You can avoid cutting the rabbit in the back of the trim by using shims under the outside of the trim at the nailing points.īy using trim around the windows, it is much easier to change out the windows if the need arises.Īwesome. Before painting, I caulked everything really well, except the flashing, of course. The T1-11 was cut to fit with an 1/8" gap around the window. I flashed over the top trim before installing the field felt paper. 12" strips of felt paper went over the top and side flanges and under the bottom flange, the edges against the window were sealed with silicone, then the trim was put on. I built this cabin 12 years ago using T1-11 attached to the studs over 30# felt. Mine are wood framed and install like Don stated, if I had vinyl windows with a nailer flange I'd do 'em like t_m_t said. But the trim board has to have a small groove cut for the window flange or the trim will set tilted and look funny.ĭepends on the window. Otherwise, cut hole after T1-11 is installed and insert window on the outside, nail in place and trim. Pain int he ass, but its the way the industry does it. Usually, windows in first, thenm cut T1-11 out to fit around the window. Ideally the T1-11 would be installed over the OSB and felt with the panel edges of the OSB and T1-11 overlapping different studs. If the T1-11 deteriorates as it sometimes does down along the lower edge much of the structural integrity of the wall is lost. In fact that is the potential problem with not using a standard sheathing, like OSB, followed by a weather resistant barrier, like #15 building felt, followed by the cosmetic outer paneling or siding. Then you have to hope that the T1-11 does not delaminate / deteriorate and let water in. All you can do is use sufficient caulk and the best caulk you can find pure silicone is best. Installing the T1-11 as the only exterior sheathing and finish makes it impossible to flash the windows properly.
Install the T1-11, then cut the window holes when you are ready to install them. Would it be best to install windows first then cut the siding around them later or just install the siding and cut to fit the window opening then slap the windows over the top? Or some other way? I would love to just get the siding up then worry about the windows later but don't know if that's just asking for trouble leakwise. I am going to be using T1-11 siding directly over the studs, no sheathing. I'm looking for opinions on when to install my windows. I'm working on a cabin (pics will follow when I get them). Small Cabin Forum / Cabin Construction / Question on when to install windows Forums - Register/Sign Up - Reply - Search - Statistics.