Description
Natural Cork for Cavity Wall Insulation: Sustainable Thermal and Acoustic Insulation
Enhance comfort with Natural Cork for Cavity Wall Insulation, a granulated 100% natural cork product designed for filling hollow cavities. With a low thermal conductivity of 0.050 W/m·K, it provides excellent thermal and acoustic insulation, reduces room-to-room noise, prevents condensation, and addresses mold and mildew issues, making it ideal for energy-efficient interior upgrades.
Key Features
- Thermal Insulation: Thermal conductivity of 0.050 W/m·K minimizes heat and cold losses.
- Acoustic Insulation: Significantly reduces noise transfer between rooms, enhancing acoustic comfort.
- 100% Natural: Elastic, chemically inert, and breathable, with minimal water absorption (<0.3%) to prevent condensation.
- Durable: Long-lasting, with no linear expansion or contraction, and resistant to degradation over time.
- Easy Application: Blown in using a Suberlev spray gun or industrial machinery, minimizing dust and speeding up installation.
- Fire Safety: Hardly flammable, starts to burn at 121.11°C, and emits no toxic fumes.
Why Choose Natural Cork for Cavity Wall Insulation?
Natural Cork for Cavity Wall Insulation is the sustainable choice for thermal and acoustic insulation projects, particularly in energy retrofitting. Its 0.4-2 mm granulometry and high density of 300 kg/m³ ensure efficient cavity filling, creating a continuous insulation barrier without thermal bridges. The lightweight, elastic, and eco-friendly nature of cork, combined with its quick and clean application, makes it perfect for partitions and false ceilings, improving indoor air quality and comfort.
Application Guidelines
- Inspection and Measurement: Inspect the cavity and calculate its volume in liters, adding 10-15% extra product for compaction.
- Drilling Holes: Drill holes in the middle and upper part of the partition, spaced 0.8 m apart, using a bit equal to or larger than the spray gun nozzle. Cap holes with sponges to allow air escape while retaining the product, reducing dust.
- Insulation Blowing: Start at the bottom hole, using an air compressor (minimum 200 L/min) with a Suberlev gravity spray gun with hopper or high-performance industrial machinery. Switch holes as the cavity fills, continuing until complete.
- Compaction: Lightly compact the lower areas with a rubber mallet to ensure uniform filling.
- Sealing: Fill drilled holes with putty or suitable materials.
Technical Specifications
| Property | Value | Standard |
|---|---|---|
| Texture | Granulated | – |
| Granulometry | 0.4-2 mm | – |
| Density | 300 kg/m³ | – |
| Thermal Conductivity | 0.050 W/m·K | EN 12667 |
| Water Absorption by Volume | <0.3% | – |
| Expansion and Linear Contraction | <0.3% | – |
| Fire Resistance | Hardly flammable, burns at 121.11°C, no toxic fumes | – |
Storage and Precautions
Store in a cool, dry place, protected from moisture to prevent clumping, with a shelf life of up to 1 year in original sealed packaging. Keep out of reach of children. Wear protective clothing, gloves, and eye/face protection during handling to avoid respiratory irritation from dust. Ensure the cavity is hermetically sealed to prevent material escape. No special handling precautions are required. Available in 60 L sacks (1 pallet = 30 sacks = 1.8 m³).
Ideal For
- Filling hollow cavities in partitions and false ceilings
- Reducing noise between rooms
- Preventing condensation in interiors
- Energy retrofitting of interiors with mold or mildew issues
- Sustainable projects using natural materials
Certified Quality
Tested to EN 12667 standards, with CE marking for optimal performance
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