Doing some calculations: New Roof: Timberline shingle 73lb / 33.3 ft sq = 2.21 lb/sq ft ([url=http://www.homedepot.com/h_d1/N-5yc1v/R-100658133/h_d2/ProductDisplay?catalogId=10053&langId=-1&keyword=timberline&storeId=10051#.UBgC46NdCXE]Lifetime Timberline Natural Shadow Weathered Wood Shingles-0603737 at The Home Depot[/url]) 3/4 plywood = 2.3 lb sq ft ([url=http://wiki.answers.com/Q/What_is_weight_per_square_foot_of_Plywood]What is weight per square foot of Plywood[/url]) 2000 sq ft roof x (2.3 lbs sq ft plywood + 2.21 Shingle) = 9020 lbs Original Roof: Wet Cedar shakes weigh 3lb/ sq ft x 2000 sq ft = 6000 lb Dry cedar shakes weigh 2 lbs/ sq ft = 4000 Lb Weight cedar shakes: [url=http://www.roofkey.com/cedar-shakes-and-shingles.html]Cedar Shakes and Shingles are ma[/url] So I am wondering if the additional weight, equal to 1-1/2 small cars, is going to be a problem for my house? Should I have gone with 5/8 plywood and 20 yr shingles which weigh 10lb less per pack.

Hello, First post on this forum. Recently purchased a 57 year old ranch in Rutland VT. The roof is in need of replacement. Roof is fairly straight forward with a single pitch from the ridge to the front (with the exception of a 9 X 4 foot overhang above the door. Pitch in the front is a hair less than 4/12 (about 7.5/24 from my measurements). 15 feet long. The back has a smiliar pitch to the front for the first ten feet, then it flattens out to a 2/12 pitch for the next 25 feet. There is a small chiminy on the back flatter part that is 15.5"x15.5" that is not being used, so I am of the mindset to remove that prior to new roofing. On the steeper part of the back there is one roof turbine that I would also like to get rid of (plans to install ridge venting). The front has a furnace pipe and a sewer vent pipe coming out. I have looked into corrugated and standing seam as well as shingle for the project. What I am currently thinking (and would love input on) is... Arcitectural shingles on the front and the back steeper section, and transition into probably corrugated (possibly standing seam) for the 2/12 section. I think I would likely go with water/ice shield under the whole thing, and their should be good ventilation with the two gable vents and ridge vent. We do get a bit of snow and ice up here in VT, additionally highs are usually mid to high 80s in the summer and lows can be down to around -15 or so in the winter (usually closer to 10 or so though). Hopefully the pictures I have attached show up and may be helpful... Let me know if you have any questions or need any more information/pictures. Thanks!