GB2385084A

GB2385084A - Reveal lining for window / door frame

Info

Publication number: GB2385084A
Application number: GB0224157A
Authority: GB
Inventors: Andrew Russell Gofford
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-17
Filing date: 2002-10-17
Publication date: 2003-08-13
Anticipated expiration: 2022-10-17
Also published as: GB0224157D0; GB2385084B

Abstract

A reveal lining 10 for a window or door frame 20 recessed in a wall aperture 22, 24 comprises an integral length of plastics material in an L-shape, having one planar limb 12 which abuts the window or door frame, and a non-planar limb 14 which extends at ninety degrees from the planar limb in order to overlap the wall 28 to one side of the opening. The non-planar limb 14 is shaped to resemble contoured architrave. The distal edge (16, Fig 1) of the non-planar limb 14 has a return portion 18 which is directed back towards the planar portion. The lining may be used to surround at least two adjacent sides of a building opening. The ends of the lining may be mitred (54, Fig 5) or cut square to use with corner elements (56, Fig 6). A method is described which uses clips (52, Fig 4) to hold the edge of the planar limb to the window/door frame.

Description

TITLE Lining of window and door openings DESCRIPTION This invention relates to the lining of window and door openings.

The invention was originally conceived to facilitate the making good of the reveals of window openings when replacement double-glazed window units are fitted, and the following description will concentrate on this application of the invention. However, the invention is also applicable to the lining of window openings of newly built-buildings and to the lining of door openings.

Some types of old-fashioned window frames are fitted into the window aperture in the building wall so that the frame is recessed behind the interior face of the wall. In other words, there is a reveal between the inner surface of the frame and the interior face of the wall. The reveal may be finished by being lined with a plain, painted lining board, and the comer between the inner edge of the lining strip and the inner surface of the wall may be finished with an architrave moulding that is nailed to the board. Alternatively, the reveal may be finished by plastering. Other types of old-fashioned window frames, such a box-sash frames, are not always recessed behind the interior face of the wall, so that there is no reveal other than any reveal that may possibly be formed by the box sash frame itself.

Modem, uPVC-framed, double-glazed window units have relatively thin frames, leaving a reveal between the frame and the interior face of the wall. When old-fashioned window frames are replaced by these modem units, the window opening needs to be made good. This can be very labour-intensive and time-consuming, especially when box sash frames are being replaced. Typically, this is done by cutting strips of plastics material, that match the material of the window frame, to the required widths and then gluing them together and to the frame and the wall. Even in the case where the reveal for the existing window was finished with a lining board that was not damaged during removal of the existing window and can still be used for the replacement window, the bright clean finish of the replacement window frame (typically "brilliant white") often contrasts with the patina of the existing lining board, which then needs to be repainted.

The present invention is concerned with enabling the reveal of a window or door frame to be finished easily, quickly and inexpensively.

A first aspect of the present invention provides a lining for a window or door opening formed by a window or door frame recessed into an aperture in a wall, the lining being formed by an integral length of plastics material having a generally uniform, generally L-shaped crosssection, one limb of the L-shape being generally planar to form a reveal for the window/door opening with the distal end of the generally planar limb abutting the window/door frame, and the other limb of the L-shape extending generally at right angles to the generally planar limb and having a contoured outer surface to resemble a contoured architrave overlapping the wall to one side of the window/door opening. In order to make good the reveal along one side of the window/door frame, it is therefore merely necessary to cut the lining to length, to trim the width of the reveal limb as required and to affix the lining in place. Because the lining is of integral construction, there is no need to join a lining portion and an architrave portion together.

The lining may be manufactured to blend in with the window/door frame, for example by also being brilliant white. The contouring of the architrave limb can provide a pleasing decorative effect.

Preferably the window/door lining has a generally uniform thickness (of, for example, 1.5 to 3 nun) so as to minimise the amount of plastics material needed to form the lining.

Preferably, the reveal limb is wider than the architrave limb. The width of the reveal limb can, of course, be trimmed as required when the window/door lining is fitted. A width about 200 nun for the reveal limb will enable the lining to be used for most circumstances. A width of about 120 mm for the architrave limb will enable the lining to hide any damage to the wall immediately around the window/door opening in most circumstances and yet not produce an overly-obtrusive architrave.

Preferably, the distal edge of the architrave limb is formed with an edge portion extending from the architrave portion in generally the same direction as the reveal portion, so as to resemble the edge of an architrave moulding. In this case, preferably the distal edge of the edge portion is formed with a return portion extending towards the reveal portion, so as to facilitate bonding of the lining to the wall along that edge and to reinforce the edge.

A second aspect of the invention provides a building having a wall with an aperture to form a window or door opening, a window or door frame recessed into the aperture, and a window/door lining according to the first aspect of the invention extending along at least one

side of the window/door opening, the reveal limb forming a reveal for the window/door opening, the distal end of the reveal limb abutting the window/door frame, and the architrave limb overlapping the wall to one side of the window/door opening.

Preferably, at least two adjacent sides (and more preferably three sides) of the window/door opening are provided with such window/door linings. In this case, the adjacent ends of the window/door linings may be mitred so that the adjacent ends of the reveal limbs abut each other and so that the adjacent ends of the architrave limbs abut each other. However, achieving a good mitre requires care and skill. Therefore, preferably the adjacent ends of the window/door linings are cut square so that the adjacent ends of the reveal limbs abut each other, and a separate comer element is provided having one edge abutting the end of one architrave limb and another edge abutting the end of the other architrave limb.

A third aspect of the invention provides a method of lining a window or door opening formed in a wall, the wall having an aperture therethrough and a window or door frame fitted into the aperture so that the window/door frame is recessed behind the interior face of the wall.

The method comprises the step of fitting a window/door lining according to the first aspect of the invention to one side of the window/door opening so that the distal end of the reveal limb abuts the window/door frame and so that the architrave limb overlaps the interior face of the wall to one side of the window/door opening.

In the case where the wall is a cavity wall having an outer layer and an inner layer, with the window/door frame being affixed to the outer wall layer and with the aperture in the inner wall layer being larger than the window/door frame (typically arising in the case of replacement of a box sash window frame), the method preferably includes the steps of fitting clips to the edge of the window/door frame, and forcing the distal edge of the reveal limb between the clips and the edge of the window/door frame to hold the distal edge of the reveal limb between the clips and the edge of the window/door frame.

A specific embodiment of the present invention will now be described, purely by way of example, with reference to the accompanying drawings, in which: Figure 1 is an end view of a window lining to show its profile ; Figure 2 is a sectioned plan view of the edge of a first example of window opening fitted with the lining of Figure 1;

Figure 3 is a sectioned plan view of the edge of a second example of window opening fitted with the lining of Figure 1; Figure 4 is a sectioned plan view of the edge of a third example of window opening fitted with the lining of Figure 1; Figure 5 is a view of a window from the inside of a building, fitted with the linings of Figure 1 in one way (and with the widths of the linings exaggerated for reasons of clarity); Figure 6 is a view of a window from the inside of a building, fitted with the linings of Figure 1 in a different way; Figure 7 is a front view of a corner element used in the window of Figure 6; and Figure 8 is a sectioned side view of the corner element of Figure 7.

Referring to the Figure 1, a window lining 10 is extruded from plastics material, such as uPVC, and has a generally L-shaped cross-section. The longer limb 12 of the L-shape is generally flat and has a width R of, for example, about 200 mm. The shorter limb 14 of the Lshape projects from the longer limb 12 at an angle slightly greater than a right-angle and has an undulating form. The width A of the shorter limb 14 is, for example, about 120 mm. The distal edge of the shorter limb 14 is turned back to form an edge portion 16 extending generally parallel to the longer limb 12 and having a width E of, for example, about 25 mm. The distal edge of the edge portion 16 is again turned back to form a narrow return 18. The lining has a generally uniform thickness T of, for example, about 2 mm. In use, lining 10 is fitted to an edge of a window opening so that the longer limb 12 forms a reveal and so that the shorter limb 14 and edge portion 16 resembles an architrave moulding.

Figure 2 shows an edge of a first example of window opening which has been fitted with a uPVC double-glazed window unit 20 to replace an existing 70 mm rip-out window. The window unit 20 is fitted in apertures 22, 24 of generally identical sizes in outer and inner layers 26,28 of a cavity wall, and is secured by screws or nails (indicated by dash-dot line 30) to noggins 32 trapped in the cavity. Outer and inner windowsills 34,36 extend along the lower edge of the window opening. Once the window unit 20 has been fitted, the upper and side edges of the window opening are each made good by fitting a length of the window lining 10 of Figure 1. The lengths of the linings 10 are cut to size. Also, the distal edge of the reveal limb 12 is trimmed so the width R of the reveal limb is equal to the depth D by which the interior

face 38 of the frame of the window unit 20 is recessed behind the face 40 of the inner wall layer 28. The linings 10 are then bonded in place, for example with adhesive between the reveal edge of the inner wall layer 28 and the rear of the reveal limb 12 of the lining 10, and with adhesive between the face 40 of the inner wall layer 24 and the return 18 of the lining 10. Beads 42,44 of sealant are then applied at the joint between the face 38 of the window unit 20 and the distal edge of the reveal limb 12 of the lining 10, and at the joint between the face 40 of the inner wall layer 28 and the edge 16 of the lining 10.

It will therefore be appreciated that it is possible to make good one side of the reveal around the window unit 20 merely by the four simple steps of : cutting the lining 10 to length; trimming the width of the reveal limb 12 of the lining 10 ; fixing the lining 10 in place; and applying the beads 42,44 of sealant. The end result is a reveal that matches the window unit 20 and that has a decorative architrave.

Figure 3 shows an edge of a second example of window opening which has been fitted with a uPVC double-glazed window unit 20 to replace an existing 90 mm crucifix rip-out window. This arrangement is similar to that described above with reference to Figure 2, except in the following respects. The reveal for the existing window was lined with a wooden lining board 46 which is retained, and an architrave moulding was fitted which is removed and discarded. The window unit 20 is fitted so that its interior face 38 abuts the edge of the existing lining board 46. The cut and trimmed linings 10 are bonded in place, for example with adhesive between the existing lining board 46 and the rear of the reveal limb 12 of the lining 10, and with adhesive between the face 40 of the inner wall layer 28 and the return 18 of the lining 10.

The lining 10 therefore completely hides the existing lining board 46.

Figure 4 shows an edge of a third example of window opening which has been fitted with a uPVC double-glazed window unit 20 to replace an existing box sash window. This arrangement is similar to that described above with reference to Figure 2, except in the following respects. The aperture 22 in the outer wall layer 26 is slightly smaller than the size of the window unit 20, and the window unit 20 is fitted with its outside face 48 abutting the cavity face of the outer wall layer 26, and with the noggins 32 being secured by screws or nails (indicated by dash-dot line 50) to the outer wall layer 26. The aperture 24 in the inner wall layer 28 is larger than the size of the window unit 20. A series of clips 52, formed by pieces of Dsection strip, is screwed to the edge of the window unit 20. The distal edge of the reveal limb 12 is trimmed so the width R of the reveal limb 12 is about 10 mm greater than the depth D by which the face 38 of the window unit 20 is recessed behind the face 40 of the inner wall layer

28. The distal edge of the reveal limb 12 is forced been the clips 52 and the edge of the window unit 20, and the lining 10 is bonded in place, for example with adhesive between the face 40 of the inner wall layer 28 and the return 18 of the lining 10. Beads 42,44 of sealant are then applied at the joint between the face 38 of the window unit 10 and the reveal limb 12 of the lining 10, and at the joint between the face 40 of the inner wall layer 28 and the edge 14 of the lining 10.

As shown in Figure 5, such linings 10L, R, U are typically fitted to the left, right and upper edges of the window opening. The lower ends of the side linings IOL, R sit on the inner windowsill 36, and beads of sealant may be applied at these joints. At the comers where the left and right linings 10L, R each meet the upper lining IOU, the linings may be mitred, and adhesive or sealant may be applied at the mitred joints 54.

Achieving good mitred comer joints does require a degree of skill and care. As an alternative, and as will now be described with reference to Figures 6 to 8, the upper ends of the left and right linings IOL, R, and both ends of the upper lining 10U, may simply be cut square, and decorative comer elements 56 may be fitted at the comers. Each comer element 56 has a generally square outline of side A generally equal to the width A of the architrave limbs 14 of the linings 10. The thickness E of each comer element 56 is generally equal to the width E of the edge portions 16 of the linings 10. The front face of each corned element 56 may be contoured as desired.

Although the examples of the invention have been described above in the context of making good a window reveal when fitting a replacement window unit, it will be appreciated that the invention is also applicable the lining of windows in newly-built buildings and to the lining of door openings.

It should be noted that the examples of the invention have been described above purely by way of example and that many other modifications and developments may be made thereto within the scope of the present invention.

Claims

CLAIMS 1. A lining (10) for a window or door opening formed by a window or door frame (20) recessed into an aperture (22,24) in a wall (26,28), the lining being formed by an integral length of plastics material having a generally uniform, generally L-shaped cross-section, one limb (12) of the L-shape being generally planar to form a reveal for the window/door opening with the distal end of the generally planar limb abutting the window/door frame, and the other limb (14) of the L-shape extending generally at right angles to the generally planar limb and having a contoured outer surface to resemble a contoured architrave overlapping the wall to one side of the window/door opening.
2. A window/door lining as claimed in claim 1, and having a generally uniform thickness (T).
3. A window/door lining as claimed in claim 1 or 2, wherein the reveal limb is wider than the architrave limb.
4. A window/door lining as claimed in any preceding claim, wherein the distal edge of the architrave limb is formed with an edge portion (16) extending from the architrave portion in generally the same direction as the reveal portion.
5. A window/door lining as claimed in claim 4, wherein the distal edge of the edge portion is formed with a return portion (18) extending towards the reveal portion.
6. A window/door lining substantially as described with reference to the drawings.
7. A building having a wall (26,28) with an aperture (22,24) to form a window or door opening, a window or door frame (20) recessed into the aperture, and a window/door lining (10) as claimed in any preceding claim extending along at least one side of the window/door opening, the reveal limb (12) forming a reveal for the window/door opening, the distal end of the reveal limb abutting the window/door frame, and the architrave limb (14) overlapping the wall to one side of the window/door opening.
8. A building as claimed in claim 7, wherein at least two adjacent sides of the window/door opening are provided with such window/door linings (IOL, R, U).

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9. A building as claimed in claim 8, wherein the adjacent ends of the window/door linings are mitred so that the adjacent ends of the reveal limbs abut each other and so that the adjacent ends of the architrave limbs abut each other (Figure 5).
10. A building as claimed in claim 8, wherein the adjacent ends of the window/door linings are cut square so that the adjacent ends of the reveal limbs abut each other, a corner element (56) being provided having one edge abutting the end of one architrave limb and another edge abutting the end of the other architrave limb (Figure 6).
11. A building substantially as described with reference to the drawings.
12. A method of lining a window or door opening formed in a wall (26,28), the wall having an aperture (22,24) therethrough and a window or door frame (20) fitted into the aperture so that the window/door frame is recessed behind the interior face of the wall, the method comprising the step of fitting a window/door lining (10) as claimed in any of claims 1 to 6 to one side of the window/door opening so that the distal edge of the reveal limb (12) abuts the window/door frame and so that the architrave limb (14) overlaps the interior face of the wall to one side of the window/door opening.
13. A method as claimed in claim 13 and in the case where the wall is a cavity wall having an outer layer (26) and an inner layer (28), the window/door frame is affixed to the outer wall layer, and the aperture in the inner wall layer is larger than the window/door frame, the method including the steps of fitting clips (52) to the edge of the window/door frame, and forcing the distal edge of the reveal limb between the clips and the edge of the window/door frame to hold the distal edge of the reveal limb between the clips and the edge of the window/door frame.
14. A method of lining a window or door opening, substantially as described with reference to the drawings.

14. A method of lining a window or door opening, substantially as described with reference to the drawings. +

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Amendments to the claims have been filed as follows CLAIMS

1. A lining (10) for a window or door opening formed by a window or door frame (20) recessed into an aperture (22,24) in a wall (26,28), the lining being formed by an integral length of a single, generally-uniform thickness (T) of plastics material having a generally uniform, generally L-shaped cross-section formed by a reveal limb (12), an architrave limb (14) and an architrave serif (16); the reveal limb having a generally planar inner surface, a generally planar outer surface to form a reveal for the window/door opening, and a generally square distal edge, so that the distal edge or a distal marginal portion of the outer surface can abut the window/door frame; the architrave limb extending generally at right angles from the reveal limb, having a contoured outer surface to resemble a contoured architrave overlapping the wall to one side of the window/door opening, and having a complementarily contoured inner surface; the architrave serif extending in generally the same direction as the reveal limb from the distal edge of the architrave limb to an abutment portion (18) for abutting the wall; and the cross-section of the lining being shaped so that the lining can accommodate a square corner of a wall with the inner surface of the reveal limb lying flat against the wall and with the abutment portion of the architrave serif abutting the wall.

2. A window/door lining as claimed in claim 1, wherein the reveal limb is wider than the architrave limb.

3. A window/door lining as claimed in claim 1 or 2, wherein the abutment portion of the architrave serif is formed with a return portion (18) extending towards the reveal portion for abutting the wall.

4. A window/door lining substantially as described with reference to the drawings.

5. A building having a wall (26,28) with an aperture (22,24) to form a window or door opening, a window or door frame (20) recessed into the aperture, and a window/door lining (10) as claimed in any preceding claim extending along at least one side of the window/door opening, the outer surface of the reveal limb (12) forming a reveal for the window/door opening, the distal edge of the reveal limb or the distal marginal portion of the outer surface of the reveal limb abutting the window/door frame, the architrave limb (14) overlapping the wall to one side of the window/door opening, and the abutment portion of the architrave serif abutting the wall.

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6. A building as claimed in claim 5, wherein at least two adjacent sides of the window/door opening are provided with such window/door linings (lOL, R, U).

7. A building as claimed in claim 6, wherein the adjacent ends of the window/door linings are mitred so that the adjacent ends of the reveal limbs abut each other and so that the adjacent ends of the architrave limbs abut each other (Figure 5).

8. A building as claimed in claim 6, wherein the adjacent ends of the window/door linings are cut square so that the adjacent ends of the reveal limbs abut each other, a corner element (56) being provided having one edge abutting the end of one architrave limb and another edge abutting the end of the other architrave limb (Figure 6).

9. A building as claimed in any of claims 5 to 8, wherein the lining is fitted around a square corner of the wall (28; 28,46) with the inner surface of the reveal limb lying flat against the wall (Figures 2 and 3).

10. A building substantially as described with reference to the drawings.

11. A method of lining a window or door opening formed in a wall (26,28), the wall having an aperture (22,24) therethrough and a window or door frame (20) fitted into the aperture so that the window/door frame is recessed behind the interior face of the wall, the method comprising the step of fitting a window/door lining (10) as claimed in any of claims 1 to 4 to one side of the window/door opening so that the outer surface of the reveal limb (12) forms a reveal for the window/door opening, the distal edge of the reveal limb (12) or the distal marginal portion of the outer surface of the reveal limb abuts the window/door frame, the architrave limb (14) overlaps the interior face of the wall to one side of the window/door opening, and the abutment portion of the architrave serif abuts the wall.

12. A method as claimed in claim 11 and in the case where the wall is a cavity wall having an outer layer (26) and an inner layer (28), the window/door frame is affixed to the outer wall layer, and the aperture in the inner wall layer is larger than the window/door frame, the method including the steps of fitting clips (52) to the edge of the window/door frame, and forcing the distal edge of the reveal limb between the clips and the edge of the window/door frame to hold the distal marginal portion of the outer surface of the reveal limb against the edge of the window/door frame.

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13. A method as claimed in claim 11 or 12, further including the step, before the fitting step, of trimming the distal edge of the reveal limb to achieve a desired width of the remaining portion of the reveal limb.