Cedar Shake and Slate Roofing in Aurora, IL
The older streets near the Fox River, and up through Batavia, Geneva and St. Charles, still carry a good amount of genuine cedar and genuine slate. Around 13.5% of Aurora's housing stock predates 1940, which in this part of Illinois means a meaningful number of roofs that were never asphalt to begin with.
Both materials deserve better than being stripped and replaced with the cheapest available option, and both fail in ways that make repair the correct answer far longer than people assume.
Slate Fails One Piece at a Time
That is the single most useful thing to understand about a slate roof. Asphalt fails across whole slopes at once. Slate does not. Individual slates crack, slip or delaminate while the ones next to them have another eighty years in them, and the fixings usually fail before the slate does.
Which means a slate roof that is "leaking and needs replacing" very often needs a few hundred dollars of slates replaced and some valley and flashing work. We have talked people out of six-figure slate replacements more than once. The correct question on a slate roof is not "how old is it" but "how many are actually broken, and what condition are the nails and the flashings in".
Genuine replacement makes sense when the slate itself is delaminating widely, which some quarries' product does at seventy-five to a hundred years, or when the roof structure can no longer carry the load. Both are real. Neither is common enough to be assumed.
Cedar Shake and Shingle
Cedar in this climate wants to breathe from underneath, which is why the good installs sit on skip sheathing or a ventilated mat rather than solid decking with felt. Cedar laid tight on a solid deck holds moisture and rots from the back, and a great many 1980s and 1990s cedar roofs around Aurora were installed exactly that way. They are the ones failing at twenty-five rather than forty.
Maintenance genuinely works on cedar: keeping it clear of debris and moss, keeping overhanging branches off it, and treating it periodically. A neglected cedar roof and a maintained one of the same age are different products.
When cedar does need replacing, most people do not go back to cedar. The maintenance is real, the cost is high, and some insurers in Illinois have got difficult about wood roofs. Which leads to the next section.
Synthetic Slate and Composite Shake
These have got good enough that from the street most people cannot tell, and unlike ten years ago that is not a salesman's claim. DaVinci, Brava, F-Wave and the better composite shakes reproduce the thickness variation and the colour blend convincingly, and they weigh a fraction of the real thing.
The weight point is not a footnote. Natural slate runs 800 to 1,500 pounds per square. Synthetic runs closer to 250. On an older Aurora house where the framing was sized for slate, either works. On a house that has been re-roofed in asphalt at some point, going to real slate may need structural work, and going synthetic does not.
Costs, broadly: synthetic slate $1,200 to $1,900 per square installed, composite shake $900 to $1,500, natural slate $1,800 to $3,000 and up, cedar shake $700 to $1,300. All well above asphalt, all lasting far longer.
The Historic District and FoxWalk Rules
Anything inside Aurora's Historic District or the FoxWalk District triggers additional plan review at the permit stage. So does replacing structural framing or all the sheathing, which older roofs often need.
Practically: start earlier than you think you need to. A standard residential re-roof permit in Aurora is frequently issued the same day over the counter. A historic-district slate roof is not, and the material choice may be reviewed. If you are in one of the older streets near the Paramount or along the river, factor weeks rather than days.
Is my slate roof worth saving?
Almost certainly, if the slates themselves are sound and it is the fixings and flashings that have gone. Test it by looking at what is actually broken: a roof with twenty cracked slates and failed valley metal is a repair, a roof where slates are delaminating and flaking across whole slopes is genuinely finished. Any contractor who recommends full replacement without distinguishing between those two situations has not looked properly.
Can I get insurance on a cedar roof in Illinois?
Yes, but it has got harder and more expensive, and some carriers have exited wood roofs entirely or apply significant surcharges. Check with your carrier before committing to a cedar replacement rather than after, because discovering your premium is going up substantially is a bad time to find out. Class A fire-rated treated cedar helps and composite shake sidesteps the question entirely.
How long does synthetic slate last?
Manufacturers warrant fifty years and the products have been in the field about twenty-five, so the fifty is a projection rather than a track record. What we can say is that the failure modes that killed early synthetics, colour fade and brittleness, have largely been engineered out, and the ones we have installed over the last fifteen years look the same as the day they went on.
Been told your slate roof is finished? Get a second opinion before you accept that. Slate fails one piece at a time.
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Questions We Get About This
Do you repair slate, or only replace it?
Repair, and it is most of the slate work we do. Individual slate replacement with proper hooks or hangers, valley rebuilds, flashing renewal and re-pointing chimney counterflashing.
Can you match old slate?
Usually close enough. Reclaimed slate is available and often the better match for an older roof, since new slate from the same quarry has usually drifted in colour. On a visible elevation we will show you the match before fitting it.
Is cedar a fire risk?
Untreated cedar is a genuine consideration, which is why some jurisdictions restrict it and some insurers avoid it. Class A fire-rated pressure-treated cedar is available and is what we install when somebody wants a real wood roof.
Can you put asphalt over cedar shake?
No. Cedar is uneven and the shingles telegraph every irregularity, and you are covering a material that needs to breathe. It comes off, and typically the skip sheathing needs decking over before asphalt can go on, which is a cost people do not expect.
Available Across the Fox Valley
Cedar and slate concentrate in the older river towns, so this work takes us north along the Fox more than anywhere else.
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