DIY Fence Part 1: Math Formula For Board-on-Board or Louvered Fence or Fence Gate


When building a privacy fence or fence gate, many people simply estimate the amount of overlap and number of boards needed. Sometimes it is not easy to estimate and you may have done it incorrectly. I have not seen anyone providing an exact equation for the exact overlap in terms of the total length and the number of boards, therefore I decided to work it out myself.  I will provide and explain that equation here in order to save you time and effort.

Assume the gate width is W, the board width is B, and the overlap amount is X.  

The number of boards is N, and the space between boards is S.  

X = (NB-W)/(N-1)

S = B-2X

So, once you know exactly the amount of overlap, you can simply lay and nail one board at a time. I have not seen this formula shown or explained anywhere else, so make sure you like this video and subscribe to my channel because my videos always provide original and useful information.

https://www.facebook.com/DrDavidZhang/posts/5820030591370359