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Slate & Tile Roof Installation, Repair & Maintenance

Slate & Tile Roof Installation

When a slate or tile roof reaches the end of its service life, or when a new addition must tie into an existing roof, we design and install slate and tile systems that respect the architecture of your home. We guide you through natural slate, clay tile, and select composite options, ensuring the proper thickness, color blend, and layout for both the structure and local conditions. Correct underlayments, fastening methods, and copper or metal flashings are integral to every system we build.

Repair, Maintenance & Select Replacement

As recognized slate roof specialists, we help you evaluate all viable options so the final result reflects what matters most to you. Many contractors claim to install slate yet lack true slating expertise, relying on basic layouts or improper fastening methods that shorten the life of the roof. We work with trusted manufacturers such as Vermont Slate Co., North Country, Ludowici, DaVinci, and Brava. We deliver both natural and synthetic systems, including lighter weight alternatives for homes not framed to support traditional materials.

Flashing, Copper Details & Integration

Slate and tile roofs often rely on high-quality flashing and metal details to stay watertight. We coordinate closely with our copper and metal team to repair or replace flashing at chimneys, skylights, valleys, and eaves. If you are planning other copper upgrades, our copper roofing and flashing page gives further insight to how we can integrate decorative and functional metal details with your slate or tile roof.

Roof Inspections for Slate & Tile Roofs

If you are purchasing a home with a slate or tile roof or want to understand its condition, we provide detailed inspections that identify damage, prior patchwork, and potential leak points, followed by a clear, prioritized plan for maintenance, repair, or future replacement. Because slate and tile roofs can last 75 years or more when properly cared for, we take a long term view, focusing on preserving your home’s character while ensuring reliable, watertight performance in Westchester’s demanding climate.

Frequently Asked Questions

Please reach us at info@groupthreeconstruction.com if you cannot find an answer to your question.

How much does a slate roof cost?

There is no single price for a slate roof. Cost depends on several variables, including the type of slate or tile selected, roof size and pitch, layout complexity, flashing details, and site access. Natural slate carries a higher upfront cost than asphalt, but with a lifespan of 75 to 100 years or more, it is the more economical option over time, outlasting multiple asphalt roof replacements. In addition, natural slate immediately adds lasting value and prestige to your property.

How do I find a qualified slate roofing contractor?

Many contractors claim to be "slate installers" yet in practice rely on simplified, uniform layouts due to limited field experience. True slate work is an art form that embraces variation in size, thickness, color, style, and pattern. Homeowners can educate themselves through resources such as Slate Roof Magazine or Joseph Jenkins’ Slate Roof Bible. One of the clearest warning signs is a contractor who insists that a simple, uniform installation is the only option.

What type of underlayment and fasteners do you use?

Slate roofs can last 100 years or more. We use a double layer of traditional 30 lb. slater's felt, incorporate ice and water membrane where needed, and use only 100% copper slater’s nails for lasting durability. We avoid "high performance" synthetic underlayments, which we’ve found do not perform reliably over time.

How long can a slate or tile roof last?

When properly installed and maintained, natural slate and high-quality tile roofs can last 75 years or more. Many factors affect lifespan, including the type of slate or tile, underlayments, flashing quality, quality fasteners and ongoing maintenance.

Can my homes structure support the weight of slate?

Slate weight varies by size and thickness. If your roof was originally framed for slate, it can safely hold new slate. For roofs not previously designed for slate, we can discuss synthetic slate alternatives like DaVinci.

Can you repair my slate or tile roof instead of replacing it?

In most cases, yes. Slate roofs are not only beautiful but also offer exceptional long-term value, often lasting a century or more—far longer than asphalt roofs, which may need multiple replacements over the same period. We repair broken or missing slates, flashing, and valleys, and correct prior patchwork. During inspection, we advise whether repair or full replacement is the best long-term solution.

Expertly Crafted Slate and Tile Roofs