Staying comfortable, year-round
Controlling moisture and ventilation is essential to creating the right atmosphere for health and comfort.
It is also absorbed into fabrics and building materials.
The problem with this moisture build-up is that it can cause mould and mildew on walls and fabrics, which is not only unsightly, but can trigger allergies.
For example, dust mites – the source of one of the most powerful biological allergens – thrive in damp conditions.
If you are building a new house, there are a number of chemicals and resins present in many building materials which continue to leak into the indoor atmosphere for many months after you move in.
This can be managed with good ventilation.
The options for managing moisture are: Good ventilation. Window joinery with built-in drains – that allow condensation to drain to the outside.
Keeping the house warm and dry through heating.
Extraction fans in bathrooms and kitchens.
Good insulation to keep the home warm and reduce condensation and mould growth. from the indoor air.
As the stale air is removed from the house it passes through a heat exchanger preheating the outdoor clean air.
Some heat loss is experienced which needs to be made up.
Forced air ventilation blows dry air into your house from the roof space above the ceiling.
It works best where there is a decent amount of space in the roof. It must also be dry and preferably warm on sunny winter days.
Extractor fans are used in places like the kitchen and bathrooms to remove steam.
Keeping cool in summer
Keeping a house cool in summer is also an important consideration.
Measures to control overheating include:
Controlling heat from the sun by reducing window areas or using tinted or reflective glazing, and shading.
Increasing ventilation – crossflow ventilation, extractor fans and ceiling fans and passive vents.
Increasing insulation, especially in roofs.