Technical data sheet LIGHTFLEX® Flexible and extra-light multi-function tile adhesive S1
Material number
Contents
Unit of quantity
Packaging
Colour
201005010
15
KG
Bag
Cement grey
Product features Cementitious lightweight adhesive C2 TE S1 after DIN EN 12004 Contains lightweight filler High slump resistance Reduction in dust High yield Can be walked on and joined after ca. 24 hours
Advantages Tested system product Very high yield Extremely non slump - even with heavy tiles and boards on walls
Areas of application for laying ceramic tiles and boards using thin-bed, medium bed and flow-bed laying for heated and unheated substrates For walls and floors For interior and exterior use
SCHOMBURG GmbH & Co. KG · Aquafinstr. 2–8 · D-32760 Detmold (Germany) · Tel. +49-5231-953-00 · Fax +49-5231- 953-333 · schomburg.com 1/4
30/01/2025
Technical data sheet LIGHTFLEX® Existing test certificates Test report in accordance with DIN EN 12004 EMICODE licence AgBB certificate Reaction to fire classification report
Technical Data Material properties Base material
Classification of the reaction to fire in accordance with DIN EN 13501-1
sand cement Additive Lightweight filler A1
Mixing Increased flexibility (deflection of ≥ 5 mm) Maturing time Water addition
UNIFLEX-F quantity addition: 5 kg on 25 kg container + 2.2 l water approx. 3 minutes approx. 7.4 l - 10.8 l
Application Consumption pro m² and mm layer thickness Foot traffic after Consumption with 6mm notched trowel Consumption with 8mm notched trowel Consumption with 10mm notched trowel Application temperature Hardening time / full resilience Open time Adhesive open time (min.)
approx. 0.62 kg/m² approx. 24 hours 1.3 kg/m² 1.8 kg/m² 2.2 kg/m² approx. 5 - 25 °C approx. 7 days approx. 30 minutes ≥ 30 minutes
Processing equipment Aids/tools Toothed trowel Stirrer Trowel
Suitable substrate Firmly adhering tiled finishes Concrete, cement screed (CT), floor levelling compounds, calcium sulphate screeds (CA, CAF), mastic asphalt screeds (AS), magnesia screeds (MA) Cement-based plaster, gypsum plaster, cement-lime plaster, lightweight plaster Tile bearing elements, gypsum fibre boards, gypsum boards, raised floors, cement and fibre cement boards, decoupling mats & panels, dry screeds Bonded waterproofing; the suitability of the substrate must be checked and observed, taking into account the planned water impact class of DIN 18534 and DIN 18531.
SCHOMBURG GmbH & Co. KG · Aquafinstr. 2–8 · D-32760 Detmold (Germany) · Tel. +49-5231-953-00 · Fax +49-5231- 953-333 · schomburg.com 2/4
Technical data sheet LIGHTFLEX® Preparing the substrate Requirement for substrate 1. 2. 3. 4. 5. 6.
Load-bearing Dry Even Sealed in the surface Free of cracks Free of adhesion inhibiting substances and laitance layers
Measures for substrate preparation The requirements in DIN 18157 - 1 and the recognised technical standards are essential for preparing the application substrates.
Preparing the surface 1. 2. 3. 4.
Check the application substrate and determine the moisture content using the CM method. Remove impurities, adhesion-reducing substances and binder accumulations/laitance layers. Prime absorbent substrates with ASO-Unigrund-GE, ASO-Unigrund-K or ASO-Unigrund-PLUS. Prime non-absorbent substrates with ASO-Unigrund-S or ASO-Unigrund-PLUS.
Moisture content of the CM measurement
Application Mixing 1. Put the water into a clean mixing bucket and mix with the powder component with a stirrer to produce a homogeneous, lump-free mass. 2. After a settling period of ca. 3 minutes, thoroughly homogenise the compound again. 3. Do not mix more material than can be applied during the pot life.
Application 1. Spread the mixed mortar evenly across the substrate surface and comb through with a suitable notched trowel to suit the board size. 2. Apply the surfacing materials within the adhesive open time.
Storage conditions Storage Store in a cool and dry place. Min. 12 months in the original canister. Promptly use opened container.
Disposal Must not be disposed of in household waste. Do not allow to enter the sewer system.
Emission behaviour / building certification systems Very low emissions in accordance with GEV-EMICODE, which normally results in positive evaluations within the scope of building certification systems in accordance with DGNB, LEED, BREEAM, HQE. Maximum quality level 4, line 8 in accordance with DGNB criteria "ENV 1.2 Risks to the local environment".
SCHOMBURG GmbH & Co. KG · Aquafinstr. 2–8 · D-32760 Detmold (Germany) · Tel. +49-5231-953-00 · Fax +49-5231- 953-333 · schomburg.com 3/4
Technical data sheet LIGHTFLEX® Notes When laying natural stone and synthetic stone, the product-specific properties of the coating materials (tendency to discolour, risk of curling, etc.) and the laying recommendations of the manufacturer must be taken into account. We recommend carrying out trial laying! Rooms, surfaces and building components that expect water exposure after DIN 18534, DIN 18531 and DIN 18535 must be protected by bonded waterproofing. Calcium sulphate screeds must be protected with the ASO®-Unigrund-GE, ASO®-Unigrund-K or ASO®-Unigrund-PLUS primers prior to laying. Calcium sulphate screeds must be protected with a barrier primer (e.g. ASODUR®-GBM) when laying large format tiles. Do not stir or add water to existing material that has already set in order to make it workable again. Use a barrier primer such as ASODUR®-GBM to protect substrates that are sensitive to moisture, such as magnesite screeds, from direct contact. Protect the product from water, frost, draughts, direct sunlight and mechanical loads until it has dried completely.
Relevant regulations Planning, inspection of substrates and building site circumstances, laying, grouting and subsequent care of the work must be done in accordance with the relevant DIN standards and recognised rules of technology (e.g. the ZDB sheets of the Zentralverband Deutsches Baugewerbe e.V.) in the latest version. Observe applicable safety data sheet! GISCODE: ZP1 Explanations Conformity / Declaration / Verification
The rights of the buyer with regard to the quality of our materials are based on our terms and conditions of sale and delivery. Our technical advice team will be happy to advise you in the case of requirements that exceed the scope of the application described here. In order to be binding, a legally binding written confirmation is required. The product description does not release the user from a duty of care. Lay a test area in the event of uncertainty. This version becomes invalid in the event of a new version being issued.
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