Makers of ADA compliant tactile warning surfaces

Since 1994, Detectable Warning Systems has been a pioneer in manufacturing and providing innovative and economical detectable warnings. Our durable, installer-friendly products are for surface applied or wet concrete applications. Our products include RediMat, AlertTile, AlertCast, and Cast Iron detectable warnings.

All 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. Having been a contract manufacturer for the AlertCast and AlertTile brands, Mar-Bal, Inc. acquired AlertTile, Inc. and Detectable Warning Systems in 2018. These two companies are now operating as one company under the Detectable Warning Systems brand.

Detectable Warning Systems has selected G P Roadway Solutions as our best dealer for the Hawaii territory. With stores across Hawaii and sales personnel who can best represent the Detectable Warning Systems line of products, G P Roadway Solutions has been the best representatives in Hawaii and the Pacific Rim.