1. roofing(n = noun.artifact) - material used to construct a roof;
is a kind of material
2. roofing(n = noun.act) - the craft of a roofer;
is a kind of craft, trade
is a part of building, construction
has particulars: slating
Derived form verb roof1
1. The act of covering with a roof. [1913 Webster]
2. The materials of which a roof is composed; materials for a roof. Gwilt. [1913 Webster]
3. Hence, the roof itself; figuratively, shelter. Southey. [1913 Webster]
4. The wedging, as of a horse or car, against the top of an underground passage. Raymond. [1913 Webster]
roofing, n.
1 material for constructing a roof.
2 the process of constructing a roof or roofs.