Reviewed for Flex Version 3.0.3
Estimated Read Time: 8 minutes
In This Article You’ll Learn
What Flooring Areas are
How Flooring Areas differ from Rooms
How to generate Flooring Areas from rooms
How to create Flooring Areas manually
How to merge multiple Flooring Areas
How to divide Flooring Areas
How to review and edit Flooring Areas
How Flex calculates flooring quantities
How to troubleshoot common flooring issues
Overview
Flooring Areas represent how flooring materials will actually be installed, not simply how a building is divided into rooms.
Although RENDR can instantly generate Flooring Areas from the rooms in your floor plan, the actual flooring scope may be different.
For example:
LVP may run continuously through a kitchen, dining room, hallway, and living room.
One room may contain multiple flooring materials.
A flooring boundary may need to extend across an interior wall or room boundary.
A porch, deck, or other area may require flooring that doesn’t correspond to a detected room.
Flex lets you start with the geometry RENDR already captured and quickly turn it into the flooring scope you actually need.
RENDR Principle
Rooms describe spaces. Flooring Areas describe the flooring installation.
Generate Flooring Areas from your rooms, then merge, divide, or edit them to match the actual scope of work.
Rooms vs. Flooring Areas
Rooms | Flooring Areas |
Created from enclosed wall geometry | Generated from rooms or created manually |
Represent physical spaces | Represent flooring installations |
Used for room organization and room-based parameters | Used for flooring quantities |
One room typically represents one physical space | One Flooring Area can span multiple rooms |
A room remains a room even when flooring changes | One room can contain multiple Flooring Areas |
This distinction is important. Your floor plan might contain five rooms while the flooring project only contains two continuous flooring installations.
Before You Begin
Before generating Flooring Areas:
✔ Finish major wall edits.
✔ Confirm your rooms are detected correctly.
✔ Add any required Room Dividers.
✔ Review the floor plan for missing or disconnected walls.
RENDR uses the floor plan geometry to generate your starting Flooring Areas. Getting the layout right first makes the flooring workflow faster.
Generating Flooring Areas
For most projects, start by generating Flooring Areas from your existing rooms rather than drawing every area manually.
To generate Flooring Areas:
Enter Flooring Mode.
Choose the option to generate or regenerate Flooring Areas.
Confirm the action if prompted.
Review the generated Flooring Areas.
Each enclosed room initially becomes its own Flooring Area.
From there, you can quickly modify the generated areas to match the actual flooring scope.
Important
Regenerating Flooring Areas rebuilds the flooring layout from the current room geometry and can replace flooring changes you’ve already made.
Review your existing flooring before regenerating.
Merging Flooring Areas
When the same flooring continues through multiple spaces, use Merge Areas instead of manually redrawing one large Flooring Area.
For example, imagine LVP will run continuously through the:
Kitchen → Dining Room → Hallway → Living Room
After generating Flooring Areas, simply merge those areas into one continuous flooring scope.
On iOS:
Enter Flooring Mode.
Select Merge Areas.
Tap the first Flooring Area.
Tap the adjacent Flooring Area you want to merge with it.
Continue tapping additional adjacent areas to merge them into the same Flooring Area.
The first area selected is the area that remains, retaining its name and other identifying information.
The merged area remains selected, allowing you to continue tapping adjacent areas and build a larger continuous flooring area without restarting the tool.
Example
LVP throughout the first floor?
Generate the Flooring Areas → select Merge Areas → tap the areas receiving LVP → watch them become one continuous Flooring Area.
This makes it fast to turn a room-by-room floor plan into the actual flooring scope.
Dividing Flooring Areas
Sometimes the opposite is true: one room or generated Flooring Area needs multiple flooring installations.
Use Floor Cut to divide an existing Flooring Area.
On iOS, Floor Cut now supports both straight and multi-segment cuts.
With Floor Cut active:
Press on the boundary of the Flooring Area.
Drag to draw the cut.
Release on another boundary to complete a straight cut.
Or release inside the Flooring Area to establish a segment.
Continue from that endpoint to create additional segments.
Finish the cut by reaching the Flooring Area boundary.
This makes it possible to create cuts that turn corners rather than requiring every division to be a single straight line.
rendr-ios-feature-inventory-since-3.0.0.html
Use Floor Cut when:
One room receives multiple flooring materials.
Only part of a room is being replaced.
A flooring transition doesn’t follow the room boundary.
You need an irregular or multi-segment flooring boundary.
For complete instructions, see Editing, Dividing & Excluding Flooring Areas.
Creating a Flooring Area Manually
You can also create a Flooring Area manually when there isn’t an existing generated area that makes sense as your starting point.
To create a Flooring Area manually:
Enter Flooring Mode.
Select Add Floor.
Click or tap each corner of the flooring boundary.
Continue placing vertices around the desired area.
Close the polygon to complete the Flooring Area.
Manual Flooring Areas are particularly useful for areas that don’t correspond to an existing room.
For most normal interior flooring workflows, however, it may be faster to generate from rooms first and then merge, divide, or adjust the generated areas.
Selecting and Editing a Flooring Area
Select a Flooring Area to review its geometry and flooring information.
Depending on your platform and the selected area, you can:
Adjust flooring vertices
Modify its boundary
Rename the Flooring Area
Divide the area
Merge it with another area
Review flooring quantities
On iOS, selecting a Flooring Area now also displays a dimension along each qualifying edge of its boundary, making it easier to understand and adjust the shape without leaving Flooring Mode. Very short edges under 0.2 m are omitted from this display.
Reviewing Flooring Quantities
As you change the flooring geometry, RENDR recalculates the flooring quantities.
Depending on the selected Flooring Area, the Attributes panel can show information including:
Flooring name
Gross area
Excluded area
Net install area
This makes Flooring Areas useful as an interactive takeoff workflow: change the flooring scope and immediately review the resulting quantity.
Flooring Areas and Interior Walls
Flooring installations don’t always stop at every interior wall.
On iOS, a Flooring Area can now extend across interior partitions, interior stubs, island walls, and Room Dividers. The exterior shell continues to constrain the flooring boundary.
When an interior wall falls inside a Flooring Area, RENDR accounts for its footprint rather than treating the space occupied by the wall as flooring.
These deductions appear in the flooring calculation and are reflected visually in the flooring display.
This is particularly useful when creating continuous flooring that spans multiple rooms.
How Flooring Responds to Wall Changes
Flooring geometry can remain associated with surrounding plan geometry.
After significant wall edits:
Review your Flooring Areas.
Confirm their boundaries still represent the intended installation.
Check the resulting quantities.
Regenerate Flooring Areas only if you actually want to rebuild them from the current room geometry.
Don’t automatically regenerate after every wall edit. If you’ve already merged, divided, or manually adjusted your Flooring Areas, regeneration can replace that work.
Understanding Flooring Exclusions
Not every part of the flooring boundary necessarily represents installable flooring.
Depending on your platform and workflow, flooring calculations can account for excluded portions of an area.
These may include permanent features or geometry occupying space within the Flooring Area.
For detailed exclusion workflows, see Editing, Dividing & Excluding Flooring Areas.
Reviewing Flooring Before Estimating
Before using your flooring quantities downstream, verify:
Review Item | Why It Matters |
Every required space has flooring | Prevents missing quantities |
Continuous flooring areas are merged appropriately | Produces the intended flooring scope |
Flooring transitions are in the correct locations | Separates materials correctly |
Flooring boundaries match the installation | Improves quantity accuracy |
Exclusions are correct | Prevents counting non-floorable area |
Flooring quantities match the intended scope | Provides a final takeoff check |
Troubleshooting
My Flooring Areas Didn’t Generate
First verify that your Rooms are being detected correctly.
Check for:
Missing or disconnected walls
Open wall endpoints
Missing Room Dividers
Incorrect room geometry
Correct the underlying plan geometry before regenerating Flooring Areas
I Have Several Rooms That All Receive the Same Flooring
You don’t need to manually redraw the entire area.
Generate Flooring Areas from the rooms, then use Merge Areas to combine the adjacent areas into the continuous flooring installation.
One Room Needs Two Different Flooring Materials
Use Floor Cut to divide the Flooring Area at the flooring transition.
For an irregular transition, iOS supports multi-segment cuts that can turn through the Flooring Area.
My Flooring Quantity Changed After Merging Areas
The resulting quantity reflects the geometry of the newly merged Flooring Area, including applicable deductions.
Review the merged boundary and its flooring information in Attributes.
My Flooring Changed After Regenerating
Regeneration rebuilds Flooring Areas from the current room geometry.
If you’ve already customized your Flooring Areas through merging, cutting, or manual editing, avoid regenerating unless you intend to replace the current flooring layout.
Best Practices
💡 Generate first, customize second. Let RENDR create the initial Flooring Areas from the floor plan, then modify them to represent the installation.
💡 Merge continuous flooring. If one material runs through several rooms, merge those areas rather than rebuilding the entire boundary manually.
💡 Cut where materials change. Divide an existing area when a flooring transition occurs inside a room.
💡 Watch the quantities as you work. Flooring calculations update as the flooring scope changes.
💡 Regenerate intentionally. Regeneration can replace your customized flooring layout.
💡 Review before estimating. Confirm the final flooring geometry and quantities before using them downstream.
Frequently Asked Questions
Can one Flooring Area span multiple rooms?
Yes. Generate the individual areas and use Merge Areas to combine adjacent Flooring Areas where the same installation continues.
Can one room contain multiple Flooring Areas?
Yes. Use Floor Cut or other supported editing tools to represent multiple flooring installations within a room.
Can I create a Flooring Area manually?
Yes. Use Add Floor when you need an area that doesn’t correspond well to existing room geometry.
Can I merge more than two Flooring Areas?
Yes on iOS. After the first merge, the resulting Flooring Area remains selected, allowing you to continue merging additional adjacent areas.
Can a Flooring Area extend across an interior wall?
Yes on iOS. Flooring vertices can cross interior walls while the exterior shell continues to constrain the Flooring Area. Applicable interior-wall footprints are deducted from the flooring calculation.
When should I regenerate Flooring Areas?
Regenerate when the room layout has changed enough that you want to rebuild the flooring layout from the detected Rooms. Don’t regenerate simply to make a small flooring adjustment.
Related Articles
Editing, Dividing & Excluding Flooring Areas
Merging Flooring Areas
Working with Rooms
Using the Attributes Panel
Measurements & Dimensions
Editing Walls
Exporting Your Floor Plan







