Knauf Dritherm 37 - Mineral Wool Cavity Wall Insulation
Request a Quote
Our team is happy to fulfil custom orders, offer special bulk discounts you cannot get from the website. Please get in touch today to discuss your needs.
Dritherm by Knauf Insulation - Cavity wall Insulation
Knauf DriTherm Cavity Slab 37 is a rigid to semi-rigid glass mineral wool slab, designed for use in external full-fill masonry cavity walls. It has a low thermal conductivity which helps the cavity batt insulation give an excellent thermal performance They provide exceptional cavity wall insulation even in structures up to 12 metres tall in any exposure zone, as well as multi-story applications up to 25 metres tall.
Knauf DriTherm Cavity Slab has the highest possible fire classification. They are rated A+ by Euroclass, which means the cavity batt insulation is non-combustible. Dritherm37 slabs are designed to easily fit between wall ties without the need for retaining discs. They can also be ‘knit’ together to eliminate air gaps between adjacent slabs, thus ensuring effective thermal insulation.
Knauf Insulations use a unique bio-binder-based technology called ECOSE® Technology to make the glass mineral wool insulation more people and environment-friendly. The manufacturing process of fibreglass insulation uses about 70% less energy when manufactured using Ecose Technology. It does not contain any added formaldehyde or phenol. Without the added formaldehyde, the cavity wall insulation generates very low levels of dust, which makes it easy to handle the product. Ecose technology makes the insulation soft to touch and increases the comfort for those handling it.
Product Specification:
- Length: 1200mm
- Width: 455mm
- Thickness Available: 50mm, 75mm, 85mm, 100mm, 125mm, 150mm
|
Thickness |
Slabs per pack |
Coverage Area/pack (m2) |
|
50mm |
12 |
6.55 |
|
75mm |
8 |
4.37 |
|
85mm |
8 |
4.37 |
|
100mm |
12 |
6.55 |
|
125mm |
6 |
3.28 |
|
150mm |
8 |
4.36 |
Key Features:
- Knauf Dritherm 37 is a non-combustible product. They are rated A1 according to Euroclass
- Dritherm 37 cavity slabs offer exceptional thermal performance.
- Cavity wall insulation slabs pose no threat to the environment.
- They are water repellent, odourless and non-hygroscopic products.
- Cavity wall insulation is water-repellant. The special ingredient used during the manufacturing process ensures this.
- Made with ECOSE Technology which means the product is soft to touch, has lower dust levels, Low VOCs, and is environment friendly.
- Easy to handle and install, lightweight, easy to cut.
- Cavity slabs completely fill the cavity to avoid mortar snots and bridges.
- Slabs are proportioned to fit between wall ties without retaining discs
- British Board of Agrément certified for use in all exposure zones
- 455mm wide cavity slabs of Knauf Insulation Dritherm 37 perfectly fit the standard tie spacings.
- The link to Knauf Insulation Dritherm 37 web page can be found here for more details.
Application:
- Earthwool DriTherm 37 Cavity Slabs offer excellent cavity wall insulation and are ideal thermal insulation of masonry cavity external walls and are installed to fully fill or partially fill the cavity.
- They are approved for use in buildings up to 12m high in any exposure zone and for use in multi-storey applications up to 25m in height.
Certifications:
- Manufactured in accordance with BS EN 13162.
- Conforms to BS 3533: 1981
- BBA certified - 95/3212, allowing it to be used in buildings up to 12 meters tall in any exposure zone, as well as multi-story applications up to 25 metres tall
- Knauf Insulation is one of the world's largest insulation manufacturers with exceptionally high standards.
- Cavity batt size: 1200mm x 455mm
- Dritherm 37 is BBA approved and specially designed for use in external full-fill masonry cavity walls.
- Made with fibreglass, cavity slabs are cost-effective, durable and easy to install.
- Low thermal conductivity helps with superior thermal performance.
- Non-combustible cavity wall insulation with the highest possible classification by Euroclass.
- Cavity batts are water-resistant. Will not transmit water to the inner leaf
| Insulation Type | Cavity Batts |
| Brand | Knauf |
| Material |
Fibreglass |
| Product Code | Dritherm 37 |
| Length | 1200 mm |
| Width | 455 mm |
| Thickness | 50mm, 75mm, 85mm, 100mm, 125mm, 150mm |
| Thermal Conductivity | 0.037 W/mK |
| Fire Classification | Euroclass A1 |
| Water Vapour Resistivity | 5.00MNs/g.m |
| Application | Cavity wall insulation |
| Delivery Terms | |
|---|---|
| Order Value (Excluding VAT) | Delivery Charge (Excluding VAT) |
| Above £1300 | Free Delivery |
| Orders below £1300 | £50 |
Returns/Refunds And Cancellations:
You can cancel your order and get a full refund before we confirm your order via email. Orders cancelled after the order confirmation email is sent, may attract a restocking fee.
Dritherm 37 cavity wall batts can be returned, provided they are in a resalable condition within 30 days from the date of receipt. Please contact us via email and we will assist you accordingly.
For more information on returns of faulty/damaged products and deliveries, please refer to our delivery information page.
You May Also Like
Customer Reviews
“ Stock was a problem when we ordered online, but they communicated it quickly. Went out of thier way ...”Henry B.
Verified Buyer
“ After searching many stores both local and online, we found this product for a good price with this ...”Isla M.
Verified Buyer
“ Dritherm 37 is good. As a contractor myself I have used it before for many projects. thanks very mu...”Aiden K.
Verified Buyer
“ It was just what I was looking for. good prices on a great product”Sam W.
Verified Buyer
“ Dritherm 37 does the job. there is no doubt about it. ”William G.
Verified Buyer
“ Good buy really. Fast delivery too ”Samuel L.
Verified Buyer
Our Customers Include
Frequently Asked Questions
Some frequently asked questions about Dritherm 37
Knauf Dritherm 37
You probably need cavity wall insulation if your home has cavities, which is much more likely if it was built after the 1920s
Cavity wall insulation can help save the loss of nearly 35% of energy from your home. Dritherm 37 is a cavity batt insulation exclusively made for insulating masonry cavity walls.
Knauf Dritherm 37 is a cavity slab insulation made from non-combustible glass mineral wool. It is designed for external masonry cavity walls and is suitable for buildings up to 12m high.
Dritherm 37 is also water-repellent. This cavity insulation is suitable for single and multi-story buildings. It's cheaper than DriTherm 32, so it is a popular choice for many commercial applications.
Here at Buy Insulation Online, we stock Dritherm 37 in thicknesses ranging from 50mm to 150mm.
Key Features of Knauf Dritherm 37:
Thermal Conductivity:
The Earthwool DriTherm 37 takes its name from its thermal performance. The cavity slabs are non-combustible, with a thermal conductivity value of 0.037 W/mK. Earthwool DriTherm 37 is less thermally efficient than Dritherm 32, but still meets the requirements for high-rise buildings.
The insulating properties of Dritherm 37 are enhanced as the fibres are knit-together by using Ecose technology.
Dritherm 37 is non-combustible:
Since Dritherm 37 is made with top-quality glass mineral wool or Fibreglass, it is non-combustible. Furthermore, it is rated as A1 by Euroclass standards, which is the highest possible rating achievable for any insulation material.
Dritherm 37 is easy to install:
Dritherm 37 cavity slabs are incredibly light, making them easy to install. They are also available in a variety of thicknesses. The lightweight, easy-to-cut slabs are supplied in a recyclable polythene pack.
Dritherm 37 for use in high-rise buildings:
Featuring a low thermal conductivity, it offers exceptional cavity wall insulation for buildings up to 12m tall.
Water-repellent nature of Dritherm 37:
Fibreglass cavity wall insulation slabs are water-repellant. Dritherm 37 repels water and hence does not allow the growth of moulds or fungi. It is odourless, non-hygroscopic and will not encourage vermin or the growth of bacteria.
Furthermore, Dritherm 37 does not cause dampness in cavity walls by itself. However, if you have pre-existing moisture problems in cavity walls, batt insulation will enhance this. So it is of utmost importance that you use Dritherm 37 after any pre-existing moisture-related issues in the cavity are resolved.
Dritherm 37 helps meet Building Regulations:
The most important point to note while choosing cavity wall insulation is that the material you choose needs to be BBA or CIGA-approved. These insulation materials are thoroughly tested and are proven to last longer, which means you will have tension-free cavity walls, provided there are no pre-existing issues in your cavity walls.
DriTherm 37 has a higher U-value than DriTherm 32, but it is not significantly more efficient. The difference between the two types of insulation is less than one kWh/m2 per annum in central England. This difference is not substantial enough to make the difference between the two types worthwhile.
Furthermore, Dritherm 37 is BBA-approved. They are proven to give consistent thermal performance over many years. With Dritherm 37 you are much more likely to have tension-free cavity walls.
Dritherm 37 is environmentally friendly:
Dritherm 37 is made with about 80% recycled glass and it does not contain any ozone-depleting or greenhouse gases.
Made with Ecose Technology:
Dritherm 37 is made with Knauf Insulations' unique bio-binder-based technology. All products made using this technology are made with nearly 80% recycled glass and other sustainably sourced materials.
Ecose technology is what makes Knauf Dritherm soft to touch, easy to work with and easier to install. These cavity batts do not release a lot of harmful fibres either. Knauf Dritherm helps improve air quality.
Knauf's Ecose Technology also help improve the thermal performance, fire ratings and soundproofing abilities of Dritherm 37. You can read more about Ecose technology here.
So, what makes Dritherm 37 unique?
Dritherm 37 is the only standard cavity batt insulation that is made by Knauf Insulations. Apart from its superior thermal efficiency, Knauf Dritherm 37 is BBA-approved, which means you can use it to insulate your cavity walls without second-guessing yourselves.
Besides, it is easier to install and work with as its made using Knauf’s Ecose technology. The glass fibres are tightly bound and cause little to no irritation during installation. However, proper PPE must be used when touching or installing Dritherm 37.
A Comparison Between Dritherm 32 and Dritherm 37
Dritherm 37 is a water-repellent and non-combustible glass mineral wool slab that is BBA-approved. However, it is not as thermally efficient as Dritherm 32. What are some benefits of Dritherm 37? Read on to learn about the differences between the two products.
Dritherm 37 is a non-combustible glass mineral wool slab
Dritherm 37 Glass Mineral Wool Slab is a highly durable, odourless and non-combustible material that is easy to install. It is suitable for a range of projects, from small-scale extensions to multi-storey applications. It has excellent thermal and acoustic properties. It is 75mm thick, making it easy to fit with standard vertical wall tie spacings.
Knauf Insulation‘s Dritherm 37 is a water-repellent glass mineral wool slab that is designed for external full-fill masonry cavity walls. It is non-combustible and offers exceptional thermal performance. In addition to its superior thermal properties, Dritherm 37 features a water repellent additive.
Dritherm 37 is an excellent cavity slab insulation material for single-storey and multi-storey buildings. It has an excellent thermal conductivity rating of 0.037 W/mK. This product is highly durable and odour-free, and it can be used in any exposure zone, including exposed coastal sites.
Dritherm 37 is a BBA approved thermal insulation material. It is made from 80% recycled glass and is ozone and greenhouse gas-free. It is made with a unique bio-binder technology, which is gentle to the touch and does not emit harmful fibres. Its low thermal conductivity means that it is suitable for use in external masonry cavity walls. This insulating material is BBA-approved, is cost-effective, and is environmentally-friendly. It also has a high Euroclass classification, making it a great choice for building insulation.
The Dritherm 37 is a highly-rated non-combustible glass mineral wool cavity slab from Knauf Insulation. It is a full-fill insulator, so it will not sag or droop over time. The material is also lightweight and easy to cut to size. In addition, it is supplied in a recyclable polythene pack, which makes it easy to install.
It is BBA-approved
The Knauf Dritherm 37 is a BBA-approved glass mineral wool slab that is suitable for external cavity walls. It has excellent thermal and acoustic performance. It is 80% recycled glass, and is odour-free. It is a cost-effective and durable option for a wide variety of projects. Its 75mm surface height is compatible with standard vertical wall ties, and it is easy to fit into a cavity.
BBA-approved Dritherm 37 offers consistent thermal performance over many years. It is made from 80% recycled glass, is free of greenhouse gases and ozone-depleting gases, and uses bio-binder and ecose technologies. It can be used in single-story and multi-story buildings and offers the highest Euroclass classification for fire and heat resistance.
The Dritherm 37 is made of top-grade fibreglass and glass mineral wool, and is Euroclass-rated A1. It is lightweight and is supplied in recyclable polythene packs. It offers outstanding thermal performance and low thermal conductivity, making it a highly versatile and cost-effective choice for cavity walls on buildings up to 12m high.
It is water-repellent
Knauf Dritherm 37 is a BBA approved, water-repellent, breathable, and highly resistant insulating material. It is made from 80% recycled glass and contains no ozone-depleting or greenhouse gases. Furthermore, this product uses Knauf Insulations’ unique ecose and bio-binder-based technology. In addition, this insulating material is extremely soft to touch and doesn’t release harmful fibres into the environment.
Made from high-grade fibreglass and glass mineral wool, Dritherm 37 is a lightweight, water-repellent material suitable for cavity insulation in single and multi-story buildings. It is also non-combustible, which makes it ideal for commercial applications. Additionally, it offers excellent thermal performance, which is important in high-rise buildings.
Knauf Dritherm 37 is a water-repellent, glass mineral wool insulation material that is perfect for masonry cavity walls. It is non-combustible and has been designed for use in buildings up to 25m tall. Its water-repellent qualities allow it to repel water, prevent evaporation, and provide superior thermal and acoustic performance.
It is less thermally efficient than Dritherm 32
While Dritherm 37 is less thermally efficient, it is still BBA-approved and suitable for cavity wall insulation in single and multi-story buildings. It has a thermal conductivity value of 0.037 W/mK and is water-repellent. As a result, it does not promote growth of mould and bacteria in cavity walls.
If you live in an area with high rainfall, you should consider the Knauf Earthwool slab. This full-fill insulator is lightweight and does not sag and droop over time. It also offers excellent soundproofing abilities.
