Catnic Arch Centre - Span: 475mm - Rise: 75mm

Catnic Arch Centre

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.

Material

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.

Installation Notes

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.

Note: Each length of Arch Centre will cover a structural opening with a tolerance of plus or minus 25mm. All lengths between 425mm and3175mm are available in standard 50mm increments to suit a 75mm or 150mm rise.