Disclaimer
The planner calculates what is geometrically needed to interrupt a line of sight. That is useful, but it is only one part of a real-world decision.
Geometric estimates based on your measurements
Every result — minimum height, recommended height, width, coverage, protected area and suggested positions — is derived from the numbers you enter. If a measurement is approximate, the result is approximate too. A small error in an observer’s height or distance can change the required screen height noticeably, especially when the screen is far from the private area.
Simplifying assumptions
- Sightlines are straight lines between points; the planner checks the corners of the private area and the ends of each window or balcony you define.
- Barriers are straight, vertical and fully opaque up to their height. Real screens may have gaps, slats or see-through sections, and hedges and trees are rarely uniformly dense, change with the seasons and take years to grow.
- A window viewpoint is kept within its opening. Viewers standing further back inside a room, on furniture, or using optical devices are not modeled.
- Ground between the points is not modeled beyond the elevations you enter; walls, sheds, trees and other obstacles not entered are ignored.
- Heights to hide are simplified (for example “seated adults ≈ 1.2 m”). Adjust them to your situation.
The optional safety margin adds extra height above the calculated minimum to allow for some of these uncertainties. It is not a guarantee.
Not a substitute for
- checking sightlines physically on site, for example with a pole and a helper;
- professional measurement or surveying;
- structural engineering (wind loads, foundations and fixings of tall screens and fences);
- architectural or landscape design advice;
- local laws, building codes, planning and zoning rules, permits, homeowners’ or condominium association rules, and agreements with neighbors.
No legal information about permitted heights
The planner may report that a certain height is geometrically required. That is not a statement that such a height is allowed. Permitted heights and setbacks for fences, screens and hedges vary widely by country and municipality. Check local rules before building.
No guarantee of privacy
The service cannot guarantee that a space will be private. People move, viewpoints change, vegetation grows or thins, and neighboring buildings change over time.
See also the terms of use and privacy policy.