Frost-burst pipes, frozen outside taps, and slow drains caused by tree roots — Kapiti winters bring a predictable run of plumbing problems. A short pre-winter checklist.
Kapiti winters do not get the deep frosts of Central Otago, but cold snaps overnight still drop pipework temperatures below freezing — especially in unheated subfloors, unlined garages and outside walls. Most of the late-July plumbing call-outs Tony deals with come back to two or three avoidable causes.
Lag exposed pipework
Any cold or hot water pipe running through an unheated space is at risk of freezing on the worst nights. Lagging foam is cheap and goes on in minutes. The places that matter most:
- Pipework running across the subfloor from the cylinder to the bathrooms.
- Pipes in the garage or carport walls.
- The cold feed to outside taps and laundry tubs.
- Mains feed where it enters the house through an exterior wall.
Drain your outside taps
Outside hose taps and irrigation lines that retain water can freeze and split the brass. Once the brass is cracked you will not see it until spring, when you turn the tap on and water gushes inside the wall. Isolate them at the indoor stopcock if you have one, and open the outside tap to drain.
Check the hot water cylinder
Winter is when cylinders get pushed hardest — longer showers, more dishes. A cylinder that was already on its way out tends to give up between June and August. Listen for knocking or popping noises and check the base for damp before peak winter sets in. Better to replace on a planned day than during a wet weekend.
Clear the gully traps
Outside gully traps clogged with autumn leaves are the most common cause of a slow-draining shower or kitchen sink in July. Two minutes with a pair of gloves saves a $200 call-out. While you are out there, check stormwater gratings and downpipes — Kapiti can dump a lot of rain in a short window and overflows back up the closest indoor fixture.
Know where the mains stopcock is
If a pipe does burst in the middle of the night, the only thing that matters is reaching the mains stopcock fast. Walk the family through where it is now — usually near the front boundary or attached to an exterior wall — and make sure the tap turns. Stopcocks that have not been operated for years often seize. Tony can replace one in under an hour.
Phone before the first frost rather than after the burst pipe — pre-winter checks are cheap, leaks are not.