Questions tagged [corrosion]

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Whether and how to remove slag from stick welding crevices

I am learning stick welding and yet to learn how to make smooth welds without crevices. But I already have quite a few now and wonder what to do with them. I tried to remove the slag inside them with ...
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1 vote
1 answer
35 views

Corrosion on pipe?

This section of pipe has looked the same for a few years (perhaps the whole time I’ve lived here)Never seen visible leak or dampness. So am not sure if this is a leak or impending leak……does this ...
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Water Heater Connection Rust and Corrosion

Can the rusted connection simply be replaced? Or does the rust mean I need to get a new hot water heater?
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2 votes
2 answers
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How bad is this corrosion and what would cause it?

Not sure if this is a useful picture but I have some copper pipe that is green with corrosion / oxidation and wondering if this is something I should replace. And what the cause would be? Is it ...
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2 answers
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Is this pipe corrosion a problem?

Is this pipe corrosion a problem that needs to be fixed? This is one of the water connection for our hot water tank (gas powered). Thanks!
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3 answers
104 views

Can Electrical Leak into Copper Pipes Cause Corroison?

My Lg Washing machine is leaking electrical current into my copper water lines when idle. 16v from the cold water line and 3v from the hot line. After purchasing this washing machine, I began to ...
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How can I remove corrosion between aluminum and brass?

I am replacing the gas springs on my outdoor sun blinds, and have difficulty removing brass pins holding an aluminum lever. The sun blinds are about 16 years old and there is white corrosion visible. ...
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Apply base to rusted table and paint?

I have this iron table that seems really rusted, but that’s just a thin layer or rust. The table’s still extremely solid. I’d like to apply a base that will stop (or control) the rust and then paint ...
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Used coated sinkers in shed frame

I'm building a 10x14 shed with pressure-treated 2x4 frames. I just finished the frames when I realized that the nails I used - 12d 3 1/8" coated sinkers, are not recommended for use in pressure-...
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Not functioning circuits in home, many Breakers reading as bad but not tripped

Having intervented power issues in areas of the house went to breaker box multiple in Mass breaker failure. No I don't think they failed they are carrying voltage only 24 volts. While others are ...
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3 votes
1 answer
179 views

What corrosion protection for nails, screws and bolts?

Would someone please care to explain the pros and cons of galvanized (hot & electro), stainless, zinc plated, spray (cold) galvanized, and (paint?) coated fasteners? There seem to be different ...
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How to move nut that is corroded onto tap?

I'm trying to change a bath tap (faucet for our American friends). On the hot tap side, the nut which holds the tap onto the bath is seriously corroded, and I can't unscrew it. As always with bath ...
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Dialectric water heater connection

I noticed a lot of corrosion around the connection between the nipples coming out of my water heater and the flex connectors. The nipples are regular galvanized steel. Is this corrosion of dialectric ...
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Am I able to replace these water valves on my hot water oil heater?

We just moved into a new house. We had a plumber come out for a non related issue on out oil burning hot water heater and brought these corroded valves to my attention that he said needed to be ...
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3 answers
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Non-spray WD-40 equivalent? [closed]

I spray WD-40 on metal parts in a high moisture area to prevent rust. But in one particular case, I don't want the oil getting on other things in a tight area, so I'm reluctant to use the spray. Is ...
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6 votes
4 answers
1k views

How can I dry out and reseal this corroding railing to prevent further damage?

This railing on our deck is exposed to the elements (in Chicago, so rain and snow), and has corroded through. The railing is hollow, and it seems to be completely full of water. It's swollen near the ...
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1 answer
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Metal tubes stuck together: drilled a hole in one. How to get leverage?

I have an aluminum bicycle seat tube stuck in a steel frame. I have been using penetrating oils and heat and hammering and such to loosen the corrosion. Now I drilled a hole in the seat post, and can ...
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1 vote
1 answer
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How can a non-working corroded tub plunger with a broken linkage assembly in the open position be fixed?

I’ve read the helpful advice on bathtub plungers stuck in the closed position. However, I have a bathtub plunger stuck in the open position. The trip assembly has come away leaving the plunger in ...
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2 votes
2 answers
177 views

Anode for buried galvanized steel tube

I recently installed an trampoline in my garden. The inclination made it necessary to bury parts of the trampolines feet in the earth. Since matching replacement feet are hard to source I am ...
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Unfinished basement electrical re-wiring, protecting cables on cinderblock, also corrosion concerns

My basement has old electrical wiring, looks like it was a replacement for some even older knob and tube (which they largely left in place of course). While they did wire up lighting somewhat, though ...
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2 votes
3 answers
5k views

Protecting bathroom mirror from corroding around the edges

In my bathroom I have a beautiful illuminated LED mirror. It's now 10 years since I originally installed it - and over time, the edges have become de-silvered as the backing coat has corroded and ...
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0 votes
1 answer
410 views

Toilet flush button is corroded and gets stuck

My toilet flushing button gets stuck with one button extended. It doesn’t affect the toilets flushing but it is a little ugly. I’m very new to DIY so I’m not sure if I can just scrub the blue stuff (...
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1 answer
270 views

Boiler Valve Corrosion

I have a hydronic heating system in my house, and I noticed a valve on a pressure gauge on the side of the boiler is extremely corroded (see 3 pictures below). 1) Is there any purpose for this valve ...
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1 answer
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How do I use this plumbing connector?

I am looking to attach an unthreaded galvanized steel pipe to either copper or a new unthreaded pipe. See my previous post for details: Should this section of water line be replaced? Per https://www....
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1 vote
2 answers
962 views

Is corrosion a concern when hanging black iron pipe with copper hangers?

Can I hang black gas pipe with copper hangers? Is corrosion a concern? Example:
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1 answer
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Water Heater Help

I was woken to a pop and a electrical burning smell. Upon inspection I found the water heater breaker tripped. When I checked out the water heater I found whats pictured. My question is the cold water ...
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Iron bar set in concrete heavily corroded; how to mitigate?

I have a decorative concrete column (solid concrete with rebar) in front of a multi-storey house, about 10m hight. Said column is held by three thick steel bars (6 x 2 cm) that link it to the house, ...
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1 answer
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Can you identify the spigot attached to this water heater?

I have a corrosion problem on my new indirect fired water heater. HTP technical support, the company that makes the heater, wants to know the alloy of the spigots attached to the hot water inlet and ...
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Regarding greases for outdoor connections: Noalox for general use (not necessarily for aluminum)? Dielectric grease for outdoor receptacles?

I've googled this already and found many people saying that Noalox is only for copper to aluminum connections. I know that Noalox stands for "no aluminium oxidation" but brand names often change ...
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1 answer
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How to remove corroded faucet?

I am trying to replace my kitchen faucet but the nut holding it onto the sink is corroded and the nut won't budge! I have tried a basin wrench (as someone suggested here), wd40, hammering at those ...
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-1 votes
4 answers
500 views

galvanized or stainless turnbuckles for exterior wire rope fence?

I'm working on a wire rope fence that looks like this. The difference is that we live fairly close to the ocean, which means lots of salty air. I've bought 1/8" galvanized steel with plastic coating ...
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1 vote
2 answers
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Will steel continue rusting if it's completely covered in concrete?

Let's say I have a 5" piece of rebar in a rooftop that's exposed to the elements (ie.sun, rain, salt air, etc). After some time it will be covered in rust and pieces of rust can be scraped off. Let's ...
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Can I cover rebar sticking vertically out of the ground with something that would permit me to pour concrete over top of it?

First off, this project is free from review from inspectors; i.e. none of this has to be to code. I want to pour a concrete column. The column isn't structural - it's like a column you may find at ...
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1 vote
2 answers
568 views

Should I remove this gray layer on freshly bought steel?

So I bought this steel bar 240x5x0.5 cm and it has this kind of ugly, somewhat chippy surface: a dark gray layer. What is it? Should it be removed? In the picture, you can see how I'd sand it down, ...
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2 votes
1 answer
3k views

Painting over paint with rust spots coming through

I recently sanded down two beams to remove the rust and then painted over them with a "rust inhibitor" and then two coats of a basic ceiling paint. However there are now numerous rust spots coming ...
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2 answers
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How to stop copper pipe corrosion (green copper stain in sinks and tubs)

I have couple of questions to the experts. I see copper stains (green/blue) in my sinks and at shower tubs. I had comprehensive water analysis done. Water was sampled from tap after flushing. My water ...
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3 answers
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How should I remove corrosion like this from radiator connections

In the process of replacing a radiator and there is a fair amount of corrosion around the connections. I plan on scrubbing as much off as I can with sandpaper or steel wool, but is there a ...
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Battery terminal in wireless light switch corroded

I have a wireless light switch in my garage which uses 4 triple-A batteries. When the switch quit working recently, I took off the cover to replace the batteries and saw that the terminals were all ...
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0 votes
2 answers
101 views

Deteriorations in rear of gas dryer

I opened up the rear of my Kenmore 80 Series gas dryer and discovered the following aspects of deterioration: Corrosion near the bottom of the heater box. See photos 1 and 2. Crumbling of the foam ...
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3 votes
2 answers
2k views

What happened to my garbage disposal?

I have an In-sink-erator model garbage disposal with a black plastic housing. After fixing a jam (a shot glass that fell into it while running, quite destroying itself), I noticed that there was water ...
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2 answers
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What Solutions are Available for Marble Floor Etching / Corrosion

Below is a picture of what some of the tiles that have corroded over the past 25 years of use, look like in the our house. I read this QA post, however, am not comfortable with the solutions provided,...
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3 votes
1 answer
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Water heater inlet corrosion after 4 years? Installer claims they did everything right

Similar to this question, I've got severe corrosion on my 4 year old water heater inlet. I was having the heater flushed when this was discovered, and the person flushing it said it was caused by the ...
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1 vote
1 answer
103 views

Gripping a 45mm / 1.75" metal disc to allow replacement of corroded toilet lid fixtures

We wish to replace the corroded fixtures in our bathroom. It is a corner fit toilet with very little room for manoeuvring tools on the underside. I need to be able to hold the plastic washer in place ...
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What is this blue build-up on my pipes, and is it an issue?

I've looked around the intertubez, and think this MIGHT be galvanic corrosion, but there was NO sign of it when we bought our 1930's house 5 years ago. The Taco pump WAS replaced 3 years ago (that's ...
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1 vote
0 answers
72 views

Copper corrosion, well water

My well water pH is 7.06 as measured by an accurate and calibrated tool used for wine making. I have around 15 gpg of hardness. My question is why I am getting between .5 - 1.0 mg/L of copper in my ...
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2 answers
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Remove Fastener Nut for Kitchen Faucet (Rusted?)

Trying to remove my Kitchen Faucet. It's around 10 years old. The last set is to remove the Nut that holds a brass plate to fasten the faucet to the kitchen counter. The problem is, i think the nut ...
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2 votes
4 answers
38k views

What is this black stuff that appeared on my drain after cleaning with a bleach-based cleaner and how do I clean it?

Recently, I had problems with a pinkish/orange-colored bacteria (Serratia marcescens) in my bathroom. The bacteria would show up in my shower and sink, specifically near or around the drains. To ...
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emery cloth or sandpaper to remove corrosion

I'm considering to replace a stop-and-waste valve in the basement, where copper pipes are installed. So I need to clean the corrosion off the pipe. My question is if I could use fine-grained sandpaper ...
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2 votes
1 answer
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remediate corroded fins on AC, if it possible - how?

The fins on my external AC seem to be heavily corroded by misplaced canine excretions: Two 50 lb male dogs, about 5 years worth of misplacment. As is, the AC cools the house more than adequately, ...
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How well does AA-8000 alloy resist pitting corrosion?

Aluminum corrosion in salty environments often takes the form of a surface pitting -- while this does little to damage the structural value of the aluminium, it can be an issue for mating contexts. ...
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