ROLL WITH IT
Here, Martin Cummins, UK Technical Support Manager at Bostik gives some top tips for choosing and using the right adhesive.
Watch out for discolouration Some floorcoverings being manufactured today are a lot more susceptible to solvents and can actually discolour. This issue can occur on coving jobs with heterogeneous vinyls where residual solvent can discolour the wear layer. To avoid this problem, it’s important to always check with the vinyl supplier as adhesive recommendations change over time.
Don’t leave adhesives open for too long The longer the adhesive is left open before laying the floorcovering then the lower the bond strength generally is, and it may not be high enough to prevent floorcoverings from moving. This is not an inherent adhesive problem but an issue of incorrect use. Wrong trowel sizes can also have a similar impact. Some coverings will be much more difficult to restrain and so adhesive use becomes more critical. Always check the datasheets and adhesive recommendations before laying the floorings.
Get the temperature right It is also important to get the adhesive to the right temperature before use - this is very important with water- based adhesives. A ‘cold’ adhesive may give a much lower tack to the floorcovering than at ambient conditions. The trowelling out characteristics, and particularly the over rolling of thin spread adhesives, will also be affected due to the increased viscosity at cold temperatures. Tack times and bond strength development can also be slowed down, so movement of floorcoverings is much more likely both during the rolling of the covering itself and also as the adhesive dries and cures. This may mean you need to leave it a lot longer before trafficking.
36 | ADHESIVES
FOR A QUICK
START, CHOOSE BOSTIK ROLL
The flooring industry is gradually moving to safer, cleaner products, with many fitters looking at alternative solutions that have a low impact on the environment and the building occupants.
With this in mind, Bostik provides an effective solution to meet this growing demand with Bostik Roll, a brand new, solvent-free adhesive strip that has been specially designed for the installation of new skirting and other floor or wall mounted accessories.
Bostik Roll is an effective alternative to water and solvent- based adhesives, providing a quick stick when fitting all types of skirting, including when forming a cove. It can also be used to fit protective wall panels and other accessories, such as cable ducting.
Supplied in ready-to-use, dry adhesive rolls in widths of 25mm, 50mm or 85mm, the new Bostik Roll provides a convenient, easy and clean installation. As the adhesive is dry, there’s no curing time required, meaning the worksite can remain open to traffic. This makes it ideal for use in sensitive areas, such as healthcare settings.
Fully-compatible with PVC coverings and under-floor heating, with a temperature resistance of -40oC to +120oC, the reinforced adhesive strip provides an immediate, extra-strong grip and long-life bond.
As it’s solvent-free, Bostik Roll is an environmentally friendly option that has less impact on the building occupants. It achieves A+ and ECI Plus ratings with LEED and BREEAM, thanks to its very low VOC emissions.
With sizing and packaging specially designed for each application, adhesive has never been so quick and easy to use.
Bostik has a wealth of experience in supplying flooring preparation products and adhesives to professional flooring contractors.
www.bostik-profloor.co.uk www.tomorrowscontractfloors.com
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