Bostik Cempolay Self Levelling Compound 20kg
| 10+ bags | 20+ bags | 30+ bags |
| £13.85ex. VAT | £13.71ex. VAT | £13.57ex. VAT |
Quick-setting, smooth self-levelling compound ideal for internal subfloors up to 6mm. Compatible with concrete, sand/cement screeds, and unglazed ceramic tiles. Sets within 2-4 hours.
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Mon 10 Nov
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- 17hrs
- 44mins
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Product Overview
Quick-setting, smooth self-levelling compound ideal for internal subfloors up to 6mm. Compatible with concrete, sand/cement screeds, and unglazed ceramic tiles. Sets within 2-4 hours.
Delivery & Returns Information
How Our Delivery Works
We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery Areas & Charges
Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, EH, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, SA, SY & TD
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.
Standard (Nationwide) Delivery
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Core Products Core
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|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 ex. VAT | £20 ex. VAT |
| Over £300 ex. VAT | FREE |
Core Delivery charges apply only when all products in an order that have equivalents are accepted as such. If even one product cannot be substituted with an equivalent, the entire order will not qualify for Core Delivery charges.
| Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £100 | £20 ex. VAT |
| Between £100 - £300 ex. VAT | £10 ex. VAT |
| Over £300 ex. VAT | FREE |
| Insulation, Plasterboard and Drylining Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £350 | £35 ex. VAT |
| Over £350 ex. VAT | FREE |
| Screws & Fixings and Adhesives & Sealants | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £50 | £5 ex. VAT |
| Over £50 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £50 ex. VAT |
| Over £400 ex. VAT | £35 ex. VAT |
| Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products | |
| ORDER VALUE | DELIVERY CHARGE |
| Under £300 | £50 ex. VAT |
| Over £300 ex. VAT | £35 ex. VAT |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{more_time}} Fast levelling
- {{snowshoeing}} Quick walk-on
- {{calendar_view_day}} Smooths and levels internal subfloors
- {{gpp_good}} Protein-free, hygiene-safe
Technical Specification
| Bag Type: | Paper |
|---|---|
| Bag Size: | 20kg |
| Sales Unit: | Bag |
| Sales Unit Coverage: | 20kg |
| Brand: | Bostik |
| Weight: | 20kg |
| Colour: | Grey |
| Status: | Non-Returnable |
Technical Downloads
Product Overview
Bostik Cempolay Self Levelling Compound supplied in a 20kg bag. A polymer-modified, protein-free cementitious smoothing compound formulated for levelling uneven internal subfloors prior to installing decorative floor coverings.
When mixed with approximately 4 litres of clean water, it produces a free-flowing slurry that rapidly finds its own level, eliminating ridges and hollows to create a uniform surface. The compound remains workable for 15-20 minutes at 20 °C and accepts light foot traffic within 2-4 hours, with most floor coverings suitable for installation after around 16 hours.
Its protein-free composition prevents bacterial growth, ensuring suitability for hygiene-critical environments such as hospitals, food-processing zones, and commercial kitchens.
Designed exclusively for dry, internal use on concrete, sand/cement screeds, stone, or firmly bonded unglazed ceramic tiles, it must always be overlaid with a decorative finish and is not suitable for calcium-sulphate screeds, adhesive residues, underfloor heating, or use as a wearing surface.
Features & Benefits
- Polymer-Modified Formulation: Enhances adhesion, flexibility, and surface strength on a wide range of internal substrates.
- Quick Setting: Allows light foot traffic in as little as 2–4 hours, reducing project downtime.
- Self-Levelling Action: Flows freely to eliminate ridges and hollows, creating a smooth, even surface with minimal trowelling.
- Protein-Free Composition: Contains no casein or protein, ensuring it does not support bacterial growth and is suitable for hygiene-sensitive areas.
- Ease of Application: Mixes readily with water to form a lump-free slurry with a working time of 15–20 minutes for efficient use.
- Internal Use Only: Formulated solely for dry, internal areas where moisture exposure is controlled.
Applications
- Concrete Subfloors: Provides a smooth, level finish ready for floor covering installation.
- Sand/Cement Screeds: Corrects uneven surfaces to ensure an even substrate.
- Unglazed Ceramic Tiles: Can be applied directly over firmly bonded unglazed tiles to achieve a flat, uniform layer.
- Hygiene and Food Preparation Areas: Ideal for environments requiring resistance to bacterial growth.
- Interior Use Only: Designed exclusively for dry, internal applications.
- Exclusions: Not suitable for calcium-sulphate screeds, underfloor heating systems, or as a final wearing surface.
Installation Guidance
- Surface Preparation: Ensure the substrate is clean, dry, sound, and free from dust, grease, or loose material.
- Mixing: Combine the 20 kg powder with approximately 4 litres of clean water until a smooth, lump-free consistency is achieved.
- Application: Pour the mixed compound onto the prepared surface; it will self-level naturally, with a trowel used as needed to assist flow.
- Curing: Allow to cure before applying further finishes; suitable for light foot traffic within 2–4 hours at 20 °C and generally ready for floor coverings after 16 hours.
- Final Finish: Always overlay with an appropriate decorative floor covering once cured.
Compliance & Performance
- Material Composition: Polymer-modified, protein-free, cement-based compound formulated for internal subfloor levelling.
- Working and Setting Time: Workable for 15–20 minutes at 20 °C; foot traffic permissible after 2–4 hours.
- Floor Covering Readiness: Accepts most resilient, textile, or timber coverings after approximately 16 hours.
- Substrate Suitability: Compatible with concrete, sand/cement screeds, stone, and bonded unglazed ceramic tiles.
- Restrictions: Not suitable for calcium-sulphate screeds, adhesive residues, underfloor heating, or as a final wearing surface.
- Important Note: For internal dry areas only. Always follow the manufacturer’s technical data sheet for precise mixing ratios, application conditions, and curing guidance.
