Jackie P

Hi, I am just about to start building a new home for the first time and will be using siberian larch cladding. We plan to fit it vertically but dont know whether we should use grade A or B (there is quite a bit of difference in the cost). I like the look of the knots but worry that I may end up with a lot of holes?? Has anyone used the grade B to clad their house and have there been any issues with it. Thank you in anticipation. Jackie