Deck Cleaning - Uneven Results
I completed a new deck on our home in March of this year. The deck was stained with a popular and respected brand of transparent stain and protector per manufacturer instructions. I just attempted the first cleaning of the deck last week to remove minor buildup of dirt and some areas of mildew. Conditions for the cleaning were sunny and mid-80's. I followed deck cleaning instructions from this site, calling for warm water, oxygen bleach powder, and Borax to be applied and allowed to sit for a few minutes before rinsing. The deck was thoroughly rinsed several times as we cleaned each area and after all cleaning was complete. We did battle the sun and heat, with some areas drying quickly and not allowing us to soak them as long as other areas. After drying, we are seeing a wide range of shades of wood on the deck boards, from very light to quite dark. The stain appears to be in tact and there is no damage to the wood. Prior to cleaning there was some variation in shading due to the variations in the wood decking from board to board, but it is more pronounced now. I think I might need to do a second cleaning, perhaps on a cooler / more cloudy day, as I see brighter areas and darker areas on the same board, suggesting the cleaning was more effective (I scrubbed more or allowed the mixture to sit more before rinsing) in some areas than in others. I would appreciate the thoughts and suggestions of others as to what I might have done differently and to the steps we should take for a more uniform appearance. Thank you.