Mezzanine offices and trade counters
Mezzanine glazing and balustrade panels above a warehouse floor are exactly the situation Approved Document M exists for — clear glass at head height with a workshop behind it. We mark those panels so they read against both the bright roof lights and the darker plant below, which usually means a denser frost band than a normal office would need.
Trade counters get the same treatment plus the practical items: opening hours on the entrance door, counter numbering, hi-vis and PPE notices at the workshop threshold, and a printed wall panel behind the counter that turns a plasterboard wall into a brand statement.

