Keep Your Home in Shape Year-Round
New Zealand's climate — high UV, coastal salt, heavy rain, and frost — is hard on houses. The difference between a home that stays solid for decades and one that develops expensive problems is usually maintenance. Here's a practical season-by-season checklist.
Autumn (March – May)
Autumn is about preparing for winter. The weather is still dry enough to get outdoor work done.
- Clean gutters and downpipes: Clear leaves and debris before winter rain starts. Blocked gutters cause water damage to fascia, soffits, and foundations. If you have trees nearby, this is the most important thing you'll do all year.
- Check the roof: Look for cracked or missing tiles, lifted iron, and damaged flashing. Get a roofer to fix any issues before winter storms. A $300 repair now prevents a $3,000 leak later.
- Service the heat pump: Clean filters and book a professional service. A well-maintained heat pump runs 20–30% more efficiently than a dirty one.
- Check exterior paintwork: Look for peeling, cracking, or bare timber. Touch up problem areas before winter moisture gets in. Bare timber exposed to a wet winter will rot quickly.
- Clear drains and stormwater channels: Make sure water can flow away from the house. Standing water near foundations causes damp and structural issues.
- Insulate: If your home isn't well insulated, autumn is the time to sort it. Installers are less busy, and you'll benefit all winter.
Winter (June – August)
Winter is about monitoring and managing moisture. Most outdoor work should wait for spring.
- Ventilate daily: Open windows for 15 minutes in the morning to flush moisture. Kiwi homes are particularly prone to condensation and mould.
- Check for leaks: After heavy rain, inspect ceilings, window frames, and walls for water stains. Catch leaks early.
- Monitor moisture levels: If you see persistent condensation on windows, mould in corners, or musty smells, the house isn't ventilating enough. Consider a home ventilation system.
- Keep an eye on trees: Winter storms can bring down branches onto roofs and power lines. Trim overhanging branches before they become a problem (get an arborist for anything large).
- Test smoke alarms: Press the test button on every alarm. Replace batteries if they're older than 12 months.
- Plan spring projects: Winter is the best time to get quotes for spring work. Tradies are typically less busy and more responsive to enquiries in June–July.
Spring (September – November)
Spring is fix and prepare season. The weather is warming up and tradies are gearing up for summer.
- Exterior wash: Waterblast the house, paths, driveway, and deck. Winter grime, moss, and mould build up over the wet months. A house wash ($300–$600) makes a huge visual difference.
- Paint and stain: Spring is prime time for exterior painting and deck staining. The weather is warm enough for paint to cure but not so hot that it dries too fast.
- Check for winter damage: Walk around the outside. Look for lifted cladding, damaged gutters, cracked paths, and fence damage from winter storms.
- Service hot water: Get your hot water cylinder or gas system serviced. Cylinders should be serviced every 5 years minimum.
- Deck maintenance: Sand and oil/stain timber decks. Spring is ideal because the timber has dried out from winter but hasn't been baked by summer sun yet.
- Garden and drainage: Clear any garden growth away from the house. Soil and plants against exterior walls cause moisture problems and can damage cladding.
Summer (December – February)
Summer is for outdoor projects and enjoying the result.
- Big outdoor projects: This is the best weather for building decks, fences, landscaping, and exterior renovations. Book tradies early — summer is peak demand.
- Check subfloor ventilation: In dry weather, look under the house (if accessible). Check for standing water, blocked vents, and signs of borer or rot.
- UV protection: NZ's UV is brutal. Check that exterior timber, decks, and outdoor furniture are protected with oil, stain, or paint. UV damage accelerates quickly over summer.
- Test irrigation: If you have a garden irrigation system, run it through and check for leaks or blocked heads before the dry period hits.
- Pest check: Summer is peak season for ants, wasps, rodents, and borer. Look for signs and treat early before they establish.
The 10-Minute Monthly Walk-Around
Beyond the seasonal checklist, a quick monthly walk around the outside of your house catches problems early:
- Roof: any visible damage?
- Gutters: overflowing or sagging?
- Cladding: peeling paint, cracks, gaps?
- Windows and doors: gaps in seals?
- Foundations: cracks, standing water?
- Paths and driveway: trip hazards?
Ten minutes a month can save you thousands a year.