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Roof Ventilation and Avoiding Condensation


Roof ventilation and avoiding condensation are extremely important. A roof that is well cared for and maintained will last for much longer than one that is left to its own devices. Identifying problems early saves a lot of extra costs and heartache. The roof of a home is subject to assaults from all kinds of weather every day and has to stand up to the elements of wind, snow, rain, and sun. Some of nature’s insects and plants can also cause damage to a roof, but the biggest way a homeowner can be sure of their roof is roof ventilation, avoiding condensation.

Small Problems Become Big Problems

The roof is often overlooked until it begins to leak or missing tiles are spotted, but it is good practice to ensure that your roof is well ventilated as condensation and trapped air can cause serious damage to the roof structure. Even if you have effective roof ventilation always ensure it is checked when you add new insulation to the loft and be careful not to block any inlets and outlets for airflow with objects that may be stored in the roof space. Check roof timbers for dampness or rot and you can even check with a dampness meter.

In dormer houses, roof ventilation issues are sometimes discovered because the gap between the dry lining and roof space traps condensation causing mould spots on the walls of the upstairs rooms particularly on the north facing side. Inadequate heating in a home can cause problems and condensation in a really cold room can be very bad. Air circulation and a constant ambient temperature combined with proper airflow will keep your roof sound and sturdy.

Proper Roof Ventilation

Proper roof ventilation, avoiding condensation needs to create air circulation in and out of the home. An air intake and exhaust should be present. Proper roof ventilation also means the roof will insulate your home and prevent heat escaping and cold entering. This will mean your house stays warm at an even temperature as it is well insulated. For air conditioning users, this means the air conditioner or inverter heating system does not have to work as hard. Proper roof ventilation will mean less energy is used so your utility bills are lower. There are any types of roof ventilation and the right choice depends on the shape and size of the roof and the outside layout of your home such as positioning of trees and other features.

Creating proper roof ventilation

In order to create proper roof ventilation, avoiding condensation it is necessary to rotate air in and out of the house in a way that air circulates freely. Advice is available and we are always ready to assist you with ventilation problems that can often be eradicated simply. Restricted airflow can cause warm air build up in the roof space warping, cracking rafters, and other roofing materials.

Roof space Moisture Build Up

High humidity coupled with rain can cause problems if there is nowhere for damp air to escape to especially if there are leaks in the roof. Household appliances can cause serious condensation in homes, dryers, washing machines and even the occupants generate moisture that may become trapped in the roof space as the moist warm air rises. Some bathroom extraction systems send warm moist air into the roof space, which is not a good idea. Proper roof ventilation, avoiding moisture needs a system that creates a negative air pressure that sucks warm air out of the loft space replacing it with fresh cool air from outside preventing damage.

The volume of air intake must be more or equal to air exhaust. With ridge vent systems, intake vents are placed low on the roof in the eaves. However, there is little uniformity of structures and buildings so there are few “off the shelf” roof ventilation solutions, as the system has to be right for the structure. Single story houses for example can have gable vents. These are louvered frames in outside walls. Most systems are a variation of the ridge system offering a discrete, storm proof and effective solution.

Once you have proper roof ventilation system in place consider your heating systems and air conditioning units as well and get them checked over. We are on hand to advise you on all aspects of home ventilation and problems need to be addressed quickly before any long-term damage is done.

Posted in: Latest News - On: 7th of February, 2013