DCI 400 LFT is a cementitious (C), improved (2), non-slip (T), extended open time (E), deformable (S1) adhesive of class C2TES1. DCI 400 LFT can be used on walls and floors for thin-layer and medium-layer installations of tiles and stone material.
DCI 400 LFT
DCI 400 LFT highly deformable cementitious adhesive with no vertical slip and extended open time for ceramic and porcelain stoneware tiles.
Product Description
Field of Application
• Per uso interno ed esterno
• Per pavimenti e rivestimenti
• Adatto per piscine
• Per installazioni a strato sottile e medio di tutti i tipi di piastrelle
• Adatto per la posa di piastrelle di grande formato
• Per spessori fino a 20 mm
• Adatto per l'applicazione su prodotti impermeabilizzanti come Seal Master, Seal Master Elastic, Aquaprotect, ecc.
• Adatto per sottofondi riscaldati
• Per aree ad alto traffico pesante
Dettagli del prodotto
Identità del prodotto
Consistenza: polvere
Colore: bianco o grigio
Densità apparente (kg/m³): 1250
Contenuto di solidi secchi (%): 100
Granulometria massima: 0,6 mm
Classificazione: EN 12004 e EN 12002
Dati di applicazionei (a +23°C e 50% U.R.)
Rapporto di miscelazione: 100 parti DCI 400 LFT con 28-30 parti in peso di acqua
Deformabilità: 3,9 mm
Tempo di regolazione: ca. 50 minuti
Verifiche finali
Forza di adesione secondo EN 1348 (N/mm²)
– Forza di adesione iniziale (dopo 28 giorni): 2.26
– Forza di adesione dopo il calore: 2,31
– Forza di adesione dopo l’immersione in acqua: 2.22
Application Procedure
Preparazione del supporto
The substrate must be cured, mechanically resistant, free from loose particles, grease, paint, oils, waxes, and completely dried. Concrete substrates must not undergo shrinkage after laying the tiles. During the spring and summer, mortars must be cured for at least one week for each centimeter of thickness, and cement screeds must be cured for at least 28 days unless they have been made with special DCI binders for screeds such as Massetto 80, Level S10 , or Level S30 . Gypsum substrates and anhydrite screeds must be perfectly dry (maximum residual humidity 0.5%), sufficiently hard and free of dust. They must be treated with DCI Grip Primer or Beton Contact, while areas subject to high humidity must be treated with Primer CTA.
Preparazione del prodotto
DCI 400 LFT must be mixed with clean water until a homogeneous mixture is obtained. After 5-10 minutes of rest, the mixture must be mixed again. After this, the product is ready for use. The water requirement to be used is approximately 29-31% DCI 400 LFT (equal to approximately 7.25-7.75 liters of water). The mixture prepared in this way can be worked for at least 4 hours.
Applicazione del prodotto
DCI 400 LFT is applied to the substrate with a notched trowel. Choose a trowel that will provide at least 65-70% coverage of the back of the tiles for walls or interiors with low foot traffic. For high-traffic areas, tile coverage must be 100%. To achieve good adhesion to the substrate, we recommend the following system: first apply a thin layer of DCI400 LFT using the smooth side of the trowel, and immediately afterward apply the desired thickness of DCI400 LFT using the notched side of the trowel.
Posa delle piastrelle
It is not necessary to wet the tiles before installation; however, since the backs are very dusty, they should be cleaned with clean water. The tiles are installed under constant pressure to ensure good contact with the adhesive. The open time of DCI 400 LFT at normal temperatures and humidity is 20-30 minutes. Adverse weather conditions (high temperatures, strong sun, dry winds) or a highly absorbent substrate can reduce the open time, in some cases even drastically, to just a few minutes. For this reason, continuous checks should be made to see if the adhesive is still fresh to the touch or has formed a thin crust on the surface. If this has formed, the adhesive should be reworked with a trowel. It is not advisable to wet the adhesive once it has formed a skin, as instead of dissolving, it will form a non-adhesive film. Adjusting the tiles, if necessary, must be done within 60 minutes of installation, after which adjustment becomes problematic. Tiles laid with DCI 400 LFT must not be subjected to rain for at least the first 24 hours and must be protected from frost and direct sunlight for at least 5-7 days after application.
Applicazione della malta
Mortar application can be carried out after a minimum of 8 hours of curing at 23°C and 50% relative humidity for walls and after a minimum of 24 hours of curing at 23°C and 50% relative humidity for floors. Conditions can significantly affect the setting and curing time.
DCI 400 LFT 