How to Keep a Garden Dome Cool in Summer

Start with ventilation: it's already built in

Heat management begins with airflow, and every GeoDomeX dome includes the means: roof vents, windows and a solid sliding door.

• Open the roof vents. Hot air rises, and the included roof vents let the hottest air escape. This alone makes a big difference.
• Create a through-draught. Open the sliding door and the windows so air can flow right through the dome, pulling cooler air in and pushing hot air out. Cross-ventilation is the single most effective cooling move.
• Vent in the cool hours. Open everything up in the early morning and evening to flush out warm air and bring the temperature down.

Good airflow does most of the work; everything else is fine-tuning. Our ventilation guide goes into more detail.

Add shading

The panels are UV-protected, but like any clear material they let the sun's warmth through, so cutting direct sun before it enters is the next lever:

• Sunshade privacy panels. Our sunshade privacy panels are individual panels for the back and both sides of the dome, fitted panel by panel where the sun hits, so you control light and heat through the day and keep the view where you want it. They come in four colours (Slate Grey, Leaf Green, Midnight Blue and Sand Beige) and cost £199 for the Mini, £249 for the Standard and £699 for the Large. Our privacy and shading guide covers the options in detail.
• A shade sail or parasol positioned over or beside the dome takes the edge off peak sun without darkening the interior.
• Natural shade from a nearby tree or planting helps if you're siting the dome from scratch: dappled afternoon shade is ideal.

Position it cleverly

If you haven't placed the dome yet, siting matters. A spot that catches glorious morning sun but gets some shade in the fierce afternoon gives you the best of both: bright and cheerful early, cooler later. Think about where the summer sun sits in your garden before you decide.

A few easy extras

• A fan. A floor or pedestal fan keeps air moving and the space comfortable for very little. If you want mains power in the dome, have a registered electrician install an outdoor supply with RCD protection and outdoor-rated fittings (in England and Wales this comes under Part P); a rechargeable fan does the job in the meantime.
• Soft furnishings off in peak heat. Keep it airy, and pile the throws back on for cooler evenings.
• Plants. Greenery inside and around the dome adds shade and a cooler feel.
• Get ahead of the heat. Manage it like any sunroom: have the shading in place and the vents open before the afternoon sun peaks, because it's easier to keep a dome cool than to cool it down once it's hot.

The reassuring part

Because ventilation is designed in, with roof vents, windows and a sliding door all included, you're not retrofitting a solution; you're using the dome as intended. Manage the airflow and shade as the day heats up, exactly as you would a conservatory or sunroom, and the dome stays a lovely place to be right through summer, not just in spring and autumn.

Frequently asked questions