Knauf Dritherm Cavity Slab

DriTherm cavity panels are Knauf’s smart solution to cavity wall insulation challenges. These glass mineral wool slabs fit tightly within cavity walls.

What is Knauf Cavity Slab?

Knauf cavity slabs are designed to be installed in masonry cavity walls. They act as a concealed layer that enhances wall performance. They combine outstanding thermal efficiency, water repellence, and breathability to deliver reliable thermal protection all year round.

What Are Cavity Slabs by Knauf Used for?

DriTherm cavity slabs are purpose-made for masonry cavity walls. They offer long-lasting thermal protection that does not sag or slip over time and fit snugly between wall ties to create a seamless insulation layer. This ensures complete uniform coverage.

When correctly installed, they:

• Minimise heat loss.
• Reduce condensation risks by allowing vapour permeability.
• Maintain thermal consistency throughout the structure.
• Improve the overall energy efficiency of the building.

You will often find Knauf cavity panels in:

• New builds.
• Extensions.
• Retrofits.
• Commercial developments where consistent performance and easy installation make all the difference.

If you are constructing with masonry and want insulation that’s safe, durable, and easy to install, DriTherm is ideal for builders seeking a reliable, easy-to-install insulation solution.

Types of Knauf DriTherm

Knauf DriTherm insulation comes in two types: DriTherm 37 and DriTherm 32. Both are high-performance, but each one suits slightly different project needs. This difference mainly comes down to their thermal conductivity values.

Knauf DriTherm 32

DriTherm 32 is the premium option, offering superior insulation thanks to its lower thermal conductivity of 0.032 W/m.K. That means better heat retention and more energy savings.

By using DriTherm 32, you can achieve lower U-values with thinner wall constructions, depending on wall design and U-value targets. This makes Knauf DriTherm 32 the better choice for anyone aiming for top-tier energy performance in a new build.

Knauf DriTherm 37

DriTherm 37 offers solid performance as well, only that its thermal conductivity is slightly higher at 0.037 W/m.K. It is a great fit for projects that call for solid thermal performance without stretching the budget.

Benefits of Knauf DriTherm Slabs

DriTherm cavity insulation offers the following benefits:

1. Both DriTherm 32 and 37 reduce heat loss and keep indoor spaces more comfortable all year round. The main difference is that DriTherm 32 offers slightly better insulation, thanks to its lower thermal conductivity. It works exceptionally well in projects where every bit of energy efficiency counts.
2. Each slab resists moisture, keeping the cavity dry and well-protected.
3. DriTherm’s Euroclass A1 fire rating means you can expect top-tier fire protection that meets the highest safety standards.
4. Breathability is another big plus. DriTherm slabs allow moisture to pass through naturally, preventing condensation from building up and protecting the building over time.
5. The mineral wool fibres in the slabs are tough, durable, and built to last.
6. Installation is quick and straightforward, too. The slabs are lightweight, easy to handle, and friction-fit neatly between wall ties, meaning you don’t need jointing tape or retaining discs.
7. Sustainability. According to Knauf Insulation specifications, up to 80% of the materials used to make DriTherm slabs are recycled.
8. Like Knauf Earthwool, DriTherm 32 is made with ECOSE Technology. This clever process uses a plant-based binder instead of harsh chemicals, making the panels safer and eco-friendly.

Why Choose Our Knauf DriTherm Cavity Slabs?

Insulation Wholesale supplies Knauf DriTherm cavity slabs directly from trusted UK distributors. That means when you buy from us, you get top-quality insulation that meets BS EN 13162 standards. Knauf insulation slabs are highly effective, eco-friendly, and guaranteed to offer sustained insulation year after year.

Ready to lock in comfort and energy savings for the long haul? Knauf DriTherm delivers a precise fit, superior performance, and lasting reliability. Choose your preferred Knauf cavity slab here.

FAQ:

Is Knauf DriTherm breathable?

Yes, it is. DriTherm panels are vapour-permeable, allowing trapped moisture to escape naturally, preventing mould. Their breathability maintains a healthy wall structure.

Knauf Cavity Slab 32 vs 37

The only significant difference between DriTherm 32 and 37 is thermal conductivity, where DriTherm 32 has a value of 0.032 W/m.K and DriTherm 37 has 0.037 W/m.K.

What fire rating is Knauf DriTherm?

DriTherm panels by Knauf are Euroclass A1-rated, the highest fire safety classification under EN 13501-1. This means the slab is non-combustible and will not contribute to fire spread..

What thermal conductivity is DriTherm?

DriTherm insulation is available in two thermal conductivity thresholds: 0.032 W/m.K for DriTherm 32 and 0.037 W/m.K for DriTherm 37. These values differ from U-values. U-value is not determined by a single product. Instead, it measures the overall thermal performance of the complete building system. So to get to the U-value, you consider each insulation material and thickness, as well as the materials making up the walls, floor, or roof.