Keeping Your Marquee Comfortable, Whatever the Season
As summer turns to autumn, one question comes up more than almost any other: “Won’t a marquee be too cold for my guests?”
It’s a reasonable concern, but one that can be solved with the right planning. Last November, we heated a marquee for a 60th birthday party in Surrey when the temperature was forecast to drop to 4°C overnight. Guests spent the evening in their shirt sleeves, barely aware of how cold it was outside.
At Project Marquee, we provide heated marquee hire throughout the year across Surrey, South West London and Middlesex, whether you’re planning a golden anniversary lunch, a family Christmas gathering or a corporate party for staff and clients who would rather not keep their coats on all evening.
It’s not only an autumn and winter consideration, either. Even after a warm summer day, the temperature inside a marquee can fall surprisingly quickly once the sun goes down. Guests dressed for an afternoon wedding may start to feel the chill by the time the evening reception gets going.
The answer is to plan for comfort from the outset. Heating, insulation, ventilation and layout all work best when considered together, creating a marquee that feels welcoming from the moment guests arrive until the last ones leave.
Why Marquee Comfort Needs to Be Planned Early
The amount of heating required depends on more than the time of year. We also look at the size of the marquee, the number of guests, the flooring, the expected weather and how often entrances are likely to be opened.
The event itself matters too. A seated lunch for 40 guests has different requirements from a party for several hundred people moving between the marquee and an outside area. The position of doors, tables, bars and dance floors can all influence how heat moves around the space.
Considering these details early lets us recommend a heating system suited to the event, rather than simply adding a heater as an afterthought.
How Marquee Heating Works
During the colder months, we normally use an indirect warm-air heating system. The heater stays outside the marquee, with warm air ducted into the space through a diffuser.
Keeping the equipment outside means there’s no heater taking up valuable floor space among your guests and no fuel being stored or burned within the marquee. It also allows warm air to be distributed effectively without bulky heating units disrupting the interior.
The system is controlled by a thermostat, helping it maintain a steady, comfortable temperature without someone having to adjust it continually throughout the event. It can be scaled to suit anything from an intimate marquee for 40 people to a large celebration or corporate event with several hundred guests.
More Than a Heater: Preparing a Marquee for Cold Weather
Keeping a winter marquee comfortable involves more than producing enough warm air. Retaining that warmth is just as important.
For events during colder weather, our Clearspan marquees can be prepared with heavy-duty, weather-sealed walling and insulation beneath the flooring. The structure is securely anchored, with the installation planned around the site and the weather conditions expected at the time of the event.
When the marquee and heating system are correctly specified, these measures can typically help maintain a comfortable internal temperature of around 18–20°C, even when it’s cold outside.
We can also pre-warm the marquee before guests arrive. Instead of walking into a cold space and waiting for it to heat up, they step into a dry, comfortable environment that’s ready for the event to begin. The thermostat then helps maintain the selected temperature as conditions change during the day or evening.
The basic Clearspan structure stays the same throughout the year, but a winter installation places greater emphasis on heat retention, ground insulation, weather sealing and preparation for the expected conditions.
What About Spring and Summer Events?
British weather rarely follows a reliable timetable, so heating is often still worth considering for spring and summer events too.
A sunny afternoon can turn into a cool evening, particularly in an open location or when an event runs late into the night. Depending on the date, forecast and type of occasion, we may recommend having suitable heating available so a drop in temperature doesn’t send guests home earlier than planned.
Comfort in warm weather calls for a different approach. When conditions allow, marquee wall sections can be opened to improve airflow and help guests stay comfortable during the day, then closed again as the temperature falls later in the evening.
This flexibility is one of the advantages of a properly planned marquee – it can respond to changing conditions throughout the event, rather than relying on the weather sticking to the forecast.
Keeping Guests Comfortable Throughout the Event
A few practical decisions can make a noticeable difference:
- Pre-warming the marquee before guests arrive
- Positioning entrances to reduce unnecessary heat loss
- Allowing for doors that will be used frequently
- Placing tables and seating so guests aren’t directly beside warm-air outlets
- Using thermostatic control to maintain a comfortable temperature as conditions change
- Planning for the transition from a warm afternoon to a cooler evening
Heating, flooring, entrances and the internal layout should be planned as parts of the same overall setup, not addressed one at a time.
A Comfortable Marquee in Every Season
A marquee shouldn’t feel like an outdoor space that guests have to dress to endure. With the right heating, insulation and preparation, it can provide a warm, dry and welcoming setting during autumn and winter, while staying flexible enough for changeable spring and summer weather.
At Project Marquee, we plan the whole environment around your event, taking account of the date, venue, guest numbers and likely conditions. This allows us to recommend a marquee and heating arrangement that keeps everyone comfortable without compromising the space or appearance you want.