The Diagnostic Tool

Know The Space.Design The Right System.

Before you place a single pipe, you need to understand the floor. RadonSketch's Diagnostic tool lets you sketch, trace, and document any property layout — right on site, right on your phone.

No graph paper. No guesswork. No redrawing it later for the report.

Diagnostic tool layout sketchDiagnostic tool layout sketch

Why It Matters

Most Mitigation Jobs Are Designed From Memory. That's A Problem.

Every property is different. A slab here, a crawlspace there, a half-basement with a drain tile you didn't notice until you started drilling. When your site assessment lives on a paper napkin or a mental note, things get missed — and missed things become callbacks.

On a paper napkinBefore
"sump near the back? — check on site"
In RadonSketchAfter
The same property drawn clean in RadonSketch — rooms labelled and suction points numbered

Built for the field

Everything you need to capture any floor plan. Nothing you don't.

Draw your way

Use freehand strokes for organic layouts, the Path tool for straight-edged rooms, or drop pre-built shapes for standard spaces.

FreehandPath toolPre-built shape

Lines that know where to go

When your line gets close to another endpoint, it snaps and locks automatically. No jagged corners. No open gaps.

Snaps & locks

Every version saved. Always.

Changed your mind about the layout? Every version is auto-saved with a timestamp. Name your versions, restore any previous one.

v3 — Final2:14 PM

Drawn once. Used everywhere.

Your floor plan feeds into your system design, appears in your compliance documentation, and is included in the final PDF report.

How it works

From blank canvas to professional documentation in minutes.

Start a diagnostic — choose foundation
Sketch the floor plan
Label and annotate with points
Placing pre-built shapes on the plan
Saved pages, ready for the report
1

Start your diagnostic

Open a project, tap Diagnostic, choose the foundation type, then pick a drawing tool right on the canvas.

2

Sketch it freehand

Draw the layout freehand as you walk the property — your strokes auto-close into clean, editable rooms.

3

Trace with the path tool

Tap to drop points and snap straight-edged paths — ideal for square rooms, walls, and slab edges.

4

Close rooms with shapes

Use the polygon tool and pre-built shapes to enclose spaces exactly as you see them on site.

5

Save, version, and hand off

Every page auto-saves with a timestamp — set one as Primary and it flows straight into your PDF report.

Pre-built shapes

Pre-built shapes for the spaces you see most

Rectangles, squares, L-shapes, circles, doors, windows — drop them onto the canvas with a tap. Resize, rotate, and connect them to match exactly what you see.

  • Tap to drop, drag a handle to resize
  • Rotate and mirror to match orientation
  • Shapes connect to freehand lines seamlessly
The shape palette open in RadonSketch, placing a square and triangle on the canvas

Smart eraser

An eraser that understands your drawing

The vector eraser removes only what you mean to erase. Drag it along a line and it slices cleanly — it won't erase component labels or annotation text.

  • Slices a single line, not the whole drawing
  • Labels and annotations are protected
The vector eraser slicing cleanly along a drawn line in RadonSketch

Version history

Works as well on your 5th version as your first

Auto-save runs in the background. Name your versions — "Before sealing", "Final layout" — and jump back to any of them instantly.

  • Automatic timestamped snapshots
  • Restore any previous version in one tap
Drawing pages with version history and a Primary marker

SUCCESS STORIES

Testimonial

“They're always responsive and knowledgeable, and they've helped us get the most out of the platform”

(4.5 Average rating)

“RadonSketch has completely streamlined my workflow. What used to take me hours with pen and paper is now done in minutes. The built-in ANSI/AARST compliance checks are a game changer—no more second-guessing whether my reports will pass inspection. Highly recommend for anyone in the radon mitigation industry.”

Daniel R. (Certified Radon Professional)

“As a one-person radon testing business, I needed a tool that would help me stay organized without a steep learning curve. RadonSketch is incredibly intuitive, and I love how it generates materials lists instantly. It saves me time and helps me look more professional with my clients.”

Megan L. (Small Business Owner)

“This app has become an essential part of my job. I can design, validate, and export diagrams on site, right from my phone. The ability to store records for compliance has saved me more than once during audits. Honestly, I don’t know how I managed before RadonSketch.”

Carlos M. (Mitigation Contractor)

“I work with multiple radon mitigators, and RadonSketch has made it so much easier to keep projects consistent across the board. The reporting features are professional, clean, and customizable. Clients love the clear documentation, and I love the peace of mind knowing we’re compliant.”

Sarah T. (Environmental Consultant)

“The ‘field-to-digital’ concept is brilliant. No more messy sketches in notebooks—everything is neatly stored, exportable, and backed up. The Pro Plan features like PDF branding and full export tools have more than paid for themselves with how much time I save.”

James K. (Radon Measurement Specialist)

“We run a larger mitigation company, and RadonSketch’s enterprise features are worth every penny. The team dashboard and multi-user access make it easy to track jobs and standardize work across crews. It has improved our efficiency and professionalism tremendously.”

Olivia H. (Team Manager)

“RadonSketch has completely streamlined my workflow. What used to take me hours with pen and paper is now done in minutes. The built-in ANSI/AARST compliance checks are a game changer—no more second-guessing whether my reports will pass inspection. Highly recommend for anyone in the radon mitigation industry.”

Daniel R. (Certified Radon Professional)

“As a one-person radon testing business, I needed a tool that would help me stay organized without a steep learning curve. RadonSketch is incredibly intuitive, and I love how it generates materials lists instantly. It saves me time and helps me look more professional with my clients.”

Megan L. (Small Business Owner)

“This app has become an essential part of my job. I can design, validate, and export diagrams on site, right from my phone. The ability to store records for compliance has saved me more than once during audits. Honestly, I don’t know how I managed before RadonSketch.”

Carlos M. (Mitigation Contractor)

“I work with multiple radon mitigators, and RadonSketch has made it so much easier to keep projects consistent across the board. The reporting features are professional, clean, and customizable. Clients love the clear documentation, and I love the peace of mind knowing we’re compliant.”

Sarah T. (Environmental Consultant)

“The ‘field-to-digital’ concept is brilliant. No more messy sketches in notebooks—everything is neatly stored, exportable, and backed up. The Pro Plan features like PDF branding and full export tools have more than paid for themselves with how much time I save.”

James K. (Radon Measurement Specialist)

“We run a larger mitigation company, and RadonSketch’s enterprise features are worth every penny. The team dashboard and multi-user access make it easy to track jobs and standardize work across crews. It has improved our efficiency and professionalism tremendously.”

Olivia H. (Team Manager)

Ready to Transform Your Radon Mitigation Business?

Stop relying on outdated methods and embrace the future of radon mitigation design. Work smarter, not harder.

Helping you stay compliant, look professional, andsave time—every job, every report.

support@radonsketch.com

Copyright RadonSketch®  | Designed by radon professionals, for radon professionals.Idea by Chad 🤝 Conceptualised by SolGuruz