Watts RadiantPEX+ Slab Heating PEX Tubing

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American made tubing for quality reliable systems.

RadiantPEX+ tubing with EVOH (oxygen barrier) is a 4-layer tubing used for radiant heating, snow melting, and distribution piping. This cross-linked tubing offers high flexibilty, high temperature resistance, and long life. It can be used with CinchClamps, CrimpRings, and Compression fittings. The extra low-friction outer layer makes it easier to pull through joists, reduces expansion noise, and protects the oxygen barrier against job-site abuse. RadiantPEX (3-layer) and RadiantPEX+ is manufactured to ASTM F-876 and F-877 and to SDR9 dimensions and carries a 30-year warranty for residential and commercial heating and snow melting applications.

Watts Heating PEX Section ViewFeatures

  • Manufactured to ASTM F-876 and F-877 and to SDR9 dimensions

  • Highly flexible and versatile cross-linked polyethylene tubing with oxygen barrier

  • Can be used with CinchClamps, CrimpRings, and Compression fittings

  • For radiant heating, cooling, snow melting, and distribution piping

 Free Estimates

Watts RadiantPEX+ Selection Table

Nominal IDODWall ThicknessAvg. IDBend RadiusVolume gal/100 ft.Material
3/8 in..500 in..070 in..350 in.4 in..50 gal.Radiant PEX+
1/2 in..625 in..070 in..485 in.5 in..92 gal.Radiant PEX+
5/8 in..750 in..088 in..584 in.6 in.1.34 gal.Radiant PEX+
3/4 in..875 in..097 in..681 in.7 in.1.84 gal.Radiant PEX+
1 in.1.125 in..125 in..875 in.9 in.3.04 gal.Radiant PEX+
1-1/4 in.1.375 in..153 in.1.069 in.11 in.4.53 gal.Radiant PEX
1-1/2 in.1.625 in..181 in.1.263 in.13 in.6.32 gal.Radiant PEX
2 in.2.125 in..236 in.1.653 in.17 in.11.15 gal.Radiant PEX
Watts PEX Tubing

3/8 in. Watts Slab PEX

Small, cheap and flexible. Carries a lot of heat for it's size.

Watts PEX Tubing

1/2 in. Watts Slab PEX

The backbone of the industry. Perfect balance of price, length and flexibility.

Watts PEX Tubing

5/8 in. Watts Slab PEX

For when you need a little more length, heat or flow.

Watts PEX Tubing

3/4 in. Watts Slab PEX

For large areas. Light commercial slabs benefit from the extra length and heat

Watts PEX Tubing

1 in. Watts Slab PEX

For large areas. Light commercial slabs benefit from the extra length and heat

Watts PEX Tubing

1-1/4 in. Watts PEX

PEX-A Large diameter for supply runs to manifolds.

Watts PEX Tubing

1-1/2 in. Watts PEX

PEX-A Large diameter for supply runs to manifolds.

Watts PEX Tubing

2 in. Watts PEX

PEX-A Large diameter for supply runs to manifolds.

PB032061-600
409.19 409.19 409.19 USD
3/8 in.-600 ft. Coil Watts Radiant BarrierPEX+
PB032081-100
109.51 109.51 109.51 USD
1/2 in.-100 ft. Coil Watts Radiant BarrierPEX+
PB032081-1000
1,087.17 1,087.17 1087.17 USD
1/2 in.-1000 ft. Coil Watts Radiant BarrierPEX+
PB032081-2
0.00 0.0 USD
1/2 in.-2 ft. Sample, Watts Radiant Barrier PEX+
PB032081-250
272.55 272.55 272.55 USD
Watts Radiant 1/2 in. RadiantPEX+ x 250 ft. Coil
PB032081-300
326.70 326.70 326.7 USD
1/2 in.-300 ft. Coil Watts Radiant BarrierPEX+
PB032081-500
543.58 543.58 543.58 USD
Watts Radiant 1/2 in. RadiantPEX+ x 500 ft. Coil
PB032081-600
652.79 652.79 652.79 USD
1/2 in.-600 ft. Coil Watts Radiant BarrierPEX+
PB032101-1000
1,363.37 1,363.37 1363.3700000000001 USD
Watts Radiant 5/8 in. RadiantPEX+ x 1000 ft. Coil
PB032101-1200
1,636.53 1,636.53 1636.53 USD
5/8 in.-1200 ft. Coil Watts Radiant BarrierPEX+
PB032101-300
409.44 409.44 409.44 USD
5/8 in.-300 ft. Coil Watts Radiant BarrierPEX+
PB032101-400
545.71 545.71 545.71 USD
Watts Radiant 5/8 in. RadiantPEX+ x 400 ft. Coil
PB032101-500
681.99 681.99 681.99 USD
5/8 in.-500 ft. Coil Watts Radiant BarrierPEX+
PB032101-600
818.87 818.87 818.87 USD
5/8 in.-600 ft. Coil Watts Radiant BarrierPEX+
PB032121-100
157.87 157.87 157.87 USD
3/4 in.-100 ft. Coil Watts Radiant BarrierPEX+
PB032121-1000
1,575.69 1,575.69 1575.69 USD
3/4 in.-1000 ft. Coil Watts Radiant BarrierPEX+
PB032121-1200
1,889.01 1,889.01 1889.01 USD
3/4 in.-1200 ft. Coil Watts Radiant BarrierPEX+
PB032121-300
472.71 472.71 472.71000000000004 USD
3/4 in.-300 ft. Coil Watts Radiant BarrierPEX+
PB032121-4
10.17 10.17 10.17 USD
3/4 in. - 4 ft. Stick Watts Radiant Barrier PEX+
PB032121-500
788.45 788.45 788.45 USD
3/4 in.-500 ft. Coil Watts Radiant BarrierPEX+
PB032121-600
945.42 945.42 945.4200000000001 USD
3/4 in.-600 ft. Coil Watts Radiant BarrierPEX+
PB032161-100
264.64 264.64 264.64 USD
1 in.-100 ft. Coil Watts Radiant BarrierPEX+
PB032161-300
793.32 793.32 793.32 USD
1 in.-300 ft. Coil Watts Radiant BarrierPEX+
PB032161-600
1,586.03 1,586.03 1586.03 USD
1 in.-600 ft. Coil Watts Radiant BarrierPEX+