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PALACE FLOW-LEVEL is a 2 component (bag & bottle) latex-based floor levelling compound, specially formulated so that the 20kg of protein-free powder when mixed with 5 litres of the PALACE FLOW-LEVEL LATEX additive gives a highly flowable floor smoothing system, free-flowing for up to 30 minutes then sets to allow light foot- traffic as soon as 90 minutes after application. This shrinkage compensated flooring compound is suitable for application over a wide range of flooring types including sand/cement screeds, concrete, flooring grade asphalt, ceramic, porcelain & natural stone tiles as well as moisture stable adhesive residues, flooring grade 6mm plywood (EN 314:2 Class 3 Exterior) and floor surfaces prepared with the PALACE 1-COAT DPM system. When set PALACE FLOW-LEVEL will be ready to receive ceramic tile fixing after 3 hours and decorative floor coverings from 4 hours after application. It is also approved for use with electric sub-floor heating systems and will provide a level floor bed from 2 to 12mm deep. Note: PALACE FLOW-LEVEL is not suitable for directly over-laying soft vinyl, rubber, linoleum, cork or moisture-sensitive floor coatings & adhesive residues.
- Fast Drying – ready to walk on after 90 minutes
- High Flow easy levelling to a super smooth finish
- Readily bonds to most common sub-floors without priming
- Can be laid over pre-existing stable adhesive residues
- Can be laid from 2mm up to 12mm bed depth
- Suitable for use with heated sub-floors and plywood overlay
Surface Preparation: The receiving floor surface must be hard, sound and free from grease, dust, floor polish and loose deleterious materials such as worn surface coatings, plaster. Any adhesive & coatings residues must first be tested to determine if they are “moisture sensitive” and then removed if necessary. Prior to laying PALACE FLOW-LEVEL as a surface to receive moisture sensitive floor coverings, the base concrete or sand/cement screed should be tested to confirm that it has had sufficient time to dry out to reach consistent moisture reading of <75% R.H. (< 3.0% actual residual moisture content – carbide test) – tested as per BS 8203:2017 – Annex B. Where it is not known whether an effective structural DPM is in place, or where the above moisture test results show values in excess of 75% R.H (or > 3.0% residual moisture content), then a liquid damp-proof membrane such as moisture suppressant PALACE 1-COAT DPM should be applied onto the prepared concrete sub-base, either before it is over-laid with PALACE FLOW LEVEL levelling compound, or on relatively uneven concrete floors, where smoothing can be carried out provided there is no risk of hydrostatic pressure. PALACE FLOW-LEVEL can be laid directly to the sub-floor and the flat level finish it provides then gives an easier surface to be over-coated with PALACE 1-COAT DPM to ensure protection for subsequently applied moisture sensitive floor coverings.
Specific Substrate Preparation: Although PALACE FLOW-LEVEL will bond readily to most solid sub-floors, the application of a primer on highly porous surfaces will reduce the risk of pinholes in the level finish whilst also maximising flow time & adhesion strength. PALACE MULTI PRIME diluted 1 to 3 can be used for this purpose, also where Anhydrite Screed (Calcium Sulphate) based floors are being over-laid, the application of two coats of PALACE MULTI-PRIME will be necessary to form a barrier & avoid any adverse interaction between the cement-based PALACE FLOW-LEVEL and the gypsum-based screed beneath it. (Consult PALACE MULTI-PRIME tech datasheet).
*Anhydrite [Calcium Sulphate] based Screeds: Mechanically remove any loose material/laitance to give a clean, dry, solid dust-free surface prior to the application of PALACE MULTI-PRIME (first cost diluted 1 to 1 then 2nd coat neat) to ensure a protective barrier is established. Drying times of this class of screed can be at a rate of 1mm screed depth per day (2mm per day is > 40mm deep). Anhydrite screeds that already incorporate pre-installed underfloor heating systems can use this heat source to reduce drying times, along with de-humidifiers operating in the room, which will also speed up the drying process. The relative humidity (%RH) test results in the subfloor should be less than 75% RH, (residual moisture content < 0.5%) however where this cannot be achieved within a manageable period of time the application of a Damp -Proof Membrane (1-COAT DPM) is recommended to be applied after the PALACE MULTI-PRIME barrier preparation step (above) has already been completed.
Flooring Grade Asphalt: New asphalt must be left for a minimum of 7 days and degreased to remove surface bloom. If cracks are visible repair will be necessary to give a strong subfloor. Check the floor is in good condition and that there are no signs of de-bonding and/or hollowness.
Sand/Cement Screeds: Recently installed sand/cement screeds must be allowed a minimum of 4 weeks to dry sufficiently. Ensure new sand/cement screed is confirmed dry via consistent moisture measurements across the whole surface. Sand/cement screeds must have a moisture reading of less than 75% relative humidity (RH) before any levelling compound can be applied over them. Remove any laitance from the surface mechanically and ensure that any other contaminants are cleared from the surface. ideally by a vacuum cleaner. On porous or worn screeds, prime the surface with PALACE MULTI-PRIME diluted as 1 part to 3 parts water and then allow to dry.
New Concrete: Floor slabs must be allowed at least 6 weeks drying time equivalent to 1 day per mm up to an overall depth of 50mm and 2 days per mm for anything above 50mm. Ensure new concrete is tested via consistent moisture readings across the whole surface whereby a reading of less than 75% relative humidity (RH) is advised before work can commence. Remove any laitance from the surface mechanically and ensure that oil, grease curing agents and any other friable materials are removed ideally by vacuum. If the surface is relatively porous prime the surface with PALACE MULTI-PRIME diluted as 1 part to 3 parts water and allow to dry.
Dense or Power Floated Concrete: Ensure the surface has been allowed 7 days to cure. Ensure new concrete is confirmed dry via consistent moisture readings across the whole surface. Concrete screeds must have a reading of less than 75% relative humidity (RH) is advised before proceeding to over-lay. Remove any laitance or friable top finish from the surface mechanically whilst scoring & etching the surface before takins up all remaining dust residues by vacuum.
Plywood Overlay: Check that plywood overlay is flooring grade compliant to EN 314:2 Class 3 Exterior before applying PALACE FLOW-LEVEL and ensure that new or existing boards are pre-conditioned to the environment in which they will be used. When the finished floor is LVT or a similar soft-flooring, a 6mm Plywood sheet, the screw-fixed base can be used, but for resilient ceramic or stone surfaces the Plywood base must be a thickness of 15mm minimum & screwed to sub-floor structure at 150mm centres. Ensure there is sufficient ventilation beneath substrate and that the plywood has been fitted competently and will take the weight of the leveller, adhesive and the final anticipated in-use loading without any risk of excessive deflection. It should be dry and free of any contaminants, loose dust or dirt. Existing plywood showing signs of wear or abrasion will require priming with PALACE MULTI-PRIME diluted 3-parts water, to 1-part PALACE MULTI-PRIME. New, uncontaminated plywood does not require priming prior to over-laying with PALACE FLOW-LEVEL.
Floors coated with a Surface Damp Proof Membrane: Damp-Proof Membrane coatings such as PALACE 1-COAT DPM should be treated as non-absorbent substrates and applications of PALACE FLOW-LEVEL should be completed within 12 hours of the DPM being first applied (Consult PALACE MULTI PRIME technical datasheet). Sand blinding the freshly applied DPM will assist with improving the bond to over-laid screeds. Where a PALACE 1-COAT DPM has been in place for longer than 24 hours mild abrasion to ensure a good key is formed with the subsequently applied levelling compound.
Underfloor Heating Systems: Heating wires must be securely fixed to a sound consistent substrate such as cement backer board. PALACE FLOW-LEVEL should then be applied at a thickness that allows for clearance above the elements of no less than 5mm depth of levelling compound to ensure a smooth even finish will be attained prior to laying the finished decorative or resilient surface. Always allow at least three weeks before the heating elements are switched on at the lowest setting and then only raise the temperature progressively by 2’C per day over the following week.
Mixing: Add 5.0 litres of PALACE FLOW-LEVEL LATEX liquid additive into a clean mixing bucket and gradually add all the PALACE FLOW-LEVEL powder from the 20kg sack whilst stirring with a power whisk fitted to an electric drill until a smooth, creamy, lump free & fluid consistency is reached. The material should be mixed for a minimum of 2 minutes after the last of the powder is added ensuring the mixing head is below the surface to minimise air entrapment. Allow the mix to stand for 1 minute after which time the free-flowing screed will be ready for application directly onto the prepared substrate.
Application: Pour the freshly mixed levelling compound onto the prepared surface and use a straight-edged steel float to ensure the compound is evenly spread into all areas and corners. PALACE FLOW-LEVEL will readily flow across a flat surface and smooth out trowel marks for about 20 to 30 minutes before it begins to firm up. Do not allow the mixed material to stand for a prolonged period in the bucket as this will shorten its’ flow & open time. The use of a spiked roller will assist in removing air bubbles and achieving a consistently smooth surface finish, particularly between adjacent mixes of product. Only spike roll whilst the product is still in its fluid state, usually for about 10 minutes after initial application. The maximum total application thickness for this product is up to a depth of 12mm. In ideal conditions (20’C), it will remain flowable for 20 minutes and then. after about 45 mins to 1 hour, the laid screed will have reached the initial set, before the final set is attained after 60 to 90 minutes depending on site conditions. Do not mix or apply this product if site & surface temperatures are below 5’C or greater than 35’C or likely to be less than 5’C for the first 24 hours. All tools & mixing equipment with clean running water before the material reaches set.
Curing & Drying: PALACE FLOW-LEVEL when applied at 20’C & 65% RH under ideal site conditions will allow for a working time of up to 20 minutes and then initial set after 1 hour. Under the above conditions, it will rapidly cure to allow light foot traffic after 90 minutes and will be ready to receive tiles after 3 hours and soft flooring after 4 hours.
Coverage: PALACE FLOW-LEVEL when applied over a smooth even non-absorbent floor will cover at a rate of one 20kg bag & a 5-litre bottle when laid as a 3mm layer will cover up to 5.0M2. Adequate ventilation is essential and any draughts or exposure to excessive heat sources must be eliminated to ensure consistent drying.
Precautions: PALACE FLOW-LEVEL should not be mixed with water or any other brand of latex additive. Both units have a storage life of not less than 12 months if stored in dry, unopened and frost-free conditions at temperatures between 5’C & 30’C. PALACE FLOW-LEVEL is not recommended as a final wearing surface. Note: this product is not suitable for directly over-laying soft flexible vinyl, rubber, cork or any similar moisture-sensitive very soft floor coatings & unstable adhesive residues.
Storage & Packaging: PALACE FLOW-LEVEL is supplied in 20kg moisture resistant bags along with a 5.0-litre bottle of latex dispersion additive. This product should not be mixed with water or any other brand of latex additive. Both units have a storage life of not less than 12 months if stored in dry, un-opened and frost-free conditions.
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