Masonry, plasterboard and other surfaces need different fixing assessments. Share what is known about the wall and nearby services. Existing holes do not establish suitable support for a heavier object, and unknown construction can require further review before installation.
A picture arrangement benefits from an agreed layout before holes are made. Show the items together and mark the desired area in a room photo. Discuss spacing and alignment without assuming that a single-item quote includes an entire gallery wall.
List the weight and fittings for each picture or mirror separately. Similar dimensions can conceal very different loads. A combined request helps plan the visit, but every object still needs compatible support and its own agreed position and handling requirements.
The agreed service covers layout, hanging-system and substrate review, compatible fixings for assessed loads. Exclusions: Glass cutting, frameless glazing, conservation handling, oversized unsupported loads, electrical work.