Our products

Rhinotrusion Windows and Doors for your home

Want to transform your home with the latest energy efficient windows and doors? Our sister brand RHINO WINDOWS can help you choose the right products for your home or property.

Rhinotrusion produce systems for; Bifold Doors, Sliding Doors, Flush Casement Windows and Vertical Sliding Windows

Features at a glance

There are many features that make Rhinotrusion the prefect choice for your next windows and doors. From material choice, product options, sustainability to environmental factors, we have listed a few below …

Product Features – GFRC profiles
  • Energy saving material, lowers energy use within homes
  • GFRC profiles act as a fully thermally broken system
  • Air tightness, water tightness & wind load resistance exceed traditional materials
  • Can withstand extreme temperature changes
  • Does not expand or contract like other materials
  • Corrosion resistant / Salt resistant
  • Excellent sound insulating properties
  • Excellent weather resistance
  • Flush (external) face
  • Foam filled cavities for extra insulation properties
  • GFRC composites are thermally efficient, helping to conserve energy
  • GFRC has excellent thermal insulation energy saving properties
  • GFRC is typically used in marine, aerospace & wind engineering environments
  • High flame retardancy (1 hour)
  • High tensile strength test – retains original shape
  • Low thermal co-efficiency – does not expand with heat
  • Safe and harmless material
Product Features – Aluminium (Classic) profiles
  • Thermally efficient door & window system
  • New GFRC Insulated Core System – Glass Fibre Reinforced Composite Thermal Breaks
  • Foam filled frame cavities + track cavities
  • Lift on security hinges
  • Fast fit, screw locked glazing beads (inc. thermal break)
  • Flush (external) face
  • Stronger construction – Corner cleat + wedge pins
  • Slimmer stronger aluminium profile – only 50mm
  • Slimmer sight line – 110mm
  • 5mm gasket line
  • Surround trim (inside / outside), built in fitting tolerance / gasket housing, custom accent colour available
  • One continuous piece compression gaskets
  • Pivotable rollers

Rhinotrusion smashes 2022 UK Building regulation U-value requirements for replacement windows & doors … and actually hits the expected 2025 standards with the GFRC range!

Rhinotrusion manufacture profiles for the Classic aluminium range, which includes Winsul8 Technology, an Insulated Core System.

Energy Efficiency

Rhinotrusion energy efficient products

Energy Efficiency is the process of reducing the amount of energy required to 1. produce a product and 2. the amount of energy saved by installing our products (less heating and cooling within our homes).

Rhinotrusion balance both the energy efficiency of our systems we produce and the energy efficiency of our manufacturing processes.

Through continual Research & Development, we keep energy efficient products commercially viable to meet the ever changing global requirements.

For example, Building Regulations Part L covers the conservation of fuel and power in the building of new homes in England, and establishes how energy-efficient new and existing homes should be. As of 15th June 2022, the minimum U-values for windows and doors for existing dwellings has improved from 1.6 to 1.4 W/m²K and doors from 1.8 to 1.4 W/m²K. Additional to this, the notional standard (SAP10 Standard Assessment Procedure) suggests a lower U-value of 1.2 W/m²K, which may be an indication of standards to come.

Thermal transmittance, also known as U-value (U-factor in the US), is the rate of transfer of heat through a structure (which can be a single material or a composite), divided by the difference in temperature across that structure. The units of measurement are W/m²K (or Btu/h·ft²·°F in the US). The lower this value, the better a product is at insulating a building.

For specific energy ratings please refer to our material page.


With worldwide focus quite rightly on climate change, it has never been so relevant to reduce our energy consumption and have energy efficient products. Add to this the UK’s commitment to ‘net zero’ emissions by 2050, along with ever stringent building codes, the industry is finding traditional materials do not meet these guidelines readily or are not commercially viable.

Rhinotrusion are committed to helping the environment where we can through continuous improvements.

Rhinotrusion’s sustainability strategy focuses on the four areas where we can make a real difference – in the buildings our products are used in, the products we develop, in our own company and through our staff.

GFRC Explained

‘GFRC is predicted to be the main material in the future for door and windows construction’

GFRC material Characteristics


  • Contributes to sustainable building practices and green building certifications
  • Design flexibility – can be moulded to meet specific design requirements
  • Dielectric (non metallic) material
  • Durable / long-lasting, GFRC does not rot, decay or warp
  • Energy efficient – results in lower heating / cooling costs
  • Environmentally friendly – production / recyclability
  • Great insulator against heat & cold (low thermal conductivity)
  • Low maintenance – does not need regular painting or sealing
  • Lower energy consumption – during manufacture
  • Moisture & salt resistance – ideal for humid or coastal environments
  • Refractory (fire resistant) Window
  • Resistant to environmental factors – Corrosion, Cold, Heat
  • Results in doors & windows much lower U-values
  • Strong (Bending strength: 1442Mpa
  • Zero VOC (volatile organic compounds) emissions


What is GFRC? GFRC is a Glass Fibre Reinforced Polyurethane, which is a composite material used (in Rhinotrusion’s case) in the manufacturing of high-performance window and door profiles. It is a relatively new material in the construction industry that combines the strength and rigidity of fibreglass with the versatility and durability of polyurethane. GFRC is typically used within the marine, aerospace & wind engineering environments.

The manufacturing process of GFRC involves impregnating glass fibres with polyurethane resin and then using a moulding process to shape the material into profiles that can be used for window and door profile. The profile is then cured or hardened using heat and pressure, resulting in a rigid and durable product. The glass fibres provide reinforcement to the polyurethane, increasing its strength, stiffness, and resistance to environmental factors such as moisture, UV radiation, and corrosion.

Environmentally GFRC also has a much smaller carbon footprint during manufacture, emitting only 17% carbon emission compared to aluminium.

GFRC has several advantages over other materials commonly used in windows and doors. It has a high strength-to-weight ratio, making it a lightweight yet strong material that is easy to handle and install. It is also resistant to corrosion, weathering, and UV radiation, which ensures durability and longevity. GFRC is also a fantastic thermal insulator, providing vastly improved energy efficiency in buildings.

Overall, GFRC is a versatile and innovative building material that offers a range of benefits for the construction industry. Its unique properties make it an excellent choice for windows and doors, providing strength, durability, thermal insulation, moisture resistance, low maintenance and energy efficiency while maintaining a sleek and modern aesthetic.

GFRC is one of the most thermally efficient materials on the market – offering ULTRA LOW U-VALUE PROFILES.

Why choose Rhinotrusion

  • A highly specialist UK manufacturer with a a strong reputation for quality, reliability and customer service
  • Rhinotrusion remain very competitive on price, whilst offering innovative solutions for various industries & applications
  • Quality manufacturer of sustainable and building regulation compliant products
  • Trusted customer partnership; with a client-centric approach to energy efficiency and product development
  • Sustainable manufacturer using material choices(s) that include; recycled materials, 100% reusable & recyclable at end of life and zero land fill
  • Responsible manufacturer using material choice(s) to reduce building/construction projects overall carbon footprint

Rhinotrusion is a company that specialises in the design, development, and manufacture of high-performance composite materials for various applications, including window and door frames, structural components, and more. The company is based in the United Kingdom and has a global presence, with customers in various industries and sectors.

Rhinotrusion is known for its patented RhinoTrusion Technology, which combines fibreglass and thermoplastic resins to create a composite material that is strong, durable, and environmentally friendly. The company’s products are designed to meet the needs of customers who require high-performance materials that can withstand the toughest conditions and environments.

In addition to its innovative technology and products, Rhinotrusion is also committed to sustainability and reducing its environmental impact. The company uses recycled materials in its manufacturing processes, and its products are fully recyclable at the end of their useful life.

Overall, Rhinotrusion is a leading company in the field of composite materials, offering innovative solutions for various industries and applications. Its commitment to sustainability and reducing its environmental impact makes it a great choice for customers who are looking for high-performance materials that are also environmentally friendly.

Find a supplier

Trusted Rhinotrusion Fabricator

We only sell our windows and doors through a network of trusted Independent fabricators, all of which are regularly audited to make sure that they stay up to scratch.

All our Rhino partners have been given full training in installation, product knowledge and customer service to ensure you’re in safe hands, but please bear in mind they do remain an independent company. Contact them today to help you take the next step in your journey.

They can arrange, carry out and guarantee the installation of your dream doors and windows, and this will be supported by our manufactured product warranty.