My out building has a concrete roof with a large crack. It looks like its been that way for a while. The prevous owner has stuck some felt over the crack (only the crack) but its far from water tight. Im intending on re felting the entire roof but would like to know what i should fill the crack with? I thought to shutter off the crack from underneath so I can wet pour something but have no idea what or even if thats the right technique!
Adivce greatly received.
Adivce greatly received.