Originally Posted by altis

Well, after nearly 4 hours of hot air blast from our 3kW heater the scullery finally thawed out. I came back in to find hot water pouring merrily down the sink. At the same time I was trying to: block off air bricks with sheets of A4; drain some hot water from pipes near radiator to encourage frozen bit to melt; assisting jump starting neighbours car; checking our two cars would fire up (Mrs A's locks were frozen) and clearing / defrosting mine. The radiator wouldn't unblock until I gave it 20mins of blast from the heater under the floorboards. Luckily, there is an access hatch nearby.

The washer seems to have survived okay - touch wood. I ran a quick cycle and loads of muck came out but there were no leaks. It appears the water came from next door's scullery where they'd had a burst pipe.

Unions seem fine except for the one containing the bleed valve. There's a little seepage from one side where I've been flexing it trying to make the cold water run downhill. One other advantage of plastic pipes is there are very few joints.