Hi there. I would like your professional thoughts on the red oak mismatch and blistering at the joints.
In October 2015 I hired a licensed hardwood floor contractor to lace new material into our existing 1.5" red oak flooring. The scope also included to refinish our existing red oak floor.
The floors were sanded, water-popped, stained with Minwax Special Walnut from Home Depot, first coat of Synteko Swedish, second Glista Gold Seal, and then Light Scent Glitsa Gold Seal. The contractor did a third coat because there was debris and puddling in the second coat. The work was not continuous since our whole house was being remodeled. Weeks would pass between the installation, sanding, and coating. Rosin paper and cardboard protection was laid down between the major steps to protect the floor from other trades.
The third coat (Low Scent Glitsa Gold Seal) was applied in March 2016. A few months later I began noticing blistering/bubbling like this:
More concerning is what looks like a mismatch in red oak grade. Here are pictures of the original floor with the recent stain and finish.
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