YWY M08 The new VELUX solution

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1 YWY M08 The new VELUX solution VELUX roof windows and vertical window elements installed as a dormer in roof pitches between 42º and 52º YWY M08 is available as a double or triple unit and can be installed in roof pitches between 42º and 52º. 1/26 W-PRM MAS/I-SUP/ KNS

Components of YWY M08 YWY M08 2003K double unit YWY M08 2002K triple unit YWY M08 2002K (double unit) consists of

YWY M08 2003K (triple unit) consists of 3 VELUX roof windows, 3 vertical window elements, 2 VELUX adjustable

2 Components of YWY M08 YWY M K double unit YWY M K triple unit YWY M K (double unit) consists of 2 VELUX roof windows, 2 vertical window elements, 1 VELUX adjustable support rafter EBY and 1 flashing system. YWY M K (triple unit) consists of 3 VELUX roof windows, 3 vertical window elements, 2 VELUX adjustable support rafters EBY and 1 flashing system. Parts drawing of flashing system for YWY M K: 2/26 W-PRM MAS/I-SUP/ KNS

3 Step 1 Determine position of aperture Double unit Triple unit roof pitch roof pitch a = 42 a = 52 a = 42 a = 52 H (mm) Wi (mm) Try to allow for a clear view depending on what the room is used for. 2. Where necessary, sill height must be in accordance with current Building Regulations. 3. Based on 1 and 2 decide which tile should form the row immediately below YWY. 3/26 W-PRM MAS/I-SUP/ KNS

obstruct the installation of trimmers for the dormer construction (see steps 3 and 8).

4 Step 2 Adjustment of aperture and installation of trimmers for roof construction If trimmers are necessary to carry the roof construction, they must be positioned in such a way that they do not obstruct the installation of trimmers for the dormer construction (see steps 3 and 8). Adjust the aperture at the sides in order to obtain an interior measurement of Wi mm (see table step 1). 4/26 W-PRM MAS/I-SUP/ KNS

Position the bottom trimmer for the dormer construction by measuring from mark (a) - see cross-section.

5 Step 3 Installation of infill battens and bottom trimmer for the dormer construction Install infill battens as shown. Draw a mark (a) on the bottom infill batten 60 mm from the back edge of the batten below the aperture in the roof surface. Position the bottom trimmer for the dormer construction by measuring from mark (a) - see cross-section. (This mark will also be used for positioning of the side framing, see step 4). The dimensions of the bottom trimmer must be approx 50 x 250 mm. 5/26 W-PRM MAS/I-SUP/ KNS

6 Step 4 Preparation and installation of side framing Provide framing according to cross-section shown above. Dimensions must be approx 50 x 100 mm. Cut framing as shown before erecting. The internal face of the framing must be flush with the internal face of the aperture Wi (see step 2). 6/26 W-PRM MAS/I-SUP/ KNS

7 Step 5 Preparation and installation of side panel Prepare two identical triangular panels from waterproof plywood. Install one of the panels on the outside of the side framing. Overall thickness of framing plus plywood must not exceed 60 mm. 7/26 W-PRM MAS/I-SUP/ KNS

Step 6 Preparation and installation of right hand side framing and

Position and adjust framing by means of the diagonal measures x and z.

and upper frame members Draw a vertical line on both uprights 86 mm

Draw two marks (1 and 2) on each upper frame member by means of the

8 Step 6 Preparation and installation of right hand side framing and panel Prepare right hand framing and install second plywood panel. Position and adjust framing by means of the diagonal measures x and z. Double unit Triple unit Wo (mm) Step 7 Markings on uprights and upper frame members Draw a vertical line on both uprights 86 mm from the front edge and extend to the upper frame member. Draw two marks (1 and 2) on each upper frame member by means of the vertical lines and the template enclosed with the adjustable support rafter EBY. 8/26 W-PRM MAS/I-SUP/ KNS

Step 8 Positioning and installation of top trimmer and installation battens Note! Install the top trimmer so that it is at right angles to the side frame.

Note the measurements A, B and Z as they are to be used for adjusting the adjustable support rafter EBY (step 10).

9 Step 8 Positioning and installation of top trimmer and installation battens Note! Install the top trimmer so that it is at right angles to the side frame. The upper edge of the trimmer must be flush with the top of the side frame and the height of the trimmer must be min 175 mm. Note the measurements A, B and Z as they are to be used for adjusting the adjustable support rafter EBY (step 10). Position two installation battens between the side frames. Position the front batten so that the distance from the front edge of the batten to mark 1 is 1426 mm as shown in the cross-section above. 9/26 W-PRM MAS/I-SUP/ KNS

Step 9 Marking for positioning of adjustable support rafter EBY Mark the bottom and top trimmer for positioning of adjustable support rafter EBY.

10 Step 9 Marking for positioning of adjustable support rafter EBY Mark the bottom and top trimmer for positioning of adjustable support rafter EBY. Double unit solutions: Measure the centre (a) of the bottom trimmer and find the centre (b) of the top trimmer by means of the diagonal measure x. Triple unit solutions: Start by finding the centre (a) and (b) as described above. Then mark for positioning of adjustable support rafter EBY 399 mm to each side of the centre on the bottom and the top trimmer. mm 10/26 W-PRM MAS/I-SUP/ KNS

Step 10 Adjustment of adjustable support rafter EBY Transfer the roof pitch Xº (by means of template) and measurements A mm, B mm and Z mm from step 8 to EBY.

Step 11 Fitting of installation brackets for adjustable support rafter EBY Fit the installation bracket supplied with the EBY on the top trimmer.

11 Step 10 Adjustment of adjustable support rafter EBY Transfer the roof pitch Xº (by means of template) and measurements A mm, B mm and Z mm from step 8 to EBY. Cut EBY. NOTE! The measurement C mm must be maximum 40 mm when cutting out the EBY. Notch the batten also if C mm is greater than 40 mm. Step 11 Fitting of installation brackets for adjustable support rafter EBY Fit the installation bracket supplied with the EBY on the top trimmer. The measurement h must be approx 136 mm but has to be adjusted so that the web of the adjustable support rafter is flush with the upper face of the installation batten. 11/26 W-PRM MAS/I-SUP/ KNS

Step 12 Installation of adjustable support rafter EBY Fix temporary batten between the two side framings with the back edge at mark 2 on the upper framing members (see section 1-1 below

Position the EBY so that the installation batten rests in the intersection between the webs (section 2-2). Fix the EBY to the bottom trimmer with screws.

12 Step 12 Installation of adjustable support rafter EBY Fix temporary batten between the two side framings with the back edge at mark 2 on the upper framing members (see section 1-1 below and step 7). Position the EBY in the installation bracket on the top trimmer and at the mark on the bottom trimmer. Position the EBY so that the installation batten rests in the intersection between the webs (section 2-2). Fix the EBY to the bottom trimmer with screws. Extend the EBY to the top level of joists and fix to batten. The batten should be securely fixed to the joists on either side of the EBY. In each single case, this detail must be supported by static calculations. Remove the temporary batten once the EBY has been fixed. 12/26 W-PRM MAS/I-SUP/ KNS

13 Step 13 Preparation of roof windows Fit seals supplied into the two window rebates to be positioned onto the EBY adjustable support rafter. Fit corner and centre fixing brackets supplied with the roof windows on the side frames opposite the EBY (a, b). Fit the brackets supplied with the flashing on the side frames facing the EBY (c, d). 13/26 W-PRM MAS/I-SUP/ KNS

Step 14 Installation of the first roof window Position temporary batten with the back edge at mark 1 (see section 1-1 below and step 7). The roof window may rest on this batten during installation.

14 Step 14 Installation of the first roof window Position temporary batten with the back edge at mark 1 (see section 1-1 below and step 7). The roof window may rest on this batten during installation. If necessary, adjust the level of the roof window by placing wedges under the corner brackets. Fix the roof window to the EBY with screws through the plastic plates. On the side opposite the EBY, fix the roof window with screws in the brackets fitted. 14/26 W-PRM MAS/I-SUP/ KNS

Step 15 Installation of the second roof window Fix the roof window to the dormer

Remove the temporary batten (d) and fit the bracket supplied between the windows (e).

Step 16 Preparation of vertical window elements VF- Remove the sash of vertical window

15 Step 15 Installation of the second roof window Fix the roof window to the dormer construction with screws in the fixing brackets in the shown order (a, b, c). Remove the temporary batten (d) and fit the bracket supplied between the windows (e). Roof window adjustment: See instructions enclosed with the roof window. Step 16 Preparation of vertical window elements VF- Remove the sash of vertical window elements VF- as shown in the installation instructions for vertical window elements VFE/VFA/VFB. 15/26 W-PRM MAS/I-SUP/ KNS

Step 17 Installation of vertical window elements Position frames of

Drill Ø 3 mm holes through top frame of vertical window elements

Then screw frames together with the screws supplied (b).

16 Step 17 Installation of vertical window elements Position frames of VF- elements up against roof windows using wedges (a). Drill Ø 3 mm holes through top frame of vertical window elements and into the bottom frame of the roof windows. Then screw frames together with the screws supplied (b). Fix the frames of the VF- elements to the adjustable support rafter EBY with screws. 16/26 W-PRM MAS/I-SUP/ KNS

Step 18 Insulation of joints and cavities Insulate

gutter (7303) supplied around the dormer

17 Step 18 Insulation of joints and cavities Insulate joints and cavities under covers. Step 19 Connection to roof underfelt Fit the underfelt collars (7039) and transverse drainage gutter (7303) supplied around the dormer construction and integrate with the underfelt in the roof construction. 17/26 W-PRM MAS/I-SUP/ KNS

Fit the bottom flashing section (7021) to the plywood side panel with aluminium screws.

18 Step 20 Fitting of bottom flashing section (7021) Before fitting the bottom flashing section (7021), fix a 20 x 20 mm triangular list below the vertical window elements. Fit the bottom flashing section (7021) to the plywood side panel with aluminium screws. Fix the bottom flashing section (7021) at the front with aluminium screws between the vertical window elements. 18/26 W-PRM MAS/I-SUP/ KNS

19 Step 21 Fitting of bottom frame cover (7329) over bottom flashing section Step 22 Positioning of side flashings (7061) against plywood side panels 19/26 W-PRM MAS/I-SUP/ KNS

Step 23 Marking and adjustment of the top side flashing (7061) Mark and

of the plywood side panel. NOTE! Observe the approx 10 mm high upstand.

nearest batten above the dormer construction.

20 Step 23 Marking and adjustment of the top side flashing (7061) Mark and cut the top side flashing (7061) so that it fits around the top corner of the plywood side panel. NOTE! Observe the approx 10 mm high upstand. Position the top side flashing (7061) allowing it to rest on the nearest batten above the dormer construction. Flatten down the middle rib and outer upstand approx 80 mm down from the top. 20/26 W-PRM MAS/I-SUP/ KNS

21 Step 24 Positioning of middle gutter (7320) and middle section (7317) between vertical window elements Step 25 Positioning of side covers (7072/7092) on vertical window elements 21/26 W-PRM MAS/I-SUP/ KNS

Step 26 Fitting of top covers on vertical

22 Step 26 Fitting of top covers on vertical window elements Trim end pieces (a) and fix covers (b). Note. These covers were removed from the vertical window elements in step 16. Step 27 Fitting of corner end caps (7317) on vertical window elements 22/26 W-PRM MAS/I-SUP/ KNS

Step 28 Fitting of securing strips (7330) for the dormer side covers Mark on Der the

elements app. 10 mm på behind the front facadelyselementerne edge for positioning ca.

Cut vertical securing strip (7330) at the top and bottom and fix with stainless

Cut securing strip (7330) to be positioned along side flashings at the top and

23 Step 28 Fitting of securing strips (7330) for the dormer side covers Mark on Der the afsættes side covers markeringer of the vertical på window sidebeklædningerne elements app. 10 mm på behind the front facadelyselementerne edge for positioning ca. of securing strips tilbage (7330). fra forkanten til placering 10 mm af klemlister. Cut vertical securing strip (7330) at the top and bottom and fix with stainless steel screws. Cut securing strip (7330) to be positioned along side flashings at the top and bottom. Position the securing strip (7330) so that it forms a sharp corner. The distance from the strip to the side flashings must be fairly even. 23/26 W-PRM MAS/I-SUP/ KNS

Step 29 Fitting of dormer side covers (7061/7081) Cut the

corner end caps (7073/7093) Fit middle section (7316) (a).

24 Step 29 Fitting of dormer side covers (7061/7081) Cut the dormer side covers (7061/7081) using a template and slide it into the securing strips. Fix the dormer side covers along the top edge with stainless steel screws. Step 30 Fitting of middle section (7316), covers and corner end caps (7073/7093) Fit middle section (7316) (a). Trim and fix covers (1.1). Note. Covers supplied with vertical window elements. Fit corner end caps (7073/7093). 24/26 W-PRM MAS/I-SUP/ KNS

Step 31 Fitting of side covers (7071/7091) on

At the bottom it may be necessary to adjust the

roof window covers See instructions enclosed

25 Step 31 Fitting of side covers (7071/7091) on roof windows Trim side covers at the top. At the bottom it may be necessary to adjust the folded edge to allow the side cover to be pressed into position. Step 32 Fitting of middle gutter (7103) and roof window covers See instructions enclosed with the roof windows. Note. Covers supplied with the roof windows. 25/26 W-PRM MAS/I-SUP/ KNS

Step 33 Fitting of top flashing section (7001) Cut top cover edges (a).

Fold the top flashing section (7001) and trim the edge so that it fits around the upturned edge

Step 34 Fitting of top flashing section extension piece (7013) in securing strip (7014) Fit

26 Step 33 Fitting of top flashing section (7001) Cut top cover edges (a). Fit top flashing section (7) (b). Fold the top flashing section (7001) and trim the edge so that it fits around the upturned edge of the top side flashing (7061) (see step 23). Step 34 Fitting of top flashing section extension piece (7013) in securing strip (7014) Fit securing strip (7014) to the top flashing section app. 70 mm from the bottom edge of the top flashing section (1). Position extension (7013) in securing strip on top flashing section and fix with clamps (2). 26/26 W-PRM MAS/I-SUP/ KNS

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