Applicable Regulations
Method Statement — Sequence of Work
- Review this RAMS and confirm site conditions match those described before work begins.
- Brief all operatives on the hazards, controls and PPE requirements below (toolbox talk).
- Check and don all required PPE, and inspect tools and equipment before use.
- Carry out the task in line with the control measures set out in the Hazard & Risk Assessment section below.
- Maintain good housekeeping throughout — keep the work area tidy and manage waste and materials safely.
- On completion, remove tools and equipment, restore the work area, and report any incidents, near misses or changes in site conditions to the site supervisor.
- Complete the sign-off section at the end of this document before leaving site.
Hazard & Risk Assessment
Each hazard is assessed against a standard Likelihood × Severity matrix. “Initial Risk” reflects the risk before any control measures are applied; “Residual Risk” reflects the risk once the stated controls are correctly implemented on site.
Exposure to Isocyanate Vapours During Spraying
Control: Use powered RPE (not just a filtering mask) rated for isocyanate exposure, and ensure the space is sealed off and ventilated for the manufacturer's specified re-entry period after spraying.
Fire Risk from Spray Foam Application
Control: Follow the manufacturer's application guidance on layer thickness and curing time, keeping ignition sources clear of the work area.
Working in Confined Loft Spaces
Control: Use crawl boards across joists and keep a second person aware of the work location throughout the application.
Concealing Timber Defects & Ventilation Paths
Control: Inspect roof timbers for existing defects and maintain required roof ventilation paths before spraying, in line with current insulation guidance on spray foam risks.
Equipment & Spray Gun Handling
Control: Check spray equipment, hoses and gun for damage before use, and follow the manufacturer's mixing ratios and pressure settings.
Required PPE
Emergency Procedures
Fire
Stop work immediately, raise the alarm and evacuate to the designated assembly point. Do not attempt to fight a fire beyond your training. Call 999 once safely evacuated if the fire brigade has not already been alerted.
First Aid / Injury
Stop work and alert the nearest first aider or site supervisor. For a serious injury, call 999 immediately and do not move a casualty unless there is immediate danger.
Spillage / Environmental Incident
Stop work, contain the spill using the site's spill kit if safe to do so, and report it to the site supervisor immediately. Do not allow any spillage to enter a drain or watercourse.
Frequently Asked Questions
Does this RAMS cover the isocyanate exposure risk from spray foam application?
Yes. It includes a control requiring powered RPE rated for isocyanate exposure and a sealed, ventilated re-entry period after spraying, reflecting HSE guidance on spray foam risks.
Do I need to keep a copy of this RAMS on site?
Yes. HSE guidance expects a copy of the RAMS — along with the completed sign-off section — to be available on site for the duration of the work, and reviewed if site conditions change.