Waste factor is the amount of boards that will be added to the total based on your required waste factor.
Calculate amount of clap clapboard siding.
All siding is installed with an overlap to create a weather tight seal so you will lose about 1 5 inches in coverage per panel.
Clapboard overview illustration by j.
To estimate the amount of stock needed for a siding job measure the height and width of all the walls to get the total square footage of the surface area.
It s dimensions will be 11 5 h x 144 l.
Square footage of wall is the wall area minus wall openings.
Then deduct the area of all the doors and windows.
This means that the panel is really only 10 h x 144 l.
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The calculator will also determine the overlap and exposure of each board find the total number of boards needed and is perfect for estimating cedar wood siding or hardie fiber lap siding.
To find the number of squares of siding needed for an installation measure each walls width and height in feet.
Measure the width and height of windows doors and any other areas that will not be covered with siding.
Multiply the width and height to get the area of the wall in square feet.
To give you an idea of what goes into estimate siding amounts consider an average panel of siding.
Amount of siding to cover the wall is the amount of boards needed to cover the wall.
Lap siding coverage chart.
Divide the square footage by 100 to get the number of squares needed for the wall.
Wood clapboard siding costs zip code sq.
Total amount of siding needed the results from 2 and 3.
Optionally enter the number of doors and windows to refine your estimate.
Multiply height by width for each area and add to get total square footage not covered with siding.