RoomPlot for fire alarm installers

Zone plans with real detector coverage.

Draw a fire-alarm zone plan on your iPhone, drop detectors that show the area they actually cover, and export a branded plan with the proper title banner.

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Why Fire alarm installers use RoomPlot

The features that matter to your job.

  • Fire Alarm Zone Plan banner

    A dedicated red "Fire Alarm Zone Plan" title banner, multi-floor support and zone labels with automatic areas - the drawing the AHJ expects.

  • A full fire-safety symbol library

    Smoke and heat detectors, manual call points, sounders, visual alarm devices, the fire-alarm panel, escape-route arrows and emergency exits - all as clean vector symbols.

  • Detector coverage on the plan

    Place a detector and it draws its coverage circle - smoke about 7.5 m, heat about 5.3 m by default (BS 5839 / NFPA 72 style nominal radii), editable from 1 to 15 m.

  • Fire/Security report preset

    One tap builds an A4 report with the symbol legend, North marker and area zoning, and forces the coverage overlay on across every plan page.

Guides for your trade

Fire alarm installers guides & how-tos.

Step-by-step guides written for your work - from the first measurement to a client-ready export.

Fire Alarm How to Create a Fire Alarm Zone Plan Build a BS 5839-1:2025 compliant fire alarm zone plan on iPhone: coloured zones, fire symbols, detector coverage circles, and branded PDF export. 12 min read Fire Alarm How to Create a Fire Compartmentation Plan How to draw a fire compartmentation plan on iPhone or iPad: rated compartment lines, FD30/FD60 doors, escape routes, plus the UK rules behind them. 6 min read Fire Alarm Floor Plans for HMO Fire Safety How to produce an HMO fire safety floor plan on your iPhone - protected escape routes, interlinked smoke and heat detectors, FD30 fire doors, and a council-ready PDF. 7 min read Fire Alarm How to Create a Fire Escape Plan Draw a fire escape plan to ISO 23601 on iPhone or iPad: green ISO 7010 routes, You Are Here marker, assembly point, and a postable A3 PDF export. 7 min read Fire Alarm Smoke Detector Coverage and Spacing on a Plan Smoke detector spacing on a floor plan: BS 5839-1 7.5 m smoke / 5.3 m heat radii, NFPA 72 rules, HMO grades, and how to prove coverage in RoomPlot. 6 min read
All Fire alarm installers guides

Free tools for your trade

Fire alarm installers calculators & tools.

Free, instant, no sign-up - the working maths of your trade, right in the browser. Every one of these is also built into the RoomPlot app.

Smoke & Heat Detector Coverage Floor area to the number of detectors (BS 5839-1). Detector Spacing Check Test detector grid spacing against BS 5839-1 limits. Fire Alarm Battery Calculator Standby battery Ah for a panel per BS 5839-1. Cable Voltage Drop Calculator Loop voltage drop on 12/24 V device circuits. Alarm Sound Level Calculator Sounder dB(A) heard at a distance vs BS 5839 targets. Fire Extinguisher Calculator Extinguishers needed for a floor area (BS 5306-8).
All free tools

RoomPlot is also built for: Estate agents Surveyors Security & CCTV Interior designers Property managers Renovation & building