Thermal Bead Insulation

A large harmonious layer - Eliminating any voids, movement whilst encapsulating pipes and ducts. The perfect base for screed.

Exact Mix Concrete’s Thermal Bead Insulation is a specially designed lightweight screed improving the thermal performance and application of internal floors. We are the only company in Essex with the capability to batch the product on-site.



Replacing traditionalPIR/EPS boards


Providing a lightweight void filler, improving the accoustic performance of the building


Can be laid to falls as an insulating layer on flat roofs

Bead insulation being pumped in and installed


A single harmonious layer – No cold bridging

Thermal values as low as 0.041 W/m.K

Ultra lightweight – 130kg/m³ (Floor) – 270kg/m³ (Roof)

Lesser environmental impact – No more off cuts of board

Batched by our mixers means no more over or under ordering and only pay for what you use!

Accoustic insulation 14dB reduction


A2 Fire reactivity class

Encapsulates pipes and ducts – Improved air tightness

What we offer

Lightherm & Longfloor the perfect match

With Lightherm insulating bead and Longfloor liquid cement screed we can install the entire floor! Concrete to insulation to finished screed!

Our services can be catered to every client’s individual needs, range from small domestic extensions to large commercial units. Our approach is versatile and adaptable, ensuring that we can provide the best possible service to meet our clients requirements.

1. Delivery – Thermal Bead Insulation

TBI is delivered by one of our volumetric mixers. Same principles apply, only pay for what you use and no waste!

2. Pumped in & installed

TBI is pumped in and laid to the required level. The pump speeds up the process and keeps the area clean.

3. Curing

TBI is left to cure for a full 24 hours before foot traffic. UFH can be installed after this time.

4. Screed

50mm of liquid screed is applied over the thermal bead floor and allowed 24 – 48 hours before foot traffic.

thermal bead insulation non combustible


Our Ultratherm bead has achieved the Certificate for Factory Production Control (FPC) by CPC (Construction Productions Certification) for the manufacturing process of Expandable Polystyrene Beads (PS5) Intended for use in ready mixed concrete and screeds.
This revered certification recognises and evidences the proven high standard of the TBS product manufacturing and Quality processes in accordance with the relevant clauses of EN 16025-1:2013 and EN 13172:2012.

Independent U value certificates are available on request

Technical Characteristics

Chart showing the technical details of thermal bead insulation