Proceed in the same way prior to installing a PVC floor. This means a check beforehand of the construction. Is it a non-suspended and non-ventilated or a suspended and ventilated floor? Is a moisture barrier required? Once old floor covering has been removed, remove old adhesive residues before levelling. Note: the only exception compared to a PVC floor is when installing onto a floating underfloor. While this is perfectly acceptable for a PVC floor covering, it is not suitable for LiquidDesign. Due to the joints between the floorboards, there is no fixed unit onto the actual subfloor. So do not do it!
First prime the underfloor with 044 Europrimer Multi, unless a moisture barrier has already been applied with 026 Euroblock Multi. Are there skirting boards on the wall? Then use a brush to carefully apply the primer to the skirting board! If you fail to do this, the levelling compound will not flow well at the edges and will ‘remain higher' in relation to the rest of the floor. Result: LiquidDesign will flow back at the edges, causing an inadequate coverage and the appearance of cork particles in the mixture. Once the 044 Europrimer Multi (or 026 Euroblock Multi) has dried, the floor can be levelled. This can be done with the Eurocol levelling compounds 960, 975, 990 or 991.
Important: prime the levelled floor again the following day with 044 Europrimer Multi*). This prevents air bubbles appearing in the wet LiquidDesign layer. It also makes the LiquidDesign floor easier to remove in the future when it needs to be replaced. Use a lambswool roller for priming and work with little pressure. Half way through the job, take the lambswool roller back and then roll it half way down the job away from you. In this way, you hit the underfloor twice everywhere. Also use this technique during priming before levelling. Allow the 044 to dry for at least two hours to prevent a reaction between a too-wet primer and the polyurethane (PU) in the LiquidDesign! Now we have assured a closed underfloor ready to apply LiquidDesign. Hard workers pay attention: drops of sweat into wet LiquidDesign can leave visible traces behind in the top layer. So avoid that!
*) Note: after levelling with 920 Europlan Alphy or 925 Europlan Alphy Direct (e.g. on anhydrite), it’s necessary to prime twice with 043 Europrimer Alphy. Gypsum absorbs stronger than cement.
For a layer thickness of 2.5 mm of LiquidDesign, you will need 2.5 kg per m². A 15 kg container is therefore sufficient for 6 m². Larger surfaces offer more adequate space, so you can work more efficiently and sometimes get more sqm from one container. For smaller and tighter areas, take a slightly higher consumption into account. This prevents you from falling short of material since it is more difficult to apply a thin layer in these areas, especially with skirting boards on the wall! Divide the area into the desired square meters. This allows you to keep and overview and prevents you from spreading it too thick. Prepare a work plan in advance to be able to work optimally wet-in-wet. Ideally, you should work with 1 person for mixing, 1 for applying and 1 for using the spiked roller. The person who applies sets the pace. The person using the spiked roller distributes the cork well and makes corrections if necessary whilst the person who applies continues. In this way, a mixed bucket is processed as quickly as possible – within 10 minutes. The mixing of components A and B, including pouring, takes 3 minutes, so the person in charge of the mixing always starts 3 to 4 minutes before the person who applies has emptied his bucket. Too early means less processing time, but too late makes wet-in-wet work difficult. The person in charge of mixing therefore is the key person in making the team run like a well-oiled machine!
Finish the floor 1 day after application – at least within 48 hours – with 355 LiquidDesign Finish, a 2-component lacquer system. Consumption is 100 to 150 grams per m², to be applied in one go. Shake component A well and mix this lacquer for 3 minutes while adding the hardener B. Pour the mixture through a sieve into a clean mixing bucket, mix for another 1 minute and then let the mixture ‘set’ for a further 10 minutes. Thereafter the reaction between A and B is complete, ensuring an optimal installation. Use an 11 mm microfibre roller and remember that it absorbs approximately 750 grams of lacquer! Spread the lacquer all over the floor in such a manner possible to work well wet-in-wet. For skirting boards, apply the lacquer with a brush tight against the skirting board. In doing so, avoid incomplete coverage so that no ‘gloss marks’ occur in the matt finish. When applying the lacquer, you should also work with three people with a good division of tasks. One person mixes, the second distributes the lacquer across the floor and the third person rolls it with a saturated roller from one side of the area to the other. The person in charge of mixing can also for example brush against the skirting boards and remove tape.
Important: ensure good ventilation, but avoid draft. Poor ventilation causes white spots in the finished lacquer! Use ventilation grids, tilting windows and/or mechanical ventilation. Result? A beautiful floor with a warm and natural appearance!