Abstract: The construction set for a construction project, in particular winter gardens, canopies or awnings for entryways or windows, has a basic profile (1) usable as a support, purlin, crossbeam, lateral roof profile and wall attachment profile, having two intrinsically thermally separate cross-sectional segments (18, 19) and fastening grooves 4, 5 or undercut cross section located on the inside and receiving chambers (2, 3) located on the inside. Support, stop and sealing profiles (6, 7, 27, 8) and connectors are detachably insertable into the fastening grooves (4, 5), the receiving chambers (2, 3), and outsides of basic profiles, which with the basic profile (1) form a framework for a fixed support and abutment of roof and wall elements, preferably panes of glass or plastic panels.