Questions tagged [caulking]

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

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Okay to seal the gap between concrete foundation and sill plates from the outside using caulk or spray foam?

My house doesn't have any gasket between the sill plates and the concrete foundation, so there's some gap between the two (see red circle on the photo, which was taken from the ground facing up). I ...
James's user avatar
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Replacing tub caulk

I have a question about replacing caulk. People always state that when you replace caulk, that you should remove all of it. My tub has caulking in red found in the image above. Do I really have to ...
Edward's user avatar
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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 ...
Bernie2436's user avatar
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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 ...
kdopen's user avatar
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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 ...
kevin044's user avatar
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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. ...
marathon's user avatar
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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?
Gerard A. Cristofaro's user avatar
6 votes
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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 ...
Employee's user avatar
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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 ...
MonkeyBonkey's user avatar
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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 ...
MiniMe's user avatar
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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 ...
lycus's user avatar
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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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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. ...
amrog's user avatar
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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? ...
user2150989's user avatar
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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 ...
Sam7919's user avatar
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2 votes
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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 ...
jbyrd's user avatar
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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 ...
Craig's user avatar
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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 ...
tnknepp's user avatar
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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 ...
Scott's user avatar
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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 ...
y.w.026's user avatar
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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 ...
MontCarlo's user avatar
2 votes
1 answer
422 views

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 ...
Billiam's user avatar
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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 ...
LShaver's user avatar
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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, ...
James's user avatar
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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, ...
Rhonda H's user avatar
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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 ...
Jalen Jackson's user avatar
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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, ...
user3782816's user avatar
2 votes
0 answers
124 views

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 ...
Rick T's user avatar
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2 answers
474 views

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'...
devinbost's user avatar
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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. (...
UndergroundSkeptic's user avatar
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740 views

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 ...
Fresh Codemonger's user avatar
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1 answer
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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. ...
amrog's user avatar
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1 answer
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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 ...
amrog's user avatar
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2 votes
3 answers
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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 ...
Fredric Shope's user avatar
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1 answer
928 views

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 ...
Tumbleweed53's user avatar
1 vote
3 answers
1k views

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. ...
P. B.'s user avatar
  • 268
2 votes
1 answer
4k views

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 ...
P. B.'s user avatar
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0 votes
1 answer
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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 ...
Blade2003's user avatar
4 votes
1 answer
10k views

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 ...
Nick T's user avatar
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1 vote
1 answer
3k views

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 ...
user77711's user avatar
0 votes
1 answer
174 views

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?
user109773's user avatar
0 votes
0 answers
144 views

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 ...
user109773's user avatar
0 votes
0 answers
553 views

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 ...
A Kaplan's user avatar
0 votes
1 answer
283 views

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....
Kjara's user avatar
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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 ...
DA01's user avatar
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What caulk color is this?

can anybody tell me what’s the color if the caulk used here? i replace the other side of my kitchen with silicone white and the colour is totally different with what is attached as picture.
Ferdz M's user avatar
0 votes
1 answer
342 views

Caulking bathroom floor

I have this part of caulk missing near the corner of my bathroom floor. Should I just patch this section with new caulk or would I need to scrape the old caulk and reapply caulk along the entire edge? ...
jeffrey's user avatar
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Should the edge of a tiled shower wall and floor be left unsealed?

Our shower remodel was just completed and our tiler intentionally left the edge of the shower wall and floor unsealed. This seems strange to me but he insisted that it should be left unsealed. He said ...
Calvin Schemanski's user avatar