Claymaster 300mm Pink Board is the original compressible fill expanded polystyrene material used to protect foundations against lateral heave, typically on the inside face of piled ground beams or deep trench fill foundations.

Shrinkable clays are soils containing a large proportion of mineral particles of less than 0.002mm in diameter that produce an extremely cohesive soil type when wet, but shrinks to a crumbly, crazed structure when dry.

The expansion and contraction process during wet and dry periods is known as ‘clay heave’ which can cause severe problems with foundations like exterior cracks, bouncing floors and expansion joint separation.

This pink board works by surrounding the pile cap with a layer of low density expanded polystyrene that reduces the pressure on the ground beams as the surrounding clay expands and contracts.

Claymaster Jablite is also called clay heave protection board, a moisture resistant void filling expanded polystyrene sheets developed to protect foundations from clay heave, shrinkage or soil movement.

Jablite Claymaster Sheet is a lightweight pink foam, easy to install and handle 8' x 4' board that provides protection against clay heave and foundation problems due to moisture movement.

Compressible Fill Claymaster sheets are laid in the bottom of the trenches to ensure that the full width of the trench is lined and that the claymaster sheets are butted tightly together.

In situations where the concrete piles stick out into the trench, the Claymaster sheets should be neatly cut to fit (if possible factory-cut edges can be used).

Using Claymaster you can avoid cracked walls, glass, tiles, distortion of the building door and window frames, and sloped uneven floors.

Specification:

Thickness: 300mm

Width: 1200mm

Length: 2400mm

Board coverage: 2.88m2

Material: Low density compressible expanded polystyrene (EPS)

Soil heave potential: Medium

Jablite Claymaster Polystyrene Features:

 · Easy to install and handle.

 · Resistant to effects of moisture.

 · Lightweight expanded polystyrene foam.

 · Reduces the pressure on the ground beams.

 · Protect foundations against lateral heave.

 · A permanent solution to clay heave problems.

 · Coloured pink for easy identification on site.

 · Protect foundations from shrinkage or soil movement.

 · No need for specialist trades or equipment.

 · A+ rated in the BRE Green Guide to Specification.

 · Available in a variety of different thicknesses.

 · BBA Certified and meets the NHBC requirements.

 · Reduces the lateral force transmitted to the structure.

Claymaster Compressible Fill EPS Installation Guide:

 · For piled ground beams, Claymaster is generally only required on the inside face of external ground beams, as indicated in the NHBC guidelines.

 · Typically the material will be placed against the face of the beam after striking the formwork and prior to backfilling.

 · If a permanent formwork system is used to cast the beams then the formwork should be dimensioned such that the Claymaster will fit inside the former prior to pouring concrete.

 · For use in deep trench fill applications the excavation width should accommodate the width of the foundation and the thickness of the Claymaster required.

 · Care should be taken to ensure that the Claymaster is adequately supported so that it remains in the correct position during the placement of the concrete.

 · Typically, the excavation will be founded 500mm below the zone of influence, and the Claymaster installed in accordance with NHBC requirements, i.e. 500mm above the bottom of the trench and on the inside face of the excavation.

Claymaster Standards and Certification:

 · BBA Agrement Certificate.

 · Declaration of Performance.

 · ISO 9001 Certification.

 · ISO 14001 Certification.

*Further information may be found in our Downloads section.

Fairly easy access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheets

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