40mm Capex bars are pre drilled and come with their own fixing screws and end caps, as well as Rag 45 gasket - a flat strip of gasket 45mm wide and in length matching that of the Capex bar. The gasket is laid flat along the rafter, the sheets sit on top with small gap and the Capex bar is laid on top (see product images). Installtion tip: The Capex bar is pre drilled and supplied with fixing screws. Hand tightness only - do not overtighten the screws!.
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