Keeping your home warm and comfortable starts from the ground up. If you’ve ever experienced cold floors and persistent draughts, it’s likely that poor floor insulation is to blame. In this guide, we’ll explore the best methods for insulating floors, the benefits of underfloor insulation, and how floor insulation boards can transform your home’s warmth and energy efficiency.
Why Floor Insulation Matters
Floor insulation plays a crucial role in preventing heat loss, reducing draughts, and making your home more energy efficient. A poorly insulated floor can account for up to 10% of heat loss, forcing your heating system to work harder and increasing your energy bills. Proper insulation keeps the heat where it belongs—inside your home.
Signs Your Floor Needs Insulation
If you’re unsure whether your home would benefit from floor insulation, watch out for these telltale signs:
- Cold spots on the floor – Certain areas of the floor feel noticeably colder.
- Draughts – Unwanted air currents coming from floor gaps.
- High energy bills – Increased heating costs due to heat loss through the floor.
- Mould and damp issues – Moisture problems caused by poor insulation.
- Noisy flooring – Wooden floorboards creaking due to gaps and lack of insulation.
Best Methods for Insulating Your Floor
1. Underfloor Insulation
Underfloor insulation is a game-changer for both suspended timber floors and solid floors. By insulating beneath the floor, you can prevent cold air from seeping through and significantly enhance thermal performance.
How to Insulate Suspended Floors
Suspended wooden floors have an air gap underneath, making them particularly prone to heat loss. The best way to insulate them is by installing insulation between the floor joists.
How to Insulate Solid Floors
For concrete or stone floors, insulation is added on top before installing a new surface.
2. Using Floor Insulation Boards
Floor insulation boards, such as PIR (polyisocyanurate) boards, are one of the most effective ways to improve thermal efficiency. These boards have a high R-value, meaning they provide excellent insulation while being lightweight and easy to install.
Benefits of PIR Insulation Boards:
- High thermal resistance, keeping floors warm.
- Easy to cut and fit between joists.
- Helps reduce sound transmission.
- Works well with underfloor heating systems.
3. Sealing Gaps and Cracks
Even if you’re not ready to install full underfloor insulation, sealing gaps in floorboards can make a noticeable difference.
Methods for Sealing Draughty Floors:
- Silicone sealant – Ideal for small gaps between floorboards.
- Expanding foam – Great for filling larger gaps around skirting boards.
- Draught-excluder strips – Self-adhesive strips that block air leaks.
4. Installing Rugs and Carpets for Extra Warmth
While not a substitute for proper insulation, thick rugs, and carpets can help trap heat and reduce draughts.
The Benefits of Floor Insulation
1. Lower Energy Bills
By preventing heat loss, floor insulation reduces the need for excessive heating, cutting down on energy consumption.
2. Improved Home Comfort
No more stepping onto freezing floors! Proper insulation maintains a consistent temperature throughout your home.
3. Enhanced Soundproofing
Insulation materials absorb sound, reducing noise from foot traffic and improving acoustic comfort.
4. Increased Property Value
Energy-efficient homes with proper insulation are more attractive to buyers and can command higher prices.
5. Better Indoor Air Quality
Proper insulation reduces the chances of moisture buildup, which helps prevent mould and mildew growth, improving air quality.
Choosing the Right Floor Insulation
The best insulation material depends on your floor type and budget. Here’s a quick comparison:
| Insulation Type | Best For | Key Benefits |
| PIR Insulation Boards | Suspended & solid floors | High thermal efficiency, rigid and durable |
| Mineral Wool | Suspended wooden floors | Flexible, soundproofing properties |
| Foil Insulation | Suspended wooden floors | Reflects heat, easy to install |
| Polystyrene Boards | Solid floors | Lightweight, moisture resistant |
| Spray Foam | Hard-to-reach areas | Expands to fill gaps, airtight seal |
When to Hire a Professional
- If the job involves lifting large floor areas.
- When working with complex materials like spray foam.
- If moisture control and ventilation need assessment.
For expert guidance and maximum efficiency, consider Tamburah. With over 20 years of experience and a strong reputation for high-quality floor insulation solutions, we offer expert installation, SEAI grant support, and long-term energy savings. Our premium insulation services help homeowners slash energy bills while enhancing comfort and efficiency. Get in touch with Tamburah today to explore tailored insulation options for your home.
Additional Insulation Tips
- Check for dampness first – Insulating over damp floors can trap moisture, leading to bigger issues.
- Combine insulation with underfloor heating – Maximises efficiency and comfort.
- Don’t forget ventilation – Proper airflow prevents condensation and mould.
- Use sustainable materials – Options like sheep’s wool and recycled insulation boards are eco-friendly.
Conclusion
Floor insulation is one of the most effective ways to enhance warmth, reduce draughts, and improve energy efficiency. Whether you opt for underfloor insulation, floor insulation boards, or simple draught-proofing measures, investing in proper insulation will transform your home’s comfort and help you save on heating bills.
Ready to say goodbye to cold floors? Start insulating today!