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Designed for professional underfloor heating and wet heating installations, the Multilayer 16 x 500 m Plain Underfloor Heating Pipe brings durability, flexibility and reliable performance to a wide range of heating applications. This plain, multilayer composite pipe features a tough PE-RT (Polyethylene of Raised Temperature Resistance) inner and outer jacket with a butt-welded aluminium core, delivering the strength and thermal stability installers demand.
The aluminium layer provides diffusion tightness and minimal thermal expansion, meaning the pipe holds its shape and performs efficiently under changing temperature conditions — ideal for both new build and retrofit underfloor heating systems. Its continuous 500 m coil length helps reduce joints and fittings on site, simplifying layouts and saving labour time.
Thanks to its robust construction and good flexibility, this multilayer pipe is well suited to wet underfloor heating loops, radiant wall/cooling circuits, central heating circuits and potable water applications where system endurance and long service life are priorities.
Key Features
Technical Specification
TJ’s Tip
For best results, plan your pipe route ahead of time and uncoil gradually to avoid kinks. Using continuous lengths from the 500 m coil reduces joints and fitting time, improving system integrity and long-term performance — especially important in underfloor heating loops where uniform heat distribution matters.
| Brand | PH Ross |
|---|---|
| Provided by | TJ O'Mahony |
| Delivery Rule | large & heavy |
Last update: 17 August 2026
We offer reliable delivery services throughout the Republic of Ireland, with straightforward delivery charges for both trade and DIY customers. Delivery options are confirmed at checkout based on your order and delivery Eircode.
| Delivery Type | Delivery Area | Delivery Charge | Delivery Time |
|---|---|---|---|
| Small Items | Republic of Ireland | €9.99 | 3–4 working days |
| Large & Heavy* | Standard delivery area | €29.99 | 5–7 working days |
| Extra Large* | Standard delivery area | €50.00 | 5–7 working days |
| Paint 5L or less** | Standard delivery area | €19.99 | 5–7 working days |
*Standard delivery policy. Promotional delivery rates may apply during campaigns.
30-Day Returns
TJ O'Mahony offers a 30-day returns policy on eligible unused products, giving you additional time beyond the statutory 14-day cooling-off period applicable to most online consumer purchases.
Eligible products can be returned for a refund or exchange within 30 days of delivery or collection, provided they are unused, in their original and re-saleable condition, complete with all supplied parts and accessories, and accompanied by proof of purchase.
Please note: Return restrictions apply to certain products, including Mixed Paint, certain Bagged Building Products, Solid Fuel, Special Order, Non-Stock and Catalogued Products. Your statutory rights in relation to faulty, damaged, incorrectly supplied or non-conforming goods are not affected.
