Method for retro-fit forming firestops in existing wall structur

Details Method for retro-fit forming firestops in existing wall structur Method for retro-fit forming firestops in existing wall structur

1994-07-18

1997-08-12

Friedman, Carl D.

Static structures (e.g., buildings)

Processes

Filling preformed cavity

524041, E04B 100

Patent

active

056553501

ABSTRACT:
A method for retro-fit forming firestops in existing wall structures of apartments, condominiums and other buildings. The method eliminates the need for removing entire drywall panels or strips of drywall panel in order to install the firestops required by 2516 F-2 of the uniform the building code. Access holes are cut at predetermined locations in the drywall panel and the nozzle of an insulation blowing machine is inserted into the access hole. A specially prepared loose insulation material is blown into the access holes into the open spaces that require a firewall and it forms a self supporting damn structure that fills the open spaces and adheres to surrounding structure. The plugs initially formed when cutting the access holes are replaced in their holes and taping and finished coating of the access holes is completed using standard drywall methods.

REFERENCES:
patent: 4134242 (1979-01-01), Musz et al.
patent: 4430840 (1984-02-01), Malwitz
patent: 4471591 (1984-09-01), Jamison
patent: 4829738 (1989-05-01), Moss
patent: 5365716 (1994-11-01), Munson

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