A Stop end is required at each end of a lintel to prevent moisture cascading over the ends into the cavity and onto the inside wall.
The use of stopends quickly and economically introduces a lintel feature which removes the dangers that could occur with volumes of water being directed into the cavity.
Stop end Solution
Keystone Stopends are available in two standard sizes. Stop ends can be incorporated into the moulded base of the lintel by a butyl anchoring strip enabling the stop end to be secured towards the end of the lintels in the most appropriate position to suit the masonry perp joint. When fitted discharge from lintels is directed through brickwork weeps.
Why Stopends are used?
The Building Research Establishment defect action sheet (DAS98) states “If stopends are not used on cavity trays or lintels acting as cavity trays, rain water discharge particularly in cavity filled walls, may wet the inner leaf, producing dampness of internal walls.”
- Ensure the surface of the lintel is clean and dry.
- Remove protective covering of anchoring seal on bottom of stopend.
- Position to suit perp joint nearest the very ends of the lintels.