I had a bump-out fireplace at home. Winter time, it is horrible...wind is coming from the fireplace into the family room. I have taken down all the siding (outside) and ensured that there were insulation behind the plywood, and also used the Great Stuff insulation to fill in whatever gap that I can find, and add additional insulation at the roofing (bump-out). but the condition only improved a little. This spring/summer, I am considering to take down the plywood and roofing and re-do the whole insulation. Anyone have any experience that I may need to be aware? or is there anyone who have SAME problem/experience on the fireplace and have it resolved? Will using the bricks to seal off the base on the bump-out unit help at all?

I'm installing a product called DensShield in a shower stall----it's an alternative to the usual cement tile backer board. I have a 4'x8' sheet that I will cut to fit the larger inside wall of the shower stall. The piece, after its cut, will be about 46" wide by the full 8' tall. The narrower end-walls are already done. Is there a trick to measuring the angles of the side walls and bottom before I cut the sheet so I won't end up having any large gaps afterwards? I know the end walls and lip of the shower stall are not quite level. The sheet is 5/8" and VERY heavy so I need to cut it once and set it in place and screw it in. I've thought of just taking three measurements of the inside wall of the shower stall (bottom, middle, top) but I don't think that will take into account the angles of the side walls and bottom. Is there a trick to doing this? Thanks for any ideas. [URL=http://img9.imageshack.us/i/dscn1423n.jpg/][IMG]http://img9.imageshack.us/img9/4017/dscn1423n.jpg[/IMG][/URL]