Dwg: Article written and Venn diagram created.

2026-01-09T10:10:41Z

Article written and Venn diagram created.

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== Sanded versus Unsanded Grout ==
Grout is a cementitious mixture used to fill the spaces between tiles, securing them and preventing moisture from reaching the substrate.<ref name="The Spruce 2023">"Sanded vs. Unsanded Tile Grout: Basics, Pros & Cons," ''The Spruce'', July 16, 2023.<ref name="ref1" /></ref><ref name="BHG 2023">"Sanded vs. Unsanded Grout: Which One Should I Use?," ''Better Homes & Gardens'', October 4, 2023.<ref name="ref2" /></ref> The two primary types of cement-based grout are sanded and unsanded. The fundamental difference between them is the inclusion of fine sand in the mixture of sanded grout.<ref name="ref3" /><ref name="ref4" /> This sand acts as a bulking agent and provides strength, making each type suitable for different applications.<ref name="ref5" />

The selection between sanded and unsanded grout primarily depends on the width of the tile joints and the type of tile being installed.<ref name="ref5" /> Sanded grout is generally used for wider joints, while unsanded grout is used for narrower spaces and with tiles that are prone to scratching.<ref name="ref1" />

=== Comparison Table ===
{| class="wikitable"
|-
! Category !! Sanded Grout !! Unsanded Grout
|-
| '''Composition'''
| Portland cement, pigments, and fine silica sand.
| Portland cement, pigments, and polymer additives; contains no sand.
|-
| '''Recommended Joint Width'''
| 1/8 inch to 1/2 inch (3mm to 13mm).<ref name="ref1" /><ref name="ref2" />
| Under 1/8 inch (3mm).<ref name="ref1" /><ref name="ref3" />
|-
| '''Texture'''
| Gritty and coarse.<ref name="ref4" />
| Smooth paste-like consistency.
|-
| '''Durability & Shrinkage'''
| More durable, resistant to cracking and shrinkage due to sand content.
| Less durable in wide joints, more prone to shrinkage and cracking.
|-
| '''Common Applications'''
| Floors, high-traffic areas, and wide-joint installations.<ref name="ref3" />
| Vertical surfaces (walls, backsplashes), narrow joints, and delicate tiles.
|-
| '''Risk of Scratching'''
| Can scratch polished stone, glass, and other delicate tile surfaces.<ref name="ref1" />
| Will not scratch delicate surfaces.<ref name="ref1" /><ref name="ref5" />
|-
| '''Cost'''
| Generally less expensive.<ref name="ref1" /><ref name="ref2" />
| More expensive due to the cost of polymer additives.<ref name="ref1" /><ref name="ref2" />
|}

[[File:Venn_diagram_Differences_between_Sanded_Grout_versus_Unsanded_Grout_comparison.png|thumb|center|800px|alt=Venn diagram for Differences between Sanded Grout and Unsanded Grout|Venn diagram comparing Differences between Sanded Grout and Unsanded Grout]]

=== Applications and Considerations ===
The width of the space between tiles is the most critical factor in choosing a grout type. Sanded grout is recommended for joints that are 1/8 inch or wider.<ref name="ref1" /><ref name="ref3" /> The sand particles provide bulk, which prevents the grout from shrinking and cracking as it cures in these larger gaps. For joints narrower than 1/8 inch, unsanded grout is preferred because its finer consistency allows it to be easily worked into the tight spaces.<ref name="ref3" /> Using sanded grout in narrow joints can result in a poor fill and voids, as the sand particles can bridge the gap.<ref name="ref1" /><ref name="ref2" />

The type of tile material also influences the choice. The abrasive texture of sanded grout can scratch delicate surfaces such as polished marble, limestone, glass, or some metal tiles. For these materials, unsanded grout is the safer option to avoid damage during application.

For flooring applications that experience heavy foot traffic, sanded grout is typically the better choice due to its superior durability and resistance to wear.<ref name="ref2" /> Unsanded grout is often preferred for vertical surfaces like shower walls and kitchen backsplashes.<ref name="ref2" /> Its stickier consistency, resulting from a higher concentration of polymers, helps it adhere to vertical surfaces with less sagging compared to the heavier sanded variety.<ref name="ref1" /><ref name="ref2" />

=== Composition and Properties ===
Sanded grout is a mixture of Portland cement, colored pigments, and fine silica sand. The sand strengthens the grout, making it less prone to shrinkage and cracking, which is especially important in wide joints. Unsanded grout is composed of Portland cement and powdered pigments but lacks sand. To compensate for the absence of sand, it contains polymer additives that improve its workability and adhesion, particularly for vertical applications.<ref name="ref1" />

Due to its porous nature, cementitious sanded grout typically needs to be sealed after it cures to protect it from stains and moisture.<ref name="ref1" /> Some modern unsanded grouts with high polymer content may not require sealing.<ref name="ref1" />

== References ==
<references />

[[Category:Comparisons]]

Differences between Sanded Grout and Unsanded Grout - Revision history

Dwg: Article written and Venn diagram created.