Internal painting of Brick render walls

[nika]

Hi team,

I have brick-rendered internal walls which I will apply BondCrete to before I apply Dunlop rapidset repair mortar on it covering cracks and small holes. 

I will be painting the walls and I'm wondering what would be the best undercoat to use for brick render internal walls. Are there specific types of undercoat that need to be used for this? 

thanks

Nik

[JacobZ]

Hi @nika,

Thank you for your question about painting rendered internal walls.

Yes, some primers are much better for rendered surfaces.

Ensure you let your repair mortar cure for at least a week and preferably two before moving on.

After the week, brush the wall down with a soft-bristled brush or broom such as this All Set 270mm Indoor Broom. This will remove any dirt or loose powdery residue that can affect adhesion. 

I'd then suggest applying a coat of Dulux PRECISION Sealer Binder. It's an oil-based prep coat that seals porous surfaces and binds unpainted powdery surfaces like mortar or render. 

I'd then recommend any of the Dulux Wash and Wear range as your paint over the top.

Let me know if you have any further questions.

Jacob 

[nika]

Hi Jacob

Thanks for the reply.

I will be using Taubmans easy coat as the top coat which is water based.  Can I still apply the Dulux PRECISION Sealer Binder as the undercoat being oil base? 

thanks

Nik

[JacobZ]

Hi @nika,

You shouldn't have any issues.

Water-based paints adhere well to oil-based primers as long as the primer is fully cured before application.

Dulux PRECISION Sealer Binder should be left for a minimum of 16 hours to cure before painting over the top.

Let me know if you have any further questions.

Jacob