If the roof is ready and no trimming is needed, it should take no more than five minutes as window and flashing are integrated. Type of roof and need for trimming may, however, make the process more time-consuming.

You install FENSTRO using the straps on the inside of the sash. For more details, check the installation instructions on the packaging or view our streaming video installation sequence on this site.

Yes. You simply remove the foam gaskets and bend down the outer edge of the flashing. For further information, please view streaming video on installation in slate roofing.

Yes, but you may need to disregard the straps and fasten the product a different way.

Yes. The straps are very flexible and can be twisted for mounting on battens also. FENSTRO is a light window so this is generally not a problem – but make a detailed assessment of the strength of the battens before installing.

FENSTRO may be installed in roofing with pitch up 60 degrees.

FENSTRO can be installed in roofs where the roof material has a maximum height of 90 mm.

No. You change the position of the hinges from the top of the window to the side. Further, you simply screw the handle off from its default position on the bottom part of the sash and move it onto the side where pre-drilled holes indicate the new position. Also, view the streaming video on this subject on the site.

FENSTRO comes with a two-year EU reclamation right for product defects. If there are defects or problems with the product you have bought, contact the retailer where you have bought the product.

Generally, we do not recommend it.