Rattle-can over primer bad in the long term?
Rattle-can over primer bad in the long term?
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Discussion

Efbe

Original Poster:

9,251 posts

195 months

Monday 3rd February 2014
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Picking up a 1967 california classic on saturday.

The car has been painted over in matt red oxide (I assume primer) presumably due to the californian sun.
It's going to take months and months worth of work, and though it will be garaged, I would like to protect it from Yorkshire's damp and constant drizzle.

Was thinking of masking it off and giving it a DIY rattle can session in matt black or similar.

yes it will look rubbish for now, but I'm not too concerned about that. Will this make preparing the car for a complete respray in the future more difficult/costly?

Hooli

32,278 posts

229 months

Monday 3rd February 2014
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What's the point? surely the primer will protect it anyway?

Efbe

Original Poster:

9,251 posts

195 months

Monday 3rd February 2014
quotequote all
Hooli said:
What's the point? surely the primer will protect it anyway?
it's porous paint. will just absorb water i think

felixlighter

228 posts

176 months

Tuesday 4th February 2014
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Wipe it over with an oily rag for protection

Skyedriver

23,321 posts

311 months

Tuesday 4th February 2014
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Many primers are porous.
I rattle canned a few bare/primered patched on my ol mini as it was under a long term rebuild.
When I came to respray in celly, the stuff underneath reacted. reacted. reacted.
Gave up. Still like that 8 years on.....

V8s ONLY

266 posts

227 months

Tuesday 4th February 2014
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Don't use matt or satin paint as it's as porous as primer usually.

Efbe

Original Poster:

9,251 posts

195 months

Tuesday 4th February 2014
quotequote all
V8s ONLY said:
Don't use matt or satin paint as it's as porous as primer usually.
cheers, wasn't aware of that!

was considering satin black as wellsmile

Hooli

32,278 posts

229 months

Tuesday 4th February 2014
quotequote all
Efbe said:
Hooli said:
What's the point? surely the primer will protect it anyway?
it's porous paint. will just absorb water i think
I never knew that about primer, learn something everyday.

Talkwrench

910 posts

262 months

Wednesday 5th February 2014
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If you want to 'rattle can' it, use Bilthamber Electrox primer. It'll protect it indefinitely and won't react with anything later.
Yes, primer is porous and will hold moisture.
No, definitely don't wipe over with an oily rag! The oil will absorb into the primer and make painting at a later date even more difficult.
No, don't use rattle can satin black unless it is an acrylic based paint.
If it is just to protect, nothing beats Electrox. It is also a superb primer for the finished repair before painting. To save money, buy it in litres (or 5 litres), buy a cheap spray gun and spray it properly. It'll be cheaper, protect even more thoroughly (the paint isn't as thin) and will be good practise for you smile

Efbe

Original Poster:

9,251 posts

195 months

Wednesday 5th February 2014
quotequote all
Talkwrench said:
If you want to 'rattle can' it, use Bilthamber Electrox primer. It'll protect it indefinitely and won't react with anything later.
Yes, primer is porous and will hold moisture.
No, definitely don't wipe over with an oily rag! The oil will absorb into the primer and make painting at a later date even more difficult.
No, don't use rattle can satin black unless it is an acrylic based paint.
If it is just to protect, nothing beats Electrox. It is also a superb primer for the finished repair before painting. To save money, buy it in litres (or 5 litres), buy a cheap spray gun and spray it properly. It'll be cheaper, protect even more thoroughly (the paint isn't as thin) and will be good practise for you smile
cheers, is electrox a clear finish?

also as I really wouldn't mind a different colour on it for now, are you saying an acrylic paint would be non-porous? is this what I should be looking for?

this is the yank tank in question:


Edited by Efbe on Wednesday 5th February 23:03

conkerman

3,513 posts

164 months

Thursday 6th February 2014
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Barcoat?

Talkwrench

910 posts

262 months

Thursday 6th February 2014
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Efbe said:
cheers, is electrox a clear finish?

also as I really wouldn't mind a different colour on it for now, are you saying an acrylic paint would be non-porous? is this what I should be looking for?

this is the yank tank in question:


Edited by Efbe on Wednesday 5th February 23:03
And very nice it is too!
Electrox is a purposeful grey and very easy to apply. It is also an etch primer so it sticks well.
Acrylic paints are not porous but more pointedly, satin acrylic is not porous, unlike some other satins. Go to a paint shop supplier and get some of the larger acrylic satin aerosols if you fancy that route. They usually sell them for wheels etc.
The only problem is if you try to apply the satin black to the car as it stands, the paint won't adhere very well.
Whereabouts in Yorkshire are you?

benjj

6,787 posts

192 months

Thursday 6th February 2014
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Efbe is in Halifax, Talkwrench is near Haworth.

I'll leave the rest to you two love birds wink

Efbe

Original Poster:

9,251 posts

195 months

Thursday 6th February 2014
quotequote all
Talkwrench said:
And very nice it is too!
Electrox is a purposeful grey and very easy to apply. It is also an etch primer so it sticks well.
Acrylic paints are not porous but more pointedly, satin acrylic is not porous, unlike some other satins. Go to a paint shop supplier and get some of the larger acrylic satin aerosols if you fancy that route. They usually sell them for wheels etc.
The only problem is if you try to apply the satin black to the car as it stands, the paint won't adhere very well.
Whereabouts in Yorkshire are you?
thanks a lot for that. I'll have a think about what I need to do, and try and work out the protection, cost, practicality and effort of both solutions.

As that matchmaker benjj says, we're not too far away. I sold a kayak to someone in haworth yesterday (to make room for the mustang), you wouldn't look a bit like Justin Lee Collins would you?

Talkwrench

910 posts

262 months

Friday 7th February 2014
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You're right. I wouldn't look like him.... at all!
Always loved Mustangs. I'd enjoy taking a look some time.

Efbe

Original Poster:

9,251 posts

195 months

Tuesday 11th February 2014
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Talkwrench said:
You're right. I wouldn't look like him.... at all!
Always loved Mustangs. I'd enjoy taking a look some time.
cheers TW

got a long way to go before I get to that bit. Though the engine runs perfectly, the car has been sitting in a garage for 15 years so have to refresh everything before running it properly.