stuwindsurf

Thanks for the replies and thank you CPD for your detailed reply it is very much appreciated. I have measured the profile of the roof sheet and the width of the Velux windows and it should work nicely. The width of the windows is 55cm and the distance between the profiles allows for the low sections to fall either side of the windows which is perfect! What I am thinking about doing is to utilize the slate tile flashing apron, trim it down a bit in length and with some Velux ZZZ 166 corrugated flashing make my own apron. The plan is to fix the Velux ZZZ 166 corrugated flashing to the bottom of the window frame and dress over the roof panel, then fit the trimmed down slate apron over the top with a strip of 50mm x 1.5mm Butyl double sided tape between the two to stop any water being blown up between. The slate head flashing should work fine as I can get a foam filler matched to the sheet profile which I can slip in under the edge of the roof panel just above the window to keep out and wind/rain/snow etc. Then down the sides of the window I plan to fold/fabricate some 200m wide lead flashing to 90 degrees which will then tuck under the head flashing and overlap the apron flashing. Where the roofing sheets overlap the fabricated side flashing I plan to again put some Butyl double side tape to seal up the egdes to stop wind/snow etc. I'm pretty sure this should work, but if any one can see anything I have overlooked please feel free to comment! I should probably also add/fold some lips to the edges of the side flashing and sides of the apron flashing to stop any water creeping out to the sides?

Hi, I hope you don't mind me hijacking this thread but I am about to fit some velux windows in some box profile roof sheeting and have been struggling to find any info ref install until I came across this post. I wonder if you can help/advise, I am building a new workshop and the roof construction is going to be 12mm OSB board over roof timbers, then a layer of breathable felt finished with box profile metal sheets 34/1000 0.7mm thick. I have 3 x older style velux windows to install GGL C02 which came with slate flashing kits. I have been in touch with velux to ask what flashing kits I need for the above mentioned roof sheet and they have advised me to either adapt their EDW kit or using the ZWC trim kit (which I already have as part of the slate flashing kit) and special head trim 606189CO, then manufacture my own flashing on site. Although having successfuly fiitted a couple of Velux windows about 20 years ago, I am unsure how to manufacture my own flashing. Can I ask did you use an off the shelf flashing kit for the quoted install? If so could you advise which kit you used? I can pretty much space the velux windows where I like, so I should be able place them to line up with the correct edge of the profiled sheets. Do you think I would be best to get the flat section between the profiles lined up with the edges of the velux? Hopefully I have attached a drawing of the sheet profile... I hope you can help! Many thanks, Stuart