White dust around compression fittings

[jacoscar]

I am starting to see some white dust around some compression fittings I fitted a couple of years ago

Do you think it is just because they’ve been leaking and those are limescale deposits or something else?

 

[oldbutnotdead]

If it's the top tee you're talking about, yes it's leaking.

 

[jacoscar]

If it's the top tee you're talking about, yes it's leaking.

All the tees really

 

[Madrab]

Yes Limescale - Calcium Carbonate, it's the residue left when the water dries up.

Are the fittings wet? give them a rub with some limescale remover, dry them up and leave for a little then check and see if they are wet.

 

[jacoscar]

Yes Limescale - Calcium Carbonate, it's the residue left when the water dries up.

Are the fittings wet? give them a rub with some limescale remover, dry them up and leave for a little then check and see if they are wet.

I never noticed them being wet to be honest

 

[Madrab]

Compression fittings can be like that, especially if they are fitted when the pipe is wet and the residual hard water, if not dried up, can leave a residue like that. As suggested, give them a wipe round or even a scrub with a green scourer and then completely dry them and go back after an hour or 2, if they're not wet/damp then don't worry about them.