Sika Sikaflex NP1 (FKA MasterSeal NP 1) Stone 20 oz Sausage Pack Polyurethane Construction Sealant Color-Matched for Stone Brick & Concrete Expansion & Control High-Movement Exterior Perimeter Joint

Sika Sikaflex NP1 in Stone is a contractor-grade polyurethane construction sealant supplied as a 20 oz sausage pack for bulk caulk guns. The stone color is designed to blend with masonry, brick, and concrete tones, making it a great choice for exterior veneer work and clean joint lines on architectural surfaces.NP1 cures to a durable, elastic seal that flexes with seasonal expansion and contraction to help reduce cracking along joint edges. Use for expansion joints, control joints, and perimeter sealing on properly prepared concrete, masonry, metal, and wood. The sausage pack format supports long joint runs with fewer reloads, improving productivity on jobsite sealing.Stone color finish blends with masonry, brick, concrete, and veneer details20 oz sausage pack provides more linear feet and fewer changeovers on long runsFlexible movement seal for joints that expand and contract with temperature changesStrong adhesion to common construction materials with proper prep and backer rodExterior durability for weather exposure on facades, sills, and perimeter jointsBlends with masonry tones: Stone color pairs well with brick, natural stone, stucco, and concrete surfaces for a subtle joint line. The 20 oz sausage pack is great for veneer edges and long joint runs, supporting efficient application and consistent bead control.Stone veneer edges, sills, and masonry transitionsBrick and concrete control joints and perimeter jointsExterior facade caulking and weathersealing repairsResidential and commercial masonry maintenance workApply with a sausage caulking gun, tool to a smooth profile, and follow recommended joint design for best results. Sika quality and Sikaflex sealing performance for pros.

• FINISH - Stone color blends with natural stone, brick, and concrete for a discreet joint line on veneers and masonry walls; ideal for matching tan and sandstone tones. Delivers a professional look with fewer visible touch-ups on facades daily.
• APPLICATION - Sikaflex NP1 Stone is a polyurethane construction sealant for expansion joints, control joints, and perimeter sealing on masonry, precast concrete, stone veneer, metal, and wood; great for exterior walls, sills, and trim transitions.
• MOVEMENT - Elastomeric sealant flexes with thermal expansion and minor building movement to maintain a tight seal at masonry transitions; helps reduce cracking along joint edges. Suitable for joints that move with seasonal temperature changes.
• WEATHER - Exterior-rated polyurethane resists rain, UV, wind-driven water, and freeze-thaw cycling to help keep masonry joints sealed; durable cure supports long service life. Ideal for residential repairs and maintenance in harsh climates.
• ADHESION - Strong primerless bonding to many common construction materials helps reduce callbacks; ideal for stone veneer edges and masonry joints. Use proper surface prep and backer rod to control depth and create a durable seal that lasts.