We stock a large and complete range of natural insulation products for almost every conceivable application, in ground, walls, floors, ceilings, roofs, external and internal systems plus a wide range of acosutic products. Browse the categories below to see the products where you will find plenty of information on pricing, delivery, application and use, technical data sheets, installation guidance and more. To view the downloads click on the "Technical Info" tab in the product page;  any questions please call.

Natural - healthy - ethical.  The case for Natural insulation

The Ecomerchant vision is to lead the move to low carbon living through sustainable construction, energy efficiency, and the elimination of waste and pollution to reduce our environmental impact. We will deliver change in a straightforward understandable way, to sponsor a permanent long term behavioural shift in our attitude to how we live.

What kind of Insulation you use contributes to meeting this vision in two broad ways, first what it is made of – does it impact on the environment or your health in a negative way and second does it reduce or eliminate the need for fossil based fuels to heat.

The UK home insulation market alone is huge worth over  £800 million of this a staggeringly small amount is made up of natural insulation products– probably less than 1%.

Figures are hard to come by but there is one common factor across the market, natural insulation products are growing their market share. For a while the manufacturers of synthetic insulation focused on embodied energy as their meter for comparison but the overall benefits of natural insulation products cannot be ignored. Most of the market growth is driven by customers wanting healthier products that function on a number of levels and compliment the higher performance levels that are being designed into modern buildings and into refurbishing existing properties. Terms such as breathable and airtight have created awareness that natural products have multiple and consequential benefits plus they do not degrade or pollute the environment.

Our commitment to you is to only sell natural insulation products.

How we can save you money We are the only supplier of Steico insulation products to sell by the individual board or pack meaning we can keep unnecessary waste to a minimum. All our Steico products are priced individually by the board or pack (for Flex), buying online couldnt be easier, just one click and the goods are on thier way, just when you need them and no need to waste or store any surplus.

 Why choose natural insulation below some of the main benefits which go far beyond just keeping the heat in.

  • When used appropriately, natural fibre insulation materials can deliver thermal and acoustic insulation comparable to other insulation materials
  • They have a lower or potentially negative carbon footprint
  • Fewer health issues during installation they do not present a problem for eyes skin or respiratory system.
  • Low to zero toxins, easy to reuse and give  significant health benefits throughout life cycle
  • Offers some thermal mass
  • They can also assist in regulating relative humidity, and can provide a vapour permeable system when used as part of a vapour permeable system they can reduce the risk of moisture build-up and consequent moulds and bacterial activity which can be injurious to health
  • Natural fibre insulation materials are also comparatively more robust in handling than synthetic products.
  • Natural fibre insulation off-cuts do not require specialist waste streams and typically can be composted so avoid unnecessary landfill.
  • Natural fibre insulation tends to have very good hygroscopic qualities but variable capillary qualities, and are all vapour-open. Vapour permeable systems are particularly useful where the building is vulnerable to moisture decay this would be the case for timber frame, timber roofs, lightweight steel construction and older buildings often made from traditional materials.

How we help you

Every home and every installation will be different but the methodology for calculating how much insulation how it will perform and what type you need is a well-trodden path for our experts. If you are unsure or need a hand figuring out what you want, just call us and ask for help. This is what we do day in day out. Our manufacturer partners and our team will always be able to help you to work out what is the best available option for your particular job.

If you know what you need then why not buy online you can shop when you want, all our products are delivered direct to you  from stock.

If you need help please call and ask, we are here to help just call 01793 847 444 or email  and we will do the work for you.

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  1. Intumescent Mastic 310ml Cartridge (White)

    Intumescent Mastic 310ml Cartridge (White)


    A one part intumescent acrylic mastic for sealing gaps around fire doors, window frames and for sealing joints, voids and irregular holes in fire rated structures. The sealant forms a char, preventing the passage of fire and smoke, when exposed to the heat of a fire.

    • Maintains fire integrity when sealing around pipes and cables that penetrate walls.
    • Tested in Block Wall, Concrete, Masonry and Plasterboard Partition.
    • Tested in Concrete Floors.
    • Tested in Linear Joints up to 50mm wide.
    • Tested in large service openings up to 490 x 150mm.
    • Tested for sealing of linear joints in concrete floors, masonry walls and plasterboard including head of wall details.
    • Tested around metallic pipes, cable trays, cable bunches, small, medium and large cables.
    • Sealant remains highly flexible after installation
    • In normal use the mastic will maintain the sound reduction index of a structure.

    The mastic has been independently tested in accordance with BS476 and EN requirements. It can provide up to 300 mins of fire resistance depending on depth/width and volumetric area 

    It has good unprimed adhesion to a wide variety of common building substrates.

    Available in White, Brown or grey

    Price is per 310ml cartridge

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  2. 60 Minute Fire Rated Downlight  Cone

    60 Minute Fire Rated Downlight Cone


    A certified 60 minute fire rated cone to enclose down lighters allowing full coverage with insulation.

    • Flanged fire hood 60 minute rated
    • Easily fitted, simply drop over light fitting and seal with mastic to form vapour seal
    • Rigid keeps insulation away from light
    • Allows continuous insulation over lights
    • Fully tested to prevent overheating
    • Reduces fire risk by keeping combustible away from hot downlights
    • suitable for use on aluminium and dichroic reflector lights up to 50W
    • Tested to BS EN 60598 Section 12.4 and BS 476 part 20

    Designed to meet both the new NHBC requirement for a vapour seal and the requirement for continuous loft insulation documented in Approved Document L, whilst still maintaining an air space between the light fitting and the insulation - as stipulated by many light fitting manufacturers.

    Using an Astro Loft Cone restores the air tightness of the ceiling and ensures continuity of insulation so that the overall performance is similar to that of a ceiling without downlights. 


    External 240mm x 160mm high.

    Internal 200mm x 150mm high


    Individually or in boxes of 12. Available to order in any quantity.

    Price is per Cone

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