Cause

The main culprit of stain bleed back is failure to allow the stain to fully dry. Unfortunately, it can be difficult to ascertain whether or not stain has completely dried, because while it appears dry on the surface of the wood, an abundance of stain deep in the cell cavities is often still liquid.

Rushing to coat over undried stain too soon will only exacerbate the issue, as the stain that has “bled back” and the trapped solvents therein can create severe long-term issues, including poly-beading, peeling, and even complete finish failure.

Prevention and Testing

The only way to prevent stain bleed back is to allow stain adequate time to dry. It is also critical to avoid pouring stain directly onto a wood surface or allowing pools to sit, both of which cause stain to soak down into the cracks between boards.

Always read and apply stain following the manufacturer’s application instructions. Take note of temperature and humidity levels, as these can affect drying times. There are several options for testing that the stain has dried, including:

• Wiping the floor with a clean rag to detect wet stain.
• Using moisture meters are always recommended, but they can be inaccurate in testing whether stain is ready to coat—especially over cracks. They can also be affected by certain pigments or solvents in the stain.
• A less-well-known secret is using a vacuum hose directly on the stained floor on those areas that would be the most likely to still be wet, such as cracks and knots, to bring any undried stain to the surface. If excess stain appears upon vacuuming, allow the floor more time to dry and retest before proceeding
  

The unique nature of waterbased stains, like Basic Coatings® HyperTone™ Stains, will greatly reduce bleed back and related issues.

Resolving

Once bleed back happens, it can sometimes be amended by aggressively screening the floor and exposing the trapped stain. After allowing time for it to fully dry, touch up any color issues and recoat. If extensive stain bleed back has occurred below a finish film, however, the floor will require a complete re-sand.

If you have questions about stain bleed back or other issues you are experiencing, please click here, fill out the online form, and your Basic Coatings Regional Manager will reach out to you.

Photos courtesy of NWFA’s Problems, Causes, and Cures (3rd Edition, 2018).

Tinting Finish

For residential, commercial, and sport floors, contractors traditionally stain the properly prepared bare hardwood, followed by (a) coat(s) of sealer, and then finish.  This is still the predominant method to change the color of hardwood flooring.

Some contractors, however, have begun sealing the floor first, then applying coats of tinted finish. The benefits are numerous:

1. On the front side, this process is faster and provides greater control over the depth and consistency of color. 
2. On the back side (when it’s time to re-sand the floor), there’s less work, because contractors don’t have to take off as much of the top layer of flooring to remove the stain and/or worry about the stain seeping further into the tongue and grooves. 
3. Plus, because less sanding is required, more sandings are possible, saving customers significant costs over the life of the floor.

HyperTone Stains is roughly 10% of the cost. When you add the cost of finish plus stain, there’s a whopping 23% savings!

But the advantages don’t stop there.

Spurred by all the buzz, we worked with a sport contractor to quantify the benefits in terms of their savings.  We kept things simple—1 gallon of finish with comparable paint and stain levels—and the results showed that HyperTone Stains is roughly 10% of the cost. When you add the cost of finish plus stain, there’s a whopping 23% savings!

Paint Versus Tinting Finish

Although stain was applied to plenty of sport floors in the past, use skyrocketed once the MFMA recognized the practice at their convention in 2018. While paint for game lines and logos continues to be the dominant process, we have encountered sport floor contractors using a heavier load of HyperTone Stains to tint finish instead—again, with various upsides:

1. Using the same product for lines/logos as the finish could reduce chipping that is often seen with paint (time will tell if this holds true, but so far, so good).
2. Significant reduction in the cost of paint—both in the number of gallons purchased and the paint gallons that go unused due to shelf life. 
3. When the paint lines or painted logos are abraded (to prepare to accept finish coats), the heavily pigmented colored dust from the paint can contaminate adjacent colors (or flooring), which can be tough to prevent or remove (for example, a bright red paint logo contaminating the adjacent white).  When HyperTone Stain is encapsulated into the finish and used like a paint, the pigment load is reduced significantly, and the issue is virtually eliminated. 
   

We again calculated the cost savings when working with a contractor to tint the finish with heavier pigment loads, so the product could be tested in lieu of game line/logo paint.  When comparing 1 gallon of stain plus finish with comparable game line paint, tinting finish was roughly half the price! While this may or may not be a savings large enough to make the switch for any one job, just like tinting the finish above, the contractor sees tremendous cost advantages over the entire season. 

When comparing 1 gallon of stain plus finish with comparable game line paint, tinting finish was roughly half the price!

Ultimately, the jobsite benefits and cost savings have more contractors rethinking processes to improve their offering. If this is something that might interest you, let us know by clicking here to fill out the online form. We’ll be more than happy to work with you to see if these or other innovative HyperTone Stain application methods could enhance the value of your operation, as well as calculate your potential savings.

To learn more about HyperTone Stains, please click here.