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Tradical® Hemcrete® is a carbon negative, bio-composite building material made of hemp and a lime based binder. Hemcrete® has excellent thermal properties and is ideal for creating comfortable buildings which meet the higher levels of the Code for Sustainable Homes and BREEAM standards.

Hemcrete® is a proven, robust, highly breathable and sustainable construction product, that can be cast or sprayed.

The hemp (Tradical® HF) and the lime binder (Tradical® HB) are mixed together to become Tradical® Hemcrete® which is used for the construction of walls but can also be used in roofs to create buildings with excellent thermal, breathable and acoustic properties, creating healthy living and working environments.

Hemcrete® is a lightweight material that achieves a negative carbon footprint as it locks up approximately 130kg of CO² per m³ of wall and when protected by Limetec lime renders and plasters, provides one of the best value walling systems for high thermal mass, well insulated, breathable, sustainable and commercially viable construction.

Hemcrete® is not a load bearing material. It is normally cast or sprayed around a timber or steel frame and relies on the frame to carry the vertical loads of the roof and upper floors down to the ground. The lightweight nature of Hemcrete® means that lightweight timber framing and foundation structures may be considered to reduce costs and construction time. Hemcrete® provides some racking strength for the frame and as a result the frame may not need additional bracing.

The high thermal performance and air-tightness of the Hemcrete® means that single skin structures are sufficient and do not require additional insulation layers, This avoids the need for cavity wall construction. The ability of the walls to breathe and to store heat allows for passive self regulation of the temperature and humidity within the building, often reducing the need for heating and air conditioning.

For more information please click here to download the information pack (zip file, 8.8mB)

Limetec Lime Mortars

During the last 25 years, Lime has enjoyed a steady revival for repairs to historic buildings. The soft, porous and flexible nature of lime mortars and plasters is now universally recognised as being vital to maintain the traditional breathing performance of old buildings. In addition, an increasing number of architects, engineers, surveyors and builders are now beginning to realise that lime has many benefits to offer in new construction. Lime Technology (working with CPI EuroMix) has developed a solution to this problem in the form of dry, pre-mixed hydraulic lime mortar, produced using factory precision batching techniques to tried and tested recipes gained through years of experience.

For large projects and building developments, where flexibility and vapour permeability are required, mortar can be supplied in silos which can hold up to 22 cubic metres or 30 tonnes of dry mix. The silo produces consistent, ready mixed and ready to use mortar at the touch of a button. For smaller projects, the mortar is available in 25kg bags and can be mixed in a conventional drum mixer.

There are two standard mortars which cover a range of likely applications both for conservation and new build:

Limetec eminently hydraulic mortar

For use where a higher level of durability is required i.e. masonry exposed to severe weather and underground work.

Limetec moderately hydraulic mortar

For most normal applications i.e. cavity brickwork, blockwork and stonework.

The use of dry mortar and silo technology now allows lime mortar to compete on an equal footing with cement mortars - the argument for using lime has never been so strong!

click here to download a fact sheet

Castle Natural Hydraulic Limes

Castle Natural Hydraulic Limes offer a range of hydraulic limes to meet the requirements of mortars, plasters and renders for conservation, restoration and newbuild. Castle Natural Hydraulic Limes can be used for the whole range of climatic conditions encountered in the UK and particularly useful in mortars and renders to compliment the strength of natural stone and soft brick.

Castle Natural Hydraulic Lime is produced from the natural argillaceous limestones in the quarries at Izaourt and Sauveterre in the South of France. The quality Control at the quarries is backed by extensive Research and Development facilities ensuring a high degree of consistency in both performance and colour.

Castle Natural Hydraulic Lime, when mixed with sand to form a mortar, can be used for a wide range of applications such as jointing/pointing, bedding tiles, rendering and plastering. Using a suitable sharp sand the mortar will have excellent workability and water retention when applied to most bricks, blocks and surfaces to be bedded, rendered or plastered. The mortars have high plasticity, a high level of cohesion, low shrinkage and excellent resistance to sulphates. They are also resistant to freezing and thawing actions.

Available per bag in 25kg bags or by the pallet (63 bags).

Earth Blocks

Clay Boards

The Eco Building Boards™ clay building boards are a sustainable alternative to gypsum plasterboards. They combine the advantages of drywall construction for internal walls and ceilings with the amazing properties of clay as a sustainable, healthy and versatile material. The Eco Building Boards™ add significantly to the thermal mass of a structure and passively optimize the relative humidity of the internal climate by acting as a moisture buffer.

The Eco Building Boards™ may be used for the cladding of interior walls, timber stud frameworks, batten- and dry wall constructions, facing formworks, suspended ceilings and loft extensions. The boards may be fixed to solid masonry substrates such as concrete or bricks, as well as timber-based/particle boards by means of staples or screws. The joints are reinforced with standard glass fibre mesh and then skimmed with a thin layer of clay or lime plaster.

Advantages:

• Buffers air humidity
• Effectively shields against high frequency electromagnetic radiation
• Good acoustic insulation characteristics
• Vapour permeable

• Good thermal storage capacity
• Completely and continuously recyclable
• Prevents mould growth
• Low embodied energy
• Absorbs odours

Also available:

Eco Building Boards™ CLAY BUILDING BOARD WITH LATENT HEAT STORAGE MATERIAL - Phase Change boards for cooling in the summer.

Eco Building Boards™ CLAY CLIMATE ELEMENT - For connection to domestic water-filled heating system.

Eco Building Boards™ LOW-VOLTAGE ELECTRIC HEATING ELEMENT - The ideal solution for 'passive houses' or as a supplementary heating source.

click here to download information.

Breathe Hemp Insulation

Breathe™ is a natural fibre, thermally efficient insulation that can be used in new and existing buildings. Suitable for loft, framed buildings and inter-floor applications, Breathe™ is made from sustainably UK grown hemp and flax fibres and has a low carbon footprint.

Produced in the UK, Breathe™ comprises hemp and flax fibres. The fibre is separated from the woody core of the plant in an entirely mechanical process without the use of chemicals and generates no waste. The woody core co-product from the plant is then utilised in a variety of other materials. This includes Tradical® Hemcrete®, an innovative material for carbon negative highly thermally efficient walls. The natural hemp and flax fibres are bound together with only 5% polyester binder to create a semi- rigid batt.

Breathe™ is an energy saving product that delivers a similar performance to more conventional materials, Breathe™ combines low thermal conductivity and thermal mass insulating against the cold, keeping your house warm in winter but cool in summer.

To meet UK fire performance standards, the fibres in Breathe™ are treated with a simple non-reacting compound to achieve Euroclass E fire performance rating. Breathe™ complies with the fire performance requirements of the Building Regulations.

click here for a factsheet on Breathe hemp insulation (pdf)

EdenBloc35 natural insulation

EdenBloc35 is Second Nature's latest innovation in natural insulation. EdenBloc35 is a natural, low density rigid insulation that can be used in many internal situations including wall lining, under rafters, between rafters and timber studs to provide first class thermal insulation. EdenBloc35 is manufactured in the UK, provides sizable energy efficiencies in service and locks up nearly twice its own weight in CO² which all contribute to its excellent carbon footprint.

Their unique patented technology combines excellent thermal performance with the breathability of natural fibres, bridging the gap between synthetic foams and other natural fibre insulation materials. EdenBloc35 has a thermal conductivity of 0.035 W/mK and the ability to eliminate thermal bridging factors which can improve insulation performance by as much as 30% compared to other natural insulation.

EdenBloc35 has 60% recycled content and contains no synthetic binders, substantially reducing environmental impact and the need to rely on fossil derived materials. EdenBloc35 insulation is safe to reuse and allows efficient end of life energy recovery or composting.

click here for a the Edenblock brochure (pdf)

Thermafleece

There now three types of Thermafleece available. The original Thermafleece, which utilises hollow wool fibres, blended to an optimum density producing first class thermal and acoustic performance whilst minimising impact on the environment.

Thermafleece is manufactured to meet the highest quality and performance standards and using British sheep's wool, Thermafleece is the only wool based insulation to hold BBA certification ensuring full compliance with current UK Building Regulations.

Like Thermafleece the new Thermafleece PB20 product harnesses the excellent insulating qualities of British sheep's wool. This is then blended with a mix of recycled polyester to create a sustainable insulating product that can be easily compressed and packaged into a tight roll without losing any thickness once unrolled.

For contractors working on busy build and renovation sites, this has several distinct advantages. The compact nature of the product means it requires less storage space on site and also makes working in cramped installation areas a great deal easier.

Download the Thermafleece brochure and the PB20 Brochure

Baumit lime-based plasters and renders

Baumit, established in 1988, has become one of the leading brands in Europe manufacturing lime based plasters and renders. Baumit offer a very extensive and innovative product range, tried and tested for every situation. Baumit's focus on research and product development brings high quality and confidence to their continually advancing systems. The Baumit range is very practical and simple, meaning those new to the products can use them successfully with minimal guidance.

Their high quality and high performance bring many benefits.

• Simple and economical to use.
• Vapour permeability keeps the building dry, preventing mould growth and decay.
• Robust, flexible basecoat plasters/renders prevent spoiling from cracks.
• Decorative finish renders give strong, uniform, durable colours without the need for decoration for many years.
• All of Baumit's products meet the rigorous EN ISO 9001 standard and are independently tested and certified.

click here to download further information (zip file, 0.5mB).

Lithotherm UFH

Lithotherm tiles are a very quick, simple and cost effective way to install underfloor heating. The tiles replace a screed that is normally used in solid floor construction and uniquely provides a system combining high thermal mass with very fast surface heating times.

Lithotherm tiles are made from waste brick, which is crushed into aggregate to produce these tiles. The system can be covered with either tiles or floorboards and because it goes down as a dry system there is no waiting period before the finish can be applied.

The system uses a high quality, swiss made, aluminium cored pipe, which connects into a standard manifold and can therefore be combined with any heat source. The system works especially well with ground source or solar sources as it is designed to run at temperatures as low as 30C rather than the higher temperatures more commonly found in underfloor systems.

click here to download information.

Click to download information on each system -

• UdiTop
• UdiIn
• UdiFront
• UdiSpeed
• UdiReco
• UdiClimate
• 

The Unger-Diffutherm range of wood fibre insulation products are the perfect insulation solutions for façades, interior walls, dry-wall constructions and roofs using high-performance wood-fibre materials in a wide range of combinations. Their innovative solutions help to provide a comfortable environment for you to live and work. Unger-Diffutherm stands for increased living quality within your own four walls and climate protection for the environment.

Unger-Diffutherm building products and system solutions are tested for their durability and quality and are subject to independent third-party controls. The current test certifications and technical approvals combined with many years of experience ensure reliability and peace of mind.

For an overview, get the UdiProducts brochure -