The original flexible surface applied mat.

Peel & Stick for asphalt or concrete

Rigid surface applied detectable warning.

Superior durability

Industry’s best replaceable cast-in-place detectable warning.

Patented anchor system

Non-replaceable engineered for ease of installation and minimal air entrapment.

Four side-flange vents for solid install

All-weather cast iron plates.

Interlocking installation system

We bring ADA compliance to you, direct shipping and locao distributors. Request a quote.

Products to Meet Any Job Specification

Whatever the specifications of your job, Detectable Warning Systems has the product you need. With the flexible RediMat and rigid AlertTile® we can meet the needs of any retrofit, surface applied job. And for cast in place requirements we have the AlertCast – the best overall cast in place detectable warning available.

Superior Customer Service

With a highly trained staff we work with you and your customers during the entire project cycle. From design to bidding, procurement and installation – our team is with you all the way. We welcome the opportunity to partner with our customers to ensure 100% satisfaction on every job.

ADA Compliance and a 5-Year Warranty

All of our products are ADA compliant and meet or exceed ADAAG, FHWA, California Title 24, state and local requirements. And they are backed by a 5-year warranty covering defects in materials and workmanship.

International Projects

We have experience designing and supplying products for international applications. For Canada, our detectable warnings meet all Canadian Standards Association (CSA) requirements. In addition, we have supplied product for distributors, contractors and architects in Mexico, South America, Europe, Asia, the south Pacific and the Middle East.

Since 1994

Detectable Warning Systems has been a pioneer in manufacturing and providing innovative and economical truncated dome detectable warning products. Our products are all made in the USA and provide ADA compliant tactile warning surfaces for visually impaired pedestrians at a reasonable cost to contractors, cities, counties, transit authorities and other agencies.

Call us to discuss what products will best meet your needs.


Parking Structures – multi-level with drilling restrictions
Sidewalks – standard and radius curb ramps
Transit – platform edge and common areas
Retail – public safety and compliance
Top of Stairs – per local requirements
Apartments / Multifamily – resident safety
International – Canada, Mexico, South America, Europe, Middle East

Parking Structures with Raised Floor Drilling Restrictions

RediMat is the perfect mat for parking structures with raised floors and the associated concern or restriction with drilling into these upper floors.  For parking structures, we custom manufacture the RediMat so that no drilling or anchors are required to install and provide ADA compliance.  RediMats have been used for parking structure applications for years in major projects across the U.S. 

Helen Keller Foundation

We are very proud to partner with and support the Helen Keller Foundation! Detectable Warning Systems manufactures detectable warning products that are ADA compliant and meant to alert visually impaired pedestrians of their approach to street crossings and unsafe areas. Our mission directly coincides with the mission of the Helen Keller Foundation and we couldn’t think of a more worthy cause to support. Mar-Bal recently announced it will be donating a percentage of the sale of every DWS tile to The Hellen Keller Foundation.