Winnetka housing & roofing stock
Winnetka has a high concentration of estate homes with real slate, clay tile, and cedar shake roofs, alongside large colonial revivals and English manors. Roof areas of 6,000 to 14,000 square feet are common, often with multiple wings, towers, and conservatory tie-ins.
Weather and microclimate
Winnetka's lake bluff position concentrates wind events. East-facing slopes here see some of the highest sustained wind loads anywhere on the North Shore.
Slate and tile restoration
Real slate roofs in Winnetka are routinely 80 to 110 years old and rarely need full replacement — what they usually need is selective slate replacement, copper flashing restoration, and snow-guard reinstallation. Done properly that means copper hooks rather than face-nailing through new slates, color-matched salvage slate, and lead-coated copper flashing on north-facing slopes.
Slate and tile roofs in Winnetka: how to decide what the roof actually needs
Most Winnetka slate and tile roofs are older than the people worried about them, and the cheapest correct answer is almost never a full replacement. Work through these six questions before you accept any proposal.
Natural slate vs. synthetic slate
Natural Vermont, New York, or Buckingham slate on a Winnetka estate home is typically an 80-to-150-year material, and its cost sits well above every alternative. Synthetic slate (moulded polymer products such as DaVinci or Brava) weighs roughly a quarter as much, installs on standard decking, and carries 40-to-50-year manufacturer coverage — but it will not read as convincingly at close range, and some preservation reviews will not accept it on a street-facing slope. The deciding factors are usually structural capacity, whether the roof is visible from the street, and how long you intend to own the house.
Sourcing and matching old or discontinued tile
Most Winnetka slate and clay tile roofs were laid with quarries and moulds that no longer exist. Matching comes from three places: salvage yards that stock reclaimed slate and Ludowici-era tile by colour and thickness, careful harvesting from a hidden slope on your own roof to patch a visible one, and current production that comes close on colour but rarely on thickness. Ask any contractor where the replacement pieces will come from before work starts — 'we'll find something' is not an answer.
Replacing individual pieces vs. whole sections
Isolated broken or slipped pieces on an otherwise sound roof are a repair, not a replacement, and are fixed with copper hooks or a copper bib rather than face-nailing. Section replacement becomes the honest answer when the fasteners have rusted through across a slope (nail sickness), when delamination is widespread, or when the underlayment beneath has failed even though the slate is fine. A slope where a third or more of the pieces move underfoot is telling you the section is done.
Underlayment and flashing are what actually fail
On a century-old slate roof the slate usually outlives everything under and around it. Felt underlayment, valley metal, chimney and dormer flashing, and step flashing all reach end of life at 40 to 70 years. A well-scoped Winnetka project often means lifting and resetting slate to install new underlayment and new copper or lead-coated copper flashing, then re-laying the original material. Galvanized valley metal on a slate roof is a short-term patch.
What to ask during the inspection
Where will matching pieces come from? Will new pieces be hung with copper hooks or face-nailed? What gauge and type of flashing metal, and soldered or sealed? Are the existing snow guards being reinstalled, and how? What is the fastener condition on the north slopes? Is any of this work inside a preservation or village review requirement? Ask for photographs of the specific defects, not a general condition grade.
When you need a specialist rather than a general roofer
A specialist is warranted when the roof is real slate or clay tile, when the flashing detail is soldered copper, when the roof carries towers, conservatory tie-ins, or curved slopes, when the house is inside a design review district, or when a previous repair used asphalt cement and mismatched pieces. A general asphalt crew can install synthetic slate competently; hand-work on natural slate and tile is a different trade. Tell us which material you have in the request and it is routed accordingly.
Roofing services available in Winnetka
Nearby Winnetka landmarks
- Tower Road Beach
- Hubbard Woods
- Crow Island School
- Winnetka Community House
- Skokie Country Club