Cheapest underfloor heating online!

0800 141 2643

Call us today for the lowest online prices

Aluminium Spreader Plate for underfloor heating

We are currently out of stock on that item.

RRP: £7.99

Our Price: £4.99 inc VAT

Product Details

Product Details

Commonly used for underfloor heating systems, the measurements of the aluminium heat spreader plates that we stock are 390mm X 1,000mm X 0.3mm. The depth of the grooves in these items is 16mm, with the diffuser plates suitable for 400mm joist centres.

They are also easy to fit, as the spreader plates just have to be laid across traditional joists and fixed into place using a hand stapler.

After installing multi-layered barrier piping into the grooves, place insulation in the space beneath the plates to reduce heat loss and spread warmth evenly across the floor above.

This product can be used in conjunction with 15mm or 16mm pipe.

Please note: If you are looking to purchase spreader plates, you will need to purchase a High Output or Multi Room kit as these have pipe spacings of 200mm.

Underfloor Heating Direct


Position the spreader plates 250mm away from the walls, so that the pipes have sufficient room to bend and return in the other direction.

Use staples, screws or nails to secure the spreader plates as you work. Make sure that these fixings are flush with the surface of the spreader plates.

Leave a 10mm gap between the first and second spreader plate to allow for expansion. After this, insert a small section of pipe into the meeting channels of the two plates, so that you can make sure they are correctly aligned before securing them.

Fully secure the plate before removing the length of pipe to ensure that it is aligned correctly. However, don't let the sections overlap at any point, as this could cause noise when the plates are changing temperature, heating up or cooling down.



This type of aluminium spreader plate is 390mm wide, 1,000mm long and has a depth of 0.5mm. Its weight is 0.56kg, while a box of forty weighs 22.4kg. With groove spaces at 200mm centres, each plate covers 0.39m2.

Heat is spread evenly on the floor surface using the high-standard aluminium, with plates designed to be used with joists at 400mm centres. Due to their practical design, it is simple to quickly install these light-weight items.


Coronavirus Delivery Update

We are working closely with our delivery providers and can confirm all deliveries are unaffected by recent events. All orders you place on our website will continue to receive the same high standards of delivery you have come to expect from Underfloor Heating Direct.

Call us today on 0800 141 2643 to place your order.


Our delivery charges are calculated based on the weight of your entire order. Below is a table illustrating the cost for each weight bracket, please note we cap our delivery costs to a maximum of £50.

Weight From (kg) Weight To (kg) Cost
0 39.99 £10
40 59.99 £20
60 79.99 £30
80 99.99 £40
100+   £50

In addition to our standard delivery service, we can also arrange for delivery on a Saturday or before 10.30am on any working day. This level of carriage comes at an additional cost:

  • Next working day before 10.30am - Additional £5
  • Saturday - Additional £20

We can also arrange for pallet delivery on a three-day delivery, but costs vary depending on the size of the order, so please contact us for details.

Please Note: Wetroom Shower Trays will have 2 - 3 day delivery times and cannot be provisioned under our next day delivery policy.

When will I receive my order?

Orders placed before 3pm on any business day (Monday – Friday) excluding Bank Holidays should be delivered on the next business day (Excluding Saturday, unless the carriage is met) anytime up to 7.00pm.

Our standard next working day delivery does not guarantee next day delivery; however every effort is made by us and the courier to achieve this goal.

Orders taken on Friday after 3pm, Saturday or Sunday will be dispatched on Monday (excluding Bank Holidays) for delivery on Tuesday up to 7.00pm.

Orders placed on Friday before 3pm will be dispatched on Friday for delivery on Monday up to 7.00pm unless the Saturday delivery charge is met (This excludes Bank Holidays).

Please note: We rely upon the services of third party couriers and, whilst we endeavor to always deliver in a timely manner, there are unfortunately a few occasions when the couriers fail to deliver on the appointed day. This happens rarely, but because it does occur, albeit occasionally, we cannot be held responsible for the late delivery of an item, or any costs incurred by customers tradesman unable to work, please ensure you have your materials before booking in any trades.

Shipments sent outside the European Union may be subject to import duties and taxes, which may be levied once a shipment reaches your country. For details of Customs charges please consult your own Customs authorities for the latest rates.

Additional charges for customs clearance must be borne by you; unfortunately we have no control over these charges and cannot predict what they may be. We are unable to reimburse any costs incurred regardless of the circumstances.