Porcelain Paver Jointing Sand: How Techniseal NextGel Works

Porcelain paver jointing sand has a harder job than ordinary polymeric sand. Porcelain pavers have a dense, smooth face, joints are often narrow, and anything left on the surface shows. Techniseal built NextGel PORCELAIN Paver Jointing Sand specifically for this job and describes it as a grout replacement for porcelain pavers: a dry mix of graded sand and binder that is compacted, watered, and hardens as it dries.

Below is what the product is, the joint sizes and conditions it is rated for, how Techniseal says to install it on porcelain, and the other porcelain rated options we carry. Every figure comes from the current Techniseal data sheet (updated May 26, 2025) or from the other manufacturers' data sheets named in each section.

Why porcelain paver jointing sand is its own category

Most polymeric sands were written around concrete pavers, with minimum joint depths of about 1-1/2 in and wider joints. Porcelain changes the math. Outdoor porcelain is typically thinner, the joints are tighter, and the surface is smooth, so residue and haze are easy to see. Traditionally, installers turned to cement based grout for these jobs.

A porcelain rated jointing sand has to flow into narrow joints, work at a shallower depth, and leave the tile face clean. Techniseal addresses the last point with what it calls Ultra-Clean Technology, which it describes as haze and dust free. The data sheet adds a note that the only dust comes naturally from the sand itself, especially the grey color, which is made from crushed aggregate.

What NextGel PORCELAIN is

Techniseal NextGel PORCELAIN Paver Jointing Sand is sold in 25 lb bags. According to the data sheet it:

• Needs no mixing. It goes in dry, is compacted, watered, and hardens after drying.
• Is described as color consistent and efflorescence free.
• Is designed for porcelain pavers and also listed for calibrated natural stones such as granite, marble and travertine, plus concrete pavers, wet cast pavers, slabs, textured or clay pavers and concrete overlays.
• Comes in four colors: Grey Moonstone, Black Onyx, White Pearl and Beige Agate. Our NextGel Porcelain color samples let you check all four against your tile before ordering.

Key specifications from the data sheet

Specification	Porcelain tiles on a draining base	Concrete pavers on a draining base
Joint width	1/16 in to 1/2 in	1/16 in to 1 in
Minimum joint depth	3/4 in	1-1/2 in
Compaction	Mandatory, paver roller with rubber coated or nylon rollers	Mandatory, plate compactor or roller compactor
Coverage per 25 lb bag	About 100 sq ft, range 80 to 120 sq ft	Narrow joints 30 to 60 sq ft, wide joints 13 to 20 sq ft
Installation temperature	Above 50°F for 48 hours after installation	Above 50°F for 48 hours after installation
Traffic	Pedestrian immediately, vehicular after 48 to 72 hours	Pedestrian immediately, vehicular after 48 to 72 hours

You can read the full Techniseal NextGel PORCELAIN data sheet on Techniseal's site, or find it in our TDS and SDS library.

Installation conditions to check first

• Test on a small hidden area of about 4 sq ft first. Techniseal's limited warranty is tied to that test.
• Surface and joints must be dry, and the sprinkler system must be off.
• The temperature must be above 50°F for the 48 hours following installation.
• The sand must dry completely before it sees rain, 24 to 48 hours minimum, longer in cold or humid weather.
• On very porous natural stone, the surface must be especially dry or staining may occur.
• The bedding must drain. Techniseal warns that bedding or screening materials that trap moisture can cause problems.

How to install porcelain paver jointing sand, step by step

This is a condensed version of Techniseal's porcelain instructions. Follow the bag and the current data sheet on site.

1. Make sure the tiles are well embedded in the bedding layer, or properly installed on NextBase panels.
2. Spread the sand evenly over a small area and use a street broom with semi rigid bristles to fill the joints completely. Move sand over short distances only.
3. Pass the paver roller compactor over the whole surface. Spread more sand to refill, then compact a second time. Several passes may be needed until the joints are saturated.
4. Broom off the excess, then level the sand with a leaf blower. The sand should sit at least 1/8 in below the top of the tiles. Techniseal warns that joints that are not recessed can degrade early.
5. Water with a handheld or backpack sprayer, starting at the bottom of the slope. Quickly water the joints of a 100 sq ft section for 15 to 20 seconds, aiming to saturate the joint in one pass.
6. Watch for water pooling on the sand as the cue to stop. Once there is no free water, check how deep the activation goes. If it is 75 percent of the joint depth or more, stop. If less, water for 5 more seconds and check again after 30 seconds.

Techniseal notes that NextGel PORCELAIN activates fast and that it is easy to overwater large tiles, so time each section carefully. The sand also starts repelling water a few minutes after initial wetting, so finish each section before moving on.

Traffic, cleaning and sealing afterwards

Foot traffic can go on immediately, and vehicles after 48 to 72 hours. Wait at least 7 days, and make sure the joint has hardened, before cleaning or sealing. For concrete paver installations, Techniseal says the typical wait may take up to 30 days depending on climate. Pressure washers and similar cleaning devices are restricted during the first 30 days, and the data sheet suggests soft jet accessories after that.

Do not be alarmed if the joints feel softer in humid weather. The data sheet states that joints become soft when humid and hard again when dry. Keep soil, grass clippings and organic matter off the joints, since Techniseal lists excess moisture, shade and debris as causes of moss and early wear.

Other porcelain rated jointing products compared

NextGel PORCELAIN is not the only option. Here is how it lines up against other products whose data sheets list porcelain:

Product	Porcelain joint width	Joint depth	How it sets
Techniseal NextGel PORCELAIN (25 lb bag)	1/16 in to 1/2 in	3/4 in minimum	Dry applied, compacted, water activated
Alliance Gator Nitro Joint Sand (40 lb pail)	1/8 in to 1/4 in	3/4 in to 3-1/8 in	Air cure, permeable, installs rain or shine above 37°F
Alliance Gator Nitro X Fine Joint Sand (27.5 lb pail)	1/8 in to 1/4 in	3/4 in to 3-1/8 in	Air cure, low permeability, above 37°F
SEK Surebond PolySweep (50 lb bag)	Lists porcelain tile as a substrate, joints up to 3/4 in	1-1/2 in minimum	Dry applied, water activated; do not compact if the porcelain maker advises against it

The right choice depends on your joint width, joint depth, base and whether you can run a roller compactor. Our polymeric sand comparison lays the ratings side by side.

How much porcelain paver jointing sand do you need?

For porcelain tiles, Techniseal says one 25 lb bag normally covers 100 sq ft, with a range of 80 to 120 sq ft depending on tile size and shape and on joint width and depth. Large tiles with tight joints land at the high end. Enter your tile size, joint width and depth in our polymeric sand calculator for a bag count.

Frequently asked questions

Can you use regular polymeric sand on porcelain pavers?

Only if its data sheet lists porcelain and your joints fit its width and depth range. Many standard sands need 1-1/2 in of depth. NextGel PORCELAIN is rated from 3/4 in deep.

Can you use a plate compactor on porcelain?

For porcelain tiles, Techniseal specifies a paver roller compactor with rubber coated or nylon rollers, or a hand tamper in tight spots. Also follow your porcelain manufacturer's guidance.

How soon can you walk on NextGel PORCELAIN joints?

Techniseal lists pedestrian traffic as immediate and vehicular traffic after 48 to 72 hours, but the sand still needs to dry completely before rain.

What is the minimum temperature for installation?

The data sheet requires temperatures above 50°F for 48 hours following installation.

What colors does NextGel PORCELAIN come in?

Grey Moonstone, Black Onyx, White Pearl and Beige Agate. Order the color sample kit to compare them against your tile.