Claims
- 1. A liquid tight field splice comprising a first edge of a first membrane sheet overlapped onto a second edge of a second membrane sheet;
- a bead of sealant between said overlapped edges lying along the entire length of said overlapped edges, said sealant having a sag less than about 1 inch;
- a thin layer of a thermoset adhesive between said overlapped edges, said layer being at least about 3 inches wide and having a thickness;
- said bead of sealant having thickness effective to bridge minor gaps in said field splice wherein said bead of sealant has a thickness at least 5 times the thickness of said layer of adhesive.
- 2. The field splice claimed in claim 1 wherein said bead of sealant is at an innermost portion of said field splice.
- 3. The field splice claimed in claim 1 wherein said first edge of said first membrane and said second edge of said membrane are primed edges.
- 4. The field splice claimed in claim 1 further comprising a lap sealant at an exterior portion of said field splice.
- 5. The field splice claimed in claim 4 wherein said bead of sealant is a silicone sealant.
- 6. The field splice claimed in claim 1 wherein said adhesive layer is a butyl adhesive.
- 7. The field splice claimed in claim 1 wherein said adhesive layer is a splicing tape.
- 8. The field splice claimed in claim 1 wherein said bead of sealant is an adhesive.
- 9. The field splice claimed in claim 8 wherein said bead of sealant is a crosslinking adhesive.
- 10. The field splice claimed in claim 1 wherein said bead of sealant is a 100% solid sealant.
- 11. The field splice claimed in claim 1 wherein said bead of sealant is adhered to said thin layer of adhesive.
- 12. The field splice claimed in claim 1 wherein said bead of sealant develops a peel strength of at least 4 pounds per linear foot at 20.degree. C.
- 13. The liquid tight field splice claimed in claim 1 wherein said thin layer of a thermoset adhesive has a thickness of from about 8 to about 20 mils.
- 14. The liquid tight field splice claimed in claim 13 wherein said adhesive layer is less than about 6 inches wide.
Parent Case Info
This application is a continuation of application Ser. No. 018,452 filed Feb. 25, 1987, now abandoned.
US Referenced Citations (21)
Foreign Referenced Citations (1)
Number |
Date |
Country |
195614 |
Dec 1982 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
18452 |
Feb 1987 |
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