Fassa Rinzaffo 720 - 3.5 Natural Hydraulic Lime - Biological Undercoat

£14.95 excl.VAT
£17.94 incl.VAT
Shipping calculated at checkout.

Fassa Rinzaffo 720 - 3.5 Natural Hydraulic Lime is used as an undercoat to restore damp masonry, to promote adhesion between the masonry and the plaster INTONACO 700 or INTONACO MACROPOROSO 717, by enhancing the anti-saline action of the latter.

Sulphate-Resistant Natural Hydraulic Lime used as an undercoat/splatter coat.


30 kg Bag @ 10mm thick covers approx. 3m2

30 kg Bag @ 3 - 4mm thick covers approx. 7.5m2

Approx. 13kg/m2 for 10mm thickness


  • Specifically for historic preservation
  • Masonry subject to rising damp
  • Adhesion primer on all masonry substrates
  • Undercoat for renovating damp masonry
  • Undercoat for salt-laden masonry

Benefits & Features

  • Dehumidifying, salt-absorbing
  • Sulphate-resistant
  • Application by hand or with machine


The surfaces being plastered must be intact, clean and free from salt efflorescence.  Any existing old plaster must be totally removed to at least one metre above the level where the damp is visible.  Wash with clean water & brush off several times.  Any excessive protrusions must be removed, making sure the surface is level.  Any parts that are loose or coming loose must be removed and repaired.

Only one layer should be applied, with total coverage of the surface being treated, to a maximum thickness of 4 - 5mm

The surface must not be smoothed off after application.