When it comes to any masonry opening resizes, it is vital to ensure the dimensions are to the correct mm; too big & you end up with an ugly large caulking joint, and too small and well it won’t fit!
If the above is the case, this would pose a problem for the installation of the door or windows. Because to change at short notice, it does not allow the correct amount of time to cure the masonry; only true professional are capable of executing it properly especially with large openings that require specialist supports.
The next thing to consider is aesthetics; of course at the end of your project you want it to look like it’s been there for the entire time your house was built, this takes an artist to execute correctly.
Choose Mace Masonry – the art of bricklaying – to do all you window/door resizes!