Matting semi-gloss paint

[bluedragon]

Using Blakes deck paint to cover some bolt holes that I've filled, but although it's supposed to be semi-matt, it's still a bit too glossy for the surrounding deck. What's the best way of making this matt? I've tried some fine wet&dry paper after drying, but some additive or something like silica or talcum powder sprinkled onto the wet coating would be preferable. Ideas?

 

[Chrusty1]

Don't Blakes do a matting agent?

 

[bluedragon]

Well they do anti-slip granules, but I don't think that would necessarily make the finish matt...unless anyone knows differently?

 

[psmonarch]

International do a matting agent, got a tin of it but never got around to using it. Make us an offer and we'll post a small pot out to you if you fancy.