Fences and drainage

Plan a fence's materials and work out how much water your gutters and downspouts need to carry.

Guides and calculators

Fence Calculator: Posts, Rails and Pickets

Count posts, rails and pickets for a wood fence from its length and spacing, with honest notes on where rules of thumb stop and local rules begin.

2 min read Fences and drainage

Gutter and Downspout Calculator: The Rainfall Choice Nobody Explains

Work out peak gutter flow and downspouts from roof area and rainfall using the plumbing code's equation, and see how much your rainfall choice matters.

3 min read