2k high build primer

2k High build primer is porous

You can 'fill' over it but obviously ideally you want the majority of your filler work to be done prior to this. The technical data sheet for your paint will tell you what products you need for undercoating (and over coating) most 2k primers wont adhere straight to bare metal and will require an etch/epoxy primer first.

With your last question are you thinking 'what should i put over that' as in while the car is waiting for the rest of any work to be finished? If youre storing in a dry workshop it will be fine, if its getting wet then you'll need to over coat with a non porous product

Hope this helps?! Theres a million and one different answers and opinions when it comes to paint but the safest bet is always to find the manufacturers technical data sheet online and follow that

oh ok, i thought the 2k high build would have been water proof!

what do i do then, the car is in high build in places, I'm going to have to strip the paint off of it all again, and re do it all. ive used high build out of a can, and the paint it just pealing off.

the garage is dry, and it does kinda blow threw it some with the doors not being the best.

if i keep on with the high build for now?

i don't know how long the process will take, but ive done the roof, and rear , going to fit 2 new quarters to it again!! and then get it all filled again. ive a lot quicker process as ive learned to fill fairly well i think now.

thanks for the advice!

oh so what i mean is , ive been doing the body for ages, ive had it in 2k epoxy at first, then filled it, then primed it again. then flatted it again all over a long time. but where i may have gone threw , i used can high build, and on the front that was in lots of places.

where i have used the can high build the 2k paint i have put over has just pealed off.


so now, ive refilled the roof on bare steal, one side i thought i was using 2k high build but it was epoxy 2k, and the other side ive used 2l high build. on the back ive filled that and just gone over with high build.


the products ive used are hp body 534 high build and hp body 989 epoxy.


also the epoxy when i ve used it ive thinned it with 2k thinners 10%, and it still comes out really orange peal.

I just looked up that epoxy, it requires the 775 epoxy thinners and at 25% with a 1.5 or 1.8 tip.

Primer is always porous. Only Epoxy Primers and Top Coat paint aren't. Hence, never wet flat anything that isn't either finished in epoxy or a 2k gloss "test" coat.

I assume you mean HB Body, which is a reasonable brand.

I hope you are not applying filler to bare steel though....!

I believe a lot of filler is porous, so if there's a way for it to get wet, the moisture can sit under it.