Product Codes

  • Grey 30620341


Approx. 2.3m2 per bag at 5mm depth. Approx. 1.2m2 per bag at 10mm depth. Approx. 0.6m2 per bag at 20mm depth Approx. 0.25m2 per bag at 50mm depth (depending on the smoothness of the floor surface & application technique)
Blend of cement, organic binders and fillers
+5°C to +25°C
5mm to 50mm
Up to 20 minutes after mixing (depending on ambient temperatures)
Foot traffic: approx. 1½ hours (5mm depth at +20°C) & 3 to 4 hours at +10°C. Ceramic tiles: approx. 3 to 4 hours (<10mm depth at +20°C). Minimum 24 hours (>10mm depth at +20°C). Textile & vinyl coverings: approx. 24 hours per 10mm depth at +20°C
Store and transport securely. Store for up to 6 months from date of manufacture in original, unopened packaging, clear of the ground, in cool, dry conditions within the temperature range +5°C to +25°C and out of direct sunlight. Protect from excessive drafts, frost, damp, condensation and dew.
Dry, free-flowing powder
Typically 38N/mm² after 28 days
Typically 5N/mm² after 28 days
Clean tools and equipment with warm soapy water immediately after use

Key Features

High strength, abrasion resistant smoothing compound
Suitable for industrial premises
Finished wearing surface when used without floor coverings


Bostik SL C951 DEEP is a protein-free, high-strength, rapid drying & hardening smoothing compound suitable for applications 5mm to 50mm deep in a single application. It is used for self-levelling, raising floor levels, forming slopes and ramps. Bostik SL C951 DEEP can be laid over most common substrates, including concrete, sand/cement screeds, stone, anhydrite*, terrazzo & quarry tiles, unglazed ceramic tiles and other solid and rigid subfloors. Bostik SL C951 DEEP should not be used over adhesive residues or existing smoothing compounds. As Bostik SL C951 DEEP is protein-free, it is suitable for biologically sensitive areas. It is suitable for use with warm water underfloor heating systems, provided a surface temperature of +27°C is not exceeded and in areas of high solar gain. It is suitable for light to heavy-duty internal applications. It should only be used on subfloors protected from moisture from the ground and residual construction moisture. Do not use before applying surface DPM’s. It is not to be used as a wearing surface and should always be covered with a floor covering. For interior use only.

Case Study
Bostik – Flooring in Healthcare
Bostik – Flooring in Healthcare
Technical advice and quality subfloor preparation products and flooring adhesives from Bostik are said to have enabled the progress of the new hospital building.
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