Leaky

When we arrived home, having taken a slight detour to Bolton en route, Nat was at work, so there was no-one available to explain the towel on the kitchen floor.

Dropped by accident? Left over from the last load of laundry? Who knew. Didn't take long to discover it was there to soak up the water seeping out from under the corner of the cupboard unit housing the oven. But where was it coming from? It continued to seep out slowly overnight, so the following morning we called Kitchen Guy. He was round within the hour. Removed the plinths, revealing evidence that the water had been there for some time. Wet footings under the tumble dryer and washing machine, but which was at fault?

And why had it taken so long to manifest, when neither machine had been used for a week?

He pulled out the dryer and sat it on a table protector to avoid damaging the floor. We ran a programme through the washer. Nothing. We dried a wet towel in the dryer. Nothing. We let the dishwasher run an empty cycle. Nothing. The mystery remained.

After an hour or so he had to leave, but we agreed it was sensible to leave the dryer out and see what transpired. The answer was... pretty much nothing. We'd brought a suitcase full of laundry back from the Lakes, so Nikki attended to all of that - three loads; washing and drying. No further leak. We loaded up the dishwasher with the Sunday pots. No leak.

The dryer sat in the middle of the kitchen through Monday, Tuesday, until on Wednesday morning Nikki discovered a small puddle on the dryer's mat. On closer inspection the puddle was larger than first thought, having seeped under the mat. I tilted the dryer to let Nikki wipe under the wet side, and more water pissed out on the other side. Where was it all coming from? The dryer hadn't been used since Sunday!

I checked the configuration of the drains and spotted what I thought was the problem. The dryer was connected to the same outflow pipe as the boiler condensate. I figured there was some siphon action going on when the boiler was pumping out. We called the plumber. He looked sheepish, and extended the home-grown standpipe he'd installed to take the dryer output, so that it had more than 1" of head above the condensate outflow. Sheesh.

For the time being, we've left the dryer out to prove the solution, and I'm left wondering if we'll ever have a job done in this house without something going wrong :(