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What is underneath the paint on the floor?

Posted: Wed Jan 15, 2014 8:20 pm
by TFM150K
Underneath the paint on the floor of my car and van is what appears to be a black undercoat material which gives the paint a lumpy characteristic. Despite having been there since 1968/1972 it is still pliable - it can be scraped off using a fingernail.
Has anybody got any idea what it is? (Those that know me need not worry - I am not going in for conkers - I am just trying to make a patched bit look roughly the same as the rest of the floor). Any ideas before I am tempted to use an underbody paint? Ta
:-?

Re: What is underneath the paint on the floor?

Posted: Wed Jan 15, 2014 8:46 pm
by POMMReg
Bitumastic

Is it blk or yellow gloss? :o

Re: What is underneath the paint on the floor?

Posted: Wed Jan 15, 2014 8:57 pm
by TFM150K
Matt Blk (under trafalgar blue in the case of the sloon and BS256 in the case of the van - give or take a BS or two cos the inside was done with free paint from a previous job - BS255 1/2 maybe)?

Re: What is underneath the paint on the floor?

Posted: Wed Jan 15, 2014 9:18 pm
by POMMReg
TFM150K wrote:Matt Blk (under trafalgar blue in the case of the sloon and BS256 in the case of the van - give or take a BS or two cos the inside was done with free paint from a previous job - BS255 1/2 maybe)?
Would you believe red PO vans were BS539 underneath.

What's a "sloon", I've heard of a sloop....but these are seagoing.

John.B.

Re: What is underneath the paint on the floor?

Posted: Wed Jan 15, 2014 11:53 pm
by bmcecosse
:roll: :lol:

Re: What is underneath the paint on the floor?

Posted: Thu Jan 16, 2014 12:44 pm
by TFM150K
a
:oops:
arthritic fingers! Please position 'a' to remedy!

Re: What is underneath the paint on the floor?

Posted: Thu Jan 16, 2014 1:47 pm
by POMMReg
TFM150K wrote:a
:oops:
arthritic fingers! Please position 'a' to remedy!
What's a "sloona"? Do you mean a schooner - you collect ships as well?

Jack Tar

Re: What is underneath the paint on the floor?

Posted: Fri Jan 17, 2014 9:06 pm
by TFM150K
Oh, dear, what have I started?
:roll:
Getting round to the serious bit, has anyone used bitumastic and painted over the top of it - was it successful? I am a bit wary of leaving a permanently sticky surface.
:-?

Re: What is underneath the paint on the floor?

Posted: Fri Jan 17, 2014 11:15 pm
by stag36587
TFM150K wrote:Oh, dear, what have I started?
:roll:
Getting round to the serious bit, has anyone used bitumastic and painted over the top of it - was it successful? I am a bit wary of leaving a permanently sticky surface.
:-?
I would be too - if all the grit and small stones stick then your unladen weight will increase significantly :)

Re: What is underneath the paint on the floor?

Posted: Fri Jan 17, 2014 11:49 pm
by POMMReg
It hardens, doesn't remain sticky.

Re: What is underneath the paint on the floor?

Posted: Mon Feb 03, 2014 10:31 pm
by TFM150K
Sorry to be a nuisance but I've just googled 'bitumastic' and theyve got a range of products - anyone able to be specific please?
:-?

Re: What is underneath the paint on the floor?

Posted: Tue Feb 04, 2014 11:41 pm
by taupe
hi

The original material would have been hot melt bitumen .. applied with a bitumen brush which gave the bobbly/textured finish

If you use a normal bitumen paint it will take some time to dry fully (probably weeks or months)as will a spray underseal such as Tetroseal.

You can buy stick on bitumen sound proofing sheets or use a modern shutz type finish.

Taupe

Re: What is underneath the paint on the floor?

Posted: Wed Feb 05, 2014 2:07 pm
by les
If you want to recreate the original 'lumpy' characteristic, use stone chip paint from a spray can. I have done this and the match is spot on. Once dry overspray with body colour. Of course I'm presuming all stone chip paint is similar to the brand I used.

Re: What is underneath the paint on the floor?

Posted: Thu Feb 06, 2014 9:09 am
by TFM150K
Go on, Les, tell me what you used......
:wink:

Re: What is underneath the paint on the floor?

Posted: Thu Feb 06, 2014 11:04 am
by les
I wasn't being secretive, I just can't recall! I'll have a look in the shed, the can may be hiding in there, will get back. :D

Re: What is underneath the paint on the floor?

Posted: Thu Feb 06, 2014 7:45 pm
by les
On the tin it says----Hammerite Stone Chip Shield.

Re: What is underneath the paint on the floor?

Posted: Fri Feb 07, 2014 4:31 pm
by TFM150K
Now we have established it is Finnegans I have been down the workshop and, lo and behold, there was a part used tin. If there is still some puff in it the job will be a freebie! Fingers crossed! Ta, Les.
:wink:

Re: What is underneath the paint on the floor?

Posted: Fri Feb 07, 2014 9:27 pm
by les
Let us know how it goes. :D I was well pleased.