SpecEtch
Horizontal surface retarder
SpecEtch is a spray-applied, chemical surface retarder specifically formulated to expose the aggregate in freshly placed horizontal concrete. SpecEtch is designed to not alter the natural color of the aggregate or concrete, making it ideal for creating decorative finishes.
- Ready-to-use
- Does not alter natural color of aggregate or concrete
- Non-flammable, VOC Compliant
- Red dyed
- Typical etch is 1/4” to 3/8”
- Recommended for mix designs with 1/4” to 1/2” aggregate
Application
- Preparation: Float, screed, or trowel the concrete surface level but avoid overworking, which may drive the aggregate below the desired depth.
- Application Rate: Approximately 150 square feet per gallon. Apply evenly as soon as surface water has disappeared using a garden-type sprayer, avoiding puddles.
- Curing: Cover the treated area with plastic sheeting (preferably black), ensuring the edges are secured. Allow curing for 12 to 24 hours depending on temperature and conditions, periodically checking the set of the concrete.
- Exposure: Once the desired etch depth is achieved, remove the plastic and flush the surface with a garden hose and stiff broom. A pressure washer may be used carefully to expose the aggregate.
Packaging
- SpecEtch is available in 55-gallon drums and 5-gallon pails.
Shelf Life
- The shelf life of SpecEtch is one year from the date of manufacture when stored in properly sealed containers.
- Protect from freezing and store in a dry environment.
Coverage
- Rate: 100 – 200 square feet per gallon, depending on application techniques and surface conditions.