The Corodrain A Type Valley Trough is a narrow valley trough for use with single lap tiles in limited applications. There is a standard (type:HA) and heavy duty (type:AX) option. The valleys incorporate a 35mm sanded strip for the mortar adhesion. Application Suitable for us...Read More
The Corodrain A Type Valley Trough is a narrow valley trough for use with single lap tiles in limited applications. There is a standard (type:HA) and heavy duty (type:AX) option. The valleys incorporate a 35mm sanded strip for the mortar adhesion.
Suitable for use on roofs with pitches from 22.5° to 49°.
Can accommodate a maximum difference between two rafter pitches of 10°.
Designed for use with interlocking tiles, can also be used with natural and manufactured slate.
Length: 1.8m.
Width: 360mm.
Weight: 1.83kg per m2.
Thickness: 1.3mm.
Colour: grey / blue.
Material: GRP - high quality unfilled polyester resin with glass fibre reinforcement.
| Roof area less than 25m2 |
Roof area 25m2 to 100m2 | ||||
| Rafter Pitch | Valley Type | Max. Valley Length |
Valley Type | Max. Valley Length | Minimum Lap Length |
| 17.5-22° | B / D | 7m | - | - | 350mm |
| 22.5-29° | A / B / D | 7m | B / D | 14.5m | 300mm |
| 30-34° | A / B / D | 7.5m | B / D | 15m | 200mm |
| 35-39° | A / B / D | 7.5m | B / D | 15.5m | 200mm |
| 40-44° | A / B / D | 8m | B / D | 16.5m | 150mm |
| 45-49° | A / B / D | 8.5m | B / D | 17m | 150mm |
| 50-55° | B / D | 9m | B / D | 18.5m | 150mm |
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