Paint on inside of body panel

[Mike A Veal-175]

For painting use a plastic primer and you should be OK with any rattle can
over the top.

I have heard of people using underseal on the insides of fibreglass
wheelarches. It does stop cracking and stonechipping of the fibreglass,
crucial where a single piece of fibre glass provides the inside of the
wheel arch and the painted body. However, after a few years the underseal
can be seen on unpainted cars through the gel coat. Fibre glass is not
waterproof, and the underseal is obviously working into the material. What
this does to the structural integrity of the panel I wouldn't like to say.

If you want to be really safe, apply a layer of top coat gel to the
insides of the panel before treating them. Top coat is just gel coat, with
an added liquid wax, so that it will harden outside of the mould. Cornish
Fibreglass Supplies (CFS) should be able to furnish you with some mail
order. It's goopy stuff though and you may not be able to apply a thin
coat!

Hope that helps
Mike Veal








Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU







[Non-text portions of this message have been removed]

[bbird23uk]

Sorry for not replying sooner...Thanks for info, presumably I don't need to sand the inside within an inch of its life befiore using the plastic primer? I've also been advised to use an etch primer before a high build primer...fwiw I'll be using a compressor and air gun..Thanks, Steve
  ----- Original Message -----
  From: Mike A Veal
  To: bike-engined-cars@...
  Sent: Thursday, September 10, 2009 11:51 AM
  Subject: [bike-engined-cars] Paint on inside of body panel


    For painting use a plastic primer and you should be OK with any rattle can
  over the top.

  I have heard of people using underseal on the insides of fibreglass
  wheelarches. It does stop cracking and stonechipping of the fibreglass,
  crucial where a single piece of fibre glass provides the inside of the
  wheel arch and the painted body. However, after a few years the underseal
  can be seen on unpainted cars through the gel coat. Fibre glass is not
  waterproof, and the underseal is obviously working into the material. What
  this does to the structural integrity of the panel I wouldn't like to say.

  If you want to be really safe, apply a layer of top coat gel to the
  insides of the panel before treating them. Top coat is just gel coat, with
  an added liquid wax, so that it will harden outside of the mould. Cornish
  Fibreglass Supplies (CFS) should be able to furnish you with some mail
  order. It's goopy stuff though and you may not be able to apply a thin
  coat!

  Hope that helps
  Mike Veal

  Unless stated otherwise above:
  IBM United Kingdom Limited - Registered in England and Wales with number
  741598.
  Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU

  [Non-text portions of this message have been removed]



 

[Non-text portions of this message have been removed]