Tile-Setting Lippage Control with Breakaway Spacing Tabs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lippage control devices for tile installations face challenges in removing components from grout joints without damaging tiles, especially in thin grout lines, and often require cumbersome methods or special tools, leading to increased risk of tile damage.
Innovation Solution
A tile-setting lippage and spacing control system using spacing tabs with a removable design that applies clamping force to hold tiles level during mortar setting, allowing easy removal by applying a sharp oblique force, and can be reused as standalone spacers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If lippage control devices are used to hold tiles level during installation, then tile alignment and spacing are improved, but removal of the devices from grout joints becomes difficult and risks tile damage
Solution Approach 1:
The lippage control device is divided into two separate components: a foot unit that remains embedded in the mortar beneath the tile, and a spacing tab that extends through the grout joint. This segmentation allows the spacing tab to be easily removed after mortar curing while the foot unit remains to maintain spacing, thus resolving the contradiction between achieving precise tile alignment and enabling easy device removal.
Solution Approach 2:
The spacing tab portion of the device is extracted and designed to be removable from the grout joint after installation. This extracted component can be easily pried out with a tool without damaging the tile, while the foot unit remains embedded in the mortar to continue providing spacing function. This extraction approach directly addresses the removal difficulty issue while preserving alignment precision.
2Ease of operation
If existing lippage control devices are removed by lateral striking, then device removal is simplified, but tile damage risk increases significantly
Solution Approach 1:
A removal tool acts as an intermediary between the installer and the spacing tab for extraction. The removal tool engages with the spacing tab and applies controlled force to pry it out from the grout joint without requiring lateral striking of the tile itself. This intermediary approach enables easy removal while eliminating the harmful lateral striking forces that could damage the tile.
3Shape
If grout joints are made thin to meet design requirements, then aesthetic appearance is improved, but lippage control device removal becomes more difficult
Solution Approach 1:
By segmenting the lippage control device into a foot unit and a spacing tab, the spacing tab can be designed with sufficient length to extend through thin grout joints (as small as 1/16 inch) while still providing adequate leverage for removal. The foot unit remains in the mortar bed where there is more space, allowing the spacing tab portion to be thin enough for aesthetic grout lines yet long enough to enable easy removal with a tool.
4Manufacturing precision
If lippage control devices are left in grout joints after mortar setting, then tile spacing is maintained, but mortar encapsulation blocks device removal and causes damage
Solution Approach 1:
The segmentation of the device into a foot unit and spacing tab allows the spacing tab to be removed after mortar curing while the foot unit remains embedded in the mortar to maintain spacing. The spacing tab can be easily pried out before the mortar fully encapsulates it, eliminating the blocking effect that prevents removal of traditional single-piece devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures uniform tile spacing and level alignment without damaging tiles, facilitating easy and safe removal of spacing tabs post-mortar curing, suitable for thin grout lines and reducing the need for costly remediation.
Implementation Method 1
A wedge is pushed into the tab opening, placing downward pressure on the tops of the tiles while pulling upward against the foot unit locked underneath the tiles, creating a clamping force which holds the tops of the tiles level with each other.
Implementation Method 2
The tab-to-foot joins withstand the straight-line constant clamping force between the wedge and the foot unit during use, and then break when a sharp oblique force is applied, allowing removal from the gap between tiles without damage to the tiles.
Data Source
AI summary
A tile-setting lippage and spacing control system and method for use with tiles set with mortar as floors or walls on prepared surfaces, providing spacing tabs each having a tab body with a tab opening to accommodate a wedge, a strengthened tab border, and a lower tab body meant to extend downward between tiles as a spacer. A foot unit having a footplate and footplate ridges is removably attached at the bottom of the lower tab body through tab-to-foot joins at the footplate ridges. In use, mortar is applied to a prepared surface. Tile is placed with spacing tabs placed into the grout-line gaps between tiles, with the footplate of the foot unit extending underneath both tiles and embedded in the mortar. The lower tab body extends upward between the tiles and sets the gap or grout line between the tiles. The tab body and strengthened tab border extend upward above the tops of the tiles. A wedge is pushed into the tab opening, placing downward pressure on the tops of the tiles while pulling upward against the foot unit locked underneath the tiles, creating a clamping force which holds the tops of the tiles level with each other. The tab-to-foot joins withstand the straight-line constant clamping force between the wedge and the foot unit during use, and then break when a sharp oblique force is applied, allowing removal from the gap between tiles without damage to the tiles. After the mortar cures and sets the spacing tab is removed by applying a sharp oblique force, tearing the tab body cleanly away from the foot unit which remains embedded in mortar underneath the tiles.