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The average is between 2.00 and 2.50 a square foot. This includes powerwashing, detergent, and stain. Also, this is for your basic spindles on the railing.

David

Depends on how professionally you want it done. My company PressurePros, inc specializes in deck restoration. We apply a cleaning agent that emulsifies old stain, kills mold and softens grayed wood to allow us to use very low pressure to wash. After the deck is completely washed we follow with a pH balancing neutralizing agent. That gives the stain better bond and gives you an even finish. We then sand all handrails before applying two coats of tinted oil based, VOC compliant sealer.

Handrails will account for 6 s.f per linear foot of measurement. A 10x10 deck would be 100 s.f on the floor plus 210 s.f of rail. That does not include stairs or add-ons like trellises, planter boxes and benches. Our price is $1.60-$2.00 per s.f.

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Q: What is General cost per square foot to stain a deck?
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