Wandanker

Wandanker is a term used in construction to describe a device that creates a secure anchoring point in a wall to support loads. The word is of German origin; in English, the equivalent terms include wall anchor, wall plug, masonry anchor, or expansion anchor. Wandankers are used in both interior and exterior walls and may be made of metal or plastic. They work by gripping the substrate or by expanding inside a drilled hole to resist withdrawal and shear forces.

Common types include mechanical anchors for masonry, such as expansion or wedge anchors and sleeve anchors; hollow-wall anchors designed for drywall or plaster, including plastic expansion anchors and self-drilling anchors; toggle bolts for hollow sections; and chemical anchors that use adhesive resin to bond the fastener to the wall. Selection depends on substrate (concrete, brick, plaster, drywall), load type, and environmental exposure. Corrosion-resistant variants are used outdoors or in damp environments.

Installation considerations: determine substrate and load, select appropriate size and type, and drill the correct hole diameter. Maintain minimum edge distances and spacing between anchors to preserve wall integrity. Use proper tools and follow manufacturer torque guidance to avoid over-tightening or anchor failure. For safety, comply with local codes and inspect installed anchors regularly.

Applications: Wandanker devices are used to mount shelves, cabinetry, electrical boxes, mirrors, handrails, and other fixtures. In retrofit work, walls with hollow spaces require anchors designed for hollow sections. Maintenance involves periodically checking for loose anchors, corrosion, or damage, and replacing as needed.