Bostik Cementone Freeflo – 5L / 25L

£10.68

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A 3-in-1 liquid admixture for cement render mixes, Bostik Freeflo waterproofs, retards setting time, and improves workability. Ideal for pebble dashing, roughcast, and above-ground waterproof rendering. Chloride-free and easy to dilute for efficient, large-area application.

Size

5 Litre 25 Litre

Product variants

Delivery and Shipping

Place your order before 3pm for next working day delivery.

Please note: Additional delivery charges may apply for Northern Ireland, Isle of Wight, Isle of Man, Isles of Scilly, Scottish Highlands & Islands, and Channel Islands. We will contact you to inform you of any additional costs once your order is received, or you can call us on 0800 111 4898 beforehand to confirm.

Description

Triple-Action Admixture: Waterproofs, Retards & Plasticises

Bostik Cementone Freeflo is a pigmented, thixotropic liquid admixture designed to improve the performance of cement-based mixes. Developed for rendering, pebble dashing, roughcast, and harling applications, it combines three essential functions in one: waterproofing, plasticising, and setting retardation.

Its extended working time allows larger areas to be rendered in one go, reducing waste and increasing efficiency. Freeflo also enhances workability through air entrainment and is chloride-free, making it suitable for above-ground applications where reinforcement corrosion is a concern.

Key Features & Benefits

3-in-1 Function: Waterproofs, retards, and plasticises cement:sand mixes
Improved Workability: Air-entraining formula provides a smoother, more manageable mix
Extended Open Time: Slows setting for larger jobs or warmer weather conditions
Chloride-Free: Compatible with steel-reinforced render surfaces
Ready to Dilute: Mixes easily with water and integrates into standard cement mixes

Typical Applications

Pebble dashing backing coats
Roughcast or harling render systems
External cement render over brick or blockwork
Above-ground waterproofing renders exposed to driving rain

Technical Specifications

Form: Viscous liquid
Colour: Orange
Specific Gravity: ~1.02
Mix Ratio: 1 part Freeflo to 30 parts water by volume
Shelf Life: 15 months unopened
Storage: Store between +5 °C and +25 °C in dry, frost-free conditions

Application Guidelines

Ensure surfaces are clean and free from grease, dirt, or loose particles
Pre-dilute Freeflo at a ratio of 1:30 with clean water
Add to the cement:sand mix during the gauging phase
Mix thoroughly and apply using standard rendering techniques

Comparison: Freeflo vs Other Cement Additives

Feature / Product	Bostik Freeflo	Integral Waterproofer	SBR Bonding Agent	Standard Plasticiser
Waterproofing Function	✔ Above ground	✔ Above ground	✘	✘
Retarder / Slows Set Time	✔ Yes	✘	✘	✘
Plasticising / Workability	✔ Yes	✔ Slight	✔ Excellent	✔ Yes
Air Entrainment	✔ Yes	✔ Yes	✘	✔ Yes
Chloride-Free	✔ Yes	✔ Yes	✔ Yes	Varies
Ideal For	Rendering, dashing, harling	General waterproof render & screed	Bonding over concrete & tanked walls	Bricklaying & mortar softening
Below Ground Use	✘ No	✘ No	✔ In systems	✘ No

Safety & Handling

Classified as irritant—avoid skin and eye contact
Use protective gloves and goggles
In case of contact, rinse immediately with clean water
Do not discharge into drains or watercourses

Bostik Freeflo is your all-in-one solution for exterior cement render jobs where water resistance, improved workability, and longer open time are essential. Ideal for pebble dashing and roughcast in changing site conditions.