Acid Staining Concrete - Methods for Success

Concrete acid stain is true to new or old, plain or colored concrete surfaces. One can choose from 10 basic colors. Even though they are often called acid stains, acid isn't ingredient that colors the concrete. Metallic salts in a acidic, water based solution interact with the concrete to permanently hue of the surface. Siliceous aggregates such as gravel or sand, don't react with the stain. Surfaces containing an increased content of cement will react many with less cement yielding more intense colors. _stained_concrete_
Since each surface differs from the others, results may vary from surface to another. We always recommend testing a tiny area to determine how the final result will appear. Be aware that the final color won't be apparent until the sealer continues to be applied. With wood stain you'll probably still see the grain from the wood through the stain, acid stain is very similar to wood stain as you can tell all defects or finishing marks through it.
Factors that could affect the final results include:
Cement properties and amount used, Admixtures and design of aggregate used.
Concrete finishing methods, concrete age, and moisture content
Porosity and Texture with the surface
Weather conditions in the event the stain is applied
Concrete acid stain finishes do not require much equipment to the application. The applicator usually uses a garden sprayer that is completely plastic. Some desire a fine bristle brush or a combination of both. All equipment that will come in contact with the acid stain, like sprayers, must be resistant to acid. Brushes to use or spread the stain should be resistant to acid, and also colorless bristles.
Workers will need to have the proper safety equipment, including acid-resistant gloves, goggles, boots and masks to filter the acid fumes. A quality wet vacuum is mandatory for cleaning. Golf spikes will also be recommended because footprints will demonstrate through and create undesirable markings inside the final appearance.
Surface Preparation
Surface preparation is the most important step in any decorative concrete application. It is necessary for the immediate and lasting performance of all decorative concrete applications. Poor surface preparation can turn a simple process in to a difficult and lengthy repair.
Initially you will need to throw some water on the surface in several places to see if the concrete accepts the lake. If it is not absorbed by concrete, you may have a sealer in your surface. If so, you will have to strip the surface using EnduraPrep Coatings Stripper. This stripper is ideal for removing coatings for example paint or acrylic stains and colorants. When there is not a sealer at first glance, but it will not absorb water, your surface is too dense. This is usually caused by over troweling in the surface when the concrete was poured. It is crucial to condition these kind of surfaces to accept the acid stain. Surface conditioning is truly the key to success. If it won't accept the water, it's going to certainly have to be conditioned. Sometimes, very dense surfaces must be conditioned twice. In the event the surface is conditioned properly, it ought to feel like sandpaper of 120 grit. To use EnduraColor Reactive Concrete Stain, Avoid using hydrochloric acid at first glance because it would deprive the concrete from the necessary minerals to interact with the acid stain. An adequately conditioned surface can be accomplished using EnduraPrep Concrete Surface Conditioner, a good alternative to the typical acid etching.
Finally, we're going to wash the surface with EnduraPrep Cleaner and Degreaser. The outer lining must be clean and free of grease and oil, drops of paint, taping adhesive residue, caulk, cement, or any other surface contaminants. Everything remains on the surface will affect the final result of the surface. EnduraPrep Cleaner and Degreaser is very useful for cleaning any surface contaminants. You'll be able to dilute 10 to at least one for cleaning your surface and rehearse more potent for persistent surface contaminants.
If patching is critical, you should use a material with low shrinkage that can accept the stain. A final result will always show these patches. The property owner must be aware of this.
Decorative patterns with templates can improve the appearance of stained surfaces. The timing of the operations, however, depends on the desired effect. If you want the final appearance to be as even as possible coloured, cut lines and patterns after staining is complete. Stains penetrate differently around cuts and indentations. If you would like there to be a color change at the pattern line, cut the line first to form a barrier to stain movement. If sawed joints will probably be grouted, complete the staining and sealing before grouting to help prevent the stain from coloring your grout.
Patterns are often arranged in pencil or chalk. Mark only where you will cut. Also don't use chalk that is difficult to remove. Many tools are for sale to cutting pattern lines in concrete. Most installers use grinders and hand saws with tables, riding against helpful tips. A 1-1/2 "extruded aluminum" L "angle, for sale in most hardware stores, constitutes a good guide. Diamond blades for dry cutting do minimal harm to the edge of the cut. Dust Collectors that put on grinders and saws are extremely useful to acid stain applicators.
If patterns are cut before staining, cut prior to cleaning the surface just before staining. Saw dust containing free lime can bind for the surface, causing distortion. If cut after staining, accomplish that after the first coat of sealer may be applied.
Applying the Acid Stain
New concrete must solution for 28 days before starting work. With regards to the type of concrete, temperature, etc., stains is true in as little as 21 days.
If you apply the stain, think about the following:
Humidity and moisture content will affect the stain reaction. For color consistency, ensure that the moisture content of concrete is the same for all surfaces that are stained.
Staining, sealing, and since the surface before and after other construction trades adjust them will save on preparation and cleanup, supplying you with a better looking installation.
There are numerous ways to apply the stain, both ways offering an alternative final appearance. Here are some application guidelines:
Sprayers usually are used to apply the stains, nevertheless they must be designed for acid and also have no metal parts. Acid will begin to destroy metal parts and may even affect the color of the stain. Work with a spray tip using a circular pattern, spraying in a pattern that goes from left to right then from right to left, with someone using a large medium bristle brush to function the stain to the surface just behind the spray. It is important to scrub inside the stain and not just push it around. Yet another spray pass just behind the scrub removes brush marks. This technique ensures good penetration and minimal marking from spraying or brushing.
EnduraColor Reactive Stain Extender may be used to dilute the stain to achieve lighter colors.
Acid stain applied having a brush will penetrate well, but be careful to minimize brush marks, that are usually regarded as undesirable effects. Exactly what is the method of applying stain, be sure to completely cover the nearby areas to avoid accidental staining. Spillages can be hard, and in some cases impossible to remove.
The growing interest in acid stained surfaces is in the direction of more subtle effects. Applicators often dilute the stain with EnduraColor Reactive Stain Extender to generate less intense effects. For example, some applicators often apply the stain with a working dilution of 80% (20% stain extender). In this instance, the contractor can gradually build-up the color to meet owner expectations. Second and third colors can be added in the same way to make a multiple color overlay.
Part of professional applicators find that the addition of a concrete overlay just before staining is the best solution for concrete surfaces that show damage or have been mistreated during construction. Overlay materials of may be stamped, textured and/or stained to produce a new range of decorative options. Overlays are highly resistance against cracking and wear. As with all stain, it is wise to make a sample in an inconspicuous area on a single surface to ensure compatibility involving the overlay and the stain, after which obtain approval in the owner if necessary.
Cleaning and Neutralization
As soon as the Acid stain reaction is done, a layer of acidic residue will remain on the surface. This residue ought to be completely neutralized using EnduraPrep Neutralizer. Failure to completely neutralize the surface may prevent the sealer from sticking to the surface. Use a white cloth after neutralization to check for residue. If, after wiping the top with the white cloth, you might have color on the cloth, then you'll need to scrub and rinse the outer lining until you can no longer wipe colored residue through the surface. Furthermore, utilizing a pH meter to test pH of the surface is a good way to ensure that the weather is ready for the next part of the implementation of clear sealer.
Sealer Application
External stained surfaces are frequently sealed using acrylic sealers in order that the moisture can escape from the slab. Solvent-based acrylic sealers generally are more effective than water-based for use outdoors. A good application usually consists of two thin layers of a clear acrylic sealer for optimum results. A wise accessory the acrylic sealer would incorporate applying Endura Seal Floor Finish. This adds a sacrificial coat that adds shine giving you general wear and slip resistance. In high traffic areas you could consider using a high-performance sealer. Top rated Sealers (epoxy and urethane) tend to be harder than ordinary acrylics, however they are much more expensive also. For application instructions keep to the directions on the label from the sealer you have chosen.
Owner Approval
Regardless of the limited color palette, acid stain finishes are increasing in popularity. Today, homeowners are inclined out of their way to install the concrete, just so that they stain their surface. Acid Stained floors are very easy to clean and maintain. Popular uses of acid stains include concrete counter-tops, sinks and showers, plaster and stucco walls, both in and out of. Acid stain will chemically react with any cementitious material. _stained_concrete_