Speedfit "loose" under floors

Actually, having just been and poked a webcam onna stick into it, it isn't. There are some cross-pieces between the joists (noggins?) in the way. Bum.

Still, a lesser form of the question applies - how thoroughly does one generally need to fasten speedfit in place in areas that are out of sight?

Pete

From memory, the manufacturer recommended horizontal distance between clips is about 400mm. In practice, with mains pressure *cold* water, and jointless, I don't it would make any difference. Hot pipes will sag quite a lot within days/weeks - this may give you airlocks at high- points, if low pressure.

Comprehensive guidance in a pdf on their website:

As I said, the under-the-floor plan is on hold anyway, until I take the kitchen ceiling down (which is planned eventually) in which case I can clip at the recommended distances. I am now just wondering how fully I need to clip things in place inside my bathroom false wall.

Pete

but if it's lying on top of ceiling sagging shouldn't be an issue.... assuming hot water is at worst an upstairs cylinder don;t think airlocks will be problem either.. I'd just shove it through and forget the clips that are beyond reach.

cheers jim