Isover Polterm Max Plus is a stone wool slab covered with a black glass veil on one side. Certified by the British Board of Agrément (BBA), it can be considered for thermal and acoustic applications within ventilated rainscreen cladding and overcladding systems.

Isover Polterm Max Plus contains a water repellent additive to limit water absorption. The black glass veil can contribute to the aesthetics of the installation, as it prevents any ‘show through’ of the insulation from behind the façade system.

Product Features

1200 x 600mm stone wool slabs featuring black glass veil on the external side
Available in thicknesses from 50-200mm
BBA approved – certificate 19/5672
Manufactured with a water repellent binder

Fire Classification

Euroclass A1 Reaction to Fire classification according to EN 13501-1.

Product Benefits

Thermal Performance - Thermal conductivity of 0.035 W/m•K. Helps to reduce heat loss within the building envelope and as a result decreases energy costs.
Acoustic Performance - Can help improve the acoustic performance of the external envelope, reducing unwanted external noise such as weather, aircraft, vehicles and trains.
BBA Certified - Isover Polterm Max Plus has been assessed by the BBA as fit for use in defined applications (rainscreen cladding systems and timber or steel frame constructions) if installed, used and maintained as set out in the certificate. Please read the certification at insulation-UK.com/BBA for full details and restrictions.
Fire Classification - Achieves a Euroclass A1 Reaction to Fire classification, according to EN 13501-1.
Ease of Install - Straightforward to install using standard insulation retaining fixings. The slabs will knit together when tightly butt jointed, eliminating gaps which could compromise performance.

Key Considerations

When using Isover Polterm Max Plus, you need to satisfy yourself that use of the product meets all relevant national Building Regulations and guidance as well as local, national and other applicable standards relevant for your construction or application, including requirements in relation to fire and applicable height restrictions.

Please refer to the following product documents:

Product Datasheet
BBA Certificate
Declaration of Performance
Safe Use Instruction Sheet

BBA – Isover Polterm Max Plus for use in rainscreen cladding systems, timber or steel frame constructions