CERESIT CL 51 EXPRESS 1-K

  • Waterproof
  • Fast drying (Tiling after 4 hrs)
  • Crack-bridging

Features and benefits

Flexible one-component sealing film for application under tiles and slabs, suitable for domestic wet areas indoors.

Properties

Description

CERESIT® CL 51 Waterproofing coating is a 1-component membrane that provides excellent results in substrate preparation for tiling. CL 51 is recommended for use under ceramic tiles in humid areas such as bathroom, kitchen, toilets. It is suitable to be used in systems with floor heating. Easy and simple use, fast drying CL 51 provides tiling ready substrate only 4 hours after applying second coating layer.Available pack size: 5 kg and 15 kg

Documents and downloads

How to use

CERESIT Tiling CE60 LP Instructions Illustration Step 1

SUBSTRATE PREPARATION FOR APPLICATION OF CL 51

CERESIT CL 51 is applicable to all solid, wearable, stable and clean substrates which are ready for laying ceramics and cleaned from bonding affecting substances (e.g. separating agents, particles, dust, grease or dirt). The upper surface must be sufficiently flat and without cracks.

CERESIT Tiling CE60 LP Instructions Illustration Step 2

APPLICATION OF CERESIT CL 51

Apply CERESIT CL 51 undiluted using a brush, roller or trowel. Two coats are necessary to create waterproof layer. The second layer can be applied after 2 hours from the application of the first layer. After approximately 4 hours (depending on the installation conditions) substrate is ready for tiles installation. 

CERESIT Tiling CE60 LP Instructions Illustration Step 3

HANDLING AFTER THE APPLICATION OF CERESIT CL 51

After making sure that second layer of CERESIT CL 51 is dried and dependable on the installation conditions, proceed with the tile installation by using flexible tiles adhesives CM 16 or CM 17, CM 12 and CM 2 It is recommended to always secure joints and edges with sealing tape CERESIT CL 152, sealed to the first layer and covered by second layer of CL 51. 

Related how to guides

  • Premium Tiling System
    Providing Tiling Solutions
  • Laying Large Tiles
    Laying Large Tiles
  •  Preparation – testing the substrate
    Preparation – Testing The Substrate
  • Terraces, balconies and patios
    Terraces, Balconies And Patios
  • Bathrooms & Kitchens
    Bathrooms & Kitchens
  • Swimming & Wellness
    Swimming & Wellness
  • Tiling In Industrial Buildings
    Tiling In Industrial Buildings
  • Solutions For Special Formats & Substrates
    Solutions For Special Formats & Substrates
  • Heated floor systems
    Heated Floor Systems
  • Sound-reduction / Decoupling System
    Sound-reduction / Decoupling System

Related products

  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cl-152/SAP_0201SMC013Q6/searchResult.productFields.MainImageAltText}
    CERESIT CL 152
    Sealing tape for the waterproof bridging of expansion and connection joints up to 120 mm width, suitable for indoor and outdoor application. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cm-17/SAP_0201SBC013W2/searchResult.productFields.MainImageAltText}
    CERESIT CM 17
    Premium, flexible tile adhesive with high adhesive strength for all kind of tiles on difficult substrates and for large tiles. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cm-22/SAP_0201SBC013W5/searchResult.productFields.MainImageAltText}
    CERESIT CM 22
    Special tile adhesive for application of large format plates on difficult substrates, suitable for heated floors and balconies. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cl-82/SAP_0201SMC013R6/searchResult.productFields.MainImageAltText}
    CERESIT CL 82
    Sealing tape for the waterproof bridging of expansion and connection joints up to 120 mm width, suitable for indoor and outdoor application. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cm-16/SAP_0201SBC013T8/searchResult.productFields.MainImageAltText}
    CERESIT CM 16
    Tile adhesive mortar for ceramic tiles, suitable for wet areas, walls and floors, inside and outside. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cm-11-plus/SAP_0201SAC013S4/searchResult.productFields.MainImageAltText}
    CERESIT CM 11 PLUS
    Tile adhesive for indoor & outdoor (with limitations) applications of gres and ceramic tiles on wall and floor. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/interoir-finishing/central-pdp#/ceresit-ct-17/SAP_0201JAC014F1/searchResult.productFields.MainImageAltText}
    CERESIT CT 17
    Primer for surface strengthening of all absorbent substrates for indoor and outdoor application, prior to fixing ceramic tiles, pouring floors or fixing thermal insulation boards. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cm-49-white/SAP_0201SCC013X1/searchResult.productFields.MainImageAltText}
    CERESIT CM 49 WHITE
    Special mega flexible (S2) white tile adhesive for demanding substrates, ideal for large-format tiles, young screeds and natural stone. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/waterproofing/central-pdp#/ceresit-cr-100/SAP_0201WHC014B8/searchResult.productFields.MainImageAltText}
    CERESIT CR 100
    Waterproofing coat for horizontal and vertical substrates of buildings, structural elements and tanks (≤ 7.5 m), as well as for internal waterproofing of monolithic water tanks. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cl-83/SAP_0201SMC013R7/searchResult.productFields.MainImageAltText}
    CERESIT CL 83
    Wall sealing collar for the reliable sealing of pipe passages of 15 mm, suitable for indoor and outdoor application. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-cl-150/SAP_0201SMC013Q5/searchResult.productFields.MainImageAltText}
    CERESIT CL 150
    Self-adhesive butyl tape for vertical and horizontal surfaces, used for reinforcing flexible insulation in ceramic tiles. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-ce-60/SAP_0201SHC016K6/searchResult.productFields.MainImageAltText}
    CERESIT CE 60
    High quality and ready-to-use grout for joints up to 6 mm in width. 100% stable colors, very high dirt and stain resistance. 
  • ${/content/heliux/adhesive/ceresit/com/en/products/tiling/central-pdp#/ceresit-ce-40/SAP_0201SGC013M9/searchResult.productFields.MainImageAltText}
    CERESIT CE 40
    Water-resistant, flexible, grout mortar for porcelain, ceramic, glass, natural stones and marble tiles from 1 up to 8 mm width. 

Frequently asked questions

CERESIT CL 51 is a waterproofing coating, super flexible and fast drying and it is used for sealing under the ceramic tiles in humid and wet conditions, such as bathrooms, toilets and kitchens. CL 51 is suitable for application on different substrates types.

CERESIT CL 51 is not suitable for use in swimming pools, as well as on surfaces that are in a constant contact with water, old ceramic tiles, asphalt concrete and painted surfaces.

Use CERESIT CL 51 only in dry conditions and at temperatures of +5 °C to +30 °C. All listed data were measured at temperatures of +23°C and relative humidity of 50%. Rear surface moisture and exposure to chemicals must be permanently excluded. CL 51 adheres to all dry, solid, load-bearing, dimensionally stable, clean surfaces which are ready for covering and free of substances which can cause separation. Depending on weather conditions, drying and curing of CL 51 can be faster or slower.