KAWA R715 Screw Fixing

RIDGE CAPPING (OPTIONAL NOTCHING)

FLASHING

KAWA R715 WALL CLADDING

SCREWS

KAWA R715 ROOF SHEET

INSULATION WOOL

INSULATION WOOL

ROOF PURLIN

HEXAGONAL GALVANISED CHICKEN WIRE MESH

An economical 1˚ roof with bold and deep corrugations for aesthetics, strength and heavy rains. Ideally suited for use at power stations or alternatively as internal roof decking for some double skin roof systems.

RIDGE CAPPING (OPTIONAL NOTCHING)

FLASHING

KAWA R715 WALL CLADDING

SCREWS

KAWA R715 ROOF SHEET

INSULATION WOOL

INSULATION WOOL

ROOF PURLIN

HEXAGONAL GALVANISED CHICKEN WIRE MESH

An economical 1˚ roof with bold and deep corrugations for aesthetics, strength and heavy rains. Ideally suited for use at power stations or alternatively as internal roof decking for some double skin roof systems.

Installation Method

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  • Factory mutual (FM) approved.
  • Capable of being used as a roof panel on a 1˚ roof slope.
  • Quick and easy to install.
  • Available in convex and concave crimped curved designs.
  • Bold and deep corrugations contemporary roof and wall cladding design.

  • Factory mutual (FM) approved.
  • Capable of being used as a roof panel on a 1˚ roof slope.
  • Quick and easy to install.
  • Available in convex and concave crimped curved designs.
  • Bold and deep corrugations contemporary roof and wall cladding design.

Roof Pitch

The minimum recommended roof pitch for the KAWA R715 profile is 1˚. 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.

Stop Ending & Lipping

Stop ending sheets prevent water from entering the building through the flashing or capping. It is done by a turn-up tool, turning up the tray between crests at the ridge end of the sheet (Fig.1). Lipping is a process whereby a turn-down tool is used to turn down the tray between crests at the eave end of the sheet (Fig.2).

Roof Pitch

The minimum recommended roof pitch for the KAWA R715 profile is 1˚. 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.

Stop Ending & Lipping

Stop ending sheets prevent water from entering the building through the flashing or capping. It is done by a turn-up tool, turning up the tray between crests at the ridge end of the sheet (Fig.1). Lipping is a process whereby a turn-down tool is used to turn down the tray between crests at the eave end of the sheet (Fig.2).

KAWA R715 Valley Fastening as a Wall Cladding

KAWA R715 Valley Fastening as a Wall Cladding

Convex and Concave Roof

The KAWA R715 Crimped Curved Convex and Concave profile adds beauty and functionality to the building envelope with advantages as
follows:-

  • Fewer structural supports required for fascias and roofs.
  • Aesthetically attractive exterior finish with simple installation.
  • Reduced number of flashings and cappings.

Ensure that the sheets are lifted onto the roof the right way up with the male and female ribs in the desired direction, otherwise sheets will have to be orientated during installation.

Where a few sheets are required to cover the whole length of the roof due to handling or transport considerations, installation shall start from the bottom to the top before moving on to the next run of roof. At the end laps, a minimum of 250 mm end lap is required for a 5˚ roof pitch and below, and a minimum of 200 mm end lap is required for a roof pitch exceeding 5˚. To ensure watertightness, apply a good sealant to the end lap.

For the KAWA R715 Crimped Curved profile, valley fixing of the sheet is recommended only on the fascia purlin. For the rest of the purlins, screws should be fixed on the crests of the ribs into the purlins below.

Diagram showing the radius of curvature of the KAWA R715 crimped curved profile

Typical assembly drawing of the KAWA R715 crimped curved profile

Convex and Concave Roof

The KAWA R715 Crimped Curved Convex and Concave profile adds beauty and functionality to the building envelope with advantages as
follows:-

  • Fewer structural supports required for fascias and roofs.
  • Aesthetically attractive exterior finish with simple installation.
  • Reduced number of flashings and cappings.

Ensure that the sheets are lifted onto the roof the right way up with the male and female ribs in the desired direction, otherwise sheets will have to be orientated during installation.

Where a few sheets are required to cover the whole length of the roof due to handling or transport considerations, installation shall start from the bottom to the top before moving on to the next run of roof. At the end laps, a minimum of 250 mm end lap is required for a 5˚ roof pitch and below, and a minimum of 200 mm end lap is required for a roof pitch exceeding 5˚. To ensure watertightness, apply a good sealant to the end lap.

For the KAWA R715 Crimped Curved profile, valley fixing of the sheet is recommended only on the fascia purlin. For the rest of the purlins, screws should be fixed on the crests of the ribs into the purlins below.

Diagram showing the radius of curvature of the KAWA R715 crimped curved profile

Typical assembly drawing of the KAWA R715 crimped curved profile

Projects Reference

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