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Floatmaster is a high performance fill material used in a number of floating applications.

Key Features of Floatmaster

  • Easy to install
  • Lightweight
  • Resistant to moisture
  • Durable
  • High buoyancy factor
  • Excellent compression properties
  • High-strength-to-weight ratio
  • Manufactured from EPS (expanded polystyrene)
  • EPS has an A+ rating in the BRE Green Guide to Specification

The application and will determine the grade and thickness required.

Floatmaster is available in grades 50 to 500 or compressive stresses at 1% strain 10 to 190kPa.

Relevant Applications View our Case Study

Void Former for Pontoon

Floatmaster is an ideal material for the construction of marina pontoons and floating safety booms.

It is manufactured from a closed cell material which offers a high buoyancy factor – approximately 900 kg/m³ when submerged to water level (allowing for self-weight and limited water uptake).

Greenwich Docklands Regeneration

Jablite's revolutionary highly buoyant expanded polystyrene product (EPS) Floatmaster, has proven itself an essential element in the on going regeneration of the Greenwich Docklands.

Contractors River and Marine Ltd was recently asked to create a pontoon, part of a new initiative to promote the use of pleasure crafts and commuter services on the Thames, allowing pedestrian access to the Royal Arsenal at Woolwich. The pontoon not only needed to meet stringent safety guidelines, but also to prove cost effective for clients, Greenwich Borough Council.

Mr Shane Carr, Director of River and Marine Ltd and the designer of the pontoon commented: "We had to ensure that the pontoon would remain safely afloat if punctured by any passing boats, creating a safe platform at all times for a full compliment of passengers. Under normal circumstances we would have had to create 26 separate water tight compartments, consisting of numerous heavy steel bulk heads and plates, making it very heavy and very expensive but on this occasion, I recommended the use of Floatmaster (EPS)."

The pontoon is 32 metres by 10 metres and filled with 531m3 of Floatmaster 70. This lightweight product has tremendous buoyancy capabilities and ensures that if a puncture occurs, the EPS provides sufficient buoyancy, allowing the pontoon to remain stable and level. It was constructed by packing the blocks of Fillmaster tightly together within a steel frame, forming a completely water tight and solid structure.

Mr Shane Carr concluded: "I would definitely use Floatmaster again, as it is easy to use and cost effective, allowing us to reduce build costs without skimping on quality and strength. If we had used a more traditional method for construction, we would have had to use in excess of 20 tons of steel, which could have cost in the region of £30,000. The Jablite product saved us 50% in material costs and provided an ideal solution for both ourselves and our client."

The pontoon will provide a station for the Thames River Boat, allowing visitors to stop and visit the Royal Armoury museum as part of an overall tour of the Docklands and its surrounding attractions.



Jablite Insulation and the Code for Sustainable Homes

The Code for Sustainable Homes (the Code) is the national standard for the sustainable design and construction of new homes. The Code aims to reduce our carbon emissions and create homes that are more sustainable. It applies in England, Wales and Northern Ireland.
A copy of the Code can be found here´╗┐´╗┐.


Mat 01: Environmental Impact of Materials

Jablite insulation products are made from EPS (expanded polystyrene) which has an A+ rating in the BRE Green Guide*.

*The BRE Green Guide to Specification provides you with easy-to-use guidance on how to make the best environmental choices when selecting construction materials and components. 

Environmental rankings:  A+ represents the best environmental performance and E the worst environmental impact.


Jablite Insulation has a Global Warming Potential (GWP) of less than 5 and an Ozone Depletion Potential (ODP) of zero.

The blowing agent used during manufacture is pentane which has zero ODP and a GWP of less than 5.


Jablite Insulation and BREEAM

BREEAM (Building Research Establishment Environmental Assessment Method) sets the standard for best practice in sustainable design and in the measurement of a building's environmental performance. BREEAM enables developers, designers and building managers to demonstrate the environmental credentials of their buildings to clients, planners and other parties,
You can find out more about BREEAM here


In this category, the specified aim of BREEAM is to “recognise and encourage the use of thermal insulation which has a low embodied environmental impact relative to its thermal properties and has been responsibly sourced.”

It is a pre-requisite of BREEAM that any new insulation specified for use within the following building elements must be assessed:
1.    External walls
2.    Ground floor
3.    Roof


Jablite insulation products are made from EPS which has been given an A+ rating by the BRE.

The calculation of embodied impact relative to thermal performance is a function of the material volume (for each build), its BRE Green Guide Rating and its thermal conductivity.

The thermal conductivity of our products is available on both the product packaging and on relevant product technical datasheets which can be found on this website.


Jablite insulation products are manufactured in factories which are ISO 14001 certified and Jablite purchases raw material from suppliers who are ISO 14001 certified.
Key Process (Insulation Manufacture)
ISO 14001: Certificate Number EMS 559414

Supply Chain Processes (supply of materials for end products)
ISO 14001
Certificate Number NL 007629-1 



Jablite Insulation and the Environment


Jablite insulation products are 100% recyclable. We collect waste from building projects and recycle it.

Our manufacturing process

All Jablite insulation products are manufactured at sites with ISO 14001 certification.

Steam is the main ingredient used in the manufacture of Jablite insulation.  The water consumption is low because the water is clean and can be re-used many times in the process.

No solid waste is generated during the manufacturing; any broken or faulty parts that do not pass our stringent quality control standards can be broken up and re-introduced into the process.

Jablite insulation products do not contain and are not manufactured using any substances which are controlled under Montreal or Kyoto Protocols.

Efficient use of natural resources

Jablite insulation products are  98% air and therefore extremely resource efficient. The lightweight nature of Jablite insulation means that less fuel is used when transporting from factory to building site.

Jablite insulation products are made from expanded polystyrene (EPS), a plastic that is obtained from oil. In Europe, the percentage of oil used in manufacturing EPS is 0.1%. 


The monomer styrene has been manufactured for more than 70 years and is used in a wide range of products.

Styrene exists naturally and can be found in many foodstuffs including strawberries, beans, nuts, beer, wine, coffee beans and cinnamon.


Pentane, a non-CFC expansion agent is used to expand polystyrene granules into the cellular structure that makes the production of EPS possible.

Pentane is a slightly volatile liquid in the same chemical family as methane, ethane, propane and butane and is continually being formed in natural processes in the digestive systems of animals and the decomposition of vegetables. It is not considered a substance harmful to health by European health authorities.

Pentane does not contain chlorine and therefore does not harm the ozone layer.

No CFC’s (chloroflourocarbons) or HCFC’s (hydrochloro-fluorocarbons) are used in the manufacture of EPS.







Download a concise summary of  the performance of Jablite insulation products with regard to the Code for Sustainable Homes and BREEAM here.