Blue Water Dripping Off Siding

J channel is a poor design if not flashed well it allows water to get in behind siding.

Blue water dripping off siding.

Mild soap and water with a soft scrub brush is sufficient for general dirt and grime. If you train the hose so it shoots water upward into the bottom or vertical laps of the siding it might. During a very heavy 2 days of rain water began running from between pieces of siding. The shingles should be hanging about 1 4 inch to 1 2 inch beyond the drip edge so this may be your problem.

If you see the stepflashing drain behind the siding the paint under the butts will keep it from draining out and still if the lap is below the first stepflashing all the water will drain behind. Water quality and even improper electrical grounding hasten corrosion adding excessive amounts of dissolved copper to the water coming out of fixtures. Bear in mind that vinyl siding is designed to keep out water that falls from the top down. Some areas were extremely heavy while others were just a single streak.

Blue or green staining occurs exclusively with copper pipe and fittings including brass which is copper plus. Significant water buildup can lead to leakage behind the channel and siding. At some point in the past an owner had vinyl siding installed over old siding. Zinc and is caused by the corrosion and dissolution of the metal itself.

If there is no way for it to drain the channel holds this water along with any dirt that was on the outside of the house. Since water runs downward unless it s being driven by strong winds the standard method for creating water resistant vinyl cladding is to start at the bottom and work up. Water should not be allowed to run down the siding. Water runs down the siding and can collect in the j channel.

It s usually safe to use a power washer but it should be used with care as it can force water behind the the.