Mulling and sealing system for compound fenestration units

摘要

A method is provided for coupling individual fenestration units together and sealing the gaps between them so as to form a sealed compound fenestration unit. The individual fenestration units include mating channels and tabs, or other connectors, that are attached to outside frame surfaces of the individual fenestration units. When the connectors are coupled together, they attach the frames of the individual fenestration units securely together in such a way that gaps are formed between the units along their joined frame surfaces. The gaps are sealed by resilient sealing strips that are configured to be inserted into the gaps, and that are formed with seals that bear against the walls of the gaps to form impervious moisture seals.

主权项

1. A method of joining first and second fenestration units with a side of the first fenestration unit juxtaposed a side of the second fenestration unit, the method comprising the steps of:
(a) attaching a pair of spaced apart first coupling members to the side of the first fenestration unit, with at least two alignment tabs of each first coupling member extending into a channel in the side of the first fenestration unit; (b) attaching a pair of spaced apart second coupling members to the side of the second fenestration unit, with at least two alignment tabs of each second coupling member extending into a channel in the side of the second fenestration unit; (c) juxtaposing the side of the first fenestration unit with the side of the second fenestration unit with the first coupling members offset from the second coupling members in a direction along the juxtaposed sides of the fenestration units; (d) moving the juxtaposed sides of the fenestration units relative to each other to cause the pair of spaced apart first coupling members to approach the pair of spaced apart second coupling members; and (e) continuing to move the juxtaposed sides of the fenestration units relative to each to cause the first coupling members to slide into coupled together engagement with the second coupling members thereby joining the first and second fenestration units together.