My builder is building an extension which is 3800mm wide by 3000mm .
At the 3800mm end I wanted a open patio door of 3000mm. But he is saying that he has to put in 300mm to support the beam at both sides.
But surely - 3800 - 300 - 300 equals a 3200mm gap. but he is saying that he needs 300mm away from the side walls?
is this right?
Daniel
At the 3800mm end I wanted a open patio door of 3000mm. But he is saying that he has to put in 300mm to support the beam at both sides.
But surely - 3800 - 300 - 300 equals a 3200mm gap. but he is saying that he needs 300mm away from the side walls?
is this right?
Daniel