Crack in render filled with Toupret but that has now cracked - can I use Puraflex 40?

[DanH]

A couple of years ago I tried to sort a couple of vertical cracks in the external render. I made the cracks into a wider channel and filled it with Murex Toupret. The fix lasted for a while but I notice the Toupret has started to crack itself or where it meets the masonry. I've attached a picture of one of the cracks.

I am about to paint the exterior again so want to attempt to sort this out..again! I still have the Toupret available but wondering if another product is better? I've recently used quite a bit of Puraflex 40 to do some sealing and have historically had good results with it but never tried in masonry or to fill cracks like these. Any recommendations?

Thanks

Dan

 

[ree]

OP,
You show rusting metal angle bear on the window head - it needs replacing with a plastic Bell Cast.
All three cracks need raking or grinding out, and filling to match with a product of your choice.

 

[Londoner2]

You need a flexible filler, use toupret fibrefill filler,let it cure then refill then paint.

The toupret fibrefill is quite difficult to work with (cant be sanded and does sag so may need 2 applications) but best to use on the flat service and use your other preferred filler on the cornice.