In-Screed Underfloor Heating Kits | 150mm Pipe Spacing

In-Screed Underfloor Heating Kits – 150mm Pipe Spacing

Shop complete in-screed water underfloor heating kits for screeded floor installations at ThermRite Shop. These high-output wet underfloor heating packs are designed for pipework installed into a screed floor build-up, making them ideal for new builds, extensions, renovation projects and rooms where closer pipe spacing is required.

This collection includes in-screed UFH kits from 20m² to 180m², with pipe designed to be laid at 150mm centres. A 150mm pipe spacing is commonly used for higher heat output, improved heat distribution and projects where lower flow temperatures may be required, such as heat pump systems when correctly designed.

Each pack brings together the key components needed for a practical water underfloor heating installation, including UFH pipe, pipe clips, edge insulation, connector cores, manifold components and pump pack options, depending on the kit size.

Key Benefits of 150mm In-Screed Underfloor Heating Kits

High Output Wet UFH Pack

Each kit is designed to include the main components required for a typical high-output in-screed water underfloor heating installation.

Designed for Screeded Floors

Ideal for new floor constructions where UFH pipe is fixed in place before the screed is laid.

150mm Pipe Spacing

Closer 150mm pipe centres help increase heat output compared with wider pipe spacings, making these kits suitable for rooms requiring stronger total room heating.

Suitable for Heat Pump System Designs

150mm pipe spacing can help support lower flow temperature heating designs, making these kits a practical option for heat pump projects when the system is correctly designed around room heat loss, insulation levels and floor build-up.

Even Room-Wide Warmth

Water underfloor heating helps spread heat across the floor area, reducing cold spots and improving comfort throughout the room.

Suitable for New Builds & Extensions

In-screed UFH is a popular choice for new builds, home extensions, renovations and open-plan living spaces where a screeded floor build-up is being installed.

Convenient Kit Selection

Choose the pack size that matches your heated floor area, from 15m² up to 180m².

What’s Included in a 150mm In-Screed Heating Pack?

A complete 150mm in-screed underfloor heating kit normally includes pipework, pipe fixings, edge insulation, manifold components and a pump or pump and mixing unit. The exact components can vary depending on the kit size and project requirements.

Component What It Does Typical Use
UFH Pipe Carries warm water through the floor heating circuits. Laid across the floor area at 150mm centres before screeding.
Pipe Clips Secure the pipe to insulation or the floor build-up. Help maintain the pipe layout and closer 150mm spacing during installation.
Edge Insulation Allows for screed expansion and helps reduce heat loss at perimeter edges. Installed around room edges before screeding.
Connector Cores Used as part of the pipe connection setup. Helps connect UFH pipework to the system components.
Manifold Components Distribute water through each pipe circuit. Used to control and balance water flow through the UFH loops.
Pump Pack / Temperature Control Unit Helps circulate and regulate water temperature through the UFH system. Commonly fitted with manifold-based wet underfloor heating systems.

150mm Pipe Spacing: When Is It Suitable?

These kits are designed around 150mm pipe centres, making them suitable for projects where a higher heat output is required from the underfloor heating system. This closer pipe layout is often used in rooms with higher heat demand, modern low-temperature heating designs and heat pump installations where lower water flow temperatures may be needed.

Pipe Spacing Typical Use Heating Application
150mm Higher heat output layouts. Heat pump systems, lower flow temperature designs and rooms needing closer pipe spacing for higher heat output.
200mm Standard total room heating in well-insulated areas. New builds, extensions and modern screeded floors.
300mm Lower output or background heating. Areas where UFH may be used alongside another heat source.

Best Uses for 150mm In-Screed UFH Kits

Heat Pump Projects

150mm pipe spacing can help underfloor heating systems work effectively with lower flow temperatures, making these kits a strong option for heat pump installations when the full heating design is correctly specified.

New Build Homes

A strong choice for new floor constructions where pipework can be installed before the screed is poured and the system can be designed around room heat loss from the start.

Extensions

Ideal for kitchen extensions, living areas, garden rooms and open-plan spaces with new screeded floors where higher heat output may be required.

Renovation Projects

Suitable where the floor build-up is being replaced or upgraded as part of a refurbishment and closer pipe centres are preferred.

Open-Plan Living Areas

Helps deliver comfortable, even heat across larger floor areas without relying on radiators, especially where the UFH system is designed as the main heat source.

Higher Heat Loss Rooms

Useful for rooms where closer pipe spacing is needed to help increase heat output, subject to insulation levels, floor construction and heat loss calculations.

Trade Installations

A convenient kit format for installers, plumbers and heating engineers working on high-output screeded UFH projects.

Frequently Asked Questions

What is a 150mm in-screed underfloor heating kit?

A 150mm in-screed underfloor heating kit is a wet UFH system designed for pipework to be installed within a screeded floor build-up, with the pipe laid at approximately 150mm centres. Warm water flows through the pipework beneath the floor to heat the room evenly.

What does 150mm pipe spacing mean?

150mm pipe spacing means the UFH pipe is laid with approximately 150mm between each pipe run. This closer spacing is commonly used where higher heat output or lower flow temperature operation is required.

Are 150mm pipe spacing kits suitable for heat pumps?

Yes, 150mm pipe spacing can be suitable for heat pump systems because closer pipe centres can help support lower flow temperature heating designs. Final suitability depends on heat loss calculations, insulation levels, floor build-up and the required room temperatures.

Are these kits suitable for new builds?

Yes, 150mm in-screed UFH kits are well suited to new builds, extensions and new floor constructions where pipework can be installed before screeding.

Can I use a 150mm pipe spacing kit in any room?

150mm spacing is suitable for many rooms requiring higher heat output, but the final design should always be based on room heat loss, insulation levels, floor finish and heat source.

What size underfloor heating kit should I choose?

Choose the kit size that most closely matches your heated floor area. For example, a 20m² kit is designed to cover up to 20m² at 150mm pipe spacing, while larger kits are available for bigger areas.

Is 150mm spacing better than 200mm spacing?

150mm spacing provides closer pipe centres and can deliver higher heat output than 200mm spacing. It is often chosen for heat pump projects, lower flow temperature systems or rooms needing stronger heat output. 200mm spacing may still be suitable for well-insulated areas with lower heat demand.

Do these kits include everything needed for installation?

The kits are designed to include the key UFH components required for a typical screeded water underfloor heating installation. Always check the individual product listing for the exact contents of each pack before ordering.