Why Dritherm Is An Excellent Choice For Cavity Walls
If your home was built after the 1920s and has cavity walls, then cavity wall insulation is definitely the right choice for you. Cavity wall insulation helps save about 35% of the energy that is otherwise lost, through roofs.
There are many ways in which you can insulate cavity walls. You can use PIR insulation, EPS beads or cavity batts. In this blog, we will be discussing why cavity batt insulation, especially Knauf Dritherm could be the right choice for cavity wall insulation.
Knauf Dritherm is odourless, rot-proof, and non-hygroscopic, making it an excellent option for many types of buildings. If you want more information, read on for more information on Knauf Dritherm and why it is an excellent choice for many buildings.
Dritherm is a cavity slab insulation
Knauf Dritherm is a water-repellent and noncombustible glass mineral wool slab that is suitable for external masonry cavity walls. It is made from ECOSE technology and is highly durable. Dritherm is suitable for use in external masonry cavity walls up to 12 metres in height.
Both Dritherm 32 and Dritherm 37 are approved for use in all exposure zones, including those in coastal areas. It is easy to install and cut. Both DriTherm 37 and Dritherm 32 get their names from their thermal performance.
Slabs made of Earthwool DriTherm 37 have a thermal conductivity value of 0.037 W/mK, making them suitable for use in buildings of up to 12 metres. This product also has an A1 non-combustible rating on the Euroclass scale.
Knauf DriTherm 32 has a K-value of 0.032 W/mK, making it one of the best products out there for cavity wall insulation. Just like Earthwool DriTherm 37, Dritherm 32 cavity slabs are knit together to improve their insulating properties. Both these cavity slabs are resistant to moisture.
Cavity Wall insulation
Cavity batts are non-hygroscopic
Earthwool DriTherm 37 and Dritherm 32 cavity slabs take their name from their thermal performance. They are non-hygroscopic which means they do not absorb water easily.
Cavity batt insulation is rarely the cause of damp cavity walls. Cavity batts can, however, worsen damp or moisture-related issues if these conditions are pre-existing.
Therefore it is ideal to call professional cavity wall insulation installers and do a pre-installation check and fix all issues relating to moisture before installing cavity batt insulation. Furthermore, Dritherm insulation does not encourage the growth of fungi or vermin. Dritherm insulation is a BBA-certified product, water-repellent and odourless.
It is cost-efficient
Installing Dritherm in a building can save you money and energy. Their open-cell nature effectively traps warm air in its fabric, thus preventing them from 'sneaking out.
Cavity batt insulation is probably the cheapest way to insulate cavity walls. They are readily available and will pay for themselves in terms of energy savings in just a couple of months.
Ecose Technology
Knauf Insulations have developed Dritherm insulation with Ecose technology, which is a revolutionary binder based on rapidly renewable materials, that uses 70% less energy than traditional binders. This new technology also produces no dye or artificial colour and is therefore environmentally friendly. This also means that the fibreglass fibres are bound tightly into cavity slabs and do not come off easily.
Knauf Dritherm product is made with recycled glass using ECOSE technology, which means that it is both water-repellent and non-combustible. It has been recognized as one of the industry’s most innovative and cost-effective insulations for over 40 years.
Made with Ecose Technology both Knauf Dritherm 32 and Dritherm 37 are free from formaldehyde, which is the most common yet harmful chemical found in insulation.
Non-Combustible:
Dritherm insulation is non-combustible insulation is designed to delay the spread of fire. This is a critical aspect of fire safety, especially when a fire is already well underway.
Non-combustible materials undergo testing to determine their contribution to fire development and spread. This process includes assessing the material’s flame spread, smoke release, and combustibility. Both Dritherm 37 and Dritherm 32 have a Euroclass A1 Reaction to Fire Classification.
Environmentally friendly
Knauf Dritherm insulation is made from renewable and recycled materials. Dritherm insulation does not contain harmful gasses, such as formaldehyde and does not emit toxins. It also repels insects.
Dritherm has many advantages over other types of insulation. It can be recycled. The ECOSE (r) Technology used by Knauf Insulations helps improve the air quality. It is 70% more efficient than blown-in insulation and does not produce any formaldehyde.
Additionally, fibreglass material is comfortable to handle and does not contribute to air pollution. It is lightweight and easy to install.
Installing Cavity Batt Insulation:
To install DriTherm(r) Cavity Slabs, first cut them to the correct course. Cut them at 450mm and 900mm centres. Be sure to allow an extra 5mm for compression, which will create close butt joints. Cut the DriTherm(r) Cavity Slabs along the ties, and then position the first course of insulation batts on top of them. Make sure to support the first course on the ties, so that it does not interfere with the footing of the cavity. Continue cutting the DriTherm(r) Cavity Slabs at 900mm centres.
When installing DriTherm Cavity Slabs, it is important to be very careful and not tear the insulation slab. Cut them carefully to fit into the cavity, ensuring that the edges are flush. When removing the old insulation, you should remove all debris. If you want to cut the DriTherm Cavity Slabs to the chamfer shape, you can use a sharp saw or sharp utility knife. Both Dritherm 32 and Dritherm 37 fit standard tie spacings perfectly.
In Conclusion:
Knauf Dritherm insulation is a perfect cavity wall insulation material. It gives you damp-free cavity walls and also saves both energy and money. However, we do recommend a pre-installation check before installing Dritherm cavity wall insulation.
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