Primer for Black Jack

Greenman · Post by **Greenman** » Thu Aug 04, 2022 12:04 pm

Could anyone please advise a primer to use on outdoor masonry before applying Black Jack. I have had to fill some areas with Toupret masonry filler and on the pack it states not to apply solvent based paints direct to the filler.

aeromech3 · Post by **aeromech3** » Fri Aug 05, 2022 8:03 am

If you must use black jack which will keep moisture out but also lock any moisture in, not allowing masonry to breath then apply a Stabilising Solution first; only an example Everbuild 406 (cheap) and Wicks do one; watch for clear or whitte and of course make sure you choose a water based one.
I hope you used the exterior filler version Touprelith F.

Greenman · Post by **Greenman** » Sat Aug 06, 2022 7:43 am

Thank you for your reply, very much appreciated.