The multi-function 1143 cavity wall weep designed for cavity ventilation and reliable discharge of water from inside cavity walls. This could be over external lintels or wherever a cavity tray system is installed.

The 1144 cavity wall weep extension offers a +50mm extension and connects directly onto the 1143 cavity wall weep.

For use in any situation where water must be discharged from an external wall, including:

• At ground floor slab level
• Within cavity tray systems
• Over external lintels
• Where a cavity must be ventilated
• On external walls – 100mm or more in thickness – built from brick, block, or stone