I'd a condensation problem in my downstairs cloakroom, so I tackled this primary. The secondary glazing seemed good and it solved the trouble. We live in a Victorian flat with large draughty sash windows. Our secondary glazing arrived at 7am about the day promised, equipped to the millimetre, functions correctly, https://makeuplook11098.blogdeazar.com/26952093/what-does-london-sw3-secondary-glazing-services-mean