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Insulated Concrete Formwork

PolyBloks by PolySteel.

We are a UK based manufacturer supplying precision made, high strength ICF forms with metric dimensions that are suitable for all types of building project.

Our ICF Blocks
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ICF Made Simple

Our ICF PolyBloks fit together easily onsite and can be installed by your local builder.

Rigid Forms

Steel ties and tongue & groove joints provide very rigid ICF forms that are easy to concrete.

Build it Fast

Do not wait 3 to 4 months for timber frame or bricklayers – the roof is on in weeks with ICF.

Made in UK

Large stocks & UK manufacture ensures reliable delivery across the UK & for export.

Why ICF.

What makes ICF Insulated Concrete Formwork better than traditional construction methods?

Airtightness.

The solid concrete core within ICF walls provides the primary barrier to airflow. The concrete provides an impermeable core that can only leak if the doors and windows are not properly sealed to it. Furthermore, the closed-cell EPS insulation is impermeable and significantly increases the airtightness of the structure.

Thermal Mass.

Insulated cement forms provide the Thermal Mass that regulates indoor temperatures by absorbing excess heat during the day and releasing stored heat at night. This moderates temperature fluctuations, maintains a more stable and comfortable indoor environment and reduces energy costs.

Fire resistance.

The solid concrete core in an ICF house creates an impenetrable shell. The EPS in the ICF forms will soften when exposed to high temperatures but does not burn and incorporates fire retardant additives. This is recognised by the high fire resistance ratings of Insulated Concrete Formwork walls.

Flood resilience.

ICF walls do not deteriorate when submerged in water. The EPS foam used in ICF forms is resistant to water absorption and does not degrade or lose its insulating properties when dried out. After a flood event, ICF walls dry quickly compared with timber that absorbs and retains moisture and is prone to mold and mildew.

Sound Insulation.

The solid concrete core of an ICF wall is a very dense material that blocks and absorbs sound waves. This reduces the transmission of noise between the indoor and outdoor environments.
The closed-cell structure of EPS helps to dampen and absorb sound vibrations, further enhancing the wall’s ability to reduce noise penetration.

Build Quality.

Attention to detail during the construction process (including sealing joints properly and correctly placing and bracing forms) will guarantee the quality and strength of walls made with insulated cement forms.
The use of ICF forms was approved in 2010 by the Council of Mortgage Lenders for mortgage purposes. ICF is approved by the NHBC for Insurance.

Longevity.

ICF buildings are resilient to moisture, insects, rot, mold, and fire. These factors all contribute to their longevity and so require less maintenance than traditional structures.
Insulated Concrete Formwork provides strong structural walls that can withstand extreme weather conditions, flooding and even earthquakes.

Cost.

Specialist installers are not required for Polybloks and this reduces the cost by a substantial margin. Costs are also reduced because of PolyBlok’s simplicity compared with all the other forms that need full reinforcement to be provided on residental buildings. And PolyBloks can be delivered from stock within 48 hours so that site time is wasted waiting for supplies that come from abroad!

The solid concrete core within ICF walls provides the primary barrier to airflow. As the concrete core is impermeable it will only leak if the doors and windows are not properly sealed to it. Furthermore, the closed-cell EPS insulation is impermeable and significantly increases the airtightness of the structure.

Insulated cement forms provide the Thermal Mass that regulates indoor temperatures by absorbing excess heat during the day and releasing stored heat at night. This moderates temperature fluctuations, maintains a more stable and comfortable indoor environment and reduces energy costs.

The solid concrete core in an ICF house creates an impenetrable shell. The EPS in the ICF forms will soften when exposed to high temperatures but does not burn and incorporates fire retardant additives. This is recognised by the high fire resistance ratings of Insulated Concrete Formwork walls.

ICF walls do not deteriorate when submerged in water. Moreover, the EPS foam used in ICF forms is resistant to water absorption and does not degrade or lose its insulating properties when dried out. After a flood event, ICF walls dry quickly compared with timber that absorbs and retains moisture and is prone to mold and mildew.

The solid concrete core of an ICF wall is a very dense material that blocks and absorbs sound waves. This reduces the transmission of noise between the indoor and outdoor environments. The closed-cell structure of EPS also helps to dampen and absorb sound vibrations, further enhancing the wall’s ability to reduce noise penetration.

Attention to detail during the construction process (including sealing joints properly and correctly placing and bracing forms) guarantees the quality and strength of walls made with insulated cement forms. The Council of Mortgage Lenders approved the use of ICF Forms in 2010 for mortgage purposes. Furthermore, ICF is approved by the NHBC for Insurance.

ICF buildings are resilient to moisture, insects, rot, mold, and fire. These factors all contribute to their longevity and so require less maintenance than traditional structures. Indeed, Insulated Concrete Formwork provides strong structural walls that can withstand extreme weather conditions, flooding and even earthquakes.

ICF PolyBloks will usually be delivered from stock within 48 hours. Labour costs are reduced thanks to PolyBlok’s simplicity which speeds up the build programme and can continue throughout winter. Also, no specialist installers are required to use PolySteel ICF forms and so you can use your local tradesmen.

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PolyBlok ICF is designed to form insulated, fireproof, sound resistant, draughtproof, indestructible walls that are very fast and easy to build and last a lifetime.

Understanding ICF.

large custom insulated foam house built with icf

ICF Construction

Why build with ICF
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ICF Design & Installation

Learn to build with ICF

Why PolySteel.

ICF Made Simple.

PolyBloks are delivered ready made and don’t require assembly unlike some other ICF forms which require complex kits and spare parts. The steel ties, precision tongue & groove jointing system and high tensile wire clips ensure simple and trouble free installation and concreting.

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ICF Structures.

Our insulated cement forms can be used for almost any type of structure because they are so suitable for reinforcement. They can form curved walls or provide spectacular cantilevers that Architects love to provide in modern eye-catching residences.

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Reinforcement.

Polysteel Forms are certified for the use of plain concrete, therefore reinforcement is not required to build a normal house. When reinforcement is necessary, the rigidity of these insulated concrete forms makes them uniquely suitable for concrete compaction using a vibratory poker to remove any risk of voids being left that will allow corrosion of the steel bars.

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Better than traditional methods.

Traditional construction such as timber frame and cavity walls have significant disadvantages. These are easily overcome or completely avoidable when insulated cement forms are used.

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ICF Design.

Most architects and engineers are still unfamiliar on how to fully utilise the benefits of Insulated Concrete Formwork in project planning. The complexity of some ICF systems only makes this more difficult. Our ICF design services make full use of the advantages and ensure builders have all necessary information to quickly build and finish their projects.

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Certified UK Manufacture.

PolySteel ICF Insulated Concrete Formwork is provided with a BBA (British Board of Agrément) certificate. This ensures all buildings incorporating PolyBloks will be accepted by the NHBC and similar building insurance schemes.

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ICF Projects.

RESIDENTIAL

large custom house built with insulated concrete formwork

Residential Buildings

ICF Insulated Concrete Formwork is ideal for novice & experienced builders. Buildings can be waterproofed within weeks, entire streets can be erected quickly and all ensuing trade visits completed sometimes in a single visit.

Residential

COMMERCIAL & AGRICULTURAL

Commercial, Industrial & Agricultural

ICF is ideal for the rapid construction of very economic buildings. In many instances the steel columns and their expensive foundations can be omitted and replaced with a few reinforcing bars in the insulated concrete form walls.

Agricultural & Commercial

BASEMENTS & POOLS

Basements & Pools

Insulated cement forms are ideal for the design and construction of basements and basement swimming pools. The walls are easy to waterproof, quick to construct and do not need a team of highly skilled/costly tradesmen.

Basements
Pools

RETAINING WALLS & SMALL STRUCTURES

Retaining Walls & Garden Buildings

Insulated concrete form walls are ideal for the self-builder to construct garden offices, sound studios, garages, indoor swimming pools and retaining walls without the need for expensive bricklayers and carpenters

Retaining Walls
Small Projects

Why choose ICF?

Polysteel’s unique ICF system is simple and easy to use for any building project.

Learn to build with ICF

ICF Construction

Call us if you need more detailed information for your ICF project, browse our technical library and FAQs for construction details using Polybloks.

Technical Library FAQs CONTACT