Fitting velux roof window in my slate roof

GAZB

My house is over 100 years old , im in the process of converting my loft , the problem is my roof is slate and has no felt under the slates , im a bit worried it may leak if I start messing about fitting this type of window , is there any special fitting kit you can buy or is it just a case of felting around just near the velux roof window rather than under all the other roof slates , I dont want to fit this plaster it all up and then it start leaking

Gloomendoom

Just buy the matching slate roof flashing kit for the size of Velux you are going to fit.