How to fill upvc holes?

[OM2]

I need to fit new window handles.
The old handles holes, only 2 alone up.
I'll have to drill 2 new holes.

For the 2 other holes...
How do I fill up?

I don't think I need to fill up. Will be OK.
But... I thought there would be some plastic filler for this purpose?
I've seen a few YouTube videos and can't see a solution. I've searched ebay and don't see anyone selling anything that can be used.

The YouTube guy cut out a square. Added pvc inside and then cut an exact measure to fill the square.
1. Where does one get pvc plastic from?
2. He uses special glue. Where do I get that from?

Thanks.

 

[diy_fun_uk]

I'm assuming the holes are on the inside. Will they be hidden by the new handle? If not, you can simply use something like this to fill the old screw holes

No Nonsense Anti-Crack Acrylic White 310ml

Order online at Screwfix.com. A high quality paintable acrylic sealant. For sealing and filling gaps and cracks where movement can occur. Use prior to painting or papering to prevent unsightly cracks developing later. Good adhesion to concrete, brickwork, plaster, painted wood, anodised...

www.screwfix.com

 

[just pumps]

Gel coat, either ready mixed or two pack.

 

[OM2]

Thanks for the replies guys.
'NO NONSENSE ANTI-CRACK ACRYLIC WHITE 310ML' - is perfect.
Any tips on keeping dry and still OK to use a long time after using the tube?
£2.69 - can't complain. But still hate wasting and would rather save the environment by not purchasing more.
The current method I use is to add vaseline and close the tip with tape or something.

@JustAnotherJane Can you show me what a gel coat is? And where to buy from?
Thanks.

 

[Lower]

I've used that screwfix stuff over the weekend on some UPVC window trims and white external silicone blends in much better.

 

[diy_fun_uk]

Thanks for the replies guys.
'NO NONSENSE ANTI-CRACK ACRYLIC WHITE 310ML' - is perfect.
Any tips on keeping dry and still OK to use a long time after using the tube?
£2.69 - can't complain. But still hate wasting and would rather save the environment by not purchasing more.
The current method I use is to add vaseline and close the tip with tape or something.

@JustAnotherJane Can you show me what a gel coat is? And where to buy from?
Thanks.

It'll harden in the tube eventually and need thrown out, not much you can do about that. If you're not going to use much and are concerned re waste, you could buy a smaller tube of white silicon sealant e.g. 70ml and it'll do the trick.

 

[OM2]

It'll harden in the tube eventually and need thrown out, not much you can do about that. If you're not going to use much and are concerned re waste, you could buy a smaller tube of white silicon sealant e.g. 70ml and it'll do the trick.

Dumb thing is 70ml will probably cost more!

EDIT: the screwfix is the cheapest
I searched around