Questions tagged [caulking]

Caulking is the action of applying a sealing compound to joints and gaps in building materials.

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What to know before recaulking shower

I have a shower that has some kind of black mold around the existing caulk. I plan to remove it and recaulk. Following this video I know I need to: use painters tape to create a strip for caulk use ...
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Layering clear caulk over colored caulk to create "fake" grouting

It was time to re-caulk my bathtub, due to mold/mildew in the surface. The walls are tile down to just above the bathtub and the plumber had apparently used a clear caulk over grouting. I successfully ...
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Should this exterior door threshold be caulked here?

I had a question on this caulking done on the outer part of the exterior door threshold. I have marked with the white arrow what looks like where the extension connects (seems to create a large gap ...
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Best way to replace cracking grout/caulk around acrylic bathtub?

I have an acrylic bathtub that meets up against marble tile. I thought this was hard grout at first because it has a gritty finish, but poking at it with a knife reveals it to be somewhat flexible. ...
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Do I need to caulk at the bottom of where the siding meets the concrete?

I am putting vinyl siding down to a concrete foundation. Do I need to caulk where the siding meets the concrete?
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Why does caulk sometimes escape the back end of the tube instead of the nozzle?

The tube, which I bought in December 2021, says Batch 21E11 Expiry 05/2023 I'm taking this to mean that it was produced one month before purchase, and at this time still has 15 months before expiry. ...
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Shower stall base bows downward from body weight, causing caulk to crack

Within the first year of living in my apartment, the caulking where the shower stall base meets the wall tiles kept cracking along the entire length of the shower stall like this: The contractor came ...
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Easy way to seal some pinhole leaks around my steel hatch with flex tape

I have a steel hatch to my basement that sometimes leaks under heavy rain. I've noticed that it's just one side of the hatch and if it's a sunny day I can see what looks like a few pinholes that the ...
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Can I do silicone caulking touch ups next day after fresh caulking?

I just caulked my bathroom using silicone but I am not happy with what I did in a few spots Can I do some touch ups next day? This is mostly costmetic for fixing either rougher areas or uneven areas. ...
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What type of silicone should I use for caulking the shower corner and the transition from wall tiles to shower base?

What type of silicone should I use for caulking the shower corner and the transition from wall tiles to shower base? I know recommending a product is out of scope here but I am asking about the ...
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Is there any reason to not caulk/foam between the garage door jamb and rough opening?

There is a gap between the rough edge and the garage door jamb. From some research, it seems like it's common practice to caulk/spray-foam this area to prevent drafts/etc. However, before doing so, I ...
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How to caulk James Hardie panel (not plank) siding?

Most people have Plank Siding on their walls. I have what I think is called Panel siding. You can see some of the seams have separated, how do I caulk these? In most videos of plank siding there is ...
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Should electrical box face plates be caulked?

I am in a dilemma whether to caulk electrical box face plates or not. The reason to do it is to improve the R value of the house but a downside is that any removal will be slightly more messy and will ...
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should weep holes in a shower pan be caulked over?

I want to recaulk my shower. The shower pan has two weep holes that are currently covered in caulk (circled in green in the image below): Are these holes supposed to be caulked over or not? What are ...
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Anchoring CAT6 cable and a cameras to hardie plank

I am going to drill through hardie plank to run CAT6 to a camera. The run outside the house will be about 10' to 12'. Total run is about 30'. I wanted to ask if I am going about this the correct way. ...
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Tub Surround separated from wall

I recently removed the shower doors on our tub and after I removed them I noticed the fiberglass tub surround is separated from the wall on one side. Is it ok to run a bead of bathroom silicone ...
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What material(s) to seal exterior water pipe opening in masonry?

I have an opening for an exterior water pipe/hose bib as shown: The opening is about 2.5" wide and I don't have direct access to the back side. What material(s) should I use to seal the opening? ...
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Best way to flash pvc deck frieze board to brick/concrete

I'm resurfacing a deck and installing a waterproofing spline between the deckboards called Dexerdry. The first board sits in routed 5/4 x 4 PVC which is fastened to the exterior of the house. A few ...
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Faucet flush against backsplash, how to seal?

Have two bathroom faucets that were installed completely flush. Replacing the silicone caulking. Should I leave them installed and just caulk around and on top? Or first remove the base and caulk the ...
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How useful is a cordless adhesive gun for the DIYer?

I haven't used a (manual) caulking gun in years, but I recall it was particularly dreadful to use one. Pressing the lever at a uniform angle (or what I imagined to be one) never produced a consistent ...
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Can I use elastomeric sealant intended for roofs to caulk my shower?

I have a shower where the caulk around the door was moldy, so I scraped out the old caulk and am getting ready to apply new caulk. But all the bath/shower caulk I have is old and dried up. I do have a ...
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How to caulk wide gap around bath

I want to re-do the caulk around my bath, but the gap starts small and grows to about 4cm. It doesn't need to be a perfect finish -- just enough to stop the water until the bathroom is refurbished ...
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How to seal (caulk) replacement windows that have wrapping [closed]

When installing replacement windows where do you put caulk, and does this change if you have aluminum wrap being put on the outside? Does caulk go all the way around the window (between exterior ...
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Re-caulking vinyl windows exterior, what material do I remove, what needs to stay?

The addition to our home has very low quality vinyl windows, and board and baton siding. There are some gaps starting to appear. Looking at the photo, arrow #1 points to ~3/8" of a caulk or ...
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Leaky Windows caused drywall discoloration / damage - how to approach repair?

After a heavy rainfall I noticed that an area of the drywall was discolored and cold/soft and managed to push it in (woops). This area is usually behind a curtain so we never noticed it before. I ...
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Removing old caulk to clean mold, started pulling up unknown layer

I'm removing some old caulk from my tub to deal with some mildew (photo below). While stripping the caulk, I've started pulling up an unknown piece behind the caulk (second photo). My initial thought ...
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How can I properly caulk a vinyl window to a marble sill, inside a shower?

I have a vinyl window in my shower sitting on top of a marble or stone sill. The silicone caulking didn't stick properly last time and is now peeling off and getting moldy, since it's always getting ...
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How to seal between aluminum downspout and PVC adapter?

I recently connected a gutter downspout to an existing French drain along the side of my house. The old downspout poured out onto the patio which would ice over in winter. Because of how the French ...
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Replacing Grout Around Kitchen Sink

first time poster, hope someone can help. The grout around my kitchen sink is old and broken, and I'd like to replace it. Not sure if it would be better with grout or caulk (I've never used grout, ...
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What caused a new caulking job around a tub to develope pin holes within hours

please help... I had a contractor replace old caulk around my bathtub yesterday. Last night I noticed a small pinhole which at first looked like a speck of dirt, Today there are several more pinholes, ...
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I put caulking in between tiles that had grout already underneath it. What do I do?

My floor tiles had unsealed grout already in between the tiles. I went to Home Depot and bought a “sealant”, but it was actually caulking. I ended up putting caulk over top the unsealed grout in ...
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Lining around tub is coming off

The lining around my tub is coming off, can anyone point me in the right direction on how to fix this myself? I found a YouTube video on how to caulk a tub: which I guess is what I will go with that, ...
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Preventing silicon caulk from sticking to itself while creating tubes

Preventing silicon caulk from sticking to itself Food Grade RTV Silicone Sealant Adhesive Clear 10.3oz when creating tubes. Some videos show using hot water and some videos show using cold water and ...
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How to patch siding half covered by electrical panel

When I had solar panels installed, they removed an old electrical box, leaving a hole in the siding. For no apparent reason, they installed the new electrical panel over half of the hole they left. I'...
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Weird brown line behind bathtub caulking

Earlier today, I found cracks in the caulking around my shower, so I removed the caulking to look for any mold or water damage. When I shone my iPhone light in that area, I found a weird brown line. (...
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Exterior caulking - metal to concrete, metal to metal, metal to painted wood (pacific northwest). Any negatives of dow 795?

I am looking for a long lasting caulking for exterior work. I have primarily metal cladding but there is metal to metal, metal to concrete and metal to painted wood areas that need caulking. I ...
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Caulk on top of grout in tiled shower

We have a tiled shower that is grouted. The installer put caulk on top of grout where the wall and floor meet and the corners where the walls meet. Problem is, the caulk mildews and disintegrates. ...
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Caulk wont stick to baseboards

I have used Sherwin William and DAP caulk but it keeps peeling away from my baseboards. What is a good type of caulk that will not separate from the baseboards? The baseboards are painted with Sherwin ...
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Can I caulk the corner between stone countertop and stone backsplash?

Since I purchased this home a few months ago, we've noticed water from the sink can sit in this corner and possibly grow fungus or just leave mineral residue when it dries. We have tried to keep it ...
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How do you deal with a gap between vanity and wall?

I glued in the vanity backsplash, and I used a tad too much glue so it doesn't sit tight against the wall. Furthermore the wall is not straight and even when I lined it up before gluing, there was a ...
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1 vote
2 answers
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How to repair the caulking around basement walkout doors and what to use?

Another waterproofing question: our basement has a walkout door that is leaking from where the metal doors meet the concrete base. Three pictures from inside and one from outside are attached below. ...
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What caulk to use for basement leaks at cove joint where floor meets the wall? Polyurethane, silicone, or latex-based Drylok?

I noticed a small moist patch of the floor near a radon mitigation system. However, I suspect that it has little to do with the radon system but was due to failed caulking at the cove joint, as there ...
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Where to Caulk Around Windows on Exterior of Home? Is this a Drip Edge?

It's winter time again and our windows are really drafty so I am going to start replacing some of the old cracking caulk around the windows on the exterior of the home. In the process of examining my ...
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2 votes
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What to use to seal an exterior cable penetration in brick?

A Comcast tech came to our 3-unit building, ran a new cable into the utility room, and pulled out the seal that was there before, leaving it open as we're getting cold and wet for fall. What should I ...
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Should I caulk the gap between a wood threshold and concrete?

I want to sand down and paint the threshold to my front door, pictured below. The wood itself is fine (not rotten). There is a small gap between where the wood sits on the concrete steps. I assume I ...
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Is there any harm in caulking the bottom of this electrical conduit plate or should it be left unsealed? [duplicate]

There is a small leak into the interior that I’m wondering if it is getting in from the bottom not being sealed. Also, should the gap in the conduit where you can see the white wire be fixed?
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How is water getting onto the garage foundation sill in area near electrical penetration and weep hole?

There is a small amount of water that seeps in and shows up on top of the foundation sill on the inside of my garage in this area. It only happens during a hard wind driven rain. Do you think it is ...
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Can I apply caulk over exterior wood filler?

I am re-caulking trim that is over T-111 siding over my window that faces the brunt force of winds and rain in the Pacific Northwest. There were leaks over the window that appeared to be coming in ...
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How to apply silicone to an edge (tidily)

How can I coat an edge with silicone? There are caulking tools for all kinds of joints such as these, but there seems to be no such tools for edges. I tried using my fingers, but this is far from tidy....
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Shower curb tile: OK to caulk rather than grout?

I'm trying to finish up our shower. We ended up using a Tile Redi (which was an ordeal, but that's another story...) which means that the pan, itself, is completely waterproof, and that the tiles are ...
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