Intonet M25

Intonet M25 is a fibre-reinforced premix with READYMESH PM technology, made up of hydraulic binders, siliceous aggregates, special additives and microsilicas with high pozzolanic activity. These microsilicas, with very fine particle size, increase the mechanical performance of the plaster and have very positive effects on its durability, preventing the development of unwanted reactions between the hydraulic binders and the saline compounds which are usually present in the masonry (sulphates), or come from particularly aggressive exposure environments (chlorides, nitrates). The particular balance between breathability, absorption, mechanical performance, durability, resistance to chemical attacks makes the use of INTONET M25 particularly recommended for restoration and reinforcement operations of brick, stone or mixed walls. Intosana does not contain resins, solvents or radio-emissive aggregates. For thicknesses exceeding 20 mm it is advisable to improve the anti-cracking ability by inserting a suitable fiberglass plaster-holder mesh from the ARMAGLASS line. Mechanical parameters after immersion for 180 days in water saturated with: a) calcium sulphate, b) magnesium sulphate, c) sodium chloride = variations ± 3%.

The application surfaces must be clean, free of dirt, crumbly and inconsistent parts, dust, etc., suitably roughened and saturated with water until reaching the "saturated dry surface" condition. In walls to be plastered with the CRM technique it is always advisable to carry out a deep skiving of the joints, which will constitute the support base for a tenacious adhesion of the plaster to the masonry. Concrete surfaces must always be properly treated until a degree of roughening > 5 mm is obtained and freed from dust by pressure washing.

Pour approximately 2/3 of the mixing water into the mixer and gradually add INTONET M25 and the remaining water necessary, continuing mixing until a homogeneous mixture, free of lumps, of the desired consistency is obtained. The approximately necessary mixing water is equal to 15-16% by weight (3.75-4 liters per 25 kg bag). The application can be carried out using manual methods (trowel, trowel) or mechanical spray methods. Protect fresh surfaces from direct sunlight, rain and wind, ensure prolonged humid maturing. It is advisable to apply the plaster after applying an adequate adhesion render. The render can be made with INTONET M25 with a plastic-fluid consistency or by applying the specific UNTERSANA product. Both must be applied in a "sprizzo" ("sbruffatura") and must create a rough, corrugated surface, suitable for facilitating the adhesion of the subsequent plaster, which must be applied within 2-3 days.