Masonary paint advice

We need to paint our house again. The paint has never taken very well to the walls.

It bubbles up and flakes off after a year or two. In places there is fungus growing.

The following advise has been recommended to us.

1) Scrape off as much paint as possible with a scraper and wire brush.
2) Apply a coat of Sandtex Stabilising Solution.
3) Paint using Dulux Weathershield Smooth Masonry Paint.

Is there a good fungus remover that we could use between step 1 and 2 above?

Nos. 1 and 2 are probably fine - but I would very definitely recommend the Colortrend brand for paint. By far and away the best paint I've ever used inside and out.

Thanks Thirsty. I gave them a call.

Bleach will kill fungus.