Cavity Wall Insulation

Dartmouth

Thinking About Installing Cavity Wall Insulation?

At Dartmoor Energy, we help homes across Devon and Cornwall stay warmer and more efficient with modern cavity wall insulation. Our trusted local installers, specialise in the installation of expanded polystyrene (EPS) bead insulation — one of the most effective and durable solutions on the market.

Why Choose Cavity Wall Insulation?

Most homes built between 1920 and 1990 were constructed with cavity walls — a gap between the inner and outer brickwork. Without insulation, these cavities can be responsible for up to 35% of your heat loss.

By filling that gap with EPS beads, you’ll:

✅ Save up to £300 per year on energy bills (Energy Saving Trust)
✅ Keep your home warmer in winter, cooler in summer
✅ Reduce your home’s carbon footprint
✅ Add value to your property

Why EPS Bead Insulation?

We use bonded EPS beads — small, lightweight polystyrene balls that flow freely into the cavity before being bonded in place with a water-based adhesive.

Benefits of EPS beads:

🔵 Excellent thermal performance (low lambda value)
🔵 No cold spots or voids — complete, even fill
🔵 Moisture resistant and breathable
🔵 Won’t degrade or slump over time
🔵 Fully BBA approved and meets all PAS 2030 standards

Why Dartmoor Energy?

We’re a local, independent energy company, based in the heart of the Southwest. With over a decade of experience in energy efficiency and retrofit, we’ve supported hundreds of homes through funded schemes and private work.