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Promat PROMAFOUR-HT JOINT FILLER ǀ 1.5kg High Temperature compound

1.5kg Promat PROMAFOUR-HT JOINT FILLER - High Temperature - Fire Protection
Promat PROMAFOUR-HT JOINT FILLER ǀ 1.5kg High Temperature compound
  • Colour - Beige
  • Classification temperature 1000 °C
  • Density 1700 kg/m3
  • Processing temperature > 10 °C
  • Excellent bonding on masonry and concrete surfaces
Estimated delivery:
In Stock
£ 166.58
Ex VAT: £ 138.82
  • Brand: Promat®
  • Model: 1.5kg HT JOINT FILLER
  • Weight: 1.50kg
  • SKU: 1500g
  • Product code: P1-1015

Options available

This product has a minimum quantity of 5

1.5kg Promat PROMAFOUR-HT JOINT-FILLER is a greyish-yellow, ready to use filling and levelling compound made of refractory boards, mix of clay and an inorganic binder for filling and levelling out PROMAFOUR construction boards for mantelpieces.

Due to its consistency, PROMAFOUR-HT JOINT-FILLER can be easily caulked or troweled, depending on the application.

When used for filling gaps and joints, we recommend dispensing PROMAFOUR-HT JOINT-FILLER by caulking, as this guarantees easy and optimal distribution and penetration.

PROMAFOUR is a highly-durable, non-combustible high plasticity filler suitable for fireplaces and wood burning stoves.

Promat PROMAFOUR JOINTFILLER helps to prevent the spread of fire and can resist continuous high temperatures of up to 1000°C.

1.5kg PROMAFOUR-HT is a safe and reliable product approved by HETAS and compliant with Building Regulations Part J.

The finished surface can be coated with any standard wall paint.  




Colour: Greyish-yellow

Classification temperature: 1000 °C

Consistancy: Pasty

Processing temperature: > 10 °C

Density: 1700 kg/m3

Substrate Dry: dust-free, grease-free

Storage: > 5 °C: 3 months

Size: 1.5kg bucket


Key points:

 · Ready for use.

 · High plasticity of the joint.

 · Quick and easy to install.

 · Safe and highly-reliable.

 · Aesthetics and comfort.

 · Reduced risk of cracking.

 · Resistance to fire - 240 minutes.

 · Fire rated - class A1.

 · Non-combustible material.

 · Can be applied mechanically.

 · High temperature resistant up to 1000°C.

 · Compliant with Building Regulations Part J.

 · HETAS Approved Product AUX036.

 · Excellent bonding on masonry and concrete surfaces.

 · Can be reused when the container is closed properly after each use.



 · The surface has to be clean, dry and free from dust.

 · We recommend applying PROMAFOUR-HT JOINTFILLER by cartridge, although application using a trowel is also possible.

 · A smooth and even surface can be easily achieved using a spatula or trowel.

 · Thinner layers up to 1mm will dry within 2 to 3 hours.

 · Thicker layers from 2mm to 3mm will need 6 to 8 hours to be dry and hard enough to be worked on (sanded, etc.).

 · Can be coated with any standard wall paint.


*Further information may be found in our Downloads section.

Fairly easy to access to all PDF files.

Datasheet ǀ Declaration of Performance - DoP ǀ BBA Certificate ǀ Installation Guide ǀ Certificates ǀ Brochure ǀ SPEC Sheet ǀ 


*Special Product - Non returnable cancelable.

Board covarage 3.00 m2
Colour Greyish-yellow
Consistancy Pasty
Density 1700 kg/m3
Profile Dust-free ǀ Grease-free
Storage > 5 °C (3-6 months)
Weight 1.50 kg
Fire Classification Non-combustible
Building Regulations Compliant ǀ Part J
Fire performance 1000 °C
Application Temperature > 10 °C
Shipping method Articulated Vehicle ǀ Courier
Applications Fireplaces and stoves
Decoration Paints ǀ Wallpapers and tiles
ETA Notification Yes
Features Ready to use filling and levelling compound
Manufacturer Promat PROMAFOUR®

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We deliver insulation materials to Mainland UK only. Deliveries to Highlands, Northern Ireland, Isle of Wight etc.. might be possible at additional cost.
We offer free delivery on most of the orders above £300 (excluding VAT) (except special products - shipping cost via courier - products marked ''Request A Quote'')

Delivery of some insulation materials might be extended due to the current situation (Covid-19, stock shortages, allocations).
If you need materials quickly please contact us - we will do our best to help you source materials needed.

We do not deliver on weekends and bank holidays. Sometimes we can deliver on Saturdays - please check with us before placing the order.
If you need any further information please contact us tel. 02081910776

We can help to calculate price per m2 or linear meter (one meter in length) cost, please just contact us via phone 02081910776, email or live chat. Alternatively, you can work it out yourself quickly and easily: to get cost per meter square please divide price shown in orange area by ''Required area (m2)'' Example price of £28.80 divided by board coverage 2.88m2 = cost of £10.00 per m2.


No matter whether you choose a local installer or a national company, there’s a few tips to help you find the right installer for your home insulation improvements, such as asking for recommendations and making sure that they’re part of a certification scheme. This makes sure that they have the right skills and standards of workmanship to carry out the installation, and you can be sure that they know exactly what they are doing.


1. Thermal inspection picture in portfolio

It’s worth seeing a installer’s previous work. There’s no harm asking if you can see any properties nearby that they’ve installed insulation in. Best way would be to see Infrared Thermal Imaging Inspections. Thermal cameras spot small, but key changes in temperature in different areas of a house, identifying problematic areas that the human eye never could and some that a visual inspection could only hypothesize.

2. Reviews

Along with checking recommendations and previous work, finding reviews online can often be a great way to find out if they provide a good service or not. However, it’s best not to solely rely on reviews you may find or review websites, as there’s no controlling who writes them.

3. Compare prices

Comparing prices will also ensure companies can’t take advantage of you and give you a fair price. 

4. Word of Mouth

The best way to find a great insulation installer is through recommendations. Make sure you ask friends and family. They will most likely give you their honest opinion and can tell you from first hand experience.


Whether you require a wall, cladding, external wall, loft or floor insulation fitted, you can find and hire your local insulation installers from popular UK web pages. A simple internet search will return thousands of potential installers near your area.



We are the stockist of construction materials and related products for both trade and DIY from most recognizable brands in the UK like Cordek, RCM, Promat, Rockwool, Isover, Celotex, Xtratherm, Ursa, Low-E, Cedral, Kingspan, Dufaylite, British Gypsum, K-rend, Ecotherm, Iko enertherm, Kay-Metzeler, Terrawool to allow you to complete your insulation job on time at competitive prices and the highest standards.


Whether you are a large company or a DIYer, if you need a large amount of insulation materials, we can offer quantity discounts at the best prices. Please contact us and our friendly customer service will try to find the best and cheapest solutions for you. We value your time and we will try to deliver the products as soon as possible at a reasonable price to your construction site or house. The UK's leading insulation supplier near you and your needs. Price List available upon request.
1.5kg Promat PROMAFOUR-HT JOINT FILLER - High Temperature - Fire Protection
Promat PROMAFOUR-HT JOINT FILLER ǀ 1.5kg High Temperature compound
£ 166.58