A deck on sloping ground
The garden falls away, so every post is a different length.
- Each post cut to its own length in the cut list
- Steps counted from the real drop at the stairs
- Guard and planning height checked at the low side
What it handles
The awkward builds, worked out in 3D.
These are the jobs people ask about most on DIY and trade forums. Each one opens in the free tool already set up, so you can change the sizes and watch the list follow.
An L-shaped deck
Wrapping a corner of the house leaves joists with nothing to sit on.
- A beam added along the inside of the cut
- Every joist bears on a beam at both ends
- Spans checked at the worst real gap
A garden room with a store
An office plus somewhere to lock the mower, under one roof.
- Divider wall framed and counted
- Store keeps its own door
- Main room never drops below 2 m wide
A covered porch and a side door
The door faces the fence, or you want shelter in front of it.
- Door on the front, left or right wall
- Porch posts, roof and decking in the list
- Openings never overlap or sit in a corner
What goes inside the wall
Forum threads argue about membranes, insulation and battens.
- Seven layers drawn in order, outside to inside
- Each layer tied to a line you buy
- Layers you leave out are shown crossed out
Concrete or timber posts
UK fences often use slotted concrete posts, US fences use timber.
- Post type set by your country, changeable
- Gravel boards and concrete counted to match
- Gate end shown in the 3D and the pack
A material take-off to local building practice, not a structural design or a building-control approval.
Read the build questions answered