Mapesil LM is a one-component, solvent-free, neutral-cure silicone sealant which does not emit unpleasant odours,
available in the form of a thixotropic paste. It is easy to apply on vertical and horizontal surfaces and cures at room
temperature through the humidity present in the air to form a flexible sealant.
Seals made using Mapesil LM are extremely stable over time, even when exposed to inclement weather, industrial
environments, temperature variations or water. The product remains flexible over a temperature range of between -40°C
and 150°C.
Mapesil LM delays the formation of surface mould.
Mapesil LM generally offers good resistance to chemical agents. However, because of the wide range of products and
service conditions, if in doubt carry out preliminary tests beforehand.
Mapesil LM bonds perfectly to most types of substrate used in the building industry without applying a primer
beforehand (glass, ceramic, marble, aluminium, zinc-plated sheet metal, concrete, stainless steel and PVC).
Primer FD must be applied beforehand in the case of prolonged immersion in water.
If in doubt, please contact the MAPEI Technical Services Department or carry out preliminary tests beforehand.
Mapesil LM is particularly suitable for surfaces sensitive to acids on which conventional neutral or acid sealants normally
provoke changes in colour or staining of the substrate.
Mapesil LM complies with EN 15651-1 norm (“Sealants for internal and external faade elements”) with performance rating
F-EXT-INT-CC, with EN 15651-2 norm (“Sealants for glazing”) type G-CC, with EN 15651-3 norm (“Sealants for joints in
sanitary areas”) type XS1 and EN 15651-4 norm (“Sealants for pedestrian walkaways”) with performance rating PW-EXTINT-
CC.