The auxiliary rafter XR_ enables combining two windows horizontally in B2/1 combination with a minimum distance between the windows reaching 18mm or more –100mm. The application of the auxiliary rafter, ensures more natural light in the room and it is less time consuming when fitting a combination of windows. The auxiliary rafter is made of the same material as window frames, constituting an aesthetically pleasing element joining the windows without the traditional cardboard-plaster structure. The rafter is available in two colours, thus it can be easily matched with the colour of the windows used.
The auxiliary rafters are available in the following lengths:
The selection of the rafter length depends on:
When using a narrower rafter (18mm), on the outside, the windows are connected with a special flashing EZV-A 18 DUO for corrugated roofing materials or ESV18 DUO for flat roofing materials. It is a specially prepared solution to be used with the auxiliary rafter 18 mm. In the top and bottom section, the DUO flashing has a common element connecting the two windows together.
In the case of the auxiliary rafter 100mm thick, there are used standard flashing for combinations, e.g.: KZV-1-P or KZV-3-P.
The window combination with the auxiliary rafter, (18mm, 100mm), makes it possible to insulate around the windows frame with the use of an insulation set XDP or sheep wool tress XWW.