How To Keep A Tin Roof From Sweating

Ensure air can circulate.

How to keep a tin roof from sweating.

Trapped humid air condenses due to the different exterior and interior temperatures. Another possibility is to install closed cell spray foam on the underside of your metal roofing. Having ventilation holes around the roof at eaves level and in the gable walls allows moisture rich air to escape. But that is a lot of work.

By running one or multiple units you can drop humidity levels from within. You need a barrier between these materials. The best way to fix the problem is to remove the roofing panels install plywood roof sheathing and then re attach the roofing panels. There are primarily two ways this happens.

When warm water vapor touches the tin roof on a chilly night the warm water is condensed by the cold. This will provide flow through ventilation at the point where the hottest air rises to. If there is no high level ventilation already installed install a 15cm ventilation grille at the highest point at each end of the eaves. Use a dehumidifier dehumidifiers help to balance humidity in your home.

Traditionally condensation is managed by insulating the metal roof so that the panel temperature never reaches the dew point. Plastic sheeting is one such barrier. Using a good vinyl backed insulation on the roof and walls of your metal building prevents the contact between the warm humid air and the cool dry metal panels. The key to getting condensation to evaporate is air flow.

Alternatively air conditioning is also helpful for reducing humidity levels. The tin roof creates a vapor barrier that blocks water vapor from getting through it. Having vents in all elevations of the shed is an effective way of minimising metal roof sweating. You must have a vent at both ends not just one.

This is often accomplished using vinyl backed fiberglass insulation to prevent humid air from coming into contact with the cooler metal roof which may be at or below the dew point. The five key points to stop your metal roof sweating are. You may need to install proper vents also known as insulation baffle vents on the top of the insulation. Insulate and try to keep from reaching the dew point add a preinstalled membrane to absorb and release the condensation as it forms with the natural weather cycle traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point.

There is no clean way to attach the plastic. Insulate your metal building. Ensure that you have a minimum of a 1 1 2 inch air space above the insulation.