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Masterseal - NP1STN12 - NP1 10.1 Oz. Polyurethane Sealant, Stone
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Masterseal - NP1STN12 - NP1 10.1 Oz. Polyurethane Sealant, Stone

Users say:
NP-1 is a great quality caulk that is easy to use and holds up well in direct sunlight. It is perfect for sealing cracks in masonry and metal products, and is also great for cleaning out and taping around cracks. It is also available in a variety of colors and is a great value for the price.
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A versatile moisture-curing high-performance polyurethane sealant with permanent elasticity (Formerly: Sonolastic NP 1). For use on active, vertical and horizontal interior, exterior joints including expansion wall joints, floor and pavement joints, curtain walls, panel walls, precast walls, window frames, structural components, dams, spillways, and storm water drains. Substrates include concrete, masonry, aluminum, and wood. Bonds to concrete, masonry, and other materials without a primer. Does not require mixing. Skins overnight and fully cures within a week. Dries smooth and is paintable. Under ideal conditions: Skins over (…
A versatile moisture-curing high-performance polyurethane sealant with permanent elasticity (Formerly: Sonolastic NP 1). For use on active, vertical and horizontal interior, exterior joints including expansion wall joints, floor and pavement joints, curtain walls, panel walls, precast walls, window frames, structural components, dams, spillways, and storm water drains. Substrates include concrete, masonry, aluminum, and wood. Bonds to concrete, masonry, and other materials without a primer. Does not require mixing. Skins overnight and fully cures within a week. Dries smooth and is paintable. Under ideal conditions: Skins over (24 hrs), Functional (3 days), Full Cure (5-7 days). Does not contain a fungicide, but does not generally harbor mold/mildew growth. Longevity: Up to 15 years. Meets federal specifications TT-S-00230C, Type II, Class A; ASTM-C-920, Type S, Grade NS, Class 25 - use NT, M, A, G, and I; Corps of Engineers CRD-D-541, Type II, Class A; and ISO 11600-F-25LM. USDA approved for use in meat and poultry areas. Canadian approval for use in establishments that handle food. SWRI validated. Joint movement capability +/- 35%. 10.1 Oz tube. Shelf life: 12 months. Application Temperature: 34 F To 180 F; Color: Stone; Color Family: Gray; Container Size: 10.1 Oz.; Country of Origin: US; Coverage: 26 LFT at 1/4 In. Bead; Coverage Area: 26 LFT @ 1/4 In. Bead; Coverage Area (LFT): 26; Cure Time: 7 Days; Cure Time (Hr.): 168; Dries To Touch: 24 Hr.; Dries To Touch (Min.): 1440; Gap Span: 1-1/2 In.; Gap Span (In.): 1.5; Heat Resistant: No; Indoor/Outdoor: Indoor/Outdoor; Longevity: 15 Yr.; Longevity (Yr.): 15; Material: Polyurethane; Moisture Resistant: Yes; Mold and Mildew Resistant: No; Paintable: Yes; Permanently Flexible: Yes; Service Temperature Range: -40 F To 180 F; Size: 10.1 Oz.; Stainable: No; Tintable: No
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Review summary

AI-generated content
NP-1 is a great quality caulk that is easy to use and holds up well in direct sunlight. It is perfect for sealing cracks in masonry and metal products, and is also great for cleaning out and taping around cracks. It is also available in a variety of colors and is a great value for the price.

Pros

  • Excellent sealant
  • Good quality
  • Durable in various weather conditions
  • Flexible and doesn't crack

Cons

  • Difficult to remove
Read original reviews

Description

A versatile moisture-curing high-performance polyurethane sealant with permanent elasticity (Formerly: Sonolastic NP 1). For use on active, vertical and horizontal interior, exterior joints including expansion wall joints, floor and pavement joints, curtain walls, panel walls, precast walls, window frames, structural components, dams, spillways, and storm water drains. Substrates include concrete, masonry, aluminum, and wood. Bonds to concrete, masonry, and other materials without a primer. Does not require mixing. Skins overnight and fully cures within a week. Dries smooth and is paintable. Under ideal conditions: Skins over (24 hrs), Functional (3 days), Full Cure (5-7 days). Does not contain a fungicide, but does not generally harbor mold/mildew growth. Longevity: Up to 15 years. Meets federal specifications TT-S-00230C, Type II, Class A; ASTM-C-920, Type S, Grade NS, Class 25 - use NT, M, A, G, and I; Corps of Engineers CRD-D-541, Type II, Class A; and ISO 11600-F-25LM. USDA approved for use in meat and poultry areas. Canadian approval for use in establishments that handle food. SWRI validated. Joint movement capability +/- 35%. 10.1 Oz tube. Shelf life: 12 months. Application Temperature: 34 F To 180 F; Color: Stone; Color Family: Gray; Container Size: 10.1 Oz.; Country of Origin: US; Coverage: 26 LFT at 1/4 In. Bead; Coverage Area: 26 LFT @ 1/4 In. Bead; Coverage Area (LFT): 26; Cure Time: 7 Days; Cure Time (Hr.): 168; Dries To Touch: 24 Hr.; Dries To Touch (Min.): 1440; Gap Span: 1-1/2 In.; Gap Span (In.): 1.5; Heat Resistant: No; Indoor/Outdoor: Indoor/Outdoor; Longevity: 15 Yr.; Longevity (Yr.): 15; Material: Polyurethane; Moisture Resistant: Yes; Mold and Mildew Resistant: No; Paintable: Yes; Permanently Flexible: Yes; Service Temperature Range: -40 F To 180 F; Size: 10.1 Oz.; Stainable: No; Tintable: No

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