I've got an inset fire which is slightly too big for the opening - the seals can't press against the front.
How can I reduce the opening by a couple of cm either side? I think just mortar/fire cement won't be strong enough as the seals will be pressing against it. The mortar may crack too...
How can I reduce the opening by a couple of cm either side? I think just mortar/fire cement won't be strong enough as the seals will be pressing against it. The mortar may crack too...