We had a problem with the pressure dropping in our boiler and it was suggested that we have somewhere in the house a small leak. We have changed a boiler 2 days ago and the pressure is still dropping and I have to top it up every 2 days.
Before I go and ask the leak detectors to come and find it (which will also be difficult as the leak is indeed minor) I was thinking of using a sealant.
Does anyone know if the work? Or is it a temporary solution. Also, is it likely that they may cause damage to the system and the radiators or boiler?