[0001] This invention relates to claddings, particularly to claddings for roofs.
[0002] Traditional roof cladding methods include application of slates and tiles of various
types, patterns and styles, all requiring fixing, usually via secondary timberwork
such as laths often involving nailing thereto and nowadays usually over felting. With
time, such roof claddings deteriorate in various ways leading to a need for repairs,
ultimately replacement. Wherever there has been penetration of the cladding and passage
of water past cladding elements, at least secondary timberwork is usually in a poor
state and also requires replacement, most often the underlying felt too, and substantial
refurbishment is not infrequently necessary of main timberwork
[0003] Alternative roof claddings using relatively large sheets, usually corrugated and
overlapped at sides and ends wherever necessary, generally also involves securement
in a manner requiring penetration through the sheets and into underlying timberwork.
[0004] It is an object of this invention to provide cladding suitable, inter alia, for roofs,
and that is simpler to install and more reliable after installation, whether at replacement
of an existing roof cladding or as original roof cladding.
[0005] According to one aspect of this invention, cladding panels, generally of large size
at least relative to slate/tile systems if not also relative to conventional overlapped
sheet systems, comprise an outer water-impervious layer, preferably formed in a mould
and thus able exteriorly to take on any desired appearance including that of a traditional
slate/tile system, which panels have anchorage for fixing members to extend away from
interior surface of the water layer, which fixing members are to be secured to sides
of supporting beams/rafters or studding. Anchorage is preferably by way of elongate
members that may by their nature contribute to overall strength and stiffness of the
panel and afford key-ways that extend across the panel substantially horizontal in
relation to intended installation for retaining engagement by appropriately formed
ends of fixing members whose other ends are adapted for fixing to sides of supporting
beams etc. Such panels further preferably comprise an inner layer of insulating material
that can readily be compatable at least in terms of mutual adherence and heat expansion
characteristics with the outer layer.
[0006] A suitable outer layer can be made using resin bonded glass fibre materials, preferably
self-coloured for the desired exterior finish, and said elongate members for anchoring
fixing members can then be bonded onto that outer layer also using resin bonded glass
fibre material, advantageously as a further applied layer prior to application of
said insulating material itself advantageously as a spray-on foaming plastics material
such as a suitable polyurethane.
[0007] Suitable elongate members for anchoring fixing members can have an interior key-way
within which the first mentioned ends of the fixing members are captive, say after
insertion through an elongate slot of such key-way and rotation through an angle,
conveniently 90 degrees, into capture below sides of the slot.
[0008] Preferred application of panels hereof to roofs is as single panels for each pitch
of a roof, or part of such pitch, at least as to width of the pitch, which avoids
side jointing between such panels. If necessary, wide roof pitches could be divided,
say stepped, to suit. Alternatively joining of panels to form continuous lengths can
be done conveniently by way of guttering for which we find particular advantage from
bonding the guttering along an edge of the panelling, usually to one panel inset from
the edge then overlapped by the adjacent panel. Such guttering can provide for stepped
overlapping of panels in relation to falls as well as side by side connection.
[0009] Accordingly, another preferred aspect of this invention is to produce panels using
an overall mould of large enough size to suit most roof pitches, for example forty
feet wide and twenty feet long, from which full size moulded panels products could
be cut down to actual desired size or, normally preferably, the mould selectively
partitioned to suit known production requirements.
[0010] Whilst application of panels hereof to roofs is particularly advantageous in covering
pitches by a single unpenetrated panel, other applications could be to cladding studding
of walls in place ot tiling or slating as is a feature of some buildings. Whether
for roofs or other applications, it is feasible to joint panels hereof one below and
overlapped by another, preferably then sealed at the overlap.
[0011] Specific implementation of embodiment of this invention will now be described, by
way of example, with reference to the accompanying drawing, in which:-
Figure 1 is a fragmentary section through part of one panel;
Figure 2 is a fragmentary rear plan view of part of that panel;
Figure 3 shows a fixing member;
Figure 4 shows fixing to a rafter; and
Figure 5 indicates an adjustable width mould.
[0012] In the drawing, referring first to Figures 1 and 2, part of a roofing panel, though
capable of other cladding application, is indicated generally at 10. The panel 10
comprises an outer layer 12 of moulded resin bonded glass fibre material whose outer
surface 12A has a multiple tile or slate appearance taken from the bottom of an appropriate
mould. Such material can conveniently be self-coloured as desired. Bonded on to the
outer layer at its inner surface 12B, using another layer 14 of resin bonded glass
fibre, are elongate anchorage members, see 16, presenting an interior key-way 16K
entrant from a slot 16S. The panel 10 has an insulating inner layer 18 of a material
compatible with the resin-bonded glass fibre, say a foam polyurethane and which may
be spray-applied.
[0013] The elongate anchorage members 16 serve for fixing members 20 of generally T-shape,
see cross piece 20C and stem 20S in Figure 3, the latter shown flattened to a plate-like
form at 20P and apertured for fixing to sides of supporting beams etc, for example
nailed to a rafter 22 as in Figure 4.
[0014] Further concerning the elongate anchorage members 16, they are shown disposed extending
along the width of the panel 10, i.e. transversely of conventional roof supporting
rafters 22, and may contribute to strength and stiffness of the panel 10. As shown,
the members 16 are of composite construction where a base part carriers joggled side
parts to define the key-way 16K and slot 16S, and are typically of steel sheet spot
welded together beyond the key-way 16K. However, other materials could be used and
other constructions, for example of integral type suitable for extrusion in aluminium
and/or plastics materials.
[0015] Generally, the members 16 can be of lengths substantially less than the whole width
of the panel 10, perhaps up to two or three feet long compared with up to forty feet
width of panel. However, they should, of course, be disposed to suit support beam
(e.g. rafter) spacings and reasonable fixing requirements for the panels 10.
[0016] At least for domestic properties, most roof pitches are less than forty feet wide
and less than twenty feet long. Accordingly, a mould of that size is envisaged, see
30 in Figure 5, but preferably can be selectively and adjustably partitioned at least
as to lesser width, see movable partition 30P. Then, panels can be made to fit the
whole of a pitch. Longer pitches can be dealt with by overlapping panels 10 hereof,
preferably minus an edge-adjacent portion of inner insulating layer 18 at the intended
lower edge, which can be a normal feature of the panels hereof as same would not be
required at overhang for draining into gutters.
[0017] Joining of panels to form a continuous length is also contemplated especially by
way of guttering extending along one edge of the panelling and on to which an adjacent
panel is placed. Such guttering may be of any convenient shape usually providing an
open channel with opposite, usually parallel, side edges, one of which may be bonded
or otherwise secured to one panel on the undersurface and inset from the edge thereby
leaving the guttering projecting from the edge to be contacted by an adjacent panel,
usually abutting on that edge providing sealing either by way of a sealing edge say
of plastics or by subsequent bonding using resin or the like.
[0018] Resilience in the guttering and/or dimensioning of the free edge may be such as to
allow the adjacent panels to fit in overlapping relation. The guttering allows build
up of continuous lengths where one piece construction of sufficient size to cover
a whole roof pitch, are impractical.
1. A cladding panel for a roof which cladding panel is generally of large size at
least relative to slate/tile systems if not also relative to conventional overlapped
sheet system, and comprises an outer water-impervious layer, and anchorage means for
fixing members to extend away from interior surface of the water-impervious layer,
which fixing members are to be secured to sides of supporting beams/rafters or studding.
2. A cladding panel as claimed in claim 1 in which the anchorage means is provided
by elongate members.
3. A cladding panel as claimed in claim 2 in which the elongate members by their nature
contribute to overall strength and stiffness of the panel.
4. A cladding panel as claimed in claim 1, 2 or 3 in which the anchorage means affords
key-ways that extend across the panel substantially horizontally in relation to intended
installation for retaining engagement by appropriately formed ends of fixing members.
5. A cladding panel as claimed in claim 4 in which said ends of the fixing members
are captive in the key-way after insertion through an elongate slot of such key-way
and rotation into capture below sides of the slot.
6. A cladding panel as claimed in any one of claims 1 to 5 further comprising an inner
layer of insulating material.
7. A cladding panel as claimed in any one of claims 1 to 6 in which at least the outer
layer is formed in a mould and thus able exteriorly to take on any desired appearance
including that of a traditional slate/tile system.
8. A cladding panel as claimed in claim 7 in which the mould is of a size large enough
to suit most roof pitching from which full size moulded panels can be cut down to
actual desired size or the mould selectively partitioned to said known production
requirements.
9. A cladding panel as claimed in any preceding claim in which the outer layer is
made using resin bonded glass fibre materials and said anchorage means