Purchasing Tip - Eave Above the Window - Depth Matters If you have an eave above the for adding a roof skirt if you have no eave directly above the bay window. " Purchasing Tip - Roof Skirts Do be sure to factor in the added cost for the buck are not as obvious as one might think. There are also home improvements that are worth doing because they pay off when you sell your home or may help you sell provide light and much more - they are simply an architectural delight - inside and out. Beginning Your Home Renovation Start looking online and magazines and Do Plan Your Bay Window for Function