Dehumidifying structural, reinforcing, grey cement plaster

Code: RNF.0199

Components: 1

Appearance: Powder

A composite mortar that is fibre-reinforced, consolidating, dehumidifying, grey in colour and utilised for the structural restoration of crumbling old or monumental masonry. It contains no substances that are potentially harmful to masonry and is composed of NHL 3.5 natural hydraulic lime and hydraulic binders free from soluble salts, along with silicas with pozzolanic activity, selected siliceous-calcareous aggregates, specific shrinkage-reducing agents and resistant alkaline READYMESH fibres that confer high flex-traction whilst increasing the performance of the mortar’s fracture energy. In conjunction with ARMAGLASS STRUCTURA fibreglass mesh, it is ideal for the structural restoration of old walls or crumbling constructions.

Linee di appartenenza

Certification obtained and Standards

Products and systems for the protection and repair of concrete structures - Structural and non-structural repair

EN 1504-3

Products and systems for the protection and repair of concrete structures - Structural and non-structural repair

Specification for Mortar for Masonry - Mortars for renovations (R)

EN 998-1

Specification for Mortar for Masonry - Mortars for renovations (R)

General characteristics


Pot-life: 60 min


Max. recommended thickness: 40 mm




Use wearing protective gloves


Temperature of use: +5 / +35 °C


Mix with water: 14 %


Maximum diameter of aggregate: 1.5 mm


Min. recommended thickness: 20 mm


Shelf-life: 12 months

Technical specifications

Flexural strength

> 4 N/mm²


11 μ

Bonding force

> 0.9 N/mm²

Static elastic modulus

11700 N/mm²

Thermal conductivity

0.30 W/m*K

Reaction to fire

A1 _

Water/binder ratio

0.45 _

Compressive strength

> 20 N/mm²


> 12 _


1700 kg/m³

Capillary absorption

0.14 kg•h^0.5/m²

Available colours

- Gray

Packaging and dimensions

- Bag 25 kg

- Pallet: 50 x (Bag 25 kg)


Unisan does not contain substances potentially harmful to masonry and is characterized by balanced mechanical performance which is particularly favorable for consolidation interventions in the field of period masonry. It combines in a single product the marked characteristics of mechanical resistance to compression (> 20 MPa) and flexion (> 4 MPa), with the dehumidifying qualities of a breathable macroporous plaster. Unisan therefore makes it possible to consolidate masonry using the "reinforced slab with mesh" technique using a single product that restores and consolidates at the same time. Mixing the Unisan mortar with the Bond Plus polymeric emulsion instead of just water (proportions: 1 part Bond Plus with 2 parts WATER) represents the two-component version of the product, which is characterized by greater adherence of the mortar to the substrate. The polymer present in the Bond Plus aqueous emulsion protects the mortar during its curing phase, especially when it is applied in hot and/or windy and/or arid climates.


Approximately 15 kg/m² of UNISAN for every centimetre of thickness to be implemented (approximately 1500 kg per cubic metre).

Use fields

Construction of plasters and reinforced slabs in interventions of restoration, construction of plaster and dehumidifying coatings with high performance, bedding of bricks and modular elements.

Preparation of supports

The surfaces should be clean and free of any soiling, crumbling and non-adhering parts, dust, etc., conveniently saturated with water until they reach the condition of "saturated dry surface".

In the case of structural reinforcing slabs, you will need to proceed with applying an appropriate reinforcing electrowelded mesh, to be fixed with PROFIX, GROUT MICRO-J, REPAR TIX G2 or SYNTECH IC 55.

Use method

Pour about 2/3 of the mixing water into the mixer, add UNISAN and the remaining water; continue to mix until a homogeneous lump-free mixture is obtained. The mixing water should be about 12-14% of the weight of the bag. After mixing is completed wait a few minutes before applying. Apply the product by plastering trowel and brick trowel, or preferably with plastering machine (type PFT model G4).
Do not apply in case of direct exposure to sunlight or excessive ventilation. Cure the protection and the prolonged moist hardening, of exposed surfaces.

Application methods

- Brick trowel

- Finishing trowel

- Plastering machine

- Straight edge

Tool cleaning

- Water

Permitted supports

- Bricks

- Brickworks

- Mixed walls (bricks and stones)

- Stone walls

- Tuff

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Products on display

  • Protech Balcony
  • Concrete Repar
  • Readymesh