Product information Tile adhesives/Thin-bed mortars
LIGHTFLEX® Multifunctional flexible adhesive grey, C2 TE S1
Application/ substrate temperature:
+5°C to +25°C
Open time*:
approx. 30 mins
Foot traffic/ready to grout*:
after approx. 24 hrs
Consumption:
approx. 1.3 kg/ m² with a 6 mm notched trowel approx. 1.8 kg/ m² with an 8 mm notched trowel approx. 2.2 kg/ m² with a 10 mm notched trowel
approx. 1.9 kg/ m² with an 8 mm Flowline trowel approx. 2.7 kg/ m² with a 10 mm Flowline trowel approx. 3.2 kg/ m² with a 12/20 mm medium bed trowel
Full service conditions*:
after approx. 7 days
Reaction to fire:
A1/A1fl
Packaging:
15 kg plastic bag
*at +20 °C and 65 % relative humidity
SCHOMBURG GmbH & Co. KG Aquafinstrasse 2–8 D-32760 Detmold 04 2 01005 EN 12004 LIGHTFLEX® Cement-based adhesive with increased performance for the installation of tiles in interior and exterior areas C2 Reaction to fire: Bond strength, as Tensile adhesion after dry ageing: Durability, as Tensile adhesion strength after water immersion: Tensile adhesion strength after heat ageing: Tensile adhesion strength after freeze/thaw cycles:
Class A1/A1fl ≥ 1 N/mm²
≥ 1 N/mm² ≥ 1 N/mm² ≥ 1 N/mm²
SCHOMBURG GmbH & Co. KG Aquafinstrasse 2–8 D-32760 Detmold (Germany) phone +49-5231-953-00 fax +49-5231-953-108 email export@schomburg.de www.schomburg.com
TS/CoS/JD
As a thin-bed adhesive: 7.5 – 8.1 litres water: 15 kg LIGHTFLEX® As a medium-bed adhesive: 7.4 – 7.9 litres water: 15 kg LIGHTFLEX® As a smoothing mortar: 7.4 – 7.9 litres water: 15 kg LIGHTFLEX® As a flow-bed adhesive: 10.2–10.8 litres water: 15 kg LIGHTFLEX®
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Areas of application: • LIGHTFLEX® is an extremely high yield, variable use thin-bed, medium-bed or flow-bed flexible adhesive for the installation of large format porcelain (also on walls), vitrified and earthenware tiles and other ceramic finishes, mosaics and natural stone, that is not sensitive to discolouration nor is translucent. • LIGHTFLEX® can also be used for the preparation of substrates as a levelling compound or repair mortar at thicknesses up to 15 mm. • LIGHTFLEX® is suited for tiling to all substrates in accordance with DIN 18157, part 1, e.g. concrete, aerated concrete, plaster/render, cement-based and calcium sulphate based heated and unheated (flow) screeds, masonry work, moisture resistant plasterboard and gypsum fibre boards, composite materials in expanded or extruded polystyrene with a mortar coating and reinforcement layer embedded, etc. • F or tiling over mineral-based or dispersion-based SCHOMBURG bonded waterproof membranes.
Mixing ratio:
Subject to changes. Consult current technical data sheet for most recent information.
Technical Data:
2 05023
LIGHTFLEX® Multifunctional flexible adhesive grey, C2 TE S1 Properties: • 4 in 1 Thin-bed, medium-bed and flow-bed adhesive as well as repair and levelling mortar up to a thickness of 15 mm • Good sag resistance • Up to 90% reduced dust* • Up to 65% greater coverage* • Especially easy to use with greater yield • For large format porcelain tiles incl. walls • For heated screeds • For interior and exterior use • Tested to DIN EN 12004 C2 TE DIN EN 12002 S1
ve
ry
1 Cleaned, load-bearing substrate ready for tiling
2 Priming the substrate, e.g. with ASO®-Unigrund
3 Adding the adhesive to a clean mixing bucket
4 Mixing the adhesive
5 Setting out the wall
6 Combing out the adhesive bed
7 Fixing the wall tiles
8 Priming the substrate, e.g. with ASO®-Unigrund
9 Setting out the floor
10 Combing out the adhesive bed
12 Laying the floor tiles
13 Finished area ready for use
Mixing ratio: highly deformable (relates to class C2 S2, deformation > 5 mm): 4.17 kg UNIFLEX®-B : approx. 4.0 litres water : 15 kg LIGHTFLEX®. Application: The substrate must be dry, load bearing sufficiently flat and free from penetrating cracks and separating substances such as oil, paint, laitance and loose components. The substrate surface must have a largely closed texture and its condition must be appropriate for its type. For tiling, the substrate, its preparation and product application must conform to DIN 18157, part 1. Prime absorbent substrates with ASO®-Unigrund. Heated floors are to b e heated prior to installing tiles. The readiness of a substrate to receive finishes is to be determined by the carbide (CM) method and may not fall below the following values: •CT ≤ 2.0% (when installing large format tiles 1.5%) •CA/CFA unheated ≤ 0.5%, heated ≤ 0.3%
io n
* compared with conventional cement-based adhesives without lightweight aggregates
Product preparation: Mix LIGHTFLEX with clean water in a clean mixing bucket until homogenous. Mixing ratio: • as a thin-bed adhesive: 7.5 – 8.1 litres water: 15 kg LIGHTFLEX® • as a smoothing mortar: 7.4 – 7.9 litres water: 15 kg LIGHTFLEX® • as a mesium-bed adhesive: 7.4 – 7.9 litres water: 15 kg LIGHTFLEX® • as a flow-bed adhesive: 10.2 – 10.8 litres water: 15 kg LIGHTFLEX® Allow to stand for 4 minutes, then mix thoroughly through once again. When using as a flow-bed adhesive firstly mix LIGHTFLEX® with approx. 8 litres of water and subsequently mix in the remaining water until a pourable consistency is achieved. Do not mix more material than can be used within the pot life. Spread the mixed adhesive over the substrate and dependent on the tile format comb through with the appropriate notched trowel. Fix the finishing material within the adhesive open time. When installing large format tiles, we recommend that LIGHTFLEX® is modified with UNIFLEX®-B. Modification with this elastifier improves the deformability and tensile adhesion of LIGHTFLEX®. Dependent on the level of modification, S2 deformation class can be achieved which is particularly recommended for larger tiles. This considerably compensates for shear stresses, which can lead to delamination in unfavourable exterior conditions. UNIFLEX®-B is mixed with water for improved application and then mixed with LIGHTFLEX® until homogenous.
l o w e m iss
11 Applying a contact layer with large format tiles