Best Ways to Keep Your Conservatory Warm During Winter

Ibrahim Kalay - Mar 20, 2025

A conservatory can be a beautiful space to relax, but when winter arrives, it often becomes uncomfortably cold. Instead of abandoning it until spring, you can take several steps to keep the warmth inside and create a cozy atmosphere. With proper insulation, heating solutions, and a few smart tricks, you can enjoy your conservatory all year round.

1. Improve Insulation to Prevent Heat Loss

One of the main reasons conservatories get so cold in winter is poor insulation. Glass panels allow heat to escape quickly, making the space feel chilly. Here’s how you can improve insulation:

Upgrade to double or triple glazing: If your conservatory still has single glazing, upgrading will significantly reduce heat loss.
Use thermal blinds or thick curtains: Covering windows at night helps retain warmth.
Apply heat-reflective film on glass: This reduces heat escape while still allowing sunlight to enter.
Seal gaps around windows and doors: Weather stripping or sealant can block cold drafts.

2. Insulate the Floor for Extra Warmth

Cold air rises from the floor, especially if your conservatory has tiles or stone flooring. Without proper insulation, the space will always feel cold.

Place a thick rug or carpet to add insulation.
Use thermal underlays beneath rugs for extra warmth.
If possible, consider installing underfloor heating, which distributes heat evenly and makes the room much cozier.

3. Choose the Right Heating System

While a portable heater can provide quick warmth, a long-term heating solution will make a significant difference. Depending on your budget and preferences, you can opt for:

Electric radiators: Efficient and easy to install. (Look rointe radaitors)
Infrared heaters: Heat people and objects rather than the air, making them energy-efficient.
Wall-mounted or ceiling heating panels : Great space-saving option.
Wood-burning stove or bioethanol fireplace : Adds both warmth and ambiance.

4. Block Cold Air and Reduce Draughts

Even small gaps can let in cold air, quickly lowering the temperature. To prevent this:

Install draught excluders under doors.
Apply insulation strips around window frames.
Use thermal curtains over doors leading outside.

5. Upgrade the Roof for Better Heat Retention

The roof is another major area where heat escapes. Traditional polycarbonate roofs lack proper insulation, so consider these options:

Install insulated roof panels: These help retain heat while still allowing natural light.
Use thermal inserts: These sit between roof panels and act as an extra layer of insulation.
Upgrade to a solid tiled roof: More expensive but offers the best insulation.

6. Create a Cozy Atmosphere with Soft Furnishings

Adding warm, soft materials to your conservatory can make it feel much cozier:

Thick blankets and cushions absorb warmth and make seating areas inviting.
Fabric wall hangings help reduce cold drafts and create a snug atmosphere.
A cozy rug not only insulates the floor but also adds a warm, homely touch.

7. Reduce Dampness with a Dehumidifier

Cold and damp air makes a space feel even chillier. Using a dehumidifier can remove excess moisture and improve warmth retention. Keeping condensation under control also prevents mold and damp problems, making your conservatory more comfortable in winter.

8. Maximize Natural Heat from the Sun

Take advantage of any available sunlight to keep the conservatory warm:

Open blinds and curtains during the day to let the suns natural warmth heat the room.
Use dark-colored rugs or furniture to absorb and retain heat.
Arrange seating near sunlit areas to make the most of the warmth.

Enjoy a Warm Conservatory All Winter Long

By combining these insulation techniques, heating solutions, and simple decor tricks, you can transform your conservatory into a cozy retreat even during the coldest months. No more avoiding the space until spring just a warm, inviting area to relax and enjoy, no matter the season!

Frequently Asked Questions About Keeping a Conservatory Warm in Winter

How to keep your conservatory warm in the winter DIY?

If you’re looking for DIY solutions to keep your conservatory warm, focus on insulation and heat retention. Start by sealing any gaps around windows and doors with weather stripping or sealant to block cold drafts. Adding thick rugs or thermal underlays to the floor helps reduce heat loss from below. You can also hang thermal curtains or blinds to keep the warmth inside. For extra heat retention, consider applying heat-reflective window film or installing temporary insulated roof panels. If you need additional warmth, a budget-friendly option is to use an electric heater with a timer to maintain a steady temperature.

What is the cheapest way to heat a conservatory in winter?

The most cost-effective way to heat a conservatory is by trapping heat rather than constantly generating it. Insulating windows with thermal blinds, sealing draughts, and adding thick rugs can help maintain warmth without additional energy costs. If heating is necessary, opt for an oil-filled electric radiator or infrared panel heater, as they are energy-efficient and provide steady warmth without using too much electricity. A small fan heater with a thermostat can also be a low-cost option for short bursts of heat.

How to make a conservatory warmer in winter and cooler in summer?

Balancing temperature throughout the year requires proper insulation and ventilation control. In winter, use thermal blinds, insulated roof panels, and draught-proofing to keep the heat inside. In summer, prevent overheating by installing reflective roof panels, UV window films, or solar blinds to block excessive sunlight. Ventilation is key in warmer months opening windows or using an extractor fan can help maintain airflow. A tiled or insulated roof conversion is the most effective long-term solution for maintaining a stable temperature year-round.

Do clip-in insulated panels work for conservatories?

Yes, clip in insulated panels are a great way to improve heat retention in winter and reduce excessive heat in summer. These panels are designed to fit between existing roof panels, adding an extra layer of insulation without major structural changes. They help to regulate temperature and improve energy efficiency, making them a practical and affordable solution. Many homeowners find them useful for converting a conservatory into a comfortable year-round space.

How to make a conservatory warmer?

To make your conservatory feel warmer, start with proper insulation use thermal curtains, heavy rugs and draught excluders to reduce heat loss. Adding an energy-efficient heater, such as an infrared panel or an oil-filled radiator, helps maintain warmth without high energy costs. Consider placing heat-reflective foil behind radiators to maximize heat efficiency. If possible, upgrade to double-glazed or triple-glazed windows and install insulated roof panels for long-term warmth.

How to make a conservatory warmer DIY?

For a DIY approach, focus on quick and cost effective insulation methods. Install weather stripping around windows and doors to block cold air, lay thick rugs or carpets on the floor to reduce heat loss, and use bubble wrap or window insulation film to add a thermal layer to glass surfaces. Reflective foil insulation placed behind radiators can also help redirect heat back into the room. If you have the time and skills, consider adding clip in insulated roof panels for a more effective temperature solution.

What is the cheapest way to heat a conservatory in the UK?

In the UK, where energy costs can be high, the cheapest way to heat a conservatory is by maximizing insulation first before using heating devices. Thermal curtains, draught proofing, and thick rugs can help retain warmth. If heating is needed, an oil filled radiator or electric radiator with a thermostat is an affordable and efficient choice. Infrared panel heaters are another low-cost option, as they heat objects rather than the air, making them more energy efficient. Avoid leaving heaters on constantly; instead, use a timer or thermostat controlled system to regulate the temperature.

By using a combination of these strategies, you can keep your conservatory warm in winter without spending a fortune on heating bills!