Good morning,
Thank you for your question.
Stormdry® MAX Enhanced Waterproofing Barrier is a clear gel coating providing lasting waterproofing, crack-bridging and anti-graffiti protection. It can be used on masonry, stone, concrete, selected metals and painted surfaces - this includes roughcast render.
Stormdry® MAX bridges cracks up to 0.6 mm wide, any defects larger than this should be suitably filled and left to cure before Stormdry® MAX is used.
I hope this helps and if you have any further questions, please feel free to call us on 01403 210204.
Kind regards,
Teigan
Safeguard Europe Ltd.
01403210204.
I have a house with roughcast external walls painted several years ago with Sandtex ultra-smooth masonry paint. One area has some hairline cracks in the render and there is water ingress. Is Stormdry MAX Enhanced Waterproofing Barrier suitable for use on this type of painted surface?