Tenax Glaxs vs. Integra Horizon — Stone Seam Adhesive Comparison

Feature	Tenax GLAXS Fast	Integra Horizon
Chemistry	Two-part Hybrid Polymer — not an epoxy, polyester, or MMA	Two-part methacrylate (MMA)
Odor / jobsite air	No odor formulation — no methacrylate smell in occupied homes	MMA adhesives carry the characteristic strong methacrylate odor
VOC content	Zero VOC	Not published
Staining on light material	Leaves no halos or shadows — safe on white quartzite, marble, light porcelain	Not published
Finish	Glossy, smooth, easily polished — built for visible seams	Not published
Gel / working time	Gels in 3–5 min (bulk, 77°F); tacky-free in 25 min	9–14 min working time
Fixture / handling	Parts locked at gel (3–5 min)	Fixture time 20–30 min
Cut & polish	60 min at 77°F (TDS)	Not published
Application temp window	34°F and up	60°–80°F
UV performance	Zero yellowing — no change after Q-Sun climatic chamber test equivalent to 1 year outdoors (light + rain + thermal shock, ASTM D904)	ΔE* below 1.50 (QUV) — published for select popular colors
Indoor / outdoor	Both	Both
Vertical / miter work	Non-drip gel consistency — holds on 45° miters and vertical joints	No-sag formula
Bonded-joint strength (pull-off adhesion, ASTM D4541 — tension pulling an actual glued joint apart) ¹	13–14 MPa (~1,900–2,000 psi) on quartz and ceramic, post-cured	Not published
Cured-resin flexural strength (bending a beam of cured adhesive — a bulk material property) ¹	Not published	Over 4,000 psi
Cured hardness	Shore D 80 (ASTM D2240)	Not published
Cured temperature rating	-13°F to 140°F continuous service range (stated TDS rating) ²	-40°F to 158°F temperature cycling test (ASTM D1183) ²
Gap filling	Low-shrinkage formula; recommended bond line not published	Recommended bond line under 0.04" (1.0 mm)
Colors	24+ colors, color-matched to 3,500+ quartz, porcelain, and stone materials	Color-matched range to leading brands
Cartridge / mix ratio	215 ml, 2:1 pre-dosed bi-axial cartridge	10:1 cartridge
Shelf life	18 months in pack / 12 months out of pack	1 year
Substrates	Natural stone, quartz, porcelain, ceramic, sintered stone	Quartz, porcelain, sintered stone, natural stone

¹ These are different tests of different properties. Pull-off adhesion measures the force to separate a real bonded joint and is limited by the bond interface and the substrate; flexural strength measures a beam of cured resin in bending and inherently produces much larger numbers. Neither manufacturer publishes the other's test, so the two values cannot be compared to each other.

² Also not directly comparable. Tenax publishes a stated continuous in-service temperature range; Integra publishes results of a temperature cycling test (ASTM D1183). A cycling test result is not a continuous service rating.

Why Fabricators Seam with GLAXS

It's not an epoxy. It's not a polyester. It's not an MMA.
GLAXS is Tenax's own Hybrid Polymer chemistry, purpose-built for visible seams in stone, quartz, and porcelain. Methacrylate adhesives get the job done, but every installer knows the tradeoffs: the smell that fills a finished kitchen, and the risk of shadowing on light, translucent material. GLAXS is a zero-VOC, low-odor formulation that leaves no halos or dark patches — even on white quartzite, Calacatta-look porcelain, and light marble, where a stained seam means a rejected top.

A seam you can actually polish.
GLAXS cures to a smooth, glossy, low-shrinkage surface that's ready to cut and polish in about an hour at shop temperature. The result is the tight, wet-look seam that separates a fabricated joint from a caulked one. Shore D 80 hardness when cured.

Fast where it counts.
Gel time of 3–5 minutes means parts stop moving fast, with tack-free in 25 minutes. Assemble the miter, set your clamps, and you're cutting and polishing in about an hour — no overnight cure, no tying up the bench.

Color match is not an afterthought.
24+ cartridge colors matched against a library of 3,500+ quartz, porcelain, and stone materials from the leading surface brands. Pre-dosed 2:1 cartridge with static mixing nozzle — no batch mixing, no ratio errors, no wasted material.

Works when the shop is cold.
GLAXS applies and cures at any temperature above 34°F. Methacrylate seam adhesives like Horizon publish an operating window of 60°–80°F — below that, you're outside spec. Unheated shop in January, early-morning outdoor kitchen install, jobsite miter in the shoulder season: GLAXS keeps working.

Indoor and outdoor, without the yellow.
A zero-yellowing formulation, verified in Q-Sun climatic chamber testing simulating a full year of outdoor exposure — sun, rain, and thermal shock — with no color change. Rated for cured service from -13°F to 140°F. (Not for submerged applications.)

The Details

215 ml pre-dosed 2:1 bi-axial cartridge (requires Tenax-approved 2:1 professional gun)
Includes 2 static mixing nozzles
18-month shelf life in pack / 12 months out of pack (store 64°–77°F)
Application temperature above 34°F (1°C); not for submerged applications
Substrates: porcelain, ceramic, sintered stone, engineered quartz, granite, marble, quartzite

Usage Notes (per Tenax TDS)

Before bonding, it is mandatory to discard the first 10–20 g of extruded product (~10 cm / 4"), and again each time a new mixer is fitted
After a pause longer than 3 minutes (at ~68°F), purge another 10–20 g before continuing; after a pause longer than 5 minutes, fit a new mixer
Warmer shop temperatures shorten these windows
Lightly sand glossy or smooth surfaces before bonding; surfaces must be clean, dry, and grease-free

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