I am having Double glazing fitted and usually leave the professionals to get on with the job, but I did notice that when the frames were fitted they left the old ( loose ) mortar in place and put the frames on top. Is this ok? Or should they have put new mortar in?
They are coming back to make this good, but they want to use sealant, is this a good replacement or should mortar be used?
TIA.
They are coming back to make this good, but they want to use sealant, is this a good replacement or should mortar be used?
TIA.