Stanley 47-827 Fatmax Xtreme 5LB Waterproof Red Chalk

The Stanley 47-827 Fatmax Xtreme 5LB Waterproof Red Chalk delivers long-lasting, high-visibility lines that hold up in wet and challenging jobsite conditions. Designed for exterior or high-humidity environments, this waterproof red chalk won’t bleed or fade when exposed to rain or moisture—making it ideal for concrete layout, roadwork, framing, and other outdoor marking tasks. It flows smoothly through chalk reels without clumping, thanks to a specialized formula that prevents blockages and downtime. The square bottle shape ensures it stays put on uneven surfaces, while the easy-pour top helps with clean, fast refills.

Red chalk is preferred for semi-permanent markings due to its strong visibility and resistance to weathering. The 5LB bulk bottle provides extended use for crews who mark frequently, cutting down on refill time and keeping work moving. For professionals needing reliable layout lines that won’t wash away, this chalk performs in rain, fog, or any moisture-prone setting

Stanley Fatmax Xtreme 5LB Waterproof Red Chalk At a Glance

• Waterproof chalk formula: Maintains bright, readable lines in wet environments
• Clump-free consistency: Keeps chalk reels working smoothly with reduced clogging
• Square bottle design: Won’t roll on uneven or sloped work surfaces
• Easy-pour spout: Simplifies refills and reduces waste on the job
• High-visibility red color: Stands out clearly against concrete, wood, or pavement
• Standard permanence: Ideal for jobs where marks need to last but not be permanent

Markets

• Construction: Keeps layout lines visible during framing or site prep in rain or damp conditions
• Concrete & Masonry: Excellent for wet pours or humid job sites where temporary layout is essential
• Roadwork & Paving: Red color stands out sharply on asphalt and concrete for line guides or cutting paths
• Municipal Maintenance: Useful for layout marking in parks, trails, and public infrastructure projects
• Trade Schools: Helps instructors demonstrate accurate, weather-resistant line-marking to students
• Exterior Carpentry & Decking: Maintains clean marking lines on wet lumber for framing or decking
• Landscaping & Outdoor Projects: Clear, visible marking for grading, fencing, or hardscape layout

When visibility, durability, and weather resistance are a must, this waterproof red chalk helps ensure accuracy and job efficiency. Roadwork crews benefit from clearly marked lines on asphalt or concrete. Framers and general contractors can trust the chalk to stay visible through framing and sheathing, even in wet weather. Trade instructors and city maintenance teams also appreciate the durable, low-maintenance markings for training or long-term layout applications.

Stanley 47-827 Fatmax Xtreme 5LB Waterproof Red Chalk Features

• Waterproof chalk will not fade or bleed in a wet environment
• Eliminates chalk clumping inside the chalk reel
• Square bottle will not roll off of work surfaces

Stanley 47-827 Fatmax Xtreme 5LB Waterproof Red Chalk Specifications

• Chalk Color: Red
• Permanence: Standard
• Weight: 2.46 kg (Net) / 2.455 kg (Gross)
• Bottle Size: 5LB (2.27 kg)
• Dimensions: 30 cm (L) x 20 cm (W) x 11 cm (H)
• CE Marked: Yes
• Belt Clip: No
• Easy Pour Bottle: Yes
• Number of Pieces: 1
• Is it a Set?: No

Why Tradespeople Choose the Stanley Fatmax Xtreme 5LB Waterproof Red Chalk

Pros often search for red waterproof chalk, fatmax red chalk, or semi-permanent layout chalk when they need strong visibility in unpredictable conditions. The Stanley 47-827 delivers just that—reliable line quality without smudging or running, even when the weather doesn’t cooperate. This is a trusted product for those laying out forms, snapping lines on sidewalks, or marking grades in wet or coastal climates. The red color holds up through rough conditions, making it a practical choice for both short-term and ongoing layout work.