GAUDON alternative to Tremco Spectrem 1 for dynamically moving joints

If you currently run Tremco Spectrem 1 on dynamically moving joints, this page sets out the GAUDON option, what the published specifications say, and where the two products differ. It is written to help you decide, not to make a claim we can't support.

Recommended GAUDON alternative

GAUDON G3 Exterior Façade High-Movement Silicone Sealant

High movement neutral cure silicone for exterior facades and the building envelope. Bonds to concrete, masonry, metal, glass, aluminum, ceramic, and stone. Stock colors are Black, White, Gray, Anodized Clear, and Dark Bronze with custom colors available. Available in 10.1 fl oz cartridge and 20 fl oz foil sausage.

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Specification comparison

Chemistrysingle-component, moisture-cure, ultra-low modulus silicone sealant100% silicone, Neutral Cure

ASTM C920 statusASTM C920 Type S, Grade NS, Class 100/50, Use NT, M, G, A, ONot classified

Movement class+100%/-50% (ASTM C719)±50%, Class 50

Interior / exteriorNot statedAbove grade exterior and building envelope

PaintabilityNot statedNot published in the GAUDON TDS

UV / weather resistanceMarketing claim only, no test methodPass, no failure after water and UV exposure, GB/T 14683 6.13

VOC contentNot stated30 g/L or less, Rule 1168 compliant

Application temperatureNot stated40°F to 100°F

Service temperatureNot stated-40°F to 300°F (-40°C to 149°C)

Cure characteristicsTack Free Time 30 to 60 min (ASTM C679); Curing Time 7 to 14 daysApprox. 1.7 hours · 7 to 14 days, full section

Packaging size10.1 oz (300 mL) cartridges, 20 oz (600 mL) sausages, 55 gal (208 L) drums10.1 fl oz cartridge or 20 fl oz sausage

Available colors17 colors, custom matchingBlack, White, Gray, Anodized Clear, Dark Bronze

Typical applicationsMost demanding dynamically moving jointsFaçades, Curtain Walls, Expansion Joints

Key differences

Chemistry differs: Tremco Spectrem 1 is a single-component, moisture-cure, ultra-low modulus silicone sealant, G3 is a 100% neutral cure silicone. Confirm paint and substrate requirements before switching.
G3's data sheet does not state a paintability position. If the joint must be painted, tell us the movement and exposure and technical sales will answer specifically.
Case pricing is quoted directly. Send a quote request with the quantity you need and we price it for you, then orders go by email or phone.

Different application?

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G3 Technical Data Sheet (TDS v2.0 · July 2026)G3 Safety Data Sheet

Competitor names and specifications are the property of their respective manufacturers and are referenced for comparison only. Recommendations are based on published product information. Always review the applicable GAUDON TDS and confirm project-specific compatibility before use.