Underfloor Heating Spreader Plate Double Grooved 390 x 1000 (200mm centres)

£4.50 Incl. VAT

In stock

Free delivery over £150 (Exceptions Apply)
Next Day Available | 30 Day Return Policy
Further Delivery Information


Underfloor Heating Double Groove Spreader Plate

Underfloor Heating Spreader Plate,  for suspended floors constructions, fitting on top of floor joists or battens at the standard 400mm centres. Because of the 200mm pipe spacing these plates are commonly used with Boiler systems. If you require Triple Groove Plates these are also available. Plates are also commonly referred to as a diffuser plates or trays.

The Aluminium plates, can be nailed, screwed or stapled onto the top of the floor joist or  batten. The aluminium underfloor heating spreader plates can give an output of 77 watts per m² at room temperature 20 degree C. But this is subject to many different factors that can vary the output as well and the floor temperature.

To calculate how many plates you require, multiply your heated floor m2 by 2, this will give you the 80% coverage.

When installing the plate we strongly recommend that the plate sits tightly beneath the floorboards. This is so that they are in direct contact with the sub-floor offering maximum heat transfer. We highly recommend using Rockwool or similar, which should be fitted directly underneath the plate.

The Metal Diffuser/Spreader Plate is one of the most common and effective ways of having underfloor  on a first floor. These plates can also be used with regroove insulated panel.

For Box Quantities – 40 x Plates 

For Bulk Order Please Contact the office of 01684 580554 or sales@countyonline.co.uk

Fit From Below Spreader Plates also Available – FFB Plate


  • 390 x 1000mm
  • 0.45 thickness
  • Strengthened Aluminium
  • Pipe Spacing 200mm
  • Omega Grooves
  • Fit From Above
Underfloor Heating Spreader Plate Double Grooved

Delivery Information

We have multiple delivery options

  • Next day carrier
  • 2-3 day carrier
  • Click & Collect from store


The cost of the carriage will be displayed before your final checkout. Free delivery is available on most items for orders over £150, exceptions do apply.


  • Orders will only be dispatched and delivered on weekdays.
  • Orders for the next working day delivery must be placed before 2 pm, this gives us time to pick and pack before the carrier arrives to collect.
  • We aim to dispatch all carrier delivered items within 48hrs, and all items delivered on our own transport within 5 days, Monday to Friday.
  • A dispatch email will be sent when your goods leave us, if delivery is by the carrier, this email will include tracking information. If your order is delayed for any reason, we will contact you.


We pride ourselves on our customer service but mistakes can happen. If you receive an incorrect or faulty item, please notify us within 30 days to arrange a refund, return or exchange.

Underfloor Heating Spreader Plate Double Grooved