F Ball Stopgap 300 HD Self-smoothing

Product Information

All aspects of subfloor preparation and floorcovering installation should be carried out in accordance with the appropriate British, European or International standard and follow current good working practices. Cores may be taken to determine the depth of penetration and can assist in deciding on whether or not it is possible to prepare a surface for overlaying. It may be necessary to carry out adhesion tests to ensure adequate adhesion is obtained on a contaminated surface. that are not water soluble. However, for all other smoothing compounds at least 75% of the floor area should be exposed, Note: Hard compositions may create a problem for smaller planing machines as there is not enough weight to cut into the surface.

Beam/Star flails are used for cleaning/removing soft composition materials from hard surfaces/concrete without damaging the surface but cannot be used on hard materials. 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. DESCRIPTION StopgapF77High-Performance Accelerated Waterproof Surface Membrane One-Coat Application System Adhesives such as STYCCOBOND F40, F41, F46, F47 and B95 can be applied direct to epoxy STOPGAP Waterproof Surface Membranes. A surface tensile pull-off strength of at least 1.5 N/mm 2 or in-situ crushing resistance test, with a maximum depth of indentation of 3mm, in accordance with BS 8204, is required onto a prepared subfloor before the application of floor smoothing underlayments and serves as a good guide as to the integrity of the floor.The finished profile is dependent on the size of the machine and the type and size of the flail selected by the operator. Grinding would be selected for smoothing concrete, removal of coatings, adhesives, levelling compounds and contaminants. Grinding machines are also used to polish a variety of surface finishes. F. Ball and Co. Ltd. – the UK’s leading manufacturer of flooring adhesives and floor preparation products for the contract flooring industry.

Oil, fats and grease cannot be removed by washing. If such contaminants have penetrated into the surface (which is usually the case) the only way of removing them is mechanically. This means dust-free shot blasting, scarifying, scabbling or hot compressed air blasting. Remedial work in meat processing and engineering plants, for example, remains a very difficult problem. Removing the contaminated concrete and re-screeding may be the only solution. Grinding machines are designed for precision, control and safe operation. The process is provided by diamond, tungsten or resin bonded grinding plates fitted to either single or multiheaded machines which rotate. Worn or uneven floorboards should either be replaced or levelled by sanding, planing or by patch filling with STOPGAP GREEN BAG/114 Liquid or STOPGAP 1200 PRO floor smoothing underlayment before finally covering with plywood conforming to BE EN 636 Class 2 (Suitable for use in humid conditions) and should be constructed with hardwood veneer and EN314-2 Class 3 (exterior) for the glue bond. Prior to coating or topping, concrete or screeds must first be: free of all contamination and laitance; strong enough to support the coating or topping under the conditions for which the floor is designed. Moisture levels must also be below 75% RH , 2.5% total moisture by gravametric, carbide bomb or speed test methods (less than 65% RH for wood floors) before proceeding with the installation. The responsibility for the preparation of any substrate must remain with the installer. Because of the wide variety and uses of our materials, the Company is always more than willing to offer help and assistance with individual flooring problems.Immediately prior to applying any coating, topping or adhesive, ensure that dust from any preparation method employed is removed by vacuuming. Preparing concrete may be a dusty operation therefore appropriate PPE should be worn and good ventilation should be provided. Protection of walls, furniture and equipment should be planned. The company recommends the procedures mentioned in this guide for the preparation of concrete, screeds and other surfaces prior to the installation of our products. 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. 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.