AD-CLIP heating pipe secured to floor insulation with tacker clips before screeding

Water underfloor heating solution

AD-CLIP In-Screed Tacker Clip System

Water underfloor heating for new screeded floors, with flexible clip fixing for bends and irregular layouts.

AD-CLIP secures heating pipe to suitable rigid insulation with individual tacker clips. The pipe follows your planned layout, then the screed surrounds it to distribute heat beneath the finished floor.

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The system behind the solution

Choose Your AD-CLIP Kit

Pipe clipped to rigid insulation, ready for a new screeded floor. Pick a standard kit or ask us to design the layout.

AD-CLIP kit with pipe, tacker clips, edge insulation, manifold, pump and fittings
A complete system for a new screeded floor

Pipe, clips, edge insulation and controls vary by kit size.

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Choose a standard kit

Select the heated area that matches your project.

Kit size

80m² kit contents vary by size. Review the full kit details before ordering.

Selected kit
£834.99 inc. VAT
Unsure of the right size or zoning? See full kit contents and specifications

AD-CLIP project support

Get an AD-CLIP Design for Your Project

Send us your plans and floor details. We can help specify the pipe circuits, manifold and controls for your installation.

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AD-CLIP heating pipe secured to floor insulation with individual tacker clips

Installation overview

How AD-CLIP Is Installed

Follow the project design and current installation guide. The main stages are:

  1. 1Confirm heat loss, flow temperature, manifold position, circuit lengths and screed specification.
  2. 2Prepare the base and fit the specified rigid insulation and perimeter edge insulation.
  3. 3Fit any membrane required by the floor specification.
  4. 4Mark out the designed pipe routes and spacing.
  5. 5Secure the pipe with compatible tacker clips, adding support at bends where needed.
  6. 6Connect, fill and pressure-test the circuits before screeding.
  7. 7Lay and cure the screed, then commission the system to the current instructions.
Individual tacker clips securing water underfloor heating pipe to insulation

Choosing your fixing method

AD-CLIP or AD-RAIL?

Both systems hold heating pipe in place before screeding. Choose AD-CLIP when individual fixings make it easier to follow bends, obstacles or an irregular room layout. Compare AD-RAIL for regular rows guided by grip rails.

  • Place individual clips along the designed pipe route.
  • Add fixings at bends and returns where extra restraint is needed.
  • Use a compatible tacker tool to speed up repeated fixing.
  • Inspect the complete pipe layout before it is covered by screed.

Plan the complete installation

Where AD-CLIP Works Best

Consider AD-CLIP when the project allows for insulation and a new screed, with enough height for the complete floor build-up.

  • New builds and extensions with a new screeded floor.
  • Major renovations where the floor is being rebuilt.
  • Suitable solid or beam-and-block floors.
  • Rooms with bends, obstacles or irregular pipe routes.
Typical AD-CLIP in-screed water underfloor heating floor build-up

Typical AD-CLIP Floor Build-Up

From the structural floor upwards, a typical build-up includes the layers below. The exact specification depends on your project.

  1. 1Prepared structural floor
  2. 2Specified damp-proofing or membrane, where required
  3. 3Rigid floor insulation, with perimeter edge insulation
  4. 416mm heating pipe held by AD-CLIP tacker clips
  5. 5Specified pumped or sand-and-cement screed
  6. 6Compatible floor finish with the required adhesive or underlay
16mm
PERT-AL-PERT heating pipe
200mm
Designed pipe centres
50mm
Current pipe-clip length
50 / 65mm
Typical pumped / sand-cement screed minimums

AD-CLIP project advice

Frequently Asked Questions

Clear answers about tacker clips, insulation, screed depths and planning an AD-CLIP installation.

What is the AD-CLIP system?

AD-CLIP is an in-screed warm-water underfloor heating system that uses individual tacker clips to secure 16mm PERT-AL-PERT pipe over suitable rigid insulation.

How is AD-CLIP different from AD-RAIL?

AD-CLIP uses individual tacker clips, making it easy to follow bends and irregular routes. AD-RAIL holds pipe in grip rails that guide regular rows. The heat output of either system depends on the heating design and complete floor build-up.

What pipe spacing is AD-CLIP designed around?

The current AD-CLIP kit specification is designed around 200mm pipe centres. The final circuit layout must follow the project heat-loss and hydraulic design.

What screed depth is required?

Current system guidance states typical minimum depths of 50mm for a suitable pumped screed or 65mm for a sand-and-cement screed. Confirm the actual depth and construction with the screed manufacturer and project designer.

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What insulation is used beneath AD-CLIP?

The system is normally installed over suitable rigid PIR insulation. The insulation thickness, compressive strength and clip compatibility must suit the complete floor design.

Is a tacker gun required?

A compatible tacker tool is the practical method for installing repeated clips efficiently. The clip and tool must match the pipe size, insulation and specified fixing system.

Can AD-CLIP form a multi-zone system?

Yes. Multiple circuits and room zones can be designed around a suitable manifold and compatible controls. The manifold size and zoning arrangement must be established before ordering.

How do I choose the correct AD-CLIP kit?

Start with the heated area, room layout, floor construction, heat source and number of zones. The design should confirm pipe quantities, circuit lengths, manifold ports and controls.

Browse AD-CLIP kits to check the available sizes and contents, or request a quote for help specifying your system.