Can anyone please enlighten me is it worth upgrading from standard to 6mm and or E glass/low E?
Due to finances double glazing is not an option so we are looking at the alternatives. We are not worried about summer heat only combating winter cool with overnight temps down to 0 regularly but day time of 18 ish.
We have considered an increase to 6mm and also the E coating. The WERS tells us the U value drops by about 2. Logically, that has to be better than standard but is that the thickness or the coating doing that?
Is a drop of 2 worth it? Do we go ahead with the upgrade to 6mm and or coating or are we just throwing money away doing either/or both?