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Palace Gyp Level – Gypsum Based Rapid Curing Floor Levelling Compound for Anhydrite Floor Screeds – Pallet 54x20Kg bags Half-Pallet 27x20Kgs (CREAM colour)


Palace Gyp Level is:

Primarily recommended for application over a pre-existing anhydrite floor screed without the need for applying a barrier seal. This product can also be applied to other commonly encountered surfaces such as flooring grade plywood overlay, existing ceramic & vinyl tiles as well as concrete* & sand/cement screed*, both of which will require pre-sealing before levelling over with PALACE GYP-LEVEL.

  • For floor levelling directly over anhydrite & gypsum screeds
  • Has a working flow time of 30 to 40 minutes at 20’C
  • Can be laid directly to existing anhydrite sub-floors
  • Can be laid from 2mm up to 20mm bed depth in 1 pour
  • Suitable for applications where underfloor heating is to be installed
  • Excellent levelling to a super smooth finish
  • Fast drying to take foot traffic after 3 hrs
  • Eliminates the need for a barrier primer on anhydrite floors
  • Suitable for pump or trowel application
  • Can receive tiles directly when applied using PALACE GYP-BOND adhesive.


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Palace Gyp Level more information :

Coverage: when applied over a smooth even non-absorbent floor at an average 3mm depth will cover at a rate of one 20kg bag per 5.0M2.

PALACE GYP-LEVEL is a super-smooth rapid-curing floor levelling compound incorporating calcium sulphate binders along with a high level of polymer-modification making it the ideal, internal sub-floor smoothing underlayment for directly application onto an existing Anhydrite based floor screed without having to pre-seal the surface. It’s fast setting properties cure rapidly give a super smooth even underlayment finish, ready to receive tiling* and decorative resilient floor coverings. It can also be used to level over sealed* concrete & cement-based floor screeds and readily bonds to flooring grade plywood overlay, existing ceramic and suitably prepared vinyl tiled floors in application depths ranging from 2 – 20mm. PALACE GYP-LEVEL is flexible, demonstrates excellent bond strength to existing anhydrite substrates and it is suitable for use where underfloor heating systems are in place or are to be installed.

Surface Preparation

PALACE GYP LEVEL is primarily recommended for application over a pre-existing anhydrite floor screed without the need for applying a barrier seal. Any recently laid Anhydrite base will however still require significant preparation to remove all laitance, dust & loose fragments to ensure PALACE GYP-LEVEL will form a stable secure bond with this class of base substrate. Older anhydrite floors must be checked to ensure they are hard, sound and free from grease, dust, floor polish, laitance 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 GYP-LEVEL, the base anhydrite screed should be tested to confirm that it has had sufficient time to dry out to reach a consistent moisture reading of <75% R.H. (< 0.5% residual moisture content) – tested as per BS 8203:2017 – Annex B. Where it is not known whether an effective structural DPM is in place, or where the moisture test results show values in excess of 75% R.H (or > 0.5% 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, before it is over-laid with PALACE GYP LEVEL levelling compound. Natural room temperature drying times of this class of screed can be at a rate of 1mm screed depth per day (2mm per day is > 40mm deep), therefore the use of PALACE 1-COAT DPM and where this cannot be achieved within a manageable period of time, the application of PALACE 1- COAT DPM is recommended.

Although PALACE GYP-LEVEL will bond readily to most solid sub-floors, the application of a primer on highly porous surfaces will assist with maximising flow time, adhesion strength & reduce pin-holing. PALACE MULTI-PRIME diluted 1 part to 3 parts-water can be used for this purpose and very porous substrates may need a second coat diluted 1-part water to 1-part primer before applying PALACE GYP-LEVEL floor levelling underlayment.

Specific Substrate Preparation:

PALACE GYP-LEVEL is primarily specified for use on existing anhydrite (calcium sulphate) based floor-screeds. Its’ application across other substrates is limited particularly where cement-based substrates are concerned as it is still possible that an adverse reaction can occur unless the cement screed or concrete base is sealed with two coats of PALACE MULTI-PRIME (see tech data sheet) to form a barrier & avoid any adverse interaction between this substrate and the PALACE GYP-LEVEL being laid over it.

Tile backer boards:
Confirm the composition of the Tile Backer board before applying PALACE GYP- LEVEL, as those based on cement or a cement slurry top-coat will require pre-sealing as if they were a cement-based screed or concrete (see previous). Boards that are calcium sulphate based can be over-laid directly with PALACE GYP-LEVEL.

Plywood Overlay:

Check that plywood overlay is flooring grade compliant to EN 314:2 Class 3 Exterior before applying PALACE GYP-LEVEL and ensure that new or existing boards are pre- conditioned to the environment in which they will be used. Plywood sheets must be a thickness of 15-18mm minimum & screwed to substrate 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 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.

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 GYP-LEVEL should be completed within 12 hours of the DPM being first applied (Consult PALACE 1-COAT DPM technical data sheet). Sand blinding the freshly applied DPM will assist with improving the bond to over-laid screeds.

Underfloor Heating Systems:
Heating wires must be securely fixed to a sound consistent substrate such as cement backer board. PALACE GYP-LEVEL should then be applied at a thickness which allows for a 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.

Palace Gyp Level technical data:

SpecificationBS EN 13813:2002
Working time @ 20oC20 - 30 min
Flow properties (using a 30mm x 50mm flow ring)>130mm
Initial set
Foot traffic
Ready for tiling
180 min
4hrs for a 3mm layer
Compressive Strengths (N/mm2 -1 day >9.0
7 days >20.0
28 days >30.0
Flexural Strengths:
(N/mm2 – to BS EN 13892-2)
1 day >2.0
7 days >6.0
28 days >10.0
20kg of GYP-LEVEL powder mixed with 4.0 litres of water will cover as follows:
4.0M2 at 3mm depth
2.0M2 at 6mm depth
1.0M2 at 12mm depth
Application Temps:>5’C and <35’C
Pack size:20kg
Compatible substrates:
✓ Tilebackerboards
✓ Existingceramic&stonetiles
✓ Anhydritescreeds*
✓ PlywoodOverlay
✓ Under-floorheating
✓ EpoxyDPM

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