Better condensation control, better health

If you’ve noticed your windows misting up in the mornings, you’re not alone. Condensation happens when warm, damp air inside your home touches the cooler glass.

Damp combined with poor airflow can promote the growth mould and mildew on certain surfaces. Breathing in mould spores can irritate the lungs and aggravate allergies, asthma and other respiratory issues.

Even if you don’t have allergies, living in a damp, humid environment can make your home feel uncomfortable and musty.

That’s why tackling condensation early – through better ventilation, heating, and insulation – isn’t just about protecting your windows. It’s also about keeping your home healthier and safer to live in.

The key to preventing condensation lies in reducing excess moisture and improving air circulation. Start with good ventilation – open windows when possible, use extractor fans in kitchens and bathrooms, and ensure your home has adequate airflow. A dehumidifier can also be a great investment in areas prone to dampness.

Heating your home evenly helps too. Sudden temperature differences encourage condensation, so try to maintain a consistent indoor temperature. Other strategies to reduce condensation include simple things like drying clothes outside when you can, covering pots when cooking, and ensuring any venting you have in your home is clear from obstruction.

The New Zealand window and glass industry has been tackling the window condensation problem for many years now and there are some fantastic products available for New Zealand homes. Whether you’re building or thinking about renovating, things like double glazing and thermally broken frames are game-changers when it comes to making your glass less prone to moisture buildup.

With the right mix of ventilation, insulation, and mindful habits, you can keep your windows clear and your home healthier – but if you want the ultimate solution, talk to a local NZ Window and Glass Association Member about your options.

https://www.wganz.org.nz/find-member/

Living in a home with old timber joinery? Here’s a few tips to save on heating costs

Minimising heat loss through old timber windows can significantly improve your home’s warmth and energy efficiency, especially in winter. There are a range of options available depending on your budget and whether you’re after a quick fix or a long-term solution.

One of the simplest and most affordable ways to reduce heat loss is by using heavy curtains, thermal drapes or even honeycomb blinds. These act as a barrier between the cold glass and the warm interior air, especially at night. For best results, curtains should be full-length, lined, and fit snugly against the window frame to prevent warm air escaping around the edges. It does pay to do your homework to weigh up the costs of new thermal window treatments vs the costs of upgrading your windows to double glazing – particularly if you’re planning to stay in the home long-term.

Another easy fix is draught sealing. Over time, timber joinery can shrink or warp slightly, allowing cold air in and warm air out. Applying self-adhesive weather stripping – such as foam, rubber, or brush seals – around window sashes and frames helps block these leaks. It’s especially effective around movable parts like meeting rails and sash edges.

Maintaining your timber joinery is also important. Regularly sealing or repainting the frames helps prevent moisture damage and air leaks. Cracked putty or rotting timber should be repaired promptly, as these can significantly affect thermal performance.

Another tip – window pelmets above curtains can stop warm air from flowing behind the curtain and cooling against the glass. During the day, open curtains to allow sunlight in and take advantage of passive solar heating.

If you’re ready for a more substantial investment, retrofitting double glazing into your existing timber frames is probably your best option – simply get in touch with one of our members and they’ll be happy to discuss your options.

https://www.wganz.org.nz/find-member/