Has anyone ever used a dye to locate a very small central heating leak?
I keep getting air in to the towel rads and system pressure will drop only and slowly after I bleed them.
I have been over the system from top to bottom but cannot see anything obvious.
The system is mainly plumbed in speed fit apart from rad tails and my suspicion is that I have a very small leak that allows air in to the system.
The other possibility is that our UFH downstairs has an issue although I think the chances of that are slim unless it is at the manifold.
I have wrapped most joints in kitchen towel but not found anything although the water could easily be evaporating off before detection.
I am considering either a UV dye, although this seems expensive, or fluorescein which is readily available and apparently also shows up better under UV.
I have not found much info using the normal search methods so hoping someone may have experience of using a dye and what type?
I keep getting air in to the towel rads and system pressure will drop only and slowly after I bleed them.
I have been over the system from top to bottom but cannot see anything obvious.
The system is mainly plumbed in speed fit apart from rad tails and my suspicion is that I have a very small leak that allows air in to the system.
The other possibility is that our UFH downstairs has an issue although I think the chances of that are slim unless it is at the manifold.
I have wrapped most joints in kitchen towel but not found anything although the water could easily be evaporating off before detection.
I am considering either a UV dye, although this seems expensive, or fluorescein which is readily available and apparently also shows up better under UV.
I have not found much info using the normal search methods so hoping someone may have experience of using a dye and what type?
