Healthy Homes Compliance: Ventilation & Insulation That Just Works

We install insulation, sort out ventilation and fix faulty joinery.

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We are happy to help, any time.

If you own a rental, the law says it needs to be warm, dry and ventilated properly. The Healthy Homes Standards aren’t optional. If your property doesn’t meet them, it’s your responsibility to put it right.

At Window Doctor, we help Auckland landlords and homeowners do exactly that. We upgrade insulation, sort out ventilation and fix the windows if they’re leaking heat or letting in damp. We don’t just patch it up. We fix it properly, so the place feels better and passes inspection.

What Do the Healthy Homes Standards Say About Ventilation and Insulation?

These rules are set by the government under the Residential Tenancies Act. You can check them yourself on Tenancy Services. Here’s the short version.

Ventilation

Every bedroom, lounge and living area must have openable windows that make up 5% of the floor area.
Kitchens and bathrooms must have working extractor fans vented outside.
If there’s a mechanical ventilation system, it needs to meet current Building Code standards.

Insulation

Ceiling insulation must meet R 3.3 in Auckland. If the existing insulation doesn’t, it needs a top-up or replacement.
Timber floors need R 1.3 underfloor insulation, unless there’s a concrete slab.
Insulation must be in good condition, with no gaps or damp patches.

We know the standards, and we work to them. No guesswork.

Why Upgrading Ventilation and Insulation Matters

When ventilation’s bad, the air stops moving. That’s when damp builds up. Mould shows up on the ceiling. Windows drip with condensation. It’s bad for the house and for anyone living in it.

Missing or poor insulation costs money too. Heat escapes through the roof and floor. Tenants run the heaters all day and still feel cold. You’re throwing energy and money out the window.

Window joinery plays a part in this. Gaps, worn seals, stuck latches and single glazing all make things worse. We’ve worked on enough homes to know exactly where to look.

What We Do: Step By Step

We don’t do generic packages or silver bullets. Just solid, practical upgrades that get the job done.

1. On-Site Inspection & Compliance Check

We come out and take a proper look. We check the insulation, the fan systems, the windows, the seals. You’ll get a clear breakdown of what passes and what doesn’t. No fluff. No time wasted.

Book your inspection here

2. Ventilation Install and Repair

We install compliant extractor fans in kitchens and bathrooms. These are vented to the outside, like they’re meant to be.

Kitchen fans – 150 mm or 50 L/s

Bathroom fans – 120 mm or 25 L/s

We also fix or replace windows that don’t meet the 5% openable rule. Our team handles full aluminium joinery service, so no trades get missed.

3. Ceiling And Underfloor Insulation

We top up or replace insulation with products that meet NZ standards. Everything’s fitted securely and done right.

Ceiling insulation to minimum R 3.3

Underfloor insulation to R 1.3 for raised timber floors

Damp or missing insulation? We remove it and replace it. Everything gets checked and signed off.

4. Window And Joinery Fixes

We repair aluminium windows and doors, reseal tracks and replace worn-out hardware. Proper draft-stopping makes a big difference.

See how we handle aluminium joinery

5. Full Documentation So You Can Prove Compliance

We give you written confirmation of all completed work, insulation specs and compliance details. If an inspector or manager needs evidence of compliance, you’ll have it on hand.

Questions We Get a Lot

Do I have to upgrade every room?

Only bedrooms, lounges and living spaces need to meet the ventilation standard.

Can I use my old windows?

Yes, as long as they open properly and meet the size rule. If not, we can usually repair them.

Do rental inspections check the insulation?

Yes. A visual check is often enough, but some inspectors ask for install photos or receipts. We provide both.

Why Call Window Doctor?

We’ve been fixing Auckland homes for over 40 years. Windows, joinery, insulation, damp, ventilation – we’ve seen it all and sorted it. No call centres. No sales teams. Just tradies who show up, get it done and do it right.