Pecora 890NST Control Joint Non-Staining Technology Sausages (+100/-50)

Pecora 890NST is designed primarily for sealing expansion and control joints in precast concrete panels, architechtural and natural stone, metal curtainwalls, perimeter sealing of doors and windows, Exterior Insulation Finish Systems (EIFS) and other areas requiring a high-performance sealant.

Pecora 890NST adheres tenaciously to concrete, natural stones, masonry, steel, fluoropolymer painted and powder coated aluminum, wood, vinyl and many other plastics, generally without need for a primer, and performs equally well in new or remedial construction. Pecora 890 NST is (+100/-50%) non-staining, ultra-low modulus, and high-performance.

Pecora 890NST is a one-part, neutral-curing, ultra low-modulus silicone sealant that
will not stain natural stone such as marble and granite and that reacts with atmospheric moisture to form a durable, flexible building sealant. Pecora 890NST performs exceptionally well under dynamic conditions due to its ultra-low modulus, high extension/ compression,recovery properties and strong adhesion to most building materials and accommodates long-term movement of +100-50% in properly designed joints.

Harsh weather conditions, rain, sleet, snow, sunlight and extreme temperatures, high ozone concentrations and/or exposure to intense ultra violet rays have very little effect on the ultimate performance of Pecora 890NST even after years of such exposure. 

Pecora 890NST is particularly well suited for use in Exterior Insulation Finish Systems (EIFS) because of its proven strong adhesion to all base and top coats and because its ultra-low modulus formulation places minimal stress on the bond line.Additionally, Pecora 890NST is available in many of the more popular EIFS colors.

Limitations:
Pecora 890NST should not be used in the following applications:
• Sealing horizontal decks, patios, driveway or terrace joints where abrasion or
physical abuse is encountered
• Below grade or sealing submerged joints or below the waterline in marine uses
• In totally confined or air-free spaces since moisture is necessary for cure
• In designs that will be painted after application of the sealant. Sealant should be applied after painting is completed
• In structural glazing applications
• On surfaces with special protective or decorative coatings without prior consultation withTechnical Services
•With building materials that bleed oils, plasticizers or solvents, i.e. impregnated wood, oil-based caulks, some vulcanized rubber gaskets or tapes, etc.
• In interior penetration firestop systems
• On surfaces in direct contact with food. For such applications, use of Pecora 860 silicone with FDA approval is recommended

Pecora 890NST's non-staining technology provides an advantage over 790.

Sausages sold per case. 12 per case.

*please add 10% to price if ordering less than full case

Pecora 890NST MSDS Sheet

Pecora 890NST Specification Sheet

Pecora 890NST Color Chart

Pecora 890NST Informational Brochure