I really can't fault the workmanship or service received from Apex.
I own a flat in a tenement (6 in the block) in the centre of Aberdeen and received an advisory notice form Aberdeen City Council on roof repairs (I believe everyone in the street got one). We had also experienced water ingress and therefore needed to get the work done.
We received 3 quotes and Apex were considerably cheaper due to the fact this work could be done via rope access.
Start date was re-scheduled a few times due to adverse weather but I cannot mark Apex down for this as they kept in touch to let us know. On completion, they left the building tidy and honoured the original quote despite attending to some additional work.
All in all we were very satisfied with the work undertaken, I have already recommended them to colleagues and would recommend them to anyone looking for a reliable slater