Window Trim Before Or After Siding

Trim boards that sit on top the siding.

Window trim before or after siding.

The head flashing is installed in a bed of caulking onto the top of the window frame. We need air circulation behind these boards and the opening acts as a water exit. Just getting simple installing siding can make the job go really fast. There is siding that simply clips into place which eliminates the stressful need to nail in every single piece.

If the trim is being applied over the hardi panels. In the old days the builder would install the trim bring the siding up to it and caulk the corner. We used pressure treated 2 x 4 s for the trim around the windows and the doorway and then we had to create trim corners for both the inside and the outside corners like the ones in the picture above. That means some of the new siding could have to be removed and later reinstalled which could add to the cost.

If we installed the trim after the siding we would have had to caulk a ton to fill in for the different levels the layered siding creates. Before you start installing or buying anything you should always measure. Available in a variety of colors and styles vinyl siding is widely used and favored by many contractors and do it yourselfers for its durability. Exterior window trim on vinyl siding if your home has vinyl siding and you d like to add vinyl window trim you will first need to remove the existing siding and j channel from around the windows.

Installing vinyl siding around windows. The wrb is lapped over the head flashing or the flashing is taped. Instruction on how to install exterior 2x4 trim around a new or old window. The job goes by fast and you are less tired because there is less work in installing it.

If you re hiring the same contractor to do both jobs and siding is the priority ask if he or she will give you free window capping if your windows need capped when the time comes to install your new windows.