plasterman2
New Member
What are those small black tar like spots you get in new render and will they fade any ideas
iam building a pond with block its been sealed with pva and first coat of render with waterproofer added to sand and cement mix but noticed black spots appearing do i need to worry or not before top coat goes on. ?
:RpS_laugh:Is that where you trialed the waterproof phone............:RpS_confused: