Cyclone season and your Mackay pool: what to expect, what to prepare, what’s covered

Luke Geering Last updated September 17, 2026 4 min read

Cyclone season in Mackay runs November to April, and if you’re building a pool in this region, weather planning isn’t optional — it’s a normal part of ownership. The good news: fibreglass pools handle cyclonic weather remarkably well when they’re properly installed. The bad news: not every pool is properly installed, and not every warranty covers what you might assume.

Here’s an honest guide to what genuinely goes wrong with pools during major weather events in tropical North Queensland, what you can do to prepare, and where the Compass triple warranty actually protects you.

The three real risks — in order of likelihood

1. Rising groundwater (hydrostatic pressure)

The single biggest cyclone-related pool risk isn’t wind — it’s what happens underground. Extended heavy rainfall raises the water table. When groundwater sits higher than the water inside your pool, the empty space around the shell fills with water and the pool wants to float — like a boat. If groundwater levels drop unevenly afterwards, the shell can end up with permanent bulges, cracked floors, or full structural movement.

This is the risk that home insurance almost universally excludes. It’s also the risk that most other pool manufacturer warranties exclude. Compass developed the HydroPro™ hydrostatic relief valve specifically to address this — every Compass in-ground install includes it as standard, and the valve releases groundwater pressure at 5× the flow rate of an industry-standard valve. Backed by a lifetime warranty against hydrostatic damage.

What you should do: nothing. The valve is automatic. If your pool is a Compass, you’re covered.

2. Debris in the pool

Leaves, small branches, and lightweight garden furniture will end up in the pool during a cyclone. This is unavoidable and mostly cosmetic — the shell won’t be damaged by floating debris, and the filter can handle a surprising amount of organic material.

What you should do before a warning: clear the pool surround of anything that isn’t tied down, secure outdoor furniture, take down umbrellas and shade sails, and remove any pool cover (they become sails in high wind).

3. Blown-in heavier objects

Genuine risk: heavy items being carried by cyclonic winds into the pool. Trampolines, sheds of galvanised iron, unsecured LPG bottles, roofing debris from other houses. Any of these can chip or crack the shell surface — cosmetic damage rather than structural, but a real repair job.

What you should do: any Mackay property should already have a pre-cyclone routine. If you don’t, the local council publishes one and it’s worth reviewing every October.

What NOT to do

Every cyclone season we get the same call: someone has drained their pool because they’re worried about it overflowing. Do not do this. A drained pool is dramatically more likely to be lifted by hydrostatic pressure than a full pool. The water inside your pool is what holds it in the ground.

If overflow is a concern, lower the level a metre — no more. The weight of the remaining water still anchors the shell.

What the Compass triple warranty actually covers

Hydrostatic damage — lifetime coverage

The HydroPro™ valve mechanism itself is warranted for the life of the pool. Damage to the shell caused by hydrostatic pressure is covered under the lifetime structural warranty on Bi-Luminite pools, and on Vivid’s own warranty terms. This is a genuinely unusual coverage in the fibreglass industry — most manufacturers exclude hydrostatic damage entirely.

Structural — lifetime on Bi-Luminite

Cracks or bulges in the shell caused by manufacturing defects are covered for life. Damage from cyclonic debris impact is generally not — that’s an external event, not a manufacturing issue. But structural movement caused by ground conditions IS covered, because that’s what the Ceramic Core construction is engineered to withstand.

Cosmetic — 10 years on Bi-Luminite

Interior surface defects covered for 10 years. Debris impact that chips the surface isn’t manufacturing-related and typically isn’t warranty coverage, but it’s usually a straightforward gelcoat repair rather than a major job.

What your home insurance covers

Speak to your insurer for specifics. Broadly, most Mackay home policies cover cyclonic damage to structures (including your pool shell from flying debris) but explicitly exclude hydrostatic damage. That’s exactly the gap Compass’s HydroPro™ warranty is designed to fill.

After the event

Once the cyclone has passed, the pool cleaning is easier than it looks. Skim visible debris, run the filter for 24–48 hours continuous, shock the water with chlorine to counteract organic contamination, and check pH. Most Mackay pools are swimmable within a week.

If you notice anything unusual — cracked coping, uneven waterline, movement in the surrounds — get us out for a look. The triple warranty is genuinely usable, and we’d rather assess something minor early than deal with a bigger problem later.

Frequently asked

Straight answers.

Should I drain my pool before a cyclone?

No — never drain your pool before a cyclone. A full pool is much harder to lift by rising groundwater than an empty one. The water inside is what anchors the shell.

What is hydrostatic damage and is it covered?

It's damage caused by rising groundwater pressure pushing the pool shell up. Home insurance almost always excludes it. Compass's HydroPro™ valve prevents it, and Compass's warranty explicitly covers it — a rare combination in the fibreglass industry.

Do I need to prepare the pool specifically before a cyclone?

Clear the surround of anything that isn't bolted down (furniture, umbrellas, shade sails, floats). Remove pool covers — they become sails in high wind. Otherwise, leave the pool full and let HydroPro™ handle groundwater automatically.

What if debris damages my pool?

That's typically a home insurance claim rather than a warranty claim — external damage isn't a manufacturing defect. Most impact damage is cosmetic (gelcoat chips) and repairable.

How soon can I swim after a cyclone?

Usually within a week. Skim debris, run the filter continuously for 24–48 hours, shock the water with chlorine, and rebalance pH. If you have Vantage self-cleaning, the recovery is faster because the circulation handles most of the physical debris automatically.

Ready when you are.

A free site visit, a straight quote, and no follow-up pressure. Luke will come to you anywhere from Mackay to the Isaac region.

Luke Geering
Written by
Luke Geering

Compass Pools Authorised Dealer · Mackay & Isaac

Luke installs Compass pools across Mackay, Moranbah and the Isaac region. He’s the one who’ll walk your block on the free site visit, and the one on the tools during the build.

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