Anchor hole cleaning guides

Practical guides on getting a drilled masonry hole clean before a chemical or mechanical anchor goes in. Each one works from the manufacturers' own data sheets and links to them.

• How to clean a drilled hole before a chemical anchor

  The common cleaning pattern, where a data sheet asks for something different, and which nozzle fits each drilled hole size.

• Why standard vacuum nozzles fail at cleaning anchor holes

  A floor or crevice tool cannot get inside an 8 to 16 mm drilled hole, so it only takes dust from the mouth. What that leaves behind and what a nozzle sized to the hole does differently.

• Chemical vs mechanical anchors: how hole cleaning differs

  Chemical anchors rely on resin bonding to the hole wall, mechanical anchors on reaching full embedment. How the cleaning steps in the Ramset and Hilti data sheets differ between the two.

• What anchor data sheets say about hole cleaning

  The hole cleaning steps in the Ramset TruBolt, AnkaScrew, DynaBolt Plus, Ramset chemical anchoring and Hilti HIT-HY 200 data sheets, side by side, with links to each document.

For the step by step cleaning pattern and the nozzle size chart, see the hole cleaning guide. To match a nozzle to your vacuum, see compatibility. Quick answers are in the help centre.