F Ball Stopgap 300 HD Self-smoothing

Product Information

The finished profile is dependent on the size of the machine and the type and size of the flail selected by the operator. Adhesives such as STYCCOBOND F40, F41, F46, F47 and B95 can be applied direct to epoxy STOPGAP Waterproof Surface Membranes. that are not water soluble. However, for all other smoothing compounds at least 75% of the floor area should be exposed,

STOPGAP FILL AND PRIME is a two component, flexible cement primer that is flexible with thixotropic properties to allow the filling of joints. STOPGAP FILL AND PRIME should be applied using a steel trowel and spread evenly on to the prepared substrate providing a smooth, uniform surface. The consistency has been designed so that joints in raised access panels are filled. However for application over wide joints it is advisable to mix a unit with reduced liquid content and fill the joints prior to a subsequent coating of STOPGAP FILL AND PRIME mixed to standard consistency. Then apply STOPGAP 700 Superflex or STOPGAP 1200 PRO. In all cases chipboard and plywood must be primed with dilute STOPGAP P131 PRIMER as recommended. Sterling Board OSB (Oriented Strand Board) must be flooring grade appropriate for the construction of the floor, nature of the building and the expected design loading should conform to BS EN 300, Type OSB/2, Type OSB/3 or Type OSB/4. Any old adhesive residues should be removed by mechanical methods such as scraping, shot blasting and grinding etc. Certain underlayments such as STOPGAP 1200 PRO are

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F. Ball and Co. Ltd. – the UK’s leading manufacturer of flooring adhesives and floor preparation products for the contract flooring industry. Ceramic, terrazzo and quarry tiles are unaffected by moisture but dependant on their water absorption may be sufficiently permeable to allow the passage of moisture vapour and are often laid in areas which do not incorporate a damp proof membrane. Where this is the case, these bases should be covered with a layer of flooring grade asphalt complying with BS 8204. Alternatively, the use of a STOPGAP F77 Waterproof Surface Membrane can be applied, providing the substrate has been sufficiently prepared by mechanical means and the grout lines lightly raked to remove any contaminants. In both cases this should be followed by priming with neat STOPGAP P131 PRIMER and allowed to dry before applying a minimum 3mm of the appropriate STOPGAP floor smoothing underlayment. If either method is not possible, lift the tiles and relay the floor. STOPGAP ISOLATOR Membrane may also be used in certain situations. Wood mosaic panels require over pinning with flooring grade plywood in all cases. This is not practical on solid floors and panels should therefore be removed, along with any adhesive residues.

Membranes such as STOPGAP F76, F77 or F78 can be overcoated with smoothing underlayments or certain adhesives. When applying a smoothing underlayment onto a waterproof surface membrane, the surface should be primed with neat STOPGAP P131 PRIMER and allowed to dry before proceeding with the underlayment. The exception is STOPGAP F78 where the smoothing underlayment must be applied direct (within 12 hours of application) without priming. All these products are designed to generally repel water from entering into the concrete or screed or to form a barrier to prevent moisture escaping and adhesion will be impaired if a water based smoothing underlayment, adhesive or waterproof surface membrane is applied. This Subfloor Preparation Guide describes the different types of procedures available to produce the most acceptable substrate possible, ready for the installation of one or more of our products. The medium for shotblasting equipment is steel abrasive “Shot”. The most common grades are 390, 460 and 550. However, in the majority of cases identifying the type of paint or coating will be difficult and it is most likely it will be brittle, worn, peeling or flaking off the substrate and is therefore not good enough to receive either a smoothing underlayment or adhesive. The easiest method of removing old paint is usually dust-free shot blasting.During the laying of the floorcovering an ambient temperature of at least 18°C must be maintained along with a floor temperature of at least 10°C. The type and condition of the subfloor has a direct influence on the installation and performance of a floorcovering and the importance of subfloor preparation cannot be emphasised too strongly.