UNTERSANA

Breathable, dehumidifying scratch coat, based on hydraulic lime

Code: INT.0201

Components: 1

Appearance: Powder

Dehumidifying adhesive compound for the construction of anchoring scratch coats, for the subsequent application of normal plaster (INTOSANA), dehumidifying (SANATIGH) and light (SANAWARME and CALEOSANA), for new buildings, in existing buildings, for ecological building interventions and in the restoration of vintage buildings and monuments.

Customs Code

3824 5090

Linee di appartenenza

Certification obtained and Standards

EN 998-1

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

EN 14021:2016

Environmental claims content of recycled material

General characteristics

Maximum diameter of aggregate: 1.5 mm

Min. recommended thickness: 4 mm

Mix with water: 22-25 %

Nonflammable

Pot-life: 60 min

Shelf-life: 12 months

Temperature of use: +5 / +30 °C

Technical specifications

Bonding force

2.42 N/mm²

Breathability

14 μ

Capillary absorption

0.48 kg•h^0.5/m²

Complete hardening

3 day

Compressive strength

> 25 N/mm²

Density

1850 kg/m³

Flexural strength

> 5 N/mm²

Reaction to fire

A1 _

Static elastic modulus

11500 N/mm²

Thermal conductivity

0.298 W/m*K

Total recycled content

2.6 %

Available colours

- Light gray

Packaging and dimensions

- Bag 25 kg

- Pallet: 50 x (Bag 25 kg)

Characteristics

UNTERSANA is composed of hydraulic lime, botticino, kaolin, calcium caseinate, Vichy salt, tartaric acid and natural fibres. Does not contain cements, resins, solvents, thinners and radioemissive aggregates.

Consumption

From 4 to 6 kg of UNTERSANA per square metre of surface to be rendered.

Use fields

Anchoring scratch coat (applied by "spraying" or "splashing") for the formation of an adhesive bridge for easy grip of subsequent plasters, dehumidifying, breathable, based on hydraulic lime.

Preparation of supports

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

Use method

Pour about 2/3 of the mixing water into the mixer, add UNTERSANA and the remaining water; continue to mix until a homogeneous lump-free mixture is obtained. The mixing water should be about 22-25% of the weight of the bag. After mixing is completed wait a few minutes before applying.

"Spray" the product, with plastic fluid consistency, on the application supports, with plastering trowel and brick trowel or with plastering pump. Protect fresh surfaces from direct exposure to sunlight, from the rain and wind, cure the prolonged moist hardening.

Application methods

- Brick trowel

- Finishing trowel

- Plastering machine

Tool cleaning

- Water

Permitted supports

- Bricks

- Mixed walls (bricks and stones)

- Brickworks

- Stone walls

Warnings, precautions and Ecology

For a proper adhesion of the next plaster, it is appropriate to apply the latter before the complete curing of the rendering UNTERSANA (within 24-36 hours).