FIRMAX CP

Installation of Final Finishes

Timber Floors

Fermacell flooring elements are suitable as a substrate for engineered boards as well as mosaic or herringbone parquet.

Firmax CP flooring elements are NOT suitable as a substrate for solid timber flooring (inc. parquet & solid strip flooring) unless it is laid as a floating floor or using special installation techniques.

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Laminated, engineered timber floor, including parquet can be laid as a floating or bonded floor (refer to manufacturer’s recommendations).

Mosaic parquet should be installed in a box or herringbone pattern to ensure that there is sufficient allowance for movement of the timber in all directions.

Moisture and humidity conditions should always be taken into account when installing timber products.

Primers, sealers and adhesives with lower water content are recommended and should be applied in accordance with the manufacturer’s instructions.

It is recommended that the underfloor heating is switched off when installing the floor finish.

Carpets

Use a suitable primer when laying self-adhesive carpet tiles and water-permeable floor coverings.

Carpets can be secured with strong double-sided adhesive tape.

Gripper rods should be adhered to Firmax CP boards.

If a carpet is to be bonded over an entire area, a peel-off adhesive system is recommended so that the carpet can be removed in once piece at a later date.

When laying non-permeable floor coverings, a reactive resin-based adhesive rather than a dispersion-based adhesive is recommended.

Firmax CP should be treated with a suitable, thin levelling feather screed for thin floor coverings (thin carpets, PVC, marmoleum etc). These are usually applied in liquid form, drying to form a perfectly flat and level surface. This ensures that no imperfections within the Firmax CP installation show through the floor covering when laid.

​It is recommended that the underfloor heating is switched off when installing the floor finish.

Ceramic tiles and stone floors

Tiles should be installed using a ‘thin-bed’ method. ‘Thick-bed’ methods are not recommended. Should thick bed be required a suitable decoupling system should be employed.

Tiles should be fixed with a polymer-modified, cement-based, emulsion-based or reactive resin-based adhesive which have been approved by the manufacturer for use with cement-based boards.

Tiles should not be soaked prior to fixing and at least 80% of the tile should be in contact with the adhesive bed.

Tiles should be laid with open joints and never with tightly butted joints.

Only grout tiles when tile adhesive has fully hardened.

For tile and stone size limitations on Fermacell see Allowable Tile & Stone Sizes NEEDS LINK.

It is recommended that the underfloor heating is switched off when installing the floor finish.

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