Skip to product information
1 of 2

Tekwarm

Tekwarm UFH Moisture Resistant Overlay Board | 1200mm x 600mm x 9mm

Tekwarm UFH Moisture Resistant Overlay Board | 1200mm x 600mm x 9mm

SKU:BM01763


Ideal for most floor finishes

Moisture resistant

Tongue & grooved edges for easy installation

Regular price

£12.90

inc. vat

Regular price Sale price £12.90

inc. vat

£10.75

ex. vat

Sale Contact us for availability
Shipping calculated at checkout.
Standard delivery by
holidays_raw="2026-04-03, 2026-04-06, 2026-05-04, 2026-05-25, 2026-08-31, 2026-12-25, 2026-12-28, 2027-01-01," | cutoff=17:30 | days=5

Save 5% off selected Tekwarm products!

*min spend £500.00 ex.vat. Applied at checkout. Cannot be used with any other offers/discounts

View full details

Tekwarm UFH Moisture Resistant Overlay Board | 1200mm x 600mm x 9mm

Tekwarm Overlay MR-MDF Board, the perfect solution for enhancing the performance of your underfloor heating system. This overlay board is specially designed to be used with Tekwarm Chipboard UFH panels, providing a smooth and reliable surface for various flooring finishes, including carpets, vinyls, laminates, and solid wood block flooring. 

Key Features

High-Quality Construction:
Tekwarm Overlay MR-MDF boards are manufactured from Tongue & Groove moisture-resistant MDF, identified by its green tint core appearance. This ensures excellent durability and performance in interior humid conditions.

Dimensions:
Each board measures 1200mm x 600mm x 9mm, featuring tongue and grooves on all edges for easy and seamless fitting.

Compliant and Reliable:
Tekwarm Overlay MR-MDF boards are manufactured in accordance with EN 622-5, guaranteeing the highest standards of quality and safety.

Ideal for Tiling:
When tiling over the overlay board, simply follow the tile manufacturer's instructions, utilizing an S1 Tile adhesive and a decoupling membrane in conjunction with the board for optimal results.

Easy Installation:
The boards should be fitted in a brick bond pattern at a 90-degree orientation to the direction of the UFH boards, with glued T&G joints. Mechanical fixing should be done with suitable screws at maximum 300mm centres.

Please Note:
While we provide accurate information in this product description, different circumstances may require adjustments in the application. We cannot be held responsible for any loss or damage due to incorrect use or variations in working conditions beyond our control. Users are solely responsible for the consequences of their product use.

Quick Technical Overview

  • Board size 1200 × 600 × 9 mm
  • System type Moisture-resistant overlay

Technical Specifications

Dimensions

SKUBM01763
BrandTekwarm
RangeUFH Moisture Resistant Overlay Board
MPNPR008038
Length1200 mm
Width600 mm
Thickness9 mm

Coverage & packs

Coverage per board0.72 m²

Material & performance

Core materialMoisture-resistant MDF (green core)
Moisture rating / gradeMoisture-resistant MDF

Installation requirements

Overlay layer notesUsed as overlay over UFH boards before final floor finishes
Fixing methodMechanical fixing with screws at max 300 mm centres
Fixing type / sizeSuitable screws for MDF (max 300 mm centres)
Fixing notesFit in brick bond pattern at 90° to UFH boards; glue T&G joints and screw.

Suitability

Suitable subfloors\tInstalled over UFH panels
Suitable floor finishesCarpet, vinyl, laminate, solid wood block, suitable for tiles with membrane + S1 adhesive

Frequently asked questions

What underfloor heating panels should this overlay board be used with?

This overlay board is designed to be installed over Tekwarm routed UFH panels, typically chipboard or OSB types. It provides a smooth wearing surface between the routed panels and your final floor finish.

What are the dimensions and thickness of this overlay board?

The board measures 1200 mm × 600 mm with a thickness of 9 mm(including tongue and groove edges). It’s moisture-resistant MDF to help maintain stability in interior conditions.

What is this overlay board used for in an underfloor heating installation?

It sits on top of the UFH panels to protect the heating pipes below, provide a flat continuous surface, and make the substrate suitable for common flooring finishes such as carpets, laminates, vinyls, or engineered wood.

Does this overlay board add structural support?

No. While it helps create a flat, protected top layer, this board is not intended as a structural layer; the primary support comes from the routed floor panels and subfloor beneath.

What types of floor finishes can be installed over this overlay board?

It is suitable for carpet, vinyl, laminate and engineered wood finishes when installed in accordance with the flooring and UFH system manufacturers’ guidelines.

How should the board be cut or trimmed on site?

The board can be cut with standard carpentry tools to fit edges and around obstructions —always keep blade paths clear of any heating pipework below.

When should I use this overlay board instead of plywood or other alternatives?

Use this overlay when you need a dedicated UFH-compatible covering board with tongue & groove for seamless joints, especially where moisture resistance is beneficial. Plywood may be chosen if additional structural support is required.

Pallet Delivery Charges

Services Delivery Charge
Standard Delivery:  3-5 working days £25.00
Express Delivery:  2-3 working days £35.00
Next Day Delivery:  Order before 12pm (midday) £50.00

Parcel Delivery Charges

Services Delivery Charge
Express Parcel £9.99

Collections

To collect your order, please email us at sales@theufhgroup.co.uk with your contact details, along with the products and quantities you require. Our team will review your email and respond with a secure payment link. For your security, we do not process payments over the phone. Once payment is received, your order will be processed, and our team will notify you when it’s ready for collection.


  • Delivery charges will automatically be calculated within the checkout process.
  • Orders are only processed for delivery between 8:00am – 5:00pm Monday to Friday, excluding bank holidays.
  • Moffett offload will be used for large bulky deliveries and only when agreed with you.
  • Please advise of any access issues when ordering.
  • Delivery is kerbside only.
  • If your delivery is incorrect or damaged, please notify us immediately and mark any issues on the delivery note.

Where We Deliver

Delivery Areas

  • We have a fleet of FORS delivery vehicles with Moffett mechanical offloads that deliver nationwide. Sometimes we may use third-party carriers for smaller orders.

Product Delivery Times

  • The vast majority of orders are dispatched within 2 working days. This can occasionally be up to 4 working days — please contact us if you need something urgently.
  • Speciality items may take up to 5–7 working days.
  • We aim to contact you within 24–48 hours of your order being placed to confirm delivery times and dates.

Customer Reviews

Based on 12 reviews
92%
(11)
8%
(1)
0%
(0)
0%
(0)
0%
(0)
G
G.P.

Great shop, on time and on price

A
Anonymous (Newcastle upon Tyne, ENG)
Very good and very easy to

Very good and very easy to install

O
Oliver B. (City of London, ENG)
Came quickly and unbroken

Came quickly and unbroken, good product. Cheers

A
Anonymous (Lewisham, ENG)
Fast delivery

Fast delivery, I recommend it, only the delivery driver is crazy as a sheep's horns

A
Alfonso C. (Harringay, ENG)
Fast

Fast delivery

A
Anonymous
Very good

Very good service

Get in Touch with The UFH Group