KAWA R670 Clip Fixing
KAWA R760 Wall Clading
RIDGE CAPPING (OPTIONAL NOTCHING)
FLASHING
ROOF PURLIN
KAWA R670 FIXING CLIP
KAWA R670 ROOF SHEET
The KAWA R670 is a high rib roof profile especially ideal for heavy rainfall intensity areas. With its wide tray configurations, water is safely dispersed of from the roof surface area even at a minimum roof pitch of 1°.
KAWA R760 Wall Clading
RIDGE CAPPING (OPTIONAL NOTCHING)
FLASHING
ROOF PURLIN
KAWA R670 FIXING CLIP
KAWA R670 ROOF SHEET
The KAWA R670 is a high rib roof profile especially ideal for heavy rainfall intensity areas. With its wide tray configurations, water is safely dispersed of from the roof surface area even at a minimum roof pitch of 1°.
Installation Method
- It is a non-puncturing boltless roof. This unique fastening system greatly reduces the risk of leakage at fasteners of conventional systems.
- High ribbed profile resulting in a stronger roof spanning wider purlin centres.
- A lower pitched roof, effectively reducing fascia usage.
- Wider profile, therefore increasing installation speed.
- It is a non-puncturing boltless roof. This unique fastening system greatly reduces the risk of leakage at fasteners of conventional systems.
- High ribbed profile resulting in a stronger roof spanning wider purlin centres.
- A lower pitched roof, effectively reducing fascia usage.
- Wider profile, therefore increasing installation speed.
Roof Pitch
Owing to its unique high rib design, the KAWA R670 profile can be installed
on a roof pitch as low as 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 using 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). Both these operations can be carried out before or after installation of the sheets.
Roof Pitch
Owing to its unique high rib design, the KAWA R670 profile can be installed
on a roof pitch as low as 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 using 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). Both these operations can be carried out before or after installation of the sheets.
Crimped Curved Roof
The KAWA R670 Crimped Curved 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 R670 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 which are supported by fixing clips.
Diagram showing the radius of curvature of the KAWA R670 crimped curved profile
Typical assembly drawing of the KAWA R670 crimped curved profile
KAWA R670 Accessories
KAWA R670 Accessories
KAWA R670 FIXING CLIP
