Let my Primer Dry Out

[tododo]

Hi all

Ive made a mistake in priming no more ply cement boards to make them more water resistant out doors

Problem is II perimed them fine but Ive let them dry out - didnt realise you prime just before tiling - muppet

Would sanding down and roughing up the surface and doing again before tililing be OK do you think

Thanks

 

[Jurassicspark]

Just use some medium grit sandpaper (around 120-150 grit) to scuff the surface, but don't remove the primer completely just enough to create a bit of texture.

After sanding, I recommend applying a fresh layer of primer before you start tiling.

Once the primer is dry, you can go ahead with your tiling.

 

[ree]

OP,
No need for doing anything, your "cement boards" are good to go - just start tiling.
Use an external, cementitious, bagged powder adhesive - comb the boards and butter the back of the tile.