Roof coverings including any similar kind of watertight covering against rain, snow, hail, or the like for other parts of buildings; sky-lights for flat or sloped roofs; roof drainage and gutters; roof-working tools

Small roof covering elements, like grooved or vaulted tiles, slates, shingles (E04D 1/02 - E04D 1/22); Special small roof covering elements characterized by their structure or their purpose (E04D 1/24 - E04D 1/30); Fastenings for small roof covering elements and devices for sealing the spaces between small roof covering elements (E04D 1/34 - E04D 1/365).

Use E04D 1/00 - E04D 1/36 to classify the additional non-inventive aspects

Small grooved or vaulted roof covering elements, like Spanish, Roman or Barrel tiles

Classify in E04D 1/04 - E04D 1/10 if the materials of the roofing elements are specified and in E04D 1/02 if they are not.

Classify according to the composition of the roofing elements and their geometry

Small roof covering elements having a flat outer surface, like plain tiles, shingles or slates

Classify in E04D 1/14 - E04D 1/22 if the materials of the roofing elements are specified and in E04D 1/12 if they are not.

Classify according to the composition of the roofing elements and their geometry.

Small roof covering elements having internal cavities in the thickness of the roof covering elements, e.g. hollow tiles

Roofing elements comprising two or more layers, the layers having a thickness and not being simple coating layers

Means for connecting or fastening adjacent roofing elements, with the additional purpose of forming a space in between said roofing elements.

Special small roof covering elements, characterized by their special purpose, like ridge tiles, turfing tiles, gutter tiles, gable tiles, ventilation tiles, special tiles allowing walking on the roof

Reference E04D 3/40 is non-limiting in the subgroup E04D 1/30. CPC will be updated/corrected once this inconsistency is resolved.

Strips fastening the roof-covering elements to an underlying support element, with the additional purpose of covering the gap between roof covering elements.

Devices for sealing the spaces or joints between small roof covering elements, like sealing-strips

Use E04D 3/00 - E04D 3/405 to classify additional information

Roofing elements consisting of plane slabs, slates, or sheets not having ribs, corrugations or profiles protruding neither from the plane nor from the margins of the roofing element.

Classify in E04D 3/04 - E04D 3/18 if the materials of the roofing elements are specified and in E04D 3/02 if they are not.

Roof covering for buildings by making use of plane slabs or sheets of glass or other translucent material.

Fixing means specially adapted therefor.

Classify in E04D 3/08 - E04D 3/14 if glazing bars are included. Classify in E04D 3/06 either if glazing bars are not included, or if the plane slabs or sheets of glass or other translucent material have some special technical features.

Classify also in E04D 3/06 the plane multi-walled plastic roof-panels, even if only implicitly transparent or translucent, e.g. made of a plastic that is known for being transparent.

Roofing elements consisting of curved slabs or stiff sheets or of plane slabs or stiff sheets having ribs, corrugations, flanges or profiles protruding from the surface or the margins of the roofing element.

Classify in E04D 3/26 - E04D 3/34 if the materials of the roofing elements are specified and in E04D 3/24 if they are not.

Roof covering for buildings by making use of curved slabs or sheets or of plane slabs or sheets having ribs, corrugations, etc., the slabs or sheets being made of glass or other translucent material.

When glazing bars are present classify also in E04D 3/08 - E04D 3/14

If the special technical features disclose only how the metal roofing elements are connected between themselves or in how they are fastened to the underlying roof structure, then classify only in E04D 3/36 or in its sub-groups.

Waterproof roofing slabs or stiff sheets either flat or corrugated comprising two or more layers, e.g. for insulation, and used as roof covering.

Self-supporting multi-layered roof slabs, also used as roof coverings are classified both in E04B 7/20 - E04B 7/24 and in E04D 3/35 or its sub-groups.

Connecting, in the sense of connecting means to connect adjacent roofing slabs or stiff sheets together along their margins, directly or indirectly, e.g. through a bridging element.

Fastening, in the sense of fastening means to fasten roofing slabs or stiff sheets to the underlying roof structure.

Fastening means of roofing slabs or stiff sheets, in their fields, to the underlying roof structure are classified in groups E04D 3/3601 - E04D 3/3608.

Fastening means of the borders of roofing slabs or stiff sheets to the underlying roof structure are classified in groups E04D 3/361 - E04D 3/369.

Connecting means between adjacent roofing slabs or stiff sheets are classified in groups E04D 3/361 - E04D 3/369.

In groups E04D 3/361 - E04D 3/368, additional small fastening elements, e.g. nails, screws, are not considered as separate connecting elements.

Fastening means for a profiled roof-covering, comprising spacer means in between the roof covering and the underlying roof structure, the spacer means being adapted to the shape of the profiled roof covering.

Connecting adjacent roofing slabs or stiff sheets together by specially-profiled marginal portions of the slabs or sheets, e.g. standing seams, optionally with additional fastening of the border of the slabs or sheets to the underlying roof structure.

Use E04D 3/36 - E04D 3/369 to classify additional information.

For multi-layered roofing slabs classify according to the marginal portions of the upper roofing layer of the roofing slabs.

Connections of opaque roofing slabs, by specially profiled marginal portions of the slabs, and in the thickness of the slab, should also be classified in E04D 2003/3617; connections of glass, transparent or translucent roofing slabs, by specially profiled marginal portions of the slabs, should be classified in E04D 2003/285.

Connecting adjacent roofing slabs or stiff sheets together by specially-profiled marginal portions of the slabs or sheets and by locking the specially-profiled marginal portion of one slab or sheet within the profiled marginal portion of the adjacent slab or sheet, with or without separate connecting means.

Additional small fastening elements, e.g. nails, screws, are not considered to be separate connecting elements.

When it is explicit that there is a snap action, E04D 3/363 takes precedence

Connecting adjacent roofing slabs or stiff sheets together by specially-profiled marginal portions of the slabs or sheets with snap action, the snap action occurring directly between the two adjacent specially-profiled marginal portions or between at least one specially-profiled marginal portion and a fastening element to the underlying roof structure.

Connecting means between adjacent roofing slabs or sheets in which there is only a snap action between the slabs or sheets and a bridging element, and not directly between the marginal portions of the slabs or sheets or between said marginal portions and a fastening element to the underlying roof structure, are classified in E04D 3/366.

Connecting adjacent roofing slabs or stiff sheets together by specially-profiled marginal portions of the slabs or sheets, by folding of the edges of the roofing slabs or stiff sheets, e.g. rolled seams, after the roofing slabs or stiff sheets have been mounted on the roof.

Connecting of adjacent roofing slabs or stiff sheets by simple overlapping of the marginal portions, with or without the use of separate connecting elements, e.g. roof-tile like connections and connections allowing movement in a direction perpendicular to the joint.

Additional small fastening elements, e.g. nails, screws, are not considered to be separate connecting elements.

For multi-layered roofing slabs classify according to the features of the marginal portions of the upper roofing layer.

Connecting of adjacent roofing slabs or stiff sheets by closing the space between the slabs or sheets by structural or non-structural gutters, bulges, or bridging elements, not forcing together the marginal portions of the slabs or sheets, e.g. by caps protecting the connection against the weather, by bridging elements having also a structural function, by non-structural strip like bridging elements inserted into grooves in the thickness of the roofing slabs, by gutters draining the water at the joint between the slabs.

Connections between adjacent roofing slabs or sheets not presenting a gap between the slabs or sheets are also classified in E04D 3/366, provided there is a bridging element, e.g. cap, gutter, strip.

Connections between adjacent roofing slabs or sheets through a bridging element exerting a snap action are also classified here.

Roofs having rafters or supporting elements which also perform the function of bridging elements between the roofing slabs should also be classified in this group.

Connecting adjacent roofing slab or sheets by forcing together, e.g. crimping or clamping, the marginal portions of the adjacent slabs or sheets.

Roof covering by making use of flexible material of substantial dimensions, like flexible membranes, flexible sheets, flexible foils supplied in roll form

Use E04D 5/00 - E04D 5/149 to classify the additional information

Roof covering by making use of flexible materials impregnated with sealing substances, e.g. roofing felt impregnated with asphalt or bitumen

Roof covering by making use of flexible metal foils. like flexible metal foils supplied in roll form

Roof covering by making use of flexible sheets, membranes or foils of plastics, like plastic sheets supplied in roll form

Asphalt or bitumen are not considered plastics in E04D 5/06

Roof covering by making use of flexible foils, sheets or membranes consisting of materials not covered by groups E04D 5/02 - E04D 5/06

Roof covering by making use of flexible foils. sheets or membranes consisting of compounded or laminated materials, e.g. flexible metal foils or plastic films coated with bitumen

Flexible roofing materials impregnated with sealing substances, e.g. roofing felt impregnated with asphalt or bitumen, are not considered compounded or laminated materials in E04D 5/10, and are classified in E04D 5/02

Roof covering by making use of specially modified flexible foils. sheets or membranes, like flexible foils, sheets or membranes having features that are not continuous in both length and/or width directions, e.g. perforated membranes, or having a surface that is not smooth, e.g. a granulated surface, or having attached pads

Fastening means for roof coverings comprising flexible materials

Mechanical fastening means for flexible roof covering material, like nails, screws, discs, clips, strips perforating or not the flexible material

Fastening of flexible roof covering material by making use of glue or adhesive

Fastening of flexible roof covering material by welding

Roof coverings where the roof covering layer is formed by sealing masses, e.g. asphalt, bitumen, applied in situ;

Gravelling of roofs by applying loss gravel or granules in situ

Gravelling of roofs by applying loose gravel or granules in situ, as an outer protection of the roof covering

Use E04D 11/00 - E04D 11/02 to classify additional information

Supports, e.g. height-adjustable spacers, for load-supporting roof coverings on roofs, e.g. for elevated terrace floors on flat roofs.

Documents having tiles resting directly on the flat roofing surface without separate supports or spacers between the roofing surface and the tiles, e.g. normal terrace floors on flat roofs, should be classified in E04D 11/00.

Roof covering consisting of only one layer of flexible material should be classified in E04D 5/00 - E04D 5/149.

Documents having tiles resting directly on the flat roofing surface without separate supports or spacers between the roofing surface and the tiles, e.g. normal terrace floors on flat roofs, should be classified in E04D 11/00

Non-structural boards which support battens and/or roofing materials should be classified in E04D 12/00.

If the roof battens or roof purlins, as such, have some relevant special feature, then always give a class in E04D 12/004.

Use E04D 12/00 - E04D 12/008 to classify additional information.

Sheets of flexible material, both water/vapour permeable or not, used as roof underlay and not as roof covering

Battens for supporting roof covering elements as defined in groups E04D 1/00 - E04D 3/40, i.e. small roof covering elements, roofing slabs or stiff sheets.

If the roof battens or roof purlins, as such, have some relevant special features, then always give a class in E04D 12/004

Batten-supporting means located between the roof structure, e.g. rafters, and the battens

Specially adapted brackets to support the ridge-batten

Provisions against atmospheric, e.g. wind vortex suppression, vegetal or animal influences on roofs (E04D 13/002 - E04D 13/008); Sky-lights, domes and roof covering aspects thereof (E04D 13/02 - E04D 13/0358); Roof drainage, roof gutters, down pipes (E04D 13/04 - E04D 13/08); Special devices or arrangements for roofs, e.g. snow-traps, junctions of roof sheathings to chimneys, roof trimming strips, roof edge strips, fascias (E04D 13/14 - E04D 13/1585); Insulating devices for the roof covering (E04D 13/16 - E04D 13/1693); Ventilation of roof coverings (E04D 13/17 - E04D 13/178)

References E04D 1/30 and E04D 3/40 are non-limiting in the subgroup E04D 13/00. CPC will be updated/corrected once this inconsistency is resolved.

Sealing between the structure of dormer windows and the roof covering

Roof sky-lights of flat, domed or vaulted shape, their structures, their mechanisms, their connecting means to the roof structure, their ventilating means, their safety means and other means or accessories therefor

Sky-lights or domes having a frame mainly installed in the plane of a sloping roof.

Sky-lights or domes having a curb frame installed either on a sloping roof or on a flat roof

Supports or connecting means for all kinds of elongated sky-lights, i.e. comprising sky-lights of vaulted shape, but also saddle-roof like elongated sky-lights

Sky-lights or domes having movable parts for opening and/or closing, e.g. for ventilation or for preventing the spread of fire

Drainage in or on the field of the roof, drainage fittings in flat roofs, balconies or the like (E04D 13/04 - E04D 13/0481) .

Roof gutters, down pipes and accessories therefor (E04D 13/064 - E04D 13/08)

Drainage devices located in or on the roof surface or its perimeter for receiving water from the roof surface before it reaches the ground, the devices having limited extension and being only located at specific locations in or on the roof surface or its perimeter, e.g. roof gullies

Gutters in or on the roof surface for draining water, e.g. inclined valley gutters

Drainage layers under the outer surface of the roof, e.g. drainage layer under the tiles of a terrazzo style flat roof

Roof gutters around the borders of sloping roofs

Supports connecting gutter to roof

Devices for mechanically removing snow from gutters are classified in E04D 13/076

De-icing devices and snow melters for gutters

Cleaning tools for roof gutters

Down pipes for roof gutters, and clamping means therefor

Snow melters and de-icing devices on the roof surface

Permanent installation on flat and inclined roofs allowing walking

Junctions of roof sheathings to chimneys or other parts extending above the roof provided with ventilating means

Junctions of roof sheathings to chimneys or other parts extending above an inclined roof, the junctions being specially adapted for inclined roofs

Deformable junction strips which are shaped in situ should be classified here, e.g. junction strips made of a deformable material

Preformed junctions specially adapted for inclined roofs and to the cross-section of the parts extending above the inclined roof

Classify also in E04D 13/1478 when the part extending above the roof has walls, e.g. walls of a chimney made of bricks

Trimming strips for roofs, roof edge strips, elements for covering the overhang at the eave side, e.g. soffits, or the verge of saddle roofs, roof fascias

If drainage aspects are present, e.g. weeping holes, classify also in E04D 13/0459, E04D 13/0459

Edge strips or fascias retaining the roof sheathing

Fascia boards and soffits coverings are classified in E04D 13/158

Insulation of the roof covering integrated in the roof covering structure, e.g. the insulation being positioned above, between or below the roof purlins; insulation for roofs made of corrugated sheets; insulation applied above the roof covering, e.g. inverted roofs; insulation of pre-existing roofs; insulation of roof coverings, the insulation having provisions for roof drainage.

Roof insulating arrangements in which the insulating material is fixed between the roof covering and the upper surface of the roof purlins or rafters, with or without special fixing means

Roof insulating arrangements in which the insulating material is supported between the roof purlins or rafters, with or without special fixing means

Roof insulating arrangements in which the insulating material is supported between the roof purlins or rafters, by means deriving from the nature or the shape of the insulating material itself, e.g. expanding insulation.

Roof insulating arrangements in which the insulating material is supported by load bearing corrugated sheets, e.g. profiled sheet metal roofs

Insulation for roof coverings comprising a double skin, i.e. two superposed water tight layers

Inverted roofs or exteriorly insulated roofs, e.g. in which the insulation is exposed to the weather

Roof insulating arrangements in which the upper surface of the insulating material forms an inclined surface, e.g. sloped insulating elements on a flat roof

Ventilation of the spaces between the roof covering and the roof structure

Ventilation of roof coverings provided through roof insulating material having provisions for or being arranged for permitting ventilation of the roof covering, e.g. insulation so arranged that it provides ventilation gaps

Ventilation of roof coverings provided through ventilating means located on the ridge of the roof

Ventilation of roof coverings provided through ventilating means located on the eaves of the roof

Apparatus or tools for roof working like e.g. apparatus or tools for removing roof material, for cleaning the roof, for building roof coverings comprising tiles, shingles or the like, for building roof coverings comprising slabs, sheets or flexible material for handling, during construction of the roof covering, roofing or sealing material in roll or bulk form

Use E04D 15/00 - E04D 15/07 to classify additional information

Apparatus or tools for handling, removing or applying slabs, sheets or flexible materials to roofs