SEI Industrial Chemical GPA-300 on 31,000 sq ft Concrete Block Wall

The approximate size of this retaining wall project is 31,389 square feet. The cement block wall was erected to be utilized as an embankment. Behind the wall are hundreds of thousands of cubic meters of organic fill to house a brand new Canadian Tire Superstore.
The builder/owner felt that the sheer height and size of the wall would be a prime target for graffiti. The SEI Industrial Chemical Graffiti Proofer was chosen amongst those considered due to its superior protective qualities of allowing graffiti to be removed without the use of chemicals. The normal 10 foot cut off line for graffiti protection has become an increased concern as taggers are using Super Soakers and other apparatus to apply graffiti at elevated heights.
By protecting the entire retaining wall with the GPA-300 Graffiti Proofer, the owner and surrounding residents will be able to enjoy a protected surface for years to come instead of a large permanent canvas for unauthorized graffiti spray paint, stickers and markers.
For more information please call (408) 402-5395 or email

SEI Industrial Chemicals Anti-Graffiti coating on 24,000 sq ft concrete sound walls

24,450 sq ft of precast concrete sound walls

The City of Sparks, a neighboring city to Reno, NV, utilized SEI Chemical’s anti-graffiti coating technology to protect 24,450FT2 of precast concrete sound walls in September, 2012. The project consisted of (4) individual walls, which would all receive an oxidizing stain treatment before being protected with (1) coat of SEI Sealer Prime followed by (1) coat of GPA-300 Graffiti Proofer®.

Josh Thompson, Civil Engineer for Atkins Global, headed up the project design. The City of Sparks requested Mr. Thompson spec the Graffiti Proofer as the anti-graffiti coating of choice for this project. As a sole-source specification could not be permitted, Mr. Thompson included the following:

Anti-Graffiti Coating shall be Seicoat Graffiti Proofer GPA-300 per NDOT QPL requirements, or approved equal. Alternate submittals will not be considered without meeting the following minimum requirements:

• Graffiti removal by wiping with a dry cloth or with light pressure washing. No release or
cleaning agents required.
• Non-sacrificial, non-yellowing and clear
• Allows expansion and contraction
• Meets the performance requirements of ASTM D6578, Level 10
• Included on Nevada Department of Transportation’s current Qualified Products List

All alternate product submissions ultimately fell short of the requirements and were not approved. The application of the Graffiti Proofer to the Vista sound walls provides the City of Sparks with the largest surface area, in Nevada, which allows graffiti to be removed without using chemicals.
For more information please call (408) 402-5395 or email


San Francisco Presidio Trust

The BSM-1600 Synthetic Membrane is unique in many ways, but to name a few, it is a single component (no mixing required), does not need a primer, low VOC (<50 g/L), water based, comes in 5 standard colors (plus custom color matches available) and can withstand vehicular traffic. This SEI Industrial coating bonds to asphalt, concrete, raw wood and other porous substrates and is highly resistant to abrasion, impact, moisture, chemicals and atmospheric salts. The anti-slip membrane has tremendous elongation and tensile strength and can be applied in only 1 coat. If it ever damaged simply recoat as the coating adheres to itself.
For more information please call (408) 402-5395 or email