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Vendor Name
Description
COFLEX CMB By PROFILITEC
Collection: Coflex
Type: Cement screed or mortar bed separation joint
COFLEX CMB - This movement joint profile consists of a Resinil wide base flange which can be fitted under the mortar or screed bedding to subsequently host the synthetic resin co-extruded profile insert, with an extension piece for adaptation to the mortar bed height. Conceived to properly subdivide the screed, according to the minimum bays provided in the project and in correspondence of the cast retakes. It works also as form-work, as its wide lateral flanges keeps it easily in the right position for cement casting. Settlements of the structure, expansion and compression due to thermal excursion, shrinkage and structural bending are elements that create continuous movements and stresses in the flooring, which often generate problems of cracking or premature detachment of the covering. It is therefore advisable to provide an adequate grid of expansion joints during installation, choosing the type of joint and its location in consideration of the loads and stresses to which the coverings will be subjected, and the different coefficients of linear thermal expansion of the bedding and tiles and the possible interactions between different materials. The splitting of the surface and the screed underneath is in fact decisive in order to guarantee a workmanlike laying in both adhesive and traditional methods. Always provide for a joint: - In correspondence with a change in the substrate material and/or the joints. - At pre-existing discontinuities in the substrate, such as structural expansion joints and different screed blocks. - At fixed elements such as columns and doors. - At changes in the laying direction. - At points where the tiled surface meets walls or containing elements. The resulting modules should be as even as possible. In general, the proportion between the two sides should not exceed 2:1.