# ASTM D4258 and D4259

Source: https://coatmentor.com/standards/astm-d4258-d4259/ · Updated 2026-10-14

Cleaning concrete (D4258) and abrading it (D4259) before coating.

**Publisher**: ASTM International

**Area**: Concrete

These two practices are the first steps in preparing concrete for a coating.

- **ASTM D4258** cleans: broom, vacuum, air blast, water, detergent or steam remove dirt, oil, grease and loose material. It does not change the surface profile. Used alone it suits only light-duty service, not immersion, mechanical loading or the best bond.
- **ASTM D4259** abrades: grinding, impact tools, water blasting or abrasive blasting remove laitance and weak concrete and leave a roughened surface for the coating to hold.

## The order

Remove oil and grease first. Abrading an oily surface drives the contamination into the concrete. Acid etching (ASTM D4260) is the other way to create a profile; after it, the rinsed surface is checked for pH with ASTM D4262.

**1** practice item in the members area mentions ASTM D4258 and D4259 (CIP 2: 1).

## Related

- **Concepts:** [Surface profile (anchor pattern)](https://coatmentor.com/learn/surface-profile/) · [Surface cleanliness grades](https://coatmentor.com/learn/surface-cleanliness/)
- **Standards:** [ASTM D4262](https://coatmentor.com/standards/astm-d4262/) · [NACE SP0892](https://coatmentor.com/standards/nace-sp0892/) · [ASTM D7234](https://coatmentor.com/standards/astm-d7234/)
- **Defects:** [Efflorescence](https://coatmentor.com/defects/efflorescence/) · [Bugholes (surface voids in concrete)](https://coatmentor.com/defects/bugholes/) · [Laitance](https://coatmentor.com/defects/laitance/)

## About this page

This page describes the subject of ASTM D4258 and D4259 in our own words; it does not reproduce the standard. For the full text, buy the current edition from ASTM International. Checked on 2026-10-14; errors go in the [corrections log](https://coatmentor.com/method/). CoatMentor is an independent study aid. It is not affiliated with ISO, AMPP, SSPC, NACE International, ASTM or FROSIO.