A PVC-u arch unit for use over openings in external cavity walls – traditional and timber frame – providing permanent centring for brick arch construction.
Allows easy construction of segmental arches. Includes integral weep vent.
Extruded from PVC-u for greater UV stability Catnic Lintel Arch Centres are designed to weather in accordance with the PVC-u windows. The design incorporates built-in weep vents for discharging the wind-driven rain that penetrates the external skin of a cavity wall.
i) Do not use damaged Arch Centres.
ii) Remove the Arch Centre from its protective wrapping.
iii) Check that the Arch Centre is correct for application (refer to the lintel specification).
iv) Ensure the Arch Centre and lintel mounting surfaces are clean and dry.
v) Locate the unit centrally over the opening to determine the position on the lintel. The front drip section should be trimmed off at the bearing end to allow for thin mortar joints and to enhance the appearance.
vi) Locate the unit on the lintel at position previously determined, ensuring a tight fit to the edge of lintel toe.
|Arch Centre Code||Arch Centre Span (mm)||Rise (mm)||Opening Sizes (mm)|