The most commonly used underfloor heating pipes

What Are Underfloor Heating Systems and Why Are They Important?

What Are Underfloor Heating Systems?

Underfloor heating systems are modern heating solutions that provide warmth to a space through heating pipes or electric cables placed beneath the floor. These systems are used as an alternative to traditional radiators and are distinguished by their more even heat distribution.

Why Are Underfloor Heating Systems Important?

• Even Heat Distribution: Unlike radiators, underfloor systems ensure the same temperature throughout the room.

• Energy Efficiency: They provide high comfort while consuming less energy, which is both eco-friendly and cost-saving.

• Aesthetic Appearance: Since they don't occupy wall space like radiators, they allow more flexibility in interior design.

• Comfort: The warm floor under your feet creates extra comfort, especially in cold seasons.

• Reduced Dust Circulation: Radiators circulate air, which spreads dust. Underfloor heating reduces this significantly.

What Should You Consider When Choosing Underfloor Heating Pipes?

For a long-lasting, efficient, and safe underfloor heating system, the quality and compatibility of the pipes used are crucial. The right pipe selection directly affects system performance and your comfort.

1. Material Quality

   • Most commonly used materials:

     • PE-RT (Polyethylene of Raised Temperature Resistance)

     • PEX (Cross-linked Polyethylene)

     • PB (Polybutylene)

     • Metal-polymer composites (PEX-AL-PEX)

   • These materials must withstand high temperatures and pressure for long-term use.

2. Oxygen Barrier

   • Pipes should include an anti-diffusion layer that prevents oxygen ingress. This protects the system from corrosion and damage to components like pumps.

3. Temperature and Pressure Resistance

   • Pipes should resist at least 6 bar pressure and up to 90–95°C temperature.

   • Although underfloor systems typically operate at 30–50°C, durability is important for safety.

4. Flexibility and Ease of Installation

   • Flexible pipes make installation easier. Rigid or brittle pipes may crack during placement under the floor.

5. Certificates and Standards

   • Pipes must meet international or local standards such as ISO, DIN, and CE.

6. Durability and Warranty

   • Reputable brands offer warranties ranging from 10 to 50 years, reflecting confidence in their products.

Most Commonly Used Underfloor Heating Pipes

Pipes used in underfloor heating systems play a vital role in system quality, lifespan, and energy efficiency. Below are the most common types and their benefits:

Tiemme Brand Underfloor Heating Pipes

Tiemme is a well-known Italian brand offering high-quality products in heating and plumbing systems. Their underfloor heating pipes are widely used due to technical advantages and long-lasting performance.

• Certificates and Quality Standards

  • DIN, ISO, and CE certified

  • Fully compliant with European standards

  • Warranty: Typically 10–25 years

• Advantages of Tiemme Pipes

  • Italian-made quality

  • High energy efficiency

  • Easy and quick installation

  • Oxygen barrier protects against corrosion

  • Reliable warranty and technical support

Fırat Brand Underfloor Heating Pipes

Fırat is one of the largest plastic manufacturing companies in Turkey and is well-known in international markets. Their pipes are appreciated for quality, reliability, and affordability, making them ideal for both individual and industrial projects.

• Additional Advantages of Fırat Pipes

  • Available in various sizes (e.g., 16 mm, 20 mm)

  • Certified: ISO, TSE, and other international standards

  • Made from environmentally safe materials

  • Warranty: 10–25 years, depending on usage

• Why Choose Fırat?

  • Balanced price and quality

  • Technically suited for regional needs

  • Extensive distribution and support network

  • Energy efficiency and long lifespan

Unidelta Brand Underfloor Heating Pipes

Unidelta is a leading Italian manufacturer of plastic pipes and fittings. Their products are widely used across Europe and the world due to their durability and technical superiority.

• Additional Advantages of Unidelta Pipes

  • Italian-made – meets high European standards

  • ISO, CE, DIN, and other certifications

  • Low thermal expansion helps pipes maintain shape

  • Lightweight and flexible – easy to install

  • Warranty: Up to 25 years

• Why Choose Unidelta?

  • Reliability and compliance with European standards

  • Long service life – up to 50 years with proper installation

  • Full documentation and technical support

  • Ideal for residential, commercial, and industrial projects

Frequently Asked Questions About Underfloor Heating Pipes

Which pipe types are most commonly used?

• PEX-A (very flexible and high-quality)

• PEX-B (more affordable and durable)

• PEX-AL-PEX (aluminum layer, high shape stability)

• PE-RT (flexible and environmentally safe)

• PB (less common, but very flexible)

Which pipe type lasts the longest?

• PEX-AL-PEX and PEX-A pipes are highly durable. When properly installed, they can last 30–50 years.

What is an oxygen barrier and why is it important?

• An EVOH oxygen barrier prevents oxygen from entering the pipe, reducing corrosion and prolonging the life of pumps and metal components.

What is the ideal pipe diameter for underfloor heating?

• Common sizes: 16x2 mm and 20x2 mm – optimal for heat transfer and installation.

Which brands are the most preferred?

Popular brands on the market:

• Tiemme (Italy)

• Unidelta (Italy)

• Fırat (Turkey)