When winter sets in, most homeowners focus on boilers, insulation, or double-glazing to keep heating bills down. But one of the simplest and most effective ways to stay warm is often overlooked: your curtains.

At Sue Cardy Curtains, Blinds and Soft Furnishings in Northampton, we help homeowners choose curtains that aren’t just beautiful—they’re designed to retain heat, block draughts, and make your home feel warmer all winter long.

How Curtains Help Reduce Heat Loss

Windows are a major source of heat loss. Heat escapes through the glass, around frames, and from warm rooms to cold surfaces. Curtains act as an extra layer of protection.

When closed, they trap a layer of air between the fabric and the window. This trapped air acts as insulation, slowing heat from escaping. Heavier fabrics or specially lined curtains boost this effect, turning your window dressings into a practical energy-saving feature.

This is particularly important in:

  • Older homes with single glazing

  • Rooms with bay or large windows

  • Spaces prone to draughts

Choosing Curtains That Actually Keep You Warm

Not all curtains are created equal. Lightweight, unlined curtains offer little in terms of insulation. For maximum warmth and energy efficiency, look for:

  • Thermal or interlined linings

  • Dense, tightly woven fabrics

  • Full window and wall coverage

  • A snug fit at the sides and bottom

Thermal curtains are designed with these features in mind, helping to reduce cold spots and draughts around windows.

Why Fit Matters as Much as Fabric

Even the best thermal curtain won’t work if it doesn’t fit properly. Gaps at the sides or bottom allow warm air to escape. Made-to-measure curtains are ideal for Northampton homes because they:

  • Fully cover the window area

  • Reduce air movement around the edges

  • Improve both insulation and appearance

Floor-length curtains that extend slightly beyond the window frame deliver the best results, especially in living rooms and bedrooms.

Maximising Curtain Efficiency

To get the most from your curtains during winter:

  • Open them during daylight to let natural warmth in

  • Close them as soon as it gets dark

  • Keep them fully closed overnight

This simple routine can noticeably improve comfort and reduce reliance on central heating.

An Easy Upgrade with Big Benefits

Curtains may seem like a small detail, but the right ones can make a real difference to your home’s warmth. With the right fabric, lining, and fit, they help:

  • Retain heat

  • Reduce draughts

  • Make rooms feel cosier

At Sue Cardy Curtains, Blinds and Soft Furnishings, we specialise in energy-efficient, stylish curtains tailored to your Northampton home. Make your living spaces warmer this winter—without increasing your heating bills.