New house, low pressure in 2 rooms but not all

[dagoof]

Just moved into a new house and having a bit of bother with the pressure in the cold. The kitchen, upstairs en suite and bathroom sink pressures are all good but the bath cold and a little utility cupboard sink feed (which washing machine is hooked to) are all a trickle.

Above the floor, there's no bolofixes are anything restricting flow. Problem is, the house is on level ground and there doesn't appear to be a floor hatch anywhere (or its been floored over by previous owner). I managed to pull up a board in the utility cupboard and it's only 8" deep.

A mate of mine's a plumber but he's not too great at problem solving tbh, shrugged his shoulders and said we'd need to get under the floor, but obviously I don't want to tear up 2 floors (bathroom is tanked wet room).
Where do we start?

 

[gigz]

Have you looked at the state of the tap washers/discs ? I would start there. If ok i would then be disconnecting the pipework, and put a hose on to see if pressure increases.

 

[buck51]

Have you checked the pressure? the pressure should be the same. but only if they come from the same supply,

If the standing pressure is the same, then you have a flow restriction.

It could be the taps with a trickle are on a tanked supply.

 

[dagoof]

Thanks for the replies - my mate came back around. Took cartridge out of tap and it was full of grit, others the same, looks like the main might be burst