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41 votes
Accepted

Why not put pipe dope on female thread?

The pipe dope on the inside threads would be mostly pushed out of the threads into the fitting. Now that blob ends up migrating to regulators and valves causing failures. If only applied on the male ...
Ed Beal's user avatar
  • 103k
17 votes
Accepted

Stains in grout

As suggested by @Ecnerwal, I wrote to Custom Building Products' customer support. Got a reply within 15 minutes: The isolated areas look to be a bit of sealer residue that might not have been wiped ...
Martin Argerami's user avatar
17 votes

Why not put pipe dope on female thread?

The idea that a fillet of pipe dope as shown in the figure would enhance sealing is flawed. The pipe dope is a semi-liquid; it won't stay in place unless held there by some mechanical force. The ...
Greg Hill's user avatar
  • 30.8k
16 votes
Accepted

How do I clean sealant/silicone from a glass mirror?

Wait until it dries and use a razor blade to scrape it off.
RQDQ's user avatar
  • 723
8 votes

What can I use as caulk that a cat won't destroy?

Rub a little Tabascoâ„¢ sauce or other hot sauce of your choosing on the caulked joint. That will cure most critters of chewing on things they shouldn't. Granted, it's a bit odd that the cat chooses to ...
FreeMan's user avatar
  • 47.4k
8 votes

How can I seal improperly installed vinyl tile joints?

Do not use any type of sealer in the seams. It is not needed and will void any warranty from the manufacturer. These type of floors work very well just as they are designed. Adding a sealer may ...
RMDman's user avatar
  • 30.8k
7 votes

Is it a bad idea to temporarily caulk a toilet base leak?

It is a very bad idea to caulk around the base of a toilet. It is an even worse idea to caulk around the base of a toilet with a known seal leak. Do not wait, pull the toilet up and replace the seal ...
Jimmy Fix-it's user avatar
  • 35.9k
7 votes

Stains in grout

Did you use all the grout at once? Some grouts aren't dry mixed well at at the factory. If you read the fine print it will say to mix the dry grout BEFORE adding water to. So if you do it in ...
Steve Wellens's user avatar
6 votes

What can I use as caulk that a cat won't destroy?

In the bath tub the only joint needing caulk (commonly) is the wall/tub intersection. If your pet only is interested in pulling out caulking you might try repairing the joint with silicone, but than ...
ojait's user avatar
  • 11k
5 votes
Accepted

Shed with gaps at the top, wasp nest come back every year

Wire mesh is a good idea in that it maintains the same level of ventilation offered by the current openings. Only you can decide of the ventilation is necessary or desired. I could see problems of ...
Michael Karas's user avatar
  • 65k
5 votes
Accepted

New toilet fill valve's plastic back nut not compressing rubber sealing washer enough to seal cistern inlet hole

First off, and most important, get rid of all the sealant. You can carefully scrape it off with a razor blade or sand it off with some sand paper/emery paper. Make sure you have assembled the sealing ...
JACK's user avatar
  • 81.7k
5 votes

Is it normal for sink sealant to be soft like peanut butter?

That's called plumber's putty. It gets used between the drain and the basin, but usually the excess that squeezes out when the drain ("tailpiece") gets tightened is cleaned off. I'm ...
Aloysius Defenestrate's user avatar
5 votes
Accepted

Sealant for exterior water line into garage

When I did my water line passing into my house through a concrete wall I left a square knockout in the form work. After stripping the forms and running the pipe through we filled the void with ...
Fresh Codemonger's user avatar
5 votes
Accepted

What is the sealant around this shower arm, and should I replace it when I replace the arm?

The tiles behind the shower form a waterproof layer that protects the structure of the house against water damage. That seal completes that layer and makes sure no water makes it back in there. In ...
MiG's user avatar
  • 2,370
5 votes

How can can I repair peeling shower drain coating?

This white coating isn't actually sealant. The seal to keep water from leaking is either some plumber's putty under the rim of the drain or a foam or rubber gasket (and yours is probably plumber's ...
FreeMan's user avatar
  • 47.4k
5 votes

Caulking a Large Gap (Shower)

This isn't a job for caulk. Flat tape to the tub using setting-type joint compound. Pre-fill the gap first, then set the tape tight to the tub surface (or nearly so). Mask the tub before you begin for ...
isherwood's user avatar
  • 139k
4 votes

How do I clean sealant/silicone from a glass mirror?

On the mirror specifically, you may be able to use acetone solvent, however this may harm the splashback. If you have extra you can test, but it will not harm glass My go-to solvent for cleaning ...
Richie Frame's user avatar
4 votes

Joint between Asphalt Driveway and Block Foundation Sealant

The brand you mentioned (and other brands) make a self-leveling polyurethane horizontal joint sealant. It's applied from a standard or jumbo caulking gun, but once applied it flows and levels out like ...
MTA's user avatar
  • 11.4k
4 votes

Plumber's putty or silicone for tub drain?

Plumber's putty is used (in the modern world) to keep gunk out of cracks and little else. It's not a primary drain seal strategy. The rubber gasket is the drain seal. Putty would just aid in cleaning ...
isherwood's user avatar
  • 139k
3 votes
Accepted

How can I prevent water from beading on roof drain channel?

Beading isn't a problem. If it was, a persistent rain would also be a problem. Chances are the oils on the surface will eventually be removed by weather and the beading will subside anyway.
isherwood's user avatar
  • 139k
3 votes
Accepted

Non-Permanent Plastic Pipe Sealant or Join Improvement?

It appears to me that since it is on the roof, subject to extremes, that the joint needs to withstand the expansion and contraction of the PVC pipe. That joint you are referring to is just that, it is ...
Jack's user avatar
  • 35.5k
3 votes

Sealant for external outlet

Outdoor receptacle boxes aren't intended to be sealed Yes, that's right: the standard outdoor/weatherproof electrical enclosures in use in the US are not intended to be sealed against water ingress. ...
ThreePhaseEel's user avatar
3 votes

What sealant to use on a hole in the interior of the house on an external wall?

Attempting to seal this from the inside probably won't work. If insects are getting through, there must be a gap in the exterior sheathing or framing. Closing off that one gap under the trim won't ...
isherwood's user avatar
  • 139k
3 votes

Protecting bathroom mirror from corroding around the edges

Try using clear nail varnish on the edges and/or where the mirror is attached to the backing, usually formica covered wood or plastic.I work with stained glass and have always used it with good ...
Colin's user avatar
  • 31
3 votes
Accepted

Type of sealant for nails under asphalt shingles

I have used zinc make sure the strip extends beyond the shingles , we started using wide zinc strips at 2 levels after moving to Oregon and noticing no moss or fungus below the metal roof vents. I ...
Ed Beal's user avatar
  • 103k
3 votes

Sprayed foam sealant into window blind's headrail, immobilizing it. Blinds are also screwed directly into frame. How to remove (has picture)

If I understand correctly, you've sprayed expanding foam into the head of your blinds. It has now fully encased all the working mechanism of the blinds - the rods, gears, strings, etc. You could take ...
FreeMan's user avatar
  • 47.4k
3 votes

What can I use as caulk that a cat won't destroy?

Loctite's Power Grab is a very good alternative. It dries hard and has very good adhesion while also being available in white or clear. You may have to get their Ultimate version to be fully ...
Iggy's user avatar
  • 10.3k
3 votes
Accepted

Should seal tape ever go in a union?

A leaky union is probably caused by one of the following: misalignment of the two parts -- not sufficiently close to a straight line debris between the mating surfaces (maybe there's solder here too.....
Greg Hill's user avatar
  • 30.8k
3 votes

What is the sealant around this shower arm, and should I replace it when I replace the arm?

It is some kind of caulking, maybe brown silicone for windows. If replacing/removing the arm will need to replace the caulking. Silicone is usually recommended. Probably want the bath and tub type. ...
crip659's user avatar
  • 24.8k
3 votes

What should I use to seal between granite countertops?

Scrape the grout line in the counter top to remove dirt and achieve a depth of perhaps 8mm (just over 1/4in). Select a grout and colour matched caulking. They can be of different brands, but some ...
P2000's user avatar
  • 16k

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