Spectrem 1 : Tremco 20oz Sausage


  • One product can be used for several applications on the same job from expansion joints to perimeter caulking with its excellent adhesion property to a variety of substrates.
  • Ultra-low modulus means high elasticity with accommodation for movement of +100/-50%.
  • Wide variety of colors to choose from with custom colors and color matching also available for a particular project.
  • An excellent sealant for difficult-to-adhere-to substrates.
  • Greenguard Gold certification ensures safety for use in the most sensitive indoor environments including schools and hospitals.
  • Resistance to ultraviolet light, driving rain, temperature extremes and ozone safeguards against water penetration with exceptional weather-ability in all climate zones.
  • No mixing required, so that product is always ready to use for immediate application with conventional caulking equipment.

Data Sheet

Color Chart



Spectrem 1 is a single-component, high-performance, ultra- low modulus, moisture-cure silicone sealant. Questions?Contact us

Spectrem is the perfect sealant for the most demanding dynamically moving joints, including materials such as metal panels, precast concrete panels, aluminum curtain walls and window perimeters, that have a high coefficient of linear expansion.

Spectrem 1 meets or exceeds the requirements of the following specifications:

  • ASTMC1248
  • ASTMC920TypeS,GradeNS,Class100/50,UseNT,M,G,AandO
  • ASTME84
  • ASTMC1382
  • EIMATestMethod300.01
  • U.S.FederalSpecificationTT-S-001543A(COM-NBS)ClassA
  • CAN/CGSB 19.13-M87, MCG-2-40-B-N
  • U.S.FederalSpecificationTT-S-00230C(COM-NBS)ClassA,TypeII
  • Spectrem1 has been tested as a component of several wall assemblies meeting the Standard Test Method for Determining Air Leakage of Air Barrier Assemblies, ASTM E2357, the Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non- Load-Bearing Wall Assemblies Containing Combustible Components and NFPA 285.

Closed-cellpolyethylenebackerrodsortheTremcosealanttapeillmod®600 is a preferred option for joint backing to control the sealant bead’s depth. Installing an adhesive-backed polyethylene tape will avoid three-sided adhesion, when the joint’s depth will prevent use of joint backing. Ensure joint backing is dry at time of application.

Surface must be clean, dry and  sound.  Contact surfaces should be free of oils, dust, loose dirt and any other contaminants. Tremco suggests that air temperatures be at least 40 °F (5 °C) before applying any sealant.

With the use of conventional caulking equipment, Spectrem 1 is easy to use. Fill up joints completely and tool. A durable skin will form between 10 to 30 min at 50% RH, 75 ˚F (23.9 ˚C). Please visit www.tremcosealants.com for detailed application instructions.

Joint Design:
May be used in any joint designed in accordance with accepted engineering/architectural practices. Joint width should be not less than 1/4″ (6 mm) wide and 4 times anticipated movement.


Additional information

Weight .88 kg
Dimensions 33.02 × 5.08 × 5.08 cm

Adobe Tan, Aluminum Stone, Anodized Aluminum, Black, Bronze, Buff, Charcoal, Dark Bronze, Dusty Rose, Ivory, Gray, Light Bronze, Limestone, Off White, Precast, Rustic Brick, Sandstone, White


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