Keter Premier 7.5x 7 Apex Tongue & groove Shed.A Keter shed provides ample airflow by having specifically placed vents but as with any shed condensation can form. If you do see signs of condensation here’s Keter’s handy hints to help you to protect your sheds contents. To prevent condensation inside your shed is to wherever possible not allow any excess moisture inside the shed. To do this try & ensure all equipment inside the shed such as camping gear or sporting goods are cleaned & dried before storing them in the shed. Try to let as much air inside the shed on cooler dry days by opening the shed doors. This will help the air circulation inside the shed & will drop the humidity level inside. Please note the durable material that all Keter sheds are made from will not be affected by the moisture or condensation as part of the Keter no maintenance promise.