Waterproof paint for Render, or secondary water sealing?

[keelbolt]

I have a cottage that was rendered c. 1970 and the render was first painted in 1999. I am now beginning to see some damp penetration of the render, so am planning to repair any cracks and then repaint the property. I am not sure whether to use a waterproofing after repainting (Such as Cementone Water Seal), or whether I can find an exterior paint that will both paint and waterproof at the same time.

Can anyone offer me any advice, please?

 

[Chri5]

I'd suggest

http://www.duluxtradepaintexpert.co.uk/web/pdf/datasheets/522.pdf

 

[r896neo]

A quality water masonary paint will be pretty good but the next spec up would be to use a solvent based one like pliolite. Its more flexible and more resistant to water.

You've guessed it though.... its also more expensive.