The cure it resin it self is a great produced following all the manufactures guide lines especially on use by dates and the guarantee is honoured, by roofer etc. but this produce was being sold as New, but it was not it was 12 months past its sell by date , which becomes a problem if you want thought’s guarantees. So I think the description need to be adjusted to suit product , but I would say the seller was a very good communicator and responded very quickly to request for refund