How and where to use guide
EARTHWOOL GLASS MINERAL WOOL DRITHERM 32 ULTIMATE 1200 X 455 X 125mm (4) - 2.184mtr sq
Typical applications
Dritherm 32 Ultimate is primarily used for insulating cavity walls in new build construction and renovation projects. It is designed to fit standard cavity widths and works effectively in both external and internal leaf applications. The product is suitable for residential properties, including houses, bungalows, and apartments, as well as light commercial buildings where thermal performance and ease of installation are priorities.
- New build cavity wall insulation
- Renovation and retrofit projects
- Standard cavity widths in masonry construction
- Residential and light commercial applications
Installation and usage
The rigid batts should be carefully inserted into the cavity between the inner and outer leaves of the wall, ensuring they are fully supported and level. Each batt measures 1200 x 455 x 125mm and should be positioned to avoid gaps or compression, which would reduce thermal performance. Work systematically from bottom to top, ensuring batts are pushed firmly into place without excessive force that might damage the material. The product must be installed during wall construction before the inner leaf is completed. Always follow building regulations and the manufacturer's installation instructions for your specific cavity width and wall construction type.
- Insert batts into cavity between wall leaves during construction
- Ensure full support and level positioning
- Avoid gaps, compression, or bridging across the cavity
- Install from bottom to top in systematic rows
- Check local building regulations and cavity width requirements
Limitations and site considerations
This product is designed specifically for cavity wall applications and should not be used in other locations such as lofts, floors, or solid wall applications without appropriate modification. The 125mm thickness is fixed and must match your cavity width; using oversized or undersized batts will compromise performance. The material must be kept dry during storage and installation, as moisture absorption will significantly reduce thermal effectiveness. Dritherm 32 Ultimate should not be exposed to direct weather or left uncovered on site for extended periods. Ensure adequate ventilation of the cavity is maintained where required by building regulations.
- Designed for cavity walls only; not suitable for other applications
- Thickness must match cavity width for optimal performance
- Protect from moisture during storage and installation
- Do not expose to weather or leave uncovered long-term
- Maintain cavity ventilation as required by building regulations
Maintenance and on-site tips
Once installed and the wall is completed, Dritherm 32 Ultimate requires no ongoing maintenance. The product is inert and will not settle, degrade, or require replacement during the building's lifetime under normal conditions. On site, store batts in a dry location away from rain and ground moisture. Handle carefully to avoid crushing or compressing the material before installation. Ensure you have the correct cavity width measured before ordering, as the 125mm thickness is fixed. Each pack contains four batts covering 2.184 square metres, so calculate your wall area accurately to determine the number of packs required. Wear appropriate personal protective equipment, including gloves and a dust mask, when handling mineral wool.
- No maintenance required after installation
- Store in dry conditions away from moisture
- Handle carefully to prevent compression before use
- Verify cavity width before ordering
- Wear gloves and dust mask during handling