Hi, we are getting an old stone shed rerendered with nhl 3.5, the man doing it has 2 coats on but cannot now finish the job due to sudden illness (& is not now likely to recover v soon). Hopefully we can get someone else quick but is there a time limit on how long the base costs can be left before the finish coat is applied. It’s already been 3 weeks. Or will we need to hack off & start over?
Tia
Justine Changed status to publish August 10, 2020
Thanks for getting in touch. There’s no timescale – it’s fine to leave as long as you like really. However, if it is left for a significant time you may need to clean it down before applying the next coat.
Justine Changed status to publish August 10, 2020