“Q. How does the weatherproofing system work?”

A. Rubber weatherproofing gaskets sit on top of the hips, rafters and eaves beams of the lantern, with the glass sitting on top of them. There is an aluminium capping system which then sits on top of the glass, with more rubber gaskets, and is screwed down to hold the glass and capping in place. This twin-gasket system ensures that, when properly installed, any water which gets past the outer gaskets falls onto the inner gaskets and drains out at the bottom of the roof pitch, meaning that it is almost impossible for the roof to leak.