Sub Floor Insulation – What You Need To Know 🌡️ Instant Warmth: Significantly improves the warmth of the floor and the overall house, with noticeable effects on the same day. 🔧 Simple Installation Options: Techniques include using rock wool held with netting, tacking strapping with a stapler, or feeding insulation through removed floorboards. 🌬️ Ventilation Considerations: Concerns about moisture retention are mitigated by maintaining proper underfloor ventilation. 💰 Long-Term Savings: Insul