How to stop condensation in a roof tent

Battling condensation: How to keep your roof tent comfortably dry.

Roof tents have elevated the camping experience to new heights, quite literally. However, along with the breathtaking views and cosy sleeping arrangements, roof tent campers might encounter a common challenge: condensation. In this article, we delve into effective strategies to tackle condensation in your roof tent, ensuring a comfortable and dry camping adventure.


Understanding Condensation

Condensation occurs when warm air inside the tent comes into contact with a colder surface, such as the tent’s walls or roof. This results in the conversion of moisture vapour into water droplets, which can accumulate and create a damp environment inside your tent.

One person can exhale up to 1 litre of water overnight, and this water vapour converts to liquid when it meets the colder walls of your roof tent. Furthermore, if there are multiple people sleeping, the amount of water in the air increases and condensation can be mistaken for a leak.

Consequently, all Tent & Trail roof tents are made with top-quality breathable waterproof fabric, and have a waterproof sealant tape applied behind all the seams for added waterproofing protection. All our roof tents feature 2 x internal vents for air circulation and an anti-condensation layer under the mattress, for no extra cost.

While condensation is a natural process, minimising its effects can enhance your camping experience.

Condensation buildup on tent fabric with trees blurs in the background.

Best ways to prevent roof tent condensation

1 – Prioritise proper ventilation 

Ample ventilation is your first line of defence against condensation. Ensure your roof tent has windows, vents, or mesh panels that can be adjusted to allow for adequate airflow. By keeping these openings slightly open, you create a pathway for moisture-laden air to escape, reducing the chances of condensation buildup.

2 – Location matters

Selecting the right campsite can make a significant difference. Avoid areas prone to moisture accumulation, such as valleys or spots near bodies of water. Choose well-ventilated locations that promote natural airflow around your tent.

3 – Choose breathable material

When selecting a roof tent, opt for those made from breathable fabrics, such as polycotton. These materials allow moisture to escape more easily, preventing excessive condensation buildup. Look for tents with good ventilation features such as vents and an anit-condensation layer. Select materials that balance waterproofing with breathability.

4 – Control moisture inside 

Limit the introduction of moisture inside your tent. Wipe down wet gear before bringing it in or leave it outside. Avoid activities that generate excess humidity, like cooking or boiling water, within the tent.

5 – Utilise ventilation aids

If your roof tent’s ventilation options are limited, consider using battery-operated fans to improve airflow. Position the fans strategically to move air around and facilitate moisture evaporation.

6 – Insulate the base

Insulating the base of your roof tent can help prevent the cold from meeting warm air inside, a primary cause of condensation. Place foam or insulated sleeping pads underneath to create a barrier.

7 – Move your pet out

It may seem mean but your pets will be breathing out moisture and it will be released from their fur. You train them to sleep outside or in your car, if it’s wet. If they are sleeping with you, just make sure to towel them down completely to avoid extra moisture in the roof tent.

8 – Warm-up period

When entering the tent after outdoor activities, the temperature difference between your body and the tent interior can lead to initial condensation. Allow the tent to gradually warm up by leaving vents slightly open, reducing the impact of this issue.

9 – Use silica gel packs

Reuseable silica gel packs are excellent moisture absorbers. Place them strategically inside your tent to help combat excess humidity. Regularly dry out or replace these packs to maintain their effectiveness.

10 – Regular surface wiping

In the morning, take a moment to wipe down any surfaces inside the tent that may have accumulated condensation. This prevents moisture from being absorbed into materials and prevents mould or mildew growth.


Condensation is a common challenge faced by roof tent campers, but armed with the right knowledge and strategies, you can effectively combat it. Firstly, try prioritising ventilation, proper campsite selection, breathable materials, and strategic moisture management to see the difference in your tent. You can significantly reduce condensation’s impact and enjoy a comfortable, dry, and memorable camping experience in your roof tent. Embrace these tips and embark on your next outdoor adventure with confidence. Happy camping!

Leave a Reply

Your email address will not be published. Required fields are marked *