Butly Sealant 8m

Butyl sealant, 6mm diameter for pre 1996 velux windows, this comes on a 8m roll, enough for at least 2 windows.

Ideal for Velux roof windows with codes GGL/GHL - 1 to 9, these older windows only used one thickness of butyl, newer windows used 2 so you need the velux butyl sealant kit for them.