Underfloor Insulation

Underfloor insulation is one of the most overlooked aspects of insulation.

Contact us to find out how we can help with your insulation needs


Google Reviews

  • Made contact with Green Horizon by phone, a verbal quotation was given & quickly followed up by a very professional quote by email. I placed the order the same day... read more

    Mike Moroney Avatar Mike Moroney
    November 7, 2023

    Great service, lots of detailed info provided about the service, the work was done quickly an efficiently, and a great price!

    Chloe Baker Avatar Chloe Baker
    October 31, 2023

    Excellent customer service throughout. Matthew was knowledgeable and was able to answer any questions prior to installation. The team arrived on time, they were polite, friendly and professional and completed... read more

    Phillip Kuhn Avatar Phillip Kuhn
    October 14, 2023
  • Did a great job in quick time minimum fuss at a reasonable price

    Ken Edwards Avatar Ken Edwards
    October 14, 2023

    Fantastic service. Great, honest communication. Prompt, clean, tidy. Delighted with the result & a toasty room! Thank you

    Louise Crawford Avatar Louise Crawford
    October 14, 2023

    Excellent and fair service.

    Sasa Green Avatar Sasa Green
    October 14, 2023
  • Fantastic and polite team! This is the second time I've had them out to do spray insulation. Had them spray underfloor insulation, was quick and way able to leave them... read more

    Colin Jones Avatar Colin Jones
    October 14, 2023

    Highly recommended- very good communication, team arrived on time and were very knowledgeable about what they were doing. They have finished as promised and have a very happy customer in... read more

    Marta K Avatar Marta K
    October 14, 2023

    Absolutely fantastic company and results of my underfloor insulation. The team were so professional, friendly and courteous and respectful of my home. I dealt with Matthew throughout who took the... read more

    Alex Tattersall Avatar Alex Tattersall
    October 14, 2023
  • I contacted Green Horizon Energy Solutions to see if they were able to apply foam to the underside of two roofs that were condensating and causing damage to the suspended... read more

    Arfon Morgan Avatar Arfon Morgan
    October 14, 2023

    I was very pleased with the underfloor insulation work. The team worked hard and completed the work promptly and very efficiently. I would'nt hesitate to recommend this company. They have... read more

    michael williams Avatar michael williams
    October 14, 2023

    Excellent job, friendly and efficient Highly recommend

    Simon Collinge Avatar Simon Collinge
    October 14, 2023
  • Great set of lad got the job done on time would definitely recommend them to insulate your roof space,

    Colin Bradbury Avatar Colin Bradbury
    June 14, 2023

    I had underfloor insulation installed by Matthew and his team. They were prompt, professional and tidy. I am now looking forward to my energy savings

    Kathy Boylan Avatar Kathy Boylan
    May 14, 2023

    I had underfloor insulation installed. The lads were friendly and quick and cleaned up properly afterwards. What a difference it made. On the first night I had to turn the... read more

    Andy Ford Avatar Andy Ford
    May 14, 2023

Why spray foam insulation?

Underfloor insulation is one of the most overlooked aspects of insulation in old buildings yet it can be one of the most cost-effective solutions to making a warm draught free home.

Energy savings from floor insulation not only apply to heat loss, but a major part is also stopping draughts that allow cold air to trickle into a property, expansion gaps under skirting boards on the building perimeter allow cold draughts to push into the building envelope which results in pushing warm air upwards making it cold and draughty at a low level.

Our spray foam solution eradicates these draughts and eliminates cold floors, open-cell spray foam stays soft and flexible and will fill expansion gaps and other voids left by pipes and cables, With its ability to flex it still allows the building to expand and contract with seasonal changes without losing its air seal.

  • High Energy Bills
  • Heat Loss
  • Mould or Damp
  • Noise Pollution
  • Condensation
  • Irregular Temperature

Underfloor insulation suspended floor

Using wool or fibre type materials can give some benefit but as these products are not classed as air barrier materials they still allow cold air to circulate through the material and allow draughts to penetrate the building envelope, Open-cell spray foam insulation gains air barrier status at 2” thick yet remains breathable allowing all materials to continue to breathe naturally without trapping moisture or causing sweating of timbers, people often ask how can it be airtight and breathable. Breathability is the measure of moisture movement via diffusion and not the ability to stop air movement.

A high percentage of houses in the UK have suspended timber flooring on the ground floor, and unless the void between the base of the property and the floor is properly insulated, draughts will circulate causing the floor to feel cold to touch and will also contribute to energy wastage.

If your property suffers from any of these issues you'll benefit from Underfloor insulation:

Spray Foam Insulation Videos

How does underfloor insulation work?

HBS Spray Foam is the superior underfloor insulation solution. When applied, the foam expands to 100 times its original size, completely covering the most complex of structures with ease, expanding into every gap or void that is present. As a result, when it solidifies it forms an airtight seal, preventing any draughts from penetrating the property, and has high thermal resistance; as heat rises, the main objective in underfloor insulation is to prevent cold air from rising up through the floor and pushing the warm air in the property into the loft.

It fully adheres to a surface when applied; no netting or other form of the fixing is needed to keep it in position, and it does not degrade or sag over time – making it ideal for use on the underside of a suspended floor.

HBS Spray Foam will work at its full potential for the life of the building, and all installs are automatically covered by a manufacturer’s 25-year warranty policy when installed by Green Horizon Energy Solutions. Icynene is also the only foam on the market to have achieved BBA, BDA, ETA and IAB certification, giving you total peace of mind with regards to the integrity of the product.

Access for underfloor insulation

Once we have a suitable access point we physically send a person underneath to apply the insulation directly to the underside of the boards, in some instances we can work with a gap of just 50cm so if you are in doubt to if we could fit underneath you would be surprised at some of the tight spaces we work in, we will always offer a free survey in order to assess the depth and ability to apply the foam because HBS LDC-50 Is an open-cell foam even when it sets (in a as little as 5 seconds) it remains soft and flexible with the consistency of a sponge.

The benefit to this is that the foam will move with seasonal changes to the buildings envelope so as expansion and contraction occur during winter and summer the foam will maintain a full air seal making sure no air leaks develop in and around the material, also as an open-cell product it will allow any bulk water to drain through without absorbing excessive amounts and will always dry out to its original state.

This is important when insulating the floor because if you had a spillage or leak above the floor you are safe in the knowledge it will not get soaked up by the insulation rather it will drain through and the small amount of moisture in the product can fully dry out through the open cells and return to its original condition without effecting thermal resistance or the air seal.

HBS open-cell acts like a windproof jacket allowing the body to breathe but stopping penetrating air infiltrating the rooms above.

What about other services under your floor?

Most floor joists are roughly 200mm deep and as we aim to apply the foam to 100mm deep. It does not interfere with electrics or plumbing pipes that are fastened to the bottom of the floor joists it will only interact with cables and pipes as they pass up to the room above.

However, there are no corrosive chemicals in the product so where it does interact it will not damage or corrode electric cables or plumbing pipes, Icynene also meets all required fire regulations as part of the BBA and BDA certificate and will not add any further fire risk, the product also requires 22% Oxygen to burn so will not sustain a fire on its own without a source burning it would self extinguish also with the end product made of 99% air there is in fact very little mass to burn.

Most underfloor insulation can be completed within a day and with minimal disruption. If you are unsure as to whether your property is suitable for underfloor insulation or if you would like further information we offer a free, no-obligation home survey service with a relaxed no pressure attitude, please feel free to call us to discuss your requirements and learn how installing Icynene open-cell insulation will help you not only save on heating cost but create a more comfortable environment.

Established in February 2016, Green Horizon Energy Solutions have gone from strength to strength with hundreds of underfloor insulation jobs completed with excellent results and amazing client feedback.

Why not give us a call?

We'll help and assist you to find the best solution helping to make savings of up to 40% on energy bills.

0161 427 0772


Spray Foam Insulation FAQ's

Due to the nature of HBS products, the foam, once applied, creates an air seal within a property, helping to prevent heat loss. This will reduce the amount of heat needed to fill the building, in turn saving money year after year.

As HBS helps to reduce heat loss from a property, much less energy is needed to help keep a comfortable temperature throughout, thereby reducing a property’s carbon footprint on the environment.

Air leakage can be responsible for up to half of a property’s energy loss. The air seal created by applying Icynene to the internal structure of a building means no gaps exist from which a draft can appear; this helps maintain a more consistent internal temperature, minimises heat loss and reduces waste, creating an efficient and comfortable living or working space.

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the benefits

Learn more about the wide range of benefits of our spray form insulation can have for your home or building efficiency, cost saving and improving your carbon footprint.

how it's done

HBS spray foam expands up to 100 times its original size after the initial spray, which then hardens to fill every corner.

our work

We have supplied spray form insulation to thousands of residential and commercial properties across the Northwest and beyond. We love showcasing our work and educating you on how we operate.