Roof & Foundation Conditions

Tenting

Description/Cause:  Tenting can cause damage to the roof membrane and should be addressed immediately before the area breaks open allowing water entry into the structure.  Tenting is normally a cause of dry spots underneath an installed flashing or penetration embedded fabric.

Damage Created by Condition:  Tented section may rupture allowing water entry into the structure.

Suggested Maintenance/Products Required:  Existing tented areas should be cut out and allow to dry, followed by an application of mastic, reinforcement fabric and mastic.  Depending on the roof system, Karnak #19 or #19 Ultra Rubberized flashing cement or Karnak Karna-flex may be used.  Apply Karna-Flex (502 Seam Sealer) at an average thickness of 1/16” to completely cover the polyester face of the tape and feather out.  Or, using Karnak Resat-Mat, apply Karna-Flex (502 Seam Sealer) or Karna-Flex WB at an average thickness of 1/16” to completely cover the seam and immediately embed one layer of Resat-Mat covering it with another application of Karna-Flex (502 Seam Sealer) or Karna-Flex WB making sure to smooth the fabric out and it is completely and cover.

*502 Karna-Flex Seam Sealer is use above to illustrate the proper application technique for repairing a Tenting but the appropriate product to be used would depend on the roofing substrate.


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