{"id":30889,"date":"2019-06-04T14:55:14","date_gmt":"2019-06-04T12:55:14","guid":{"rendered":"http:\/\/136.144.181.85\/~nedzink\/info-and-advice\/roofsystems\/lozenge-system\/"},"modified":"2019-08-21T13:35:53","modified_gmt":"2019-08-21T11:35:53","slug":"lozenge-system","status":"publish","type":"page","link":"https:\/\/www.nedzink.com\/en\/lozenge-system\/","title":{"rendered":"Lozenge system"},"content":{"rendered":"

<\/p>\n

\n

\n\t\tApplication<\/h2>\n

\n\t\tThe lozenge system is a very elegant application of Zinc-Titanium for roofs and walls. It is used for covering large and small surfaces. The minimum pitch is 25°, or 18° when the vertex of the lozenge is soldered.<\/p>\n

\n\t\tThe standard NedZink lozenge system consists of small, uniform bent plates which hook onto each other. The most common form of a lozenge is the square, although the rhombus is also frequently used. In this brochure, the square lozenge will be discussed. In addition to lozenge, the names zinc tiles and zinc slates are also employed.<\/p>\n

\n\t\tLozenges provide a good solution for the cladding of moderately curved surfaces. When hooked together, the lozenges form a mosaic of uniform surfaces with vertical and horizontal diagonals. See photos figs. 17 + 18. Figure 1 is a schematic representation of the lozenge system. Fig. 16 shows a lozenge roof with references to detail drawings.<\/p>\n

\n\t\t<\/p>\n

\n\t\t<\/p>\n

\n\t\tThe Lozenge Roof<\/h2>\n

\n\t\tSpecifications of standard components<\/h3>\n

\n\t\tStandard lozenge, square<\/u><\/strong> (figs. 2a and 2b)<\/p>\n

\n\t\t <\/p>\n\n\n\n
\n

\n\t\t\t\t\t\tLozenge size<\/p>\n

\n\t\t\t\t\t\t450 x 450 mm<\/p>\n

\n\t\t\t\t\t\t280 x 280 mm<\/p>\n

\n\t\t\t\t\t\t200 x 200 mm<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tCutting size<\/p>\n

\n\t\t\t\t\t\t500 x 500 mm<\/p>\n

\n\t\t\t\t\t\t330 x 330 mm<\/p>\n

\n\t\t\t\t\t\t250 x 250 mm<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tNumber\/m2<\/p>\n

\n\t\t\t\t\t\tapprox. 5.6<\/p>\n

\n\t\t\t\t\t\tapprox. 15.3
\n\t\t\t\t\t\tapprox. 32<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n\t\t <\/p>\n

\n\t\tMaterial thickness: 0.80 – 1.0 mm<\/p>\n

\n\t\tThe vertex of these lozenges have not been soldered and no fixed clips have been soldered.
\n\t\tThe table in fig. 7 shows the relationship between material thickness, lozenge size, number of clips and roof height.<\/p>\n

\n\t\t<\/p>\n

\n\t\tStandard lozenge, rhombus,<\/u><\/strong> vertex 50? (fig. 3)<\/p>\n

\n\t\t <\/p>\n\n\n\n
\n

\n\t\t\t\t\t\tLozenge size<\/p>\n

\n\t\t\t\t\t\twidth “b”<\/p>\n

\n\t\t\t\t\t\t200 mm<\/p>\n

\n\t\t\t\t\t\t250 mm<\/p>\n

\n\t\t\t\t\t\t280 mm<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tCutting size<\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t250 mm<\/p>\n

\n\t\t\t\t\t\t300 mm<\/p>\n

\n\t\t\t\t\t\t330 mm<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tNumber\/m2<\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t25.6<\/p>\n

\n\t\t\t\t\t\t15.3
\n\t\t\t\t\t\t11.9<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t<\/p>\n

\n\t\t\t\t\t\t <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n\t\t <\/p>\n

\n\t\t
\n\t\tLozenges with soldered fixed clips (fig. 2c) and soldered vertex can be supplied on request.
\n\t\tPitches between 18? and 25? require soldered lozenge with soldered vertex. Lozenges in other sizes can be supplied on request.<\/p>\n

\n\t\t<\/p>\n

\n\t\tStandard half-lozenge, square<\/u><\/strong> (fig. 4)<\/p>\n

\n\t\t <\/p>\n\n\n\n
\n\t\t\t\t\tFig. 4a shows the half-lozenge for eaves abutment.
\n\t\t\t\t\tFig 4b shows the half-lozenge for ridge abutment.
\n\t\t\t\t\tSizes and thicknesses are the same as with whole lozenges.
\n\t\t\t\t\tWith a “top” half-lozenge, both a sliding clip and a soldered clip can be used.<\/td>\n		\n

\n\t\t\t\t\t\t<\/p>\n

\n\t\t\t\t\t\t <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n\t\t <\/p>\n

\n\t\t<\/p>\n

\n\t\tSliding clip<\/u><\/strong>, 70 x 50 mm. (fig. 5)
\n\t\tMaterial thickness same as for lozenge. The sliding clip functions as a support clip. These support clips can be made by the fitter.<\/p>\n

\n\t\t <\/p>\n

\n\t\tSoldered clip <\/u><\/strong>(fig. 2c)
\n\t\t50 mm width. Length approx. 100 mm, depending on location and space for fitting onto the base.
\n\t\tThe clip can be made by the fitter and soldered to the lozenge.<\/p>\n

\n\t\t <\/p>\n

\n\t\tProfiles<\/u><\/strong>
\n\t\tThe dimensions of eaves profiles, attachement profiles, etc., will depend on the on-site dimensions; profiles can either be made by the fitter or supplied custom-made in 3 metre lengths.<\/p>\n

\n\t\tSubstructure<\/u><\/strong>
\n\t\tThe lozenge roof must be fully supported by timber, preferably of rough, unplaned boards, 23-25 mm thick and not tongue-and-grooved. With pitches up to 40?, the boards may be no more than 10 mm apart. Above this angle, the timber boards may be spaced up to 10 cm from each other, so long as sufficient wood is always available for fixing the clips.<\/p>\n

\n\t\t <\/p>\n

\n\t\tVentilation: Roofs with thermal insulation must have a ventilated cavity permitting free circulation of external air beneath the timber boarding. See NedZink Advice TZ 5.<\/em><\/p>\n

\n\t\t <\/p>\n

\n\t\tAssembly<\/h2>\n

\n\t\tThe following description concerns the assembling of lozenges with soldered clips on the vertex and two support clips on the upper sides. The clips are to be fixed to the timber boarding with stainless steel or galvanized steel nails or screws.
\n\t\tThe lozenges are mounted from eaves to the ridge.<\/p>\n

\n\t\t<\/p>\n

\n\t\tEaves abutment <\/em><\/strong>
\n\t\tAn eaves profile is first mounted (use a wire to place the clips for this). Hook the bottom half-lozenges (fig. 4a) onto this and then continue with whole lozenges (see fig. 6).<\/p>\n

\n\t\tMarking: Lozenges are mounted with a small degree of play and marking is necessary to achieve a straight-line pattern. Begin marking from the centre of the roof surface by applying chalk lines on every third lozenge.<\/p>\n

\n\t\t<\/p>\n

\n\t\tRidge abutment<\/em><\/strong>
\n\t\tIt is preferable to ensure that half-lozenges (fig. 4b) can be used for making a ridge connection. When this is impossible, the lozenges must be cut to the desired size and the top side must be bent over. These partial or half-lozenges are to be provided with sliding clips or soldered clips for mounting on the timber boarding. Subsequently finish with the top profile. Fig. 8 shows an example of ridge abutment.<\/p>\n

\n\t\t<\/p>\n

\n\t\tWall abutment <\/em><\/strong>(see fig. 9)
\n\t\tConnections with walls are carried out in similar way to the ridge abutment.<\/p>\n

\n\t\t<\/p>\n

\n\t\t<\/p>\n

\n\t\t<\/p>\n

\n\t\tVerge abutment<\/em><\/strong>
\n\t\tTo begin with there is an elegant finish, requiring the edge of the roof to be raised by means of a wedge-shaped beam (see fig. 10a). Another method is to finish with a verge roll (see fig. 10b).<\/p>\n

\n\t\tSide attachment of the roof to wall. Fig. 12a shows the side attachment by means of a zinc profile with additional clip. The straight up-stand of the zinc profile against the wall must be at least 10 cm high. Fig. 12b shows the concealed gutter method.<\/p>\n

\n\t\t<\/p>\n

\n\t\tHip construction<\/em><\/strong><\/p>\n

\n\t\tThe hip rafter can be covered in a number of ways (see fig. 13).
\n\t\tFig. 13a shows a method using a flat profile which is attached to the folded hooks of the lozenges. Fig. 13b shows the concealed gutter construction, which employs a roll placed on the rafter. This is also the case in figs. 13c and 13d. In fig. 13c, the lozenge has been bent against the roll. Ideally, this should be done before placing the roll on the hip rafter. Fig. 13d shows the method using a zinc strip with additional clip.<\/p>\n

\n\t\t <\/p>\n

\n\t\tValley gutter<\/u><\/strong><\/p>\n

\n\t\tThe valley gutter is provided with a continuous additonal clip for hooking the lozenges (see fig. 11).<\/p>\n

\n\t\t <\/p>\n

\n\t\tRoof penetration<\/em><\/strong><\/p>\n

\n\t\tA roof penetration requires the techniques used for ridge abutment, verge abutment and eaves abutment (see fig. 14).<\/p>\n

\n\t\t<\/p>\n

\n\t\t <\/p>\n

\n\t\tFacade cladding<\/h2>\n

\n\t\tThe lozenge system works extremely well for facade\/wall cladding. Assembling and connections are as with the lozenge roof. Fig. 6 shows the base connection, in which the base profile does not need to be bent in accordance with the pitch. The top finish is shown in fig. 15. Connections with windows are as in fig. 14. Although lozenges can also be used to cover very large surfaces, they are especially suitable for small roof surfaces with high pitch and for walls and sides of dormer windows. Small surfaces of course demand adapted lozenge sizes.<\/p>\n

\n\t\t<\/p>\n

\n\t\t<\/p>\n

\n\t\tConsult the table in fig. 12 to calculate the distance between the clips for different bay widths and roof heights.<\/p>\n

\n\t\t
\n\t\tFig. 7 Material thickness of lozenge and number of clips dependent on roof height and lozenge size.<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n
\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\tRoof height <\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\tNumber of clips per m²<\/strong><\/p>\n<\/td>\n

\n\t\t\t\t\t
\n\t\t\t\t\t\tLozenge dimensions (cutting size)<\/span>\n\t\t\t\t<\/td>\n<\/tr>\n
\n

\n\t\t\t\t\t\tto 330 x 330 mm<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t330 x 330 mm to<\/strong><\/p>\n

\n\t\t\t\t\t\t400 x 400 mm<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t400 x 400 mm to<\/strong><\/p>\n

\n\t\t\t\t\t\t500 x 500 mm<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

\n\t\t\t\t\t\tMaterial thickness* and number of clips per lozenge<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

\n\t\t\t\t\t\tMaterial<\/strong><\/p>\n

\n\t\t\t\t\t\tthickness<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tNumber of clips<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tMaterial thickness<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tNumber of clips<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tMaterial thickness<\/strong><\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\tNumber of clips<\/strong><\/p>\n<\/td>\n<\/tr>\n

\n

\n\t\t\t\t\t\t0 – 8 m<\/p>\n

\n\t\t\t\t\t\t-inland<\/p>\n

\n\t\t\t\t\t\t-coast<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t6<\/p>\n

\n\t\t\t\t\t\t6<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1<\/p>\n

\n\t\t\t\t\t\t1<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1<\/p>\n

\n\t\t\t\t\t\t1<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t3<\/p>\n

\n\t\t\t\t\t\t3<\/p>\n<\/td>\n<\/tr>\n

\n

\n\t\t\t\t\t\t8 – 20 m<\/p>\n

\n\t\t\t\t\t\t-inland<\/p>\n

\n\t\t\t\t\t\t-coast<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t6<\/p>\n

\n\t\t\t\t\t\t8<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1<\/p>\n

\n\t\t\t\t\t\t1<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t3<\/p>\n

\n\t\t\t\t\t\t3<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t3<\/p>\n

\n\t\t\t\t\t\t3<\/p>\n<\/td>\n<\/tr>\n

\n

\n\t\t\t\t\t\t20 – 100 m<\/p>\n

\n\t\t\t\t\t\t-inland<\/p>\n

\n\t\t\t\t\t\t-coast<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t8<\/p>\n

\n\t\t\t\t\t\t8<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t0,80<\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1<\/p>\n

\n\t\t\t\t\t\t1<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t3<\/p>\n

\n\t\t\t\t\t\t3<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n

\n\t\t\t\t\t\t1,00<\/p>\n<\/td>\n

\n

\n\t\t\t\t\t\t <\/p>\n

\n\t\t\t\t\t\t3<\/p>\n

\n\t\t\t\t\t\t3<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n\t\t <\/p>\n

\n\t\t* Advice relative to lifetime and load.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Application The lozenge system is a very elegant application of Zinc-Titanium for roofs and walls. It is used for covering large and small surfaces. The minimum pitch is 25°, or 18° when the vertex of the lozenge is soldered. The standard NedZink lozenge system consists of small, uniform bent plates which hook onto each other. […]<\/p>\n","protected":false},"author":9,"featured_media":0,"parent":0,"menu_order":830,"comment_status":"closed","ping_status":"closed","template":"template-import.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-30889","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nLozenge system \u2013 NedZink<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nedzink.com\/en\/lozenge-system\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lozenge system \u2013 NedZink\" \/>\n<meta property=\"og:description\" content=\"Application The lozenge system is a very elegant application of Zinc-Titanium for roofs and walls. It is used for covering large and small surfaces. The minimum pitch is 25°, or 18° when the vertex of the lozenge is soldered. The standard NedZink lozenge system consists of small, uniform bent plates which hook onto each other. 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