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Pointing of masonry joints

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POINTING

The rehabilitation of exposed masonry made of brick or natural stone requires often a renewal of the whole joints to prevent a further humidity of the wall.

Verfugen von Mauerwerksfugen 
Pointing of masonry joints

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Application range

  • Restoration or renovation of masonry joints
  • Joint renovation / pointing of natural stones built in
  • Gun pointing for large joints widths and great joint depths
  • Deep-hole filling

Material selection

The selection of the material is mainly determined by the existing material. Mortars are composed of mineral binders and admixtures if necessary, e. g.:
  • Lime mortar
  • Dolomitic lime mortar
  • Lime cement mortar
  • Roman cement mortar
  • Trass cement mortar

Note: Jointing mortar has to be machine-compatible

Examples of application

  • Masonry joints
  • Floor joints
 

Advantages

  • Clean working ensured
  • Complete filling of joints
  • Delivery rate and speed adjustable

Procedure

  • If a repair is not possible, remove the joint material completely (z. B. AS175 Brick and Mortar Saw, no. 40020)
  • Clean joint flanks of dust and lose particles, roughen them if necessary
  • Pre-wetting using water of drinking water quality
  • Place mortar in the joints
  • Surface treatment
  • After treatment of the joints
 
Information on joint repair
WTA Merkblatt “Natursteinrestaurierung„ 3-2, Edition 10.2016 D, Information on natural stone repair: WTA Merkblatt: “Erhaltung und Instandsetzung von Mauerwerk„ E-7-1, Edition 02.2018/D (yellow print)
 
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