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Drill Bits Engineered for Rainscreen Façade Installation

Selecting the correct drill bit for rainscreen cladding isn't simply a matter of matching diameter — the bit geometry, material and cutting edge need to be matched to the specific substrate. Using an incorrect bit type risks panel cracking, loss of hole tolerance and fixing failure, all of which compromise the integrity of the façade system.

Solid Carbide Drill Bits for Fibre Cement Cladding

Fibre cement rainscreen panels — including EQUITONE®, Cembrit, fibreC and Ceramapanel — require a solid carbide drill bit. HSS bits are not suitable for fibre cement: they wear rapidly, lose dimensional accuracy and can crack the panel face under load. Our carbide drill bits feature a robust tungsten carbide body with a geometry optimised for clean entry and exit, producing consistent apertures with no panel damage across the full diameter range from 4.9mm to 11mm.

Long Series HSS Drill Bits for Aluminium and Timber Subframes

For drilling aluminium carrier systems and timber subframe structures, long series ground HSS drill bits deliver the accuracy and reach needed for high-volume, repetitive installation work. Available from 6mm to 13mm diameter and supplied in packs of five, they are the correct tool for subframe pilot and through-holes where a carbide bit is not required.

HSS Step Drill Bits for Combined Subframe and Panel Drilling

Where programme efficiency is a priority, step drill bits allow installers to drill through aluminium subframe and cladding panel in a single operation, eliminating bit changes and reducing the risk of positional shift between layers.

Centralising Tool Replacement Drill Bits

Mainline's centralising drilling tools are designed to ensure sliding point holes are drilled concentrically during panel installation — a precision requirement across all major façade manufacturer systems. Replacement drill bits are stocked across the full size range for rapid dispatch, keeping your centralising tools operational on site.

All drill bits are available for individual order or as part of Mainline's complete façade installation kits, supplied alongside colour-matched screws, rivets and setting accessories.