint the floor normally, remove all signs of the bitumen, treat any surface rust with Krust or Jenolite or Bilt hamber but if the rust has pitted the metal you may need to think about replacing these sections.

Once all of the areas have been treated thoroughly degrease the floor and key it. Any bare metal areas give a light dusting of etch primer. Use a decent primer, flat back then top coat.

The biggest thing to remember here is to treat or remove the rust if you do not do this you will be wasting your time and materials.

Thanks mate. Just one question; what do you mean by "key it"?

Thanks to all others who have replied to.

Put a circular corse wire brush in a grinder or drill and scratch all the bare metal this is keying

[RawlinsGTR]

Right, okay, thanks firefox

[firefox]

It all depends on what finish you want bud it is getting carpeted as sonikk said prepare it and paint it as he said to showroom finish
but to treat it and protest it if you are non bothered about showroom key it de-grease jenolite it which is a rust inhibitor clean it off as instructions, hammerite primer and the hammerite top coat flood it under and over all cavities and welds joins ect you wont be dissapointed