New Magnetized Rubber Riser For Easy Installation
Typical installation in less than 5 minutes. No cover removal required.
Top Hat Magnetic Risers* fix low manholes fast, without the crew, equipment, or disruption of traditional methods. Made from 100% recycled tire rubber and backed by a 5-year guarantee, they’ve been solving low manhole problems across 15 states since 2001 — and now features magnetic riser installation as standard. Patent pending.
25
+
Years In Industry
2000
+
Units Delivered
1000
s
Of Happy Taxpayers
What are Top Hat Magnetic Risers*?
A rubber manhole riser raises a low manhole cover to road grade — eliminating the bump, noise, and vehicle damage caused by low manholes. Top Hat Magnetic Risers* are made from 100% recycled tire rubber and attach directly to the existing manhole cover with no excavation, no reconstruction, and no manhole cover removal required.
Top Hat’s patent-pending magnetic risers typically install in less than 5 minutes with a single center bolt and no heavy equipment. Customizable to fit virtually any manhole casting, they can be used before or after paving as a temporary or permanent solution.
Why Choose Top Hat Risers
Top Hat Magnetic Risers* are built to make low manhole adjustment faster, cheaper, and less disruptive — without sacrificing durability or longevity.
Top Hats Save Money
Save up to 80% compared to traditional manhole adjustment methods while reducing damage to snow plows, vehicles, and bicycles.
Guaranteed Durable
Backed by a 5-year guarantee and engineered for durability in high-traffic conditions — UV, water, weather, and snowplow resistant.
Magnetic Installation
Typically installs in less than 5 minutes with no cover removal and no heavy equipment required. Patent pending.
Eco-Friendly Solution
Made from 100% recycled tire rubber, each Top Hat Magnetic Riser* typically diverts 1-2 tires from landfill — durable materials put to lasting use.
Custom Fit for Any Manhole
Available in multiple diameters and thicknesses with tapered configurations, Top Hat Magnetic Risers* fit virtually any manhole casting.
Reusable & Flexible
Remove, reposition, and reinstall as needed. Many communities keep Top Hat Magnetic Risers* in stock for quick adjustments on demand.
Ready to bring safer, smoother roads to your community? Contact us today to learn more about how Top Hat Magnetic Risers* can make a difference.
Testimonials
Trusted by Communities Across the US
American-made and proven in the field since 2001, Top Hat Magnetic Risers* have helped communities across 15 states fix low manholes faster and for less than traditional methods. The feedback from public works directors and street superintendents has been consistent — smoother roads, fewer complaints, and a product that keeps performing long after installation.
City of Corning
We’ve been using and re-using Top Hat Risers throughout Corning for over four years, and they have shown remarkable longevity and durability—even withstanding snowplow blades through harsh winters.
Brian McCarthy
Assistant Superintendent of Public Works
City of Ithaca
The Top Hat Risers installed in 2003 are still in place after seven years on streets with over 9,000 vehicles per day—without a single failure. They’ve made a significant difference in the smoothness and safety of our roads.
Richard Ferrel
Assistant Superintendent For Streets and Facilities
Latest Blogs and Insights
Top Hat Magnetic Risers*, so smooth you’ll aim for them!
Ready to fix your low manholes for a fraction of the cost? Whether you’re a public works director managing a backlog of adjustments or a contractor looking for a faster install method, we’re here to help. Get in touch, and we’ll find the right fit for your project.
