Patent ID: 11920339
Assignee: COLUMBIA INSURANCE COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 23:
24. The method of claim 1, wherein said step of installing the fire retardant sheathing comprises positioning first and second Type X gypsum panels of the fire retardant sheathing, the first and second Type X gypsum panels each being 5/8-inch-thick, the first Type X gypsum panel having a front face and an opposite rear face, the second Type X gypsum panel having a front face and an opposite rear face, the rear face of the first Type X gypsum panel forming the rear face of the fire retardant sheathing and the front face of the second Type X gypsum panel forming a front face of the fire retardant sheathing, the rear face of the second Type X panel being in contact with the front face of the first Type X gypsum panel.