KAWA R500 Lockseam

KAWA R600 WALL CLADDING

KAWA R500 LOCKSEAM ROOF SHEET

FLASHING

APRON (OPTIONAL)

END STOP

ROOF PURLIN

S-CLIP

KAWA R500 LOCKSEAM ROOF CONNECTOR

EAVE STOP (OPTIONAL)

RIDGE CAPPING

The KAWA R500 Lockseam is the state-of-the-art trapezoidal roof concealed fixing system. The extremely deep corrugation coupled with its locked and seamed sidelap totally eliminates rainwater entry and any fear of wind uplift.

KAWA R600 WALL CLADDING

KAWA R500 LOCKSEAM ROOF SHEET

FLASHING

APRON (OPTIONAL)

END STOP

ROOF PURLIN

S-CLIP

KAWA R500 LOCKSEAM ROOF CONNECTOR

EAVE STOP (OPTIONAL)

RIDGE CAPPING

The KAWA R500 Lockseam is the state-of-the-art trapezoidal roof concealed fixing system. The extremely deep corrugation coupled with its locked and seamed sidelap totally eliminates rainwater entry and any fear of wind uplift.

Installation Method

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  • Non-piercing of the roof ensures 100% watertightness.
  • A real roofing beauty. Its concealed fixing system results in a roof with clean, straight and rigid lines, uninterrupted by protruding screws or bolts.
  • The unique lock and seam fastening process by a robotic seamer holds the roof sheets tightly against uplift or suction forces of strong winds.
  • The profile’s strikingly bold and deep corrugation makes it an extremely structurally strong roof requiring fewer purlins, an almost flat roof pitch with a small fascia, all of which contribute to substantial savings in building costs.




  • Non-piercing of the roof ensures 100% watertightness.
  • A real roofing beauty. Its concealed fixing system results in a roof with clean, straight and rigid lines, uninterrupted by protruding screws or bolts.
  • The unique lock and seam fastening process by a robotic seamer holds the roof sheets tightly against uplift or suction forces of strong winds.
  • The profile’s strikingly bold and deep corrugation makes it an extremely structurally strong roof requiring fewer purlins, an almost flat roof pitch with a small fascia, all of which contribute to substantial savings in building costs.

Roof Pitch

Owing to its unique deep corrugations, the KAWA R500 Lockseam profile can be installed on a roof pitch as low as 1˚, making it virtually flat. However, it is recommended that a roof pitch of 2˚ be considered during designing to avoid silt accumulation due to reduced water velocity and possible ponding as a result of uneven purlins.

End Laps

Should end laps be inevitable, have a minimum of 250 mm end lap for a 5˚ roof pitch and below, and a minimum 200 mm end lap for a roof pitch exceeding 5˚. Ensure watertightness by applying a good sealant to the end lap.

End Stops

The high ribs and trapezoidal shape of the KAWA R500 Lockseam profile require usage of end stops on the ridge side to prevent rainwater being driven into the building. The end stops are pre-lined with sealants before being fastened to the sheets by a snapping tool.

KAWA R500 Lockseam Accessories

KAWA R500 Lockseam Accessories

Roof Pitch

Owing to its unique deep corrugations, the KAWA R500 Lockseam profile can be installed on a roof pitch as low as 1˚, making it virtually flat. However, it is recommended that a roof pitch of 2˚ be considered during designing to avoid silt accumulation due to reduced water velocity and possible ponding as a result of uneven purlins.

End Laps

Should end laps be inevitable, have a minimum of 250 mm end lap for a 5˚ roof pitch and below, and a minimum 200 mm end lap for a roof pitch exceeding 5˚. Ensure watertightness by applying a good sealant to the end lap.

End Stops

The high ribs and trapezoidal shape of the KAWA R500 Lockseam profile require usage of end stops on the ridge side to prevent rainwater being driven into the building. The end stops are pre-lined with sealants before being fastened to the sheets by a snapping tool.

Projects Reference

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