Filling small holes in fibreglass

[Chiveroni]

Hi all

I'm just in the process of removing all emblems and rear number plate to enable me to properly work on the paint - I'll start another thread with all pictures, etc. once I've finished. Taking the number plate off I can see that someone in the past has screwed directly through the fibreglass on the boot lid - 8 holes in total (I guess they screwed some kind of mount onto the car). This probably explains why the boot gets damp!

Any suggestions as to what is best to use to fill the holes? They are not so big - maybe ca. 3mm - and will be invisible once I've remounted the plate. I was thinking some standard body filler but as it's fibreglass thought I'd better check with the experts.

 

[Scaf]

Is the boot fibreglass, I somehow thought they would be a more modern composite material?

 

[CatmanV2]

I thought it was metal!

C

 

[Zep]

I guess the question is what you are looking to achieve. If you aren’t worried about aesthetics, something like tiger seal. If you are and want to paint it, filler and then paint.

 

[Chiveroni]

It's definitely fibreglass or something very similar. The paint behind the number plate is a right mess - there have been a number of license plates stuck to the paint using various grades of industrial adhesive tape The clear coat has lifted / paint impacted so, at some stage it's going to need to be repainted. But right now all I want to do is fill the 12 holes (12! for a freakin' license plate!!!!!!!!) to stop the damp getting into the boot. It doesn't need to be perfect - I just want to ensure I don't fill the holes with anything that's going to make the whole mess even worse! It'll all be hidden behind the license plate anyway and eventually get sorted out professionally and re-sprayed.

I've attached three pictures of what it looked like when 1) I first took the license plate off, 2) after I removed all the tape and 3) after it went through a full compound / polish / wax using a polishing machine. The paint on the car looks beautiful now (apart from where the license plate was!!!). Could have taken it a step further but as this is my first time doing this I didn't want to take the clear coat back too much. Can recommend "paint correction" to anyone.

 

[Oneball]

I’d guess it’s a plastic composite much like the front of an Alfa 916 or BMW front wings.

 

[Zep]

They didn’t want that falling off did they? I’d go tiger seal if it’s just sealing off you want.

 

[Scaf]

^^^^^ this ^^^^^

 

[Ewan]

For a waterproof seal, use a two-pack marine grade epoxy that’s designed for use below the waterline on boats. Not a basic car body filler.
The one we stock/use/supply is from Hempel and is simply called Epoxy Filler. From memory, about £17 for the small kit.

 

[Chiveroni]

Thx for the feedback everyone!