GB2439319A

GB2439319A - Rooflight comprising a water deflector

Info

Publication number: GB2439319A
Application number: GB0612413A
Authority: GB
Inventors: Peter Daniel; Paul Herbert; Peter King; Tim Muller
Original assignee: Metal Window Co Ltd
Current assignee: Metal Window Co Ltd
Priority date: 2006-06-22
Filing date: 2006-06-22
Publication date: 2007-12-27
Also published as: EP1870532A2; CA2593650A1; US20080034677A1; EP1870532A3; GB0612413D0

Abstract

A rooflight comprises a baseplate 110, a casement 120 and a deflector for preventing water from impinging on a split line between the casement and the baseplate. The deflector may be provided around the entire perimeter of the rooflight. The deflector may comprise a strip of stainless steel 450 mounted to the baseplate, and/or a lip (550, Fig. 5) integrally formed with the baseplate. The rooflight may further comprise a primary water seal comprising a gasket 431 located in a recess 430 in the casement for cooperation with a mating surface 432 provided on the baseplate. The rooflight may also comprise a secondary water seal 440, 441, 442. Also disclosed are a rooflight comprising one or more baseplate linings removably attached to a baseplate (Figs. 6-7), a rooflight comprising a slot defined in a baseplate for receiving a jamb flashing and/or cill apron (Figs. 8-10), and a rooflight comprising a blind stowable in a cavity defined in a baseplate (Figs. 11-13).

Description

ROOFLIGHT

The present invention is concerned with a rooflight. Rooflights are windows suitable for installation into roofs. Roofs are often angled (so that rain can run off into guttering) and thus rooflights are typically installed into an angled roof.

The uppermost end (i.e. the end nearest the apex of an inclined roof) of a rooflight is typically referred to as the head end. The sides of a rooflight are typically referred to as jambs. The lowermost end (i.e. the end nearest the gutter of an inclined root) of a rooflight is typically referred to as the cill (sometimes spelled sill) end.

A rooflight comprises a casement and a baseplate. The casement is glazed and is moveable relative to the baseplate. The basep late is secured to the roof in which the rooflight is mounted.

One aspect of the present invention provides a water deflector for preventing rain water from impinging directly onto a weather seal between a casement and baseplate. Another aspect provides removable linings which can be mounted an interior face of the casement and/or baseplate. Another aspect provides a slot, for securing flashing, which extends around the perimeter of the baseplate.

Another aspect of the present invention provides a blind which is recessed within cavities and a blind runner, thus reducing unwanted transmission of light when the blind is pulled.

Description of drawings

Embodiments of the invention will be described with reference to the following Figures. For clarity, some features are not illustrated in all Figures. For clarity, in cross section views, only features in the plane are shown (unless stated otherwise).

Figure 1 shows an isometric view of a rooflight and also shows two rafters, one rafter on each side of the rooflight.

Figures 2-5 are primarily concerned with illustrating a water deflector.

Figure 2 shows a cross section of the rooflight of Figure I in a vertical plane El-I! of Figure 1, along a longitudinal centre line of the rooflight. Figure 2 also shows trimmers which span the rafters of Figure I.

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Figure 3 shows a cross section of the rooflight of Figure 1 in the vertical plane IT-Il, and shows a casement of the rooflight opened and spaced apart from a basepiate.

Figure 4 shows a zoomed view of a region IV at the head end of Figure 2, and shows primary and secondary water seals and a deflector plate.

Figure 5 shows an alternative embodiment of the region V of Figure 4.

Figures 6 and 7 are primarily concerned with illustrating the way in which a head casement lining and a head baseplate lining are attached to the head end of the casement and baseplate, respectively.

Figure 6 shows a zoomed view of a region VI at the head end of Figure 2, and shows a head casement lining and a head baseplate lining.

IS Figure 7 shows an exploded view of Figure 6, in which the head casement lining has been separated from the head end of the casement, and in which the head baseplate lining has been separated from the head end of the basepiate.

Figures 8-tO are primarily concerned with illustrating the way in which ajamb flashing and a ciii apron are attached to the rooflight.

Figure 8 shows a plan view of the rooflight of Figure 1 (in a direction normal to the plane of the rooflight), and shows a ciii apron at the ciii end of the rooflight (the rafters of Figure 1 are not shown).

Figure 9 shows a cross section of Figure 8 in a vertical plane IX-IX of Figure 8.

Figure 10 shows a zoomed view of a region X at the ciii end of Figure 9.

Figures 11-13 are primarily concerned with illustrating the way in which a roller blind is incorporated within the rooflight.

Figure Ii shows a cross section of the rooflight of Figure I in the vertical plane Il-Il, and shows a roller blind, a blind and a hem bar.

Figure 12 shows a cross section of the rooflight of Figure 1 in a generally vertical plane XU-XU (the plane Xfl-XH is inclined from true vertical by the same angle as the inclination of the rafters) along a transverse centre line of the rooflight, and shows jamb casement linings and jamb baseplate linings, together with the blind.

Figure 13 shows a zoomed view of a region XUI of Figure 13, and shows a blind runner and retention studs.

Description of preferred embodiments

Figure 1 shows a rooflight 100 comprising a baseplate 110 and a casement 120. The baseplate 120 comprises a baseplate flange 130 which extends around the perimeter of the baseplate 120 and facilitates mounting of the baseplate 120 to rafters. The rooflight TOO is shown mounted to two rafters 140; the rafters 140 are not part of the rooflight 100 but show how the rooflight 100 is IS supported by the rafters 140. The rafters 140 are inclined from horizontal by the pitch angle, a, of the roof and thus the rooflight 100 is also inclined from horizontal by a.

In this embodiment, the rooflight 100 is formed from profiles produced by a pultrusion moulding process. The baseplate 110 comprises four lengths of a profile which are joined together by a mitre joint at each corner. The casement 120 also comprises four length of a profile (different from the profile of the baseplate 110) which are joined together by a mitre joint at each corner. In a pultrusion process, glass fibre and thermosetting resin are pulled through a passage in heated metal die to produce a glass-reinforced plastic profile having a substantially constant cross section. The pultruded profile has the same cross section as the passage in the metal die. In alternative embodiments, materials such as aluminium (whether formed by extrusion or by machining) or PVC (polyvinyl chloride) may be used instead or in addition.

As those skilled in the art will appreciate, tiling battens (not shown) typically extend across the rafters. Tiles/slates are mounted above the tiling battens by nailing the tiles/slates to the tiling battens. The tiling battens are also used to attach roofing felt underneath the tiling battens. Those skilled in the art will also appreciate that the rooflight 100 requires an aperture in the roofing felt and that the roofing felt is sealed to the rooflight 100 (around the perimeter of the rooflight 100) to prevent entry of rainwater through to the interior side of the roofing felt in the region of the rooflight 100.

In this embodiment, the rooflight 100 is double glazed. An alternative embodiment is single glazed.

In this embodiment the rooflight 100 is generally rectangular. In alternative embodiments the rooflight is polygonal.

S Water deflector Figure 2 shows a cross section of the rooflight of Figure 1 in a vertical plane 11-11 of Figure 1. As shown, the head end and casement end of the rooflight are generally symmetric about the transverse plane Xl1-XI1. Figure 2 also shows trimmers 200 which span the rafters 140 of Figure I. The baseplate flange 130 rests on the trimmers 200 (and on the rafters 140). In this embodiment the casement is double glazed and has an upper pane of glass 210 and a lower pane 220. The panes 210, 220 are bonded to the four profiles which make up the casement 120.

Figure 3 shows a view similar to that of Figure 2 but in which the casement 120 has been separated from the baseplate 110. As those skilled in the art will appreciate, the ciii end 300 of the casement inay be moved upwards relative to the cill end 310 of the baseplate 310 by using a handle (not shown) or an electric motor mechanism (not shown), optionally in conjunction with one or more gas springs (not shown). Also not shown is a linkage which connects the casement 120 to the basepiate. Suitable handles, electric motor mechanisms and linkages are known to those skilled in the art. in alternative embodiments, the linkage may be replaced with a hinge at the head end between the casement 120 and basep late 110.

Figure 4 shows a zoomed view of a region IV at the head end of Figure 2. in this embodiment the casement 120 is provided with two recesses 430, 440. The recess 430 extends around the exterior perimeter of the pultrusion profile 420 of the casement 120; the recess 440 extends around the interior perimeter of the profile 420. Each recess 430, 440 is provided with a respective rubber gasket 431, 441 that is captively retained within its respective recess 430, 440. When the rooflight is closed (so that the casement 120 is flush with the baseplate 110), the rubber gaskets 43!, 441 form a substantially watertight seal against mating surfaces 432, 442 of the baseplate pultrusion profile 440. The recess 430, rubber gasket 431 and mating surface 432 form a primary water seal.

The recess 440, rubber gasket 441 and mating surface 442 form a secondary water seal.

In this embodiment, when the casement 120 is closed, the casement 120 is spaced apart from the baseplate 110 by 2mm. The rubber gaskets 431, 441 bridge the 2mm gap. The 2mm gap forms, in effect a channel at the split line (the split line is, strictly peaking, planar but at the head end of the rooflight 100 the split plane can be regarded as a split line) which could convey impinging rain drops directly towards the primary water seal.

A deflector plate 450 is mounted to the baseplate 110. The deflector plate 450 prevents rain drops from impinging directly on the split line between the casement 120 and baseplate 110, and thus improves the ability of the primary water seal 430, 431, 432 to prevent entry of water into the rooflight 100. In other words, the deflector plate 450 ensures that the kinetic energy of falling raindrops is substantially dissipated before the water encounters the primary water seal. The deflector plate 450 also reduces water entry through the head end of the rooflight 100 when the casement 120 is partially opened.

In this embodiment the defector plate extends the entire width of the casement 120 and overlaps the casement 120 (when the casement 120 is closed) by an overlap distance 460. In this embodiment the overlap distance is 5mm but in alternative embodiments the overlap distance may be any integer IS in the range 1mm to 40mm inclusive. In this embodiment the deflector plate 450 is made of stainless steel and is attached to the baseplate using adhesive (not shown) and screws 470.

In this embodiment, the deflector plate 450 is positioned on the baseplate 110 so that when the casement 120 is closed, there is a substantially zero gap between the deflector plate 450 and the casement 120. In alternative embodiments, the deflector plate 450 is positioned so that when the casement 120 is closed, the deflector plate 450 is spaced apart (in a direction perpendicular to the distance 460) from the casement 120, for example by 2mm.

Figure 5 shows an alternative embodiment of the region V of Figure 4. In this alternative embodiment, instead of using a deflector plate 450, the baseplate 110 is provided with a tip 550 along the head end. In yet other embodiments, the casement 110 is provided with a deflector plate or a lip. In yet other embodiments, the entire exterior periphery of the casement 120 or baseplate is provided with a deflector plate or a lip.

Casement lining and baseplate lining Figure 6 shows a zoomed view of a region VI at the head end of Figure 2, and shows a head baseplate lining 610 mounted to the head end of the baseplate 110 also shows a head casement lining 620 mounted to the head end of the casement 120. 5

Figure 7 shows an exploded view of Figure 6. The head baseplate lining 610 comprises a generally "L" shaped bracket 611. A lug 612 of the bracket 611 projects substantially normal to the plane of the head baseplate lining 610. The baseplate profile 410 has a groove 613; the width of the groove is dimensioned to retain the lug 612 by a friction fit. Similarly, the head casement lining 620 comprises a generally "L" shaped bracket 621 having a lug 622; the casement profile 420 has a groove 623.

Although not shown by Figures 6 and 7, in this embodiment the cut end and two jambs of the basepiate 110 and casement 120 are also provided with linings. The head and ciii linings are mounted first and then the jamb linings are mounted. The dimensions of the linings are such that the jamb linings lock the head and ciii linings in position so that the head and ciii linings cannot be removed without first removing the jamb linings.

The various linings close off what would otherwise be open cavities of the baseplate profile 410 and casement profile 420, and therefore prevent access to the cavities. It will be recalled that, for clarity, a handle (having a handle mechanism), an electric motor mechanism, optional gas springs, and linkages have not been shown. In this embodiment, the handle mechanism, electric motor mechanism and linkages are mounted in the cavities of the baseplate profile 410 and casement profile 420. The various linings therefore prevent inadvertent access to the handle mechanism, electric motor mechanism, optional gas springs, and linkages. Access to the handle mechanism, electric motor mechanism and linkages may be obtained by pulling the appropriate lining to overcome the friction fit between the lug and groove.

The arrangement shown by Figure 7 also allows the linings to be detached for decoration. For example, if a householder redecorates the room into which the rooflight 100 is mounted, the householder may remove the linings and paint the linings so that the painted linings match the colour otthe redecorated room.

The embodiment shown by Figures 6 and 7 has separate brackets 611, 612 such that a bracket 611, 612 is provided, in this embodiment, every 20cm along the lining. In this embodiment the grooves 613, 623 are continuous as they are moulded into the baseplate profile 410 and casement profile 420. In alternative embodiments, each lining may be provided with a single bracket that extends substantially the entire length of the bracket.

In yet other embodiments, different methods may be used to detachably mount the linings. For

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example, magnets may be mounted in the linings and profiles. Alternatively, a hook and loop type fasteners may be used.

In alternative embodiments, either only the baseplate or only the casement is provided with removable linings. In other embodiments, the rooflight comprises a glazed basepiate but does not comprise a casement that is movable relative to the baseplate.

Figure 7 also shows the way in which the upper pane 210 and lower pane 220 of glass are bonded to the casement profile 420. In this embodiment, the upper pane 210 is bonded to the casement profile 420 around the exterior perimeter 700 of the casement profile 420. The lower pane 220 is bonded to the casement profile 420 around the interior perimeter 710 of the casement profile. Thus the upper pane 210 is larger than the lower pane 220.

In an alternative embodiment, the panes 210 and 220 are the same size. In this alternative IS embodiment, the profile 420 has a perimeter lip which surrounds both the panes 210, 220 and is spaced apart from the panes 210, 220 by a 3mm perimeter gap. The lower pane 220 is bonded to the profile. A weatherproof seal is formed between the upper pane 210 and the perimeter lip using silicone sealant to bridge the 3mm gap.

Jamb flashing and ciii apron Figure 8 shows a plan view of the rooflight 100 of Figure I (in a direction normal to the plane of the rooflight lOG), and shows a jamb flashing 800 and a cill apron 810 (the rafters of Figure 1 arc not shown). The jamb flashing 800 generally has the shape of an upside down "U" and provides, in this embodiment, 30cm of flashing around the two jambs and head of the baseplate 110. The cill apron 810 provides, in this embodiment, 30cm of flashing around the cill of the baseplate 110. In this embodiment the jamb flashing 800 and the cill apron 810 are formed of metal, for example aluminium.

As those skilled in the art will appreciate, lead flashing is conventionally used to integrate a rooflight with, for example, tiles or slates of the roof. The lead flashing guides rain water over the first or so row of tiles downstream of the rooflight. The installation of lead flashing is a skilled operation which increases the cost of installing conventional rooflights.

The ciii ends of the jamb portions of the jamb flashing 800 overlap the ends of the cill apron 810 but do not overlap a central portion 820 of the ciii apron 810. Once the rooflight 100, jamb flashing 800 and ciii apron 810 have been installed into a roof, the jamb flashing 800 is covered by roof tiles/slates and is thus hidden; the central portion 820 of the ciii apron 810 is visible as the ciii apron 810 overlies a row (or several rows, depending on the size of the tiles/slates) of tiles/slates.

As shown in more detaii by Figures 9 and 10, the exterior perimeter of the baseplate flange 130 is provided vith a slot into which the jamb flashing 800 and cill apron 810 are received. Figure 8 shows that there are two regions 830 where the jamb flashing 800 overlaps the ciii apron 810 within the slot. Figure 8 shows in phantom lines the edges of the jamb flashing 800 and the cill apron 810 to withintheslot.

Figure 9 shows a cross section of Figure 8 in a vertical plane IX-EX of Figure 8, and shows the rooflight IOU inclined by the angle a.

Figure 10 shows a zoomed view of a region X at the ciii end of Figure 9. Figure 10 shows a slot 1000. The slot 1000 is the ciii end of the slot which, as mentioned above, extends around the exterior perimeter of the baseplate flange 130. The slot 1000 receives the uppermost end of the ciii apron 810. Grub screws 1010 (only a single grub screw 1010 is visible in the vertical plane IX-IX shown zoomed by Figure 10) retain the ciii apron 810.

To mount the ciii apron 8i0 to the slot 1000, the slot 1000 is first filled with a sealant such as silicone sealant. The ciii apron 810 is then inserted into the slot 1000 and the grub screws 1010 are tightened to secure the ciii apron 810. Excess sealant on the top surface 810t of the ciii apron 810 is then removed (excess sealant on the bottom surface 81 Ob of the ciii apron 810 need not be removed).

The jamb flashing 800 is mounted to the baseplate flange 130 in the same way as the cill apron 810, using sealant and grub screws. The jamb flashing 800 may be mounted to the basepiate flange 130 before or after the ciii apron 810 has been mounted (provided that the ciii ends of the janib portions of the jamb flashing 800 overlap the ends of the cill apron 810).

As shown by Figure 10, the opening of the slot 1000 is located at a corner junction of the basepiate flange 130. Tn an alternative embodiment, the opening of the slot 1000 is moved onto a face 1020 of the baseplate flange 130 (i.e. onto the face from which the grub screws 910 are inserted). In a less preferred alternative embodiment, the opening of the slot 1000 is moved onto a face 1030 of the baseplate flange (i.e. onto the uppermost face of the basepiate flange 130).

In this embodiment, the slot (i.e. including the slot 1000 at the ciii end of the basepiate flange 130) is formed in the baseplate flange 130 during the puitrusion moulding process used to manufacture the baseplate profile 410.

As shown by Figure 10, the slot 1000 at the ciii end of the baseplate 110 is orientated (that is, when the rooflight 100 is mounted to a sufficiently inclined roof) so that even if the sealant in the slot 1000 degrades, rain water will still be prevented from reaching the bottom surface 810b of the ciii apron 810 as the water would have to flow uphill in the slot in order to reach the bottom surface 8 lOb. in an alternative embodiment, the slot 1000 is in the same plane as the baseplate flange 130; in this alternative embodiment the grub screws are inserted from a face 1040 on the underside of the baseplate flange 130.

IS Roller blind Figure II shows a cross section of the rooflight of Figure 1 in the vertical plane Il-li, and shows a roller blind 1100, blind material 1101 and a hem bar 1102. As shown, the roller blind 1100 is mounted at the head end of the rooflight 100, inside a cavity in the baseplate profile 410. The hem bar 1102 allows a user to readily extend the blind by pulling the blind material 1101 out of the cavity in the baseplate profile 410. As those skilled in the art will appreciate, in alternative embodiments an electric motor may be provided in the cavity in the ciii end of the baseplate profile in order to electrically extend and retract the blind.

Figure II also shows the head baseplate lining 610, the ciii baseplate lining 1110 and ciii casement lining 1120 (the cill basepiate lining 1110 and ciii casement lining 1120 were not previously shown). As shown by Figure I I (but for clarity, not shown by Figures 6 and 7), the head baseplate lining 610 and the ciii baseplate lining I I 20 do not extend to the lower plane of the baseplate 110.

A slot shaped aperture 1130 is defined between the head baseplate lining 610 and the bottom plane of the baseplate 110; the aperture 1130 allows the blind material 1101 to leave the cavity in the baseplate profile 410. Similarly, a slot shaped aperture 1131 is defined between the ciii basepiate lining 1110 and the bottom plane of the basepiate 110; the aperture 1131 allows the hem bar 1102 to enter the cavity in the cill end of the baseplate profile 410.

An advantage of the rooflight 100 over prior art rooflights is the use of profiles having cavities; the cavities allow components (such as the roller blind 1100) to be mounted inside the frame of the rooflight 100. This avoids obscuring the glazed aperture of the casement 110. Conventional rooflights are manufactured from solid materials such as timber and thus if a roller blind is fitted, the roller blind is mounted to the head end of the baseplate. Ignoring the matter that conventional rooflights do not have baseplate linings, a conventional rooflight would, in effect, mount the roller blind 1100 to the head baseplate lining 610, thus obscuring a portion of the glazed area of the casement and thus reducing the amount of light transmitted through the rooflight.

Figure 12 shows a cross section of the rooflight of Figure I in a generally vertical plane Xll-XlE (the plane X11-XU is inclined from true vertical by the same angle as the inclination of the rafters), and showsjamb baseplate linings 1210 and jamb casement linings 1220, together with the blind. As shown, the jambs of the rooflight are generally symmetric about the longitudinal plane [1-Il.

Figure 13 shows a zoomed view of a region Xl1l of Figure 12, and shows a blind runner 1300 and a IS retention stud 1310. A blind runner 1300 is mounted (using, in this embodiment, a suitable adhesive 1301) to the baseplate 110 on each jamb. A plurality of retention studs 1310 are fitted at intervals along each edge of the blind 1101. The blind runners 1330 each have a constriction 1330 that is smaller than the retention studs 1310. The edges of the blind 1101 are therefore captively retained within the blind runners 1300.

As shown by Figure 13, the jamb baseplate linings 1210 do not extend to the bottom plane of the baseplate 110. For each jamb, a slot shaped aperture 1340 (analogous to the slot shaped apertures 1110 and 1111) is defined between the jamb baseplate lining 1210 and the bottom plane of the baseplate 110, thus allowing the edges of the blind 1101 to enter the blind runners 1300.

Again, conventional rooflights are made from solid materials such as timber and thus, ignoring the matter that conventional rooflights do not have baseplate linings, for a conventional rooflight the blind runners would be mounted to, in effect, the jamb baseplate linings, thus obscuring a portion of the glazed area of the casement and thus reducing the amount of light transmitted through the rooflight.

A further advantage of having the roller blind 1100 and blind runners 1300 mounted within a cavity of the profile 420 is that unwanted transmission of light around the edges and ends of the blind 1101 is reduced. As shown by Figure II, 12 and 13, unwanted light cannot pass around the edges or ends of the blind 1101 as the profile 420 (in conjunction with the head baseplate lining 610, cill baseplate lining 1120 and jamb baseplate linings 1210) and also the blind runners 1300 form, in effect, a light box. The light box attenuates transmission of light as any light would have to reflect off multiple surfaces in order to escape around the edges or ends of the blind 1101. In some embodiments, a blackout blind is fitted as the blind 1101 and the combination of rooflight 100 and blackout blind is effective in preventing unwanted transmission of light.

Claims

CLAIMS: I. A rooflight comprising: a baseplate; a casement; and a

deflector for preventing water from impinging on a split line between the casement and baseplate.

2. A rooflight according to claim 1, wherein the deflector is provided at a head end of the rooflight.

3. A rooflight according to claim I or 2, wherein the deflector is provided around substantially the entire perimeter of the roofi ight.

4. A rooflight according to any one of claims I to 3, wherein the deflector comprises a strip of IS stainless steel.

5. A rooflight according to claim 4, wherein the strip is mounted to the baseplate.

6. A rooflight according to any one of claims I to 6, wherein the deflector comprises a lip.

7. A rooflight according to claim 6, wherein the lip is integrally formed with the baseplate.

8. A rooflight according to any one of claims I to 7, comprising a primary water seal.

9. A rooflight according to claim 8, wherein the primary water seal comprises: a recess formed in the perimeter of the casement; a gasket located in the recess; a mating surface provided on the baseplate for cooperation with the gasket.

10. A rooflight according to claim 8 or 9, comprising a secondary water seat.

I I. A rooflight comprising: a baseplate; glazing; and one or more baseplate linings removably attached to the baseplate.

12. A roollight according to claim ii, wherein the one or more baseplate linings each comprise at least one lug, and wherein the basepiate comprises a groove for receiving the at least one lug by a friction fit.

13. A rooflight according to claim 12, wherein the one or more baseplate linings each comprise one or more brackets, and wherein the one or more brackets comprise the one or more lugs.

14. A roollight according to any one of claims II to 13, wherein the one or more baseplate linings and the baseplate comprise magnets and/or hook and loop fasteners.

15. A rooflight according to any one of claims II to 14, comprising a head baseplate lining, a cill basepiate lining and two jamb baseplate linings.

16. A rooflightaccordingtoclaim 15, wherein the baseplate linings are dimensioned sothat the IS jamb baseplate linings retain the head and ciii baseplate linings.

17. A rooflight according to any one of claims II to 16, further comprising a casement movable relative to the baseplate, wherein the casement comprises the glazing.

18. A rooflight according to claim 17, further comprising one or more casement linings removably attached to the casement.

19. A rooflight according to claim 18, wherein the one or more casement linings each comprise at least one lug, and wherein the casement comprises a groove for receiving the at least one lug by a friction fit.

20. A rooflight according to claim 19, wherein the one or more casement linings each comprise one or more brackets, and wherein the one or more brackets comprise the one or more lugs.

21. A rooflight according to any one of claims 18 to 20, wherein the one or more casement linings and the casement comprise magnets and/or hook and loop fasteners.

22. A rooflight according to any one of claims 18 to 21, comprising a head casement lining, a ciii casement lining and two jamb casement linings. )

23. A rooflight according to claim 22, wherein the casement linings are dimensioned so that the jamb casement linings retain the head and ciii casement linings.

24. A rooflight comprising: a basepiate, wherein a slot, for receiving ajamb flashing and/or a ciii apron, is defined around the perimeter of the baseplate.

25. A rooflight according to claim 24, further comprising one or more threaded holes, around the perimeter of the baseplate, for receiving one or more threaded fasteners, wherein the one or more threaded holes intersect the slot.

26. A rooflight according to ciaim25, further comprising grub screws.

27. A rooflight according to any one of claims 24 to 26, wherein the opening of the slot is located at IS a vertex of the perimeter of the baseplate.

28. A rooflight according to any one of claims 24 to 27, further comprising a ciii apron and/or a jamb flashing.

29. A rooflight according to any one of claims 24 to 28, wherein the slot comprises sealant.

30. A rootlight comprising: a baseplate, wherein a cavity is defined in the baseplate; glazing; and a blind, wherein the blind is stowabie in the cavity.

31. A rooflight according to claim 30, wherein the blind is provided as a roller blind, and wherein the roller blind is located in the cavity.

32. A rootlight according to claim 31, wherein the roller blind is located at a head end of the rooflight.

33. A rooflight according to any one of claims 30 to 32, wherein the baseplate comprises jambs, wherein a cavity is defined in each janib, and wherein the edges of the blind are receivable in the jamb cavities. 1+

34. A rooflight according to claim 33, wherein the jambs comprise blind runners and wherein the edges of the blind comprise retention studs.

35. A rooflight according to any two preceding claims.

36. A rooflight as herein described and/or as shown in any one of the accompanying Figures.