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Topic by Beginningwoodworker posted 06-07-2011 03:12 AM 5754 views 0 times favorited 5 replies Add to Favorites Watch
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Beginningwoodworker

204 posts in 3851 days

06-07-2011 03:12 AM

I am thinking about install lap siding on the outside of 10×12 shop. I am wondering how do I figure how much siding do I need?

-- CJIII



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Grandpa

139 posts in 3192 days

06-07-2011 04:27 AM

What kind of siding are you using? I go to a real lumber yard. This is not a Lowes or Home Depot. They have people that help you. I tell them I need siding for a 10×12 building with 8 feet tall walls and they can tell me you need X number of pieces at 12 feet long or you need X number of 4×8 sheets. Otherwise you need to calculate the sq ft of wall to be covered and decide how much coverage you would expect to get from each piece then you can calculate it yourself. Most products need about 10% overage for waste.

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Beginningwoodworker

204 posts in 3851 days

06-07-2011 04:32 AM

ok I will be using LP lap siding 1×8x12 feet long.

-- CJIII

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Grandpa

139 posts in 3192 days

06-07-2011 05:10 AM

Well that usually covers 7” verticle. That is what things such as Hardie board comes in. If the wall is 8 feet tall then it is 96” tall and 7 inches will require 14 planks to go from the bottom to the top of the wall. The 12 foot planks will go from corner to corner. You will need 14 planks per side. 14 planks x 4 walls = 56 planks for the walls. If you have gables to figure then you take the max height and the max width, multiply it like a rectangle. this would give you sq inches of space if you do this in inches. If you have 2 gables then you use this information. If you have only 1 gable divide this by 2. Now we know the 7 inch by 144 inch plank will cover 1008sq inches. if that gable is 10 ft wide and 3 feet tall then you would multiply 120×36=4320 sq inches of area. IF there is 2 gables then we will used this. divide the 4320 by the 1008 and find that it will take 4.28 planks to cover this area. On your building I would call the 24” waste on the 10 ft wall. On the gables you will probably need 1 extra plank. Of course you will need to adjust the height of the gable for your building. calculate it the same. If you have windows and doors this will not make much difference unless you have a large door such as an overhead door that is 7 or 8 feet tall and 8 or 9 ft wide. then you would need to take this out of the mix. The 24” drops could be used if you have a small area on each side of the door. This would save a good deal of material. That is about all I can say with the information given. Thanks for giving me the chance to help.

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jerry121

2 posts in 1189 days

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Jett855

1 post in 1072 days

03-18-2017 09:23 AM

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