TECHNICAL FEATURES:

BENFERFLEX+S1 is an adhesive in powder, consisting of cements, graded particle size aggregates, synthetic resins and special additives. It has been formulated and
developed for rapid, reliable installation of almost the totality of ceramic material, even on non-absorbent substrates and onto substrates subject to slight dimensional variation.
The high resistance to vertical sliding allows to tile from the top down. Thanks to its particular composition, BENFERFLEX+S1 can be mixed with a higher percentage of
water to allow for complete “wetting” of the back of the tiles, even on large size formats, with no need for double buttering.

AREAS OF APPLICATION:

Laying of porcelain tiles, thin ceramic slabs, non absorbent single-fired tiles, double-fired
tiles, and natural stones (water stable), even large size, and glass mosaic in:
• Interior and exterior walls and floors
• Heavy duty areas
• In conjunction with ACQUASHIELD waterproofing systems
• On top of old wall and floor tiles

SUITABLE SUBSTRATES:
• Concrete
• Cement-based screeds, standard or heated with water system
• Cement-based plaster
• Flexible waterproofing membranes made up of cement and polymers (ACQUASHIELD-2KF)
• Cement based blocks
INSIDE ONLY:
• Fluid cement-based screeds (prior application of an appropriate primer if demanded), standard
or heated with water system
• Fluid anhydrite-based screeds (prior application of an appropriate primer), standard or heated
with water system
• Old ceramic tiles
• Standard or waterproof plasterboard
• Elastomeric waterproofing membranes (ACQUASHIELD-GEL)
• Cement-based and gypsum-based boards (prior application of an appropriate primer)

MAXIMUM SIZES:
• Internal floors with maximum length of longest tile side up to 360 cm
• External floors with maximum length of longest tile side up to 120 cm
• Internal walls coverings with maximum length of longest tile side up to 360 cm
• External walls coverings with maximum length of longest tile side up to 90 cm

METHODE OF USE:
SUBSTRATES PREPARATION:
The substrates must be solid, load-bearing, free from oil, grease and dust. Any paint-work
must be in good condition, washed and degreased. If this is not the case, the paint must be
carefully removed. Gypsum or calcium sulphate based substrates must be previously treated with
BENFERPRIM. Absorbent substrates must be treated with BENFERPRIM.
MIXTURE PREPARATION:
Mix BENFERFLEX+S1 in a clean mixing bucket with clean water until homogenous.
Mixing ratio:
• As thixotropic adhesive 8.0 litres of water: 25 kg BENFERFLEX+S1
• As flow-bed adhesive 9,5-10 litres of water: 25 kg BENFERFLEX+S1
Allow to stand for 2 minutes, then re-mix.
Do not mix more BENFERFLEX+S1 than can be used within the pot life.

CLEANING: Tiling should be cleaned with a damp cloth or sponge when the adhesive has
already startedto set.
CONSUMPTION: The consumption changes according to planarity of the support, to the used
trowel and to the laying system.

PACKAGING: BENFERFLEX+S1 is available in 25 kg poly-coated paper bags on europallet of
1.050 or 1.500 kg.
STORAGE: In the original closed package in a cool dry place.
SHELF LIFE: 12 months from the date printed on the packaging.

PRODUCT TECHNICAL DATA
Classification EN 12004: C2TES1
Basis: Cement, aggregates, additives
Colour: Extra white and grey
Apparent mass volume: 1,1 kg/m3
Maximum grain size: 0,3 mm
Storage and Duration: 12 months in the original closed package in a cool dry place
Danger of harm: No, Possible irritation of the eyes and skin upon contact
Flammability: No
Mixture ratio: 32%, 8 lt water/25 kg bag;
38-40%, 9,5-10 lt for 25 kg bag (flow bed)
Mixture consistency: Cream
Mass volume of paste: 1,7 kg/dm3
Application temperature: From + 5° C to + 35° C
Pot Life: About 3 hours*
Open time: 30 minutes*
Vertical slip according to EN1308: < 0,5 mm
Maximum thickness: 20 mm
Foot traffic: 12 hours*
Grouting: 12 hours*
Full service conditions after: 7 days*
Final hardening: 28 days*
Final performance:
Adhesion at start (after 28 days): > 1,0 N/mm2
Adhesion after warming: > 1,0 N/mm2
Adhesion after water immersion: > 1,0 N/mm2
Adhesion after frost-thaw cycles: > 1,0 N/mm2
Deformable according to
DIN EN 12004 (medium): 2,8 mm
Temperature resistance: From -30 °C to +90 °C