Knauf DriTherm Cavity Slab

What Are the Benefits of DriTherm Cavity Slabs?

One of the biggest advantages of Knauf Insulation DriTherm cavity slabs is the fact that they are specifically designed to be compatible with standard vertical wall ties, banishing the need for retaining discs. The slabs are rigid and compact; eliminating air pockets and the need for expensive equipment. It has very high levels of thermal resistance allowing compliance with the relevant Building Regulations

Another reason to consider DriTherm is its superior environmental sustainability. Thanks to its low environmental impact, it is eco-friendly and classified as zero ODP and zero GWP. The slabs are made from up to 80% recycled glass, minimising the need for mineral raw materials. Better yet, Dritherm incorporates the environmentally friendly ECOSE technology: a bio-binder that is made from natural, raw materials that are 70% less intensive to create than typical binders. Such technology enhances the environmental credentials without impacting the thermal, fire or acoustic performance.

Are Knauf DriTherm Cavity Slabs Fireproof?

Knauf Insulation DriTherm 32 and Knauf Insulation DriTherm 37 slabs are rated A1 on the Euroclass scale. The European Reaction to Fire classification system (Euroclasses) is the EU common standard for assessing the qualities of building materials in the event of a fire.

Insulation materials are measured against up to five tests and given a rating from A1 (non-combustible) to F (combustible). With an A1 rating, these slabs achieve the highest possible certification on the Euroclass scale - which in essence, means they provide excellent protection against fire and minimise the risk of fire spreading.

Is Knauf Cavity Wall Insulation Waterproof?

Although Knauf Insulation DriTherm 32 and DriTherm 37 cavity slabs are water-resistant (thanks to their water repellent additive), this does not mean that they are waterproof. Whilst the slabs are able to resist the penetration of water to a certain degree, they are not completely impenetrable.

Both the DriTherm cavity slab 32 and DriTherm cavity slab 37 have a water vapour resistivity of 5.00MNs/g.m. Earthwool slabs are non-hygroscopic and are therefore approved to use in all exposure zones, as they will not absorb moisture. Another welcome benefit of the water-resistant binder used in Knauf slabs is that it eliminates the chance of rot, vermin, or fungus.

For this reason, we highly recommend Knauf slabs for people who live in high-rainfall areas. People choose Knauf Earthwool slabs when they need full-fill insulation that has a long lifespan. The nature of full-fill insulation slabs further ensures that they do not sag or droop over time - promising maximum protection for the lifetime of your build.

How to Cut Knauf Insulation DriTherm Cavity Slabs?

Knauf Earthwool wool cavity slabs are very light and malleable. You can simply use a sharp serrated knife to slice through Dritherm 32 and DriTherm 37. 

Always ensure you take proper safety precautions. Before you cut and fit into masonry cavity external walls, we recommend wearing goggles, aprons, and even protective glasses. If you are concerned about safety precautions, always consult with a professional.