Sloping window sills / Discussions

...window and frame work, it looks like there might be caulking around windows and door on the outside. Now I'm wondering if there is any insulation around any of the  windows and doors that were all installed about ten years ago. My question is should I stuff the gaps with rockwool and seal it with tape on the inside?  A...

...windows are south facing. Here is our page on how to install windows which may help on a few fronts, not just the rough opening. Proper window installation for efficiency and durability is a lot about stopping air leaks and preventing water leaks. That means air seals around the exterior of windows and sloping window s...