How to choose
Choose a fixing system from the real substrate, board thickness, fixture and load direction.
Quick answer
Do not choose a fixing from the item name alone. Confirm what is behind the finish, the board or masonry condition, the fixture-hole geometry and the manufacturer load data for that exact installation.
Scope: Confirm substrate, load direction, edge distances and maker data; safety-critical or structural fixings need competent design.
Four options to compare
Best for: Brick, concrete or suitable block that can provide full embedment.
Main trade-off: Plaster depth, weak block or damaged mortar can invalidate an assumed solid fixing.
Must check: Exact substrate, drill diameter, embedment, screw range and edge distance.
Best for: Fixtures that can be positioned into a sound timber or metal support.
Main trade-off: The desired position may not align and hidden services remain a separate risk.
Must check: Stud identity, screw type, fixture thickness and service checks.
Best for: Appropriate lighter fixtures where no support is available and the board is sound.
Main trade-off: Board thickness, rear clearance, installation tool and load direction strongly change capacity.
Must check: Board thickness, cavity depth, fixing length and manufacturer table.
Best for: Heavy, cantilevered, valuable or safety-critical fixtures, or walls you cannot identify confidently.
Main trade-off: May require opening up, relocating or competent assessment.
Must check: Stop before drilling; identify the construction and obtain a designed fixing where needed.
Plug, screw, hole, substrate and fixture must work together. A familiar plug colour or headline load is not enough.
A fixing can be mechanically suitable while the drilling position is unsafe. Use plans, isolation, detector limitations and other checks; a clear detector result is not proof that a wall is clear.
What this guide cannot check
Do not claim universal safety, guaranteed suitability, professional approval or permission to undertake protected work. Check current instructions, exact identifiers and local circumstances before acting.