Invention Grant
- Patent Title: High density polyurethane and polyisocyanurate construction boards and composite boards
- Patent Title (中): 高密度聚氨酯和聚异氰脲酸酯建筑板和复合板
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Application No.: US11343466Application Date: 2006-01-30
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Publication No.: US07972688B2Publication Date: 2011-07-05
- Inventor: John B. Letts , Gregory A. Brandt
- Applicant: John B. Letts , Gregory A. Brandt
- Agent Sarah M. Jabbari; Arthur M. Reginelli
- Main IPC: B32B3/00
- IPC: B32B3/00
Abstract:
A covered low-slope or flat roof comprising (a) a roof deck, (b) an optional insulation board including a polyurethane or polyisocyanurate cellular structure having a density that is less than 2.5 pounds per cubic foot, (c) a coverboard including a polyurethane or polyisocyanurate cellular structure having a density greater than about 2.5 pounds per cubic foot, and (d) a membrane.
Public/Granted literature
- US20060179749A1 High density polyurethane and polyisocyanurate construction boards and composite boards Public/Granted day:2006-08-17
Information query
