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• Features & Benefits
• Recommendations
• Preparation of the Substrate
• Application
• Safety Instructions

Features & Benefits

• High acoustic performances
• Uncoupling and anti-fracture properties
• Can be used without removing existing flooring
• Low thickness (2 and 4 mm)
• Applicable above radiant floors
• Suitable for the main types of flooring
• Does not require the use of special adhesives
• Environmentally friendly (recycled and recyclable raw materials)
• Very low emission of volatile organic substances (VOC)
• Helps earn LEED certification credits

Recommendations

• Only apply on horizontal internal surfaces
• Do not apply in areas subject to heavy traffic and in the presence of high concentrated loads
• In case of doubt, please contact the MAPEI Technical Services Department
• Do not apply under lightweight or shiny resilient floor coverings or under cushion-floor
• Apply Mapesonic Strip around the perimeter to avoid the formation of acoustic bridges
• Do not expose the material to direct sunlight
• If accidental contact with water is possible (e.g. application in bathrooms etc.), bond Mapesonic CR using suitable adhesive and protect it using Mapei Mapelastic Smart or Mapelastic Turbo reinforced with Mapei Mapenet 150
• When applying the product to cementitious substrates ensure they are completely cured
• Do not apply on floors to be polished in situ
• Make sure the product is applied on solid substrates
• Do not apply on substrates subject to continuous rising damp

Preparation of the Substrate

• Mapesonic CR may be applied on all types of cementitious or anhydrite substrates as long as they are well cured, mechanically strong, coherent, dry, flat, have no cracks and are free of dust and other material which could compromise adhesion
• Cracks may be repaired with products such as Mapei Eporip, Eporip Turbo or Mapei Epojet
• If the moisture content in cementitious substrates is higher than the required level, wait sufficient time until it dries or apply a waterproofing primer to form a suitable vapour barrier
• Mapesonic CR may be laid on old ceramic and stone, floor coverings as long as they are well bonded to the substrate and have been cleaned to remove traces of grease, oil, wax, varnish, etc.
• On uneven surfaces and areas where fittings pass through (such as electric cables and pipe-work) the substrate must be levelled before laying Mapesonic CR

Application

• Before removing the protective plastic backing sheet, apply Mapesonic Strip adhesive tape around the perimeter of the room and around pillars and all other abutments
• The product must be laid in a continuous layer, with special care at the corners of the room and at the joints between sections
• Mapesonic Strip can be applied after laying Mapesonic CR
• On clean, dry surfaces unroll the sheets of Mapesonic CR in the direction of the longest side of the room
• Leave 24 hours to acclimatise before cutting them to size
• Roll the sheets up again to half their length, with the remaining part lying on the substrate, and spread the adhesive dependant on the characteristics of the substrate on the exposed part of the surface and of the floor to be applied
• One of the one-component adhesives based on sililated or two-component polyurethane or epoxypolyurethane based adhesives of the MAPEI range must be used on non-absorbent substrates, such as ceramic tiles, and for application of multi-layered parquet
• C2 S1 cementitious adhesives can be used to glue Mapesonic CR before application of ceramic tiles and stone materials
• After laying the sheet, massage the surface with a rigid roller or flat trowel, starting from the centre and working towards the edge
• Repeat the laying procedure for the second part of the roll
• Do not apply too much pressure on the surface while applying Mapesonic CR or until the adhesive used for bonding has completely set
• 24-48 hours after laying the sheets, the new floor finish may be bonded
• We recommend using class C2S1 cementitious adhesives to bond ceramic, porcelain and stone not sensitive to moisture over Mapesonic CR
• When bonding stone sensitive to moisture (class B according to the MAPEI classification system) use a suitable specialist adhesive
• Parquet floors (multi-layered type only) may be laid with one of the one-component adhesives based on sililated or two-component polyurethane or epoxy-polyurethane based adhesives of the MAPEI range

Grouting and sealing:

• After applying and grouting the new floor finish, cut off the excess part of the Mapesonic Strip
• Apply the skirting around the room without coming into direct contact with the floor
• Seal the space between the skirting and the floor with a suitable flexible sealant

Safety Instructions

• Mapesonic CR is an article and referring to the current European regulations (Reg. 1906/2007/CE - REACH) does not require the preparation of the material safety data sheet
• During use it is recommended to wear gloves and goggles and follow the safety requirements of the workplace