How do you view your loft or attic? Do you see it as simply a storage space or something more complex altogether? At All Seasons Industrial Roofing we see it as a part of your overall roofing system, and a pretty important one at that!
Why is the loft so important?
Ensuring your loft is properly ventilated can have a marked effect on your roof. Good attic ventilation can keep energy costs down and help your roof to last as long as possible.
Ventilation allows fresh air to enter the loft space whilst allowing stale air to get out. Circulation of air is usually encouraged through the placement of ventilation near the bottom of the attic space at the soffits or eaves (intake), and at the top peak(s), or ridge(s), of your attic space (exhaust). Effective ventilation means that your loft should maintain a reasonably stable temperature and humidity level, regardless of the season.
For any ventilation system there needs to be balanced intake and exhaust. This is achieved when the natural forces of air pressure create a push and pull effect around your roof, namely intake and exhaust. If intake isn’t fully achieved air may only circulate around the top of your loft space, leaving stagnant air at the bottom. Vents should also be present on both sides of the attic to allow for full circulation.
Good loft ventilation in warm weather
Everyone knows that hot air rises. Therefore it makes sense that on a warm day, hot air will make its way into your loft. Poor ventilation means that the warm air will stay there before eventually making its way back down into lower living areas. In turn, in order to make your house cooler, this can then lead to the use of fans or air conditioning, all with costs attached. A well ventilated attic allows warm air to find a way up and out of the property.
Good loft ventilation in cold weather
In winter the challenge to your loft space is when warm air from living areas meets with cold air creating condensation on cold surfaces. Moisture is something that can certainly be detrimental to your roof. It can cause buckling, swelling and rot in vital areas weakening your roof and reducing load capacity. Condensation also promotes the growth of mildew and mold, affecting allergy suffers and lowering indoor air quality substantially.
What to do next?
If you’re worried that your loft might not be well ventilated, all is not lost. It doesn’t necessarily mean that your roofing system needs to be replaced. There are ventilation options for most roofs that should protect you against any of the issues we’ve discussed.