Pitch, gutters (tagrender) and scaffolding (stillads) change a roof quote. A price per square metre that leaves the scaffolding out is incomplete, not cheaper. Roofing does not use the same Sikkerhedsstyrelsen authorisation as fixed electrical or plumbing work. Ask for the CVR number on the invoice.
Aarhus mixes apartments in the centre with houses in Højbjerg, Tilst and Viby J. The drive across Ringvejen, and access in older stairwells, is what usually separates two quotes. The same 2 businesses as the Danish page: Aarhus Tagrenovering ApS, Phønix Tag Århus A/S.