When insulating stud walls in commercial buildings — whether office partitions, timber frame new builds or steel frame infill — the choice of insulation material has a significant impact on thermal performance, acoustic performance, airtightness and long-term reliability.
Spray Foam vs Rockwool vs PIR Board
| Feature | Spray Foam | Rockwool Batts | PIR Board |
|---|---|---|---|
| Fills cavity completely? | Yes — expands to fill | Gaps around services | Must be cut precisely |
| Airtightness | Excellent — seamless | Poor — gaps at edges | Moderate — joints need taping |
| Settles over time? | No | Yes — sags and compresses | No |
| Acoustic performance | Good (open cell: excellent) | Good | Poor |
| Installation speed | Fast — same day | Slow — manual fitting | Moderate |
| Works around services? | Yes — fills around pipes/cables | Must be cut around | Must be cut around |
For commercial stud wall projects, Duratite recommends Sucraseal open-cell spray foam for acoustic partitions and Nexseal LE closed-cell for external walls requiring a vapour barrier. Read our full commercial stud wall insulation guide or call 01208 832602.
20yr
Manufacturer-backed product warranty
1day
Typical site-survey response, UK-wide
B
Euroclass B fire rating (BS EN 13501-1) — DC315 + Nexseal LE
UK
Approved-installer network across England, Scotland, Wales & NI
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UK-wide coverage. Typical response within one working day.