I just finished fixing some skylights on my parent's house. They had the bubble type that started leaking after the roof was resurfaced. After investigating it carefully, it became apparent that when the roof was resurfaced, the edges of the skylight were covered with a sealant. (To help prevent leaks perhaps?)The problem was that this coating sealed up the weep slots along the perimeter of the aluminum frame. These slots are key to proper operation of the skylight. The skylight dome isn't sealed to the aluminum frame. The frame is designed with channels that direct any water that manages to flow between the bubble and the frame back out through weep holes.Make sure those weep holes are clear! They can be blocked by dirt, ice, or a well-intentioned roofer.
The cost to replace your entire unit is around $4,000. That expense can range from $2,500 to $5,900, depending on the type and brand of furnace you choose. Brands particularly have an impact on that price. A Goodman electric furnace, will only cost about $2,100 for the unit and labor. On the other hand, a Trane oil furnace may cost up to $9,000 all things considered. Our Furnace Installation Cost Guide can give you a better idea on both the general cost and the differences for brands like Amana, Bryant, Coleman, and others. The brand also plays into the repair cost for your furnace. Especially the prices of individual parts can change; a York heat exchanger, for example, can cost up to $1,900, while the same component from Heil will cost as little as $400.