Roof covering by making use of flat or curved slabs or stiff sheets

EFIXED CONSTRUCTIONS E04Building E04DROOF COVERINGS SKY-LIGHTS GUTTERS ROOF-WORKING TOOLS

E04D3/00Roof covering by making use of flat or curved slabs or stiff sheets

E04D3/02of plane slabs, slates, or sheets, or in which the cross-section is unimportant E04D3/04of concrete or ceramics E04D3/06of glass or other translucent material Fixing means therefor E04D3/08with metal glazing bars E04D3/14with glazing bars of other material E04D3/16of metal E04D3/18of specified materials, or of combinations of materials, not covered by any of groups E04D3/04, E04D3/06 or E04D3/16 E04D3/24with special cross-section E04D3/26of concrete or ceramics E04D3/28of glass or other translucent material E04D3/30of metal E04D3/32of plastics, fibrous materials, or asbestos cement E04D3/34of specified materials, or of combinations of materials, not covered by any one of groups E04D3/26 - E04D3/32 E04D3/35Roofing slabs or stiff sheets comprising two or more layers E04D3/351at least one of the layers being composed of insulating material E04D3/352at least one insulating layer being located between non-insulating layers E04D3/354more than one of the layers being composed of insulating material E04D3/355the insulating layers of adjacent slabs having cooperating edges E04D3/357comprising hollow cavities E04D3/358with at least one of the layers being offset with respect to another layer E04D3/36Connecting Fastening E04D3/3601of roof covering supported by the roof structure with interposition of a insulating layer E04D3/3602The fastening means comprising elongated profiles installed in or on the insulation layer E04D3/3603the fastening means being screws or nails E04D3/3605of roof covering supported directly by the roof structure E04D3/3606the fastening means being screws or nails E04D3/3607the fastening means comprising spacer means adapted to the shape of the profiled roof covering E04D3/3608for double roof covering or overroofing E04D3/361by specially-profiled marginal portions of the slabs or sheets E04D3/362by locking the edge of one slab or sheet within theprofiled marginal portion of the adjacent slab or sheet E04D3/363with snap action E04D3/364by folding of the edges E04D3/365by simple overlapping of the marginal portions with use of separate connecting elements E04D3/366by closing the space between the slabs or sheets by gutters, bulges, or bridging elements E04D3/368by forcing together the marginal portions of adjacent slabs or sheets E04D3/369by welding of the marginal portions of adjacent slabs or sheets also by soldering, glueing E04D3/38Devices for sealing spaces or joints between roof-covering elements E04D3/40Slabs or sheets locally modified for auxiliary purposes E04D3/405Wall copings