How and where to use guide
EARTHWOOL GLASS MINERAL WOOL DRITHERM 32 ULTIMATE 1200 X 455 X 100mm (6) - 3.28mtr sq
Typical applications
Dritherm 32 Ultimate is primarily used as cavity wall insulation in residential and light commercial construction. It is suitable for masonry cavity walls with standard cavity widths and works effectively in both new build and retrofit scenarios. The product can also be used in timber frame cavity applications where cavity width permits.
- New build cavity wall insulation
- Renovation and retrofit projects
- Masonry cavity walls
- Timber frame construction
- Acoustic improvement in external walls
Installation and handling
Dritherm 32 Ultimate batts are designed for straightforward installation between cavity wall studs or ties. The product should be handled carefully to avoid compression, as this reduces thermal performance. Ensure the cavity is clear of debris and mortar droppings before installation. Position batts to fit snugly without excessive force, maintaining their full thickness. Always wear appropriate personal protective equipment including gloves, dust mask, and eye protection when handling mineral wool. Ensure adequate ventilation during installation.
- Wear gloves, mask, and eye protection during handling
- Install batts without compression to maintain performance
- Clear cavity of debris and mortar before fitting
- Position batts to fill cavity width completely
- Maintain adequate site ventilation
- Store in dry conditions prior to installation
Performance and limitations
This product achieves a thermal conductivity of 0.032 W/mK, providing excellent insulation value for standard cavity applications. The 100mm thickness is suitable for typical cavity widths. Dritherm 32 Ultimate will not perform effectively if compressed or if the cavity contains moisture. The product is not suitable for cavities narrower than the batt width or for applications requiring fire-rated performance beyond standard building regulations. Performance depends on correct installation without gaps or voids.
- Thermal conductivity: 0.032 W/mK
- Thickness: 100mm
- Not suitable for compressed installation
- Requires dry cavity conditions
- Performance reduced if gaps or voids remain
- Check cavity width compatibility before ordering
On-site tips and maintenance
Plan material delivery to avoid prolonged storage on site, as mineral wool should remain dry. Protect batts from weather and moisture before installation. Once installed within the cavity, the product requires no ongoing maintenance. Ensure cavity ventilation is not obstructed by insulation, as this can lead to moisture issues. If the building is to remain unfinished for extended periods, consider temporary weather protection to prevent water ingress into the cavity.
- Deliver materials close to installation date
- Keep batts dry and protected from weather
- Do not obstruct cavity ventilation paths
- Protect unfinished cavities from water ingress
- Check local building regulations for cavity insulation requirements
- Maintain clear access for installation teams