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Brick takes longer to dry than less porous materials like concrete. If you are waiting to spot clean, a full day of mild weather should do the trick. If you are waiting to paint or apply a finish or sealant, give it three to four days to ensure the brick is absolutely dry as a bone. You don’t want any residual moisture whatsoever before laying down paint or sealant. 

It is possible to clean gutters with a pressure washer but work with a maximum psi of 1,800 to minimize the risk of damaging your eavestrough. And, instead of climbing a ladder, it’s safer to use gutter elbow extensions. These avoid the risk of the machine’s pressure causing you to lose stability while up high.

Do not use bleach when pressure washing, either in the machine or on the driveway itself. Bleach in a power washer will corrode the seal and nozzles of the machine. Spraying bleach (whether out of the machine or on the driveway itself) blasts bleach into the air. Bleach can be highly dangerous if inhaled, and it can kill plants, flowers, and neighbors' animals that accidentally ingest it. 

It is best to power wash your deck and sand it, as cleaning removes grime, mildew, and dirt, while sanding refreshes the wood and allows the stain to penetrate. You should clean your deck first, sand it, and then stain it. You should clean your deck annually, while sanding and staining only needs to be done every three years.