Plasterboard Finishes - Back-Blocking Adhesive | Knauf AU

Back-Blocking Adhesive

Back-Blocking Adhesive is a plaster-based setting type compound specially formulated for back-blocking ceiling joints or wall joints. It reinforces plasterboard joints and minimises cracking and peaking that results from building movement.

Back-blocking is a mandatory fixing practice described in AS/NZS 2589:2007 Gypsum linings – Application and finishing.

For more information, view our resources below.

Physical Properties
  • Colour: Yellow 
  • Working time: Setting type – Approx. 120 mins 
  • Packaging: 20kg bag 
  • VOC: Less than 50g per litre
  • Specially formulated for back-blocking ceiling and wall joints
Features and Benefits
  • Long working time
  • Mixes easily to a creamy, lump-free gauge
  • Excellent wet tack
  • Excellent adhesion and water retention
  • Yellow pigmentation