Leaf deflecting cover device for a rain gutter
Leaf free gutter and downpipe rain head
Lifetime rain gutter
Light diffusing apparatus
Light pipe
Lightweight, self-ballasting photovoltaic roofing assembly
Liquid dispersing plate
Liquid dispersing screen
Liquid distributor
Load sensitive snow barrier device
Locking device for a rooftop support
Locking device for membrane fastener apparatus
Low-flammability shingle
Low-profile miter apparatus and system
Lower seal for glazed roofs or similar constructions