Pecora 890FTS is a field tintable, neutral-curing silicone that will not stain natural stone, such as marble and granite, and will react with atmospheric moisture to form a durable, flexible building sealant. 890FTS performs exceptionally well under dynamic conditions with 890FTS accommodating long-term movement of +100/-50% in properly designed joints. Harsh weather conditions and extreme temperatures have very little effect on the performance of 890FTS even after years of exposure. Pecora 890FTS 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 the ultra-low modulus formulation places minimal stress on the bond line. Pecora 890FTS provides superior adhesion and bonds tenaciously to most substrates without the need for priming.
for sealing expansion and control joints in precast concrete panels
architectural and natural stone
metal curtain walls
sealing of door and window perimeters
Exterior Insulation Finish Systems (EIFS)
fluoropolymer and powder coated aluminum
many plastics, generally without need for a primer.
Where the versatility of field tinting through the use of our universal color packs is needed.
new or remedial construction
Pecora 890FTS 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, 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 the sealant is applied. Apply sealant after painting is completed.
In structural glazing applications.
On surfaces with special protective or decorative coatings without prior consultation with Technical Services.
With building materials that bleed oils, plasticizers or solvents, i.e., impregnated wood, caulks, some vulcanized rubber gaskets or tapes, etc.
In interior penetration firestop systems.
On surfaces in direct contact with food, use of Pecora 860 silicone with FDA approval is recommended.