FAST AND PERMANENT BOND The more straightforward vinyl products to install are homogenous products on absorbent subfloors. Here, a quality acrylic adhesive with good grab and plasticiser migration resistance is all that is needed, such as the Bostik Laybond Vinyl adhesive.
Providing up to 45m² of coverage per 15kg, the Bostik Laybond Vinyl adhesive ensures a fast and permanent bond, helping installers to deliver a high standard of work on time and in budget. The adhesive is suitable for use over normal underfloor heating installations and will bond most sheet vinyl and tiles. It can be applied to asphalt, concrete or sand and cement screeds, as well as chipboard, hardboard, plywood and smoothing compounds.
TEMPERATURE FLUCTUATIONS Where high temperature fluctuations are likely to be present, such as in conservatories and glass fronted areas, the use of a high temperature adhesive, such as Bostik Laybond HT, is essential. This applies to the whole range of vinyl products under these conditions, not just homogenous and heterogeneous sheet.
Bear in mind that picture windows, areas around ovens and where hot water pipes run close to the floor’s surface should all be bonded with a HT adhesive to enable the tension and potential movement to be controlled. There is nothing worse than seeing a beautifully designed floor with a couple of gaps or bubbles in it due to the vinyl shrinking or expanding.
A correctly installed warm water underfloor heating (UFH) system should never exceed 28o
C at the glue line which,
LUXURY VINYL TILE In most cases vinyl tiles cut down from sheet vinyl can be considered in the same manner as the sheet they originated from, but when it comes to luxury vinyl tile (LVT), it’s a different story. LVT is no longer just narrow strips of short length but is now available in significantly wider and longer formats to mirror timber or ceramic flooring. This makes LVT a very attractive option for designers, but does pose more potential issues for installers. The issues simply relate to the tension within the product as it tries to ‘move’ under temperature fluctuations. The key is in understanding if and where there is likely to be movement.
In a typical lounge area with no aggressive sunlight coming in, the adhesive choice can simply be a high- quality pressure sensitive adhesive, such as Bostik Laybond Pressure Sensitive. The pressure sensitive aspect helps a lot in the installation of these products, particularly where bespoke designs are being used, which requires time to plan and lay the flooring. The resins make the adhesive robust as well as nice and tacky, so it will cope with typical room temperature fluctuations. A pressure sensitive adhesive also enables the floorcoverings to be bonded onto very low absorbency subfloors.
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provided the heating remains switched on throughout the winter months, should not pose any problems for the adhesives already suggested above. However, when it comes to electrical heating the temperature control can be much more erratic. We would therefore always advise that with electrical underfloor heating you utilise a high temperature adhesive or use a resonated pressure sensitive adhesive, but lay into it wet as this greatly increases the bond strength of the adhesive.
ENDLESS POSSIBILITIES Vinyl floorcoverings come in a wide variety of beautiful patterns with endless design possibilities. Whether for straightforward homogenous sheet vinyl, cap and cove applications, or LVT in a conservatory, Bostik has the products to ensure floors perform correctly so that all your hard work can be appreciated for years to come.
www.bostik-profloor.co.uk COVER STORY | 15
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