Submitted by Electronic_Honeydew1 t3_121krtn in DIY

Renovated house 2 yrs ago. Did a lot of caulking / siliconing. Used well reviewed brands, followed instructions. Now pretty much all caulk has gone yellow / orange and cracked but the silicon looks great still. Need to do some more caulking thinking about just using silicon as it will get the sun. Interested to hear what others do and if caulk holds any advantage at all? Thanks

32

Comments

You must log in or register to comment.

craigcoffman t1_jdm5uf2 wrote

Most caulks will do that if not painted. The siliconized stuff less so.

11

Intelligent_Ebb4887 t1_jdm9h47 wrote

Most silicone isn't paintable, so you wouldn't want to use it in areas that would get painted at any point. If you're looking at exterior products, polyurethane caulk is a good option as well.

14

fredsam25 t1_jdmalpa wrote

Silicone where you don't care about matching the color perfectly, want a great seal. Caulk and paint everywhere else.

3

imoutohere t1_jdmd42e wrote

There is a product called Quad. You can get it at big box stores. It isn’t very paintable. But you can groom it better than silicone. I would also recommend phenosil. My experience has been the clear caulking and silicone tend to yellow over time. But cracking after 2 yrs? That’s weird.

8

clemclem3 t1_jdmk25c wrote

Silicone is often a problem because it sticks to silicone better than anything else. Over time movement will cause silicone to peel off of one side of any joint and stubbornly stick to the other side and be a p i t a to remove. Quad is much better. Quad is a version of polyurethane sealant or PL. These sealants are difficult to apply and messy and they never really cure so they sort of stay gummy but they have really good performance as sealers

Siliconized latex or. Siliconized acrylic is a very different thing. Paintable. Water clean up. Stays flexible better than regular latex

Good old regular latex caulk my brand is white lightning is still a very good option for anything that's going to be painted over. It holds paint well and it's very inexpensive and easy to apply

There's also butyl rubber mostly used on metal like gutters and copolymer sealant like lexel. Very messy very difficult to apply but can provide really good performance for the right application

2

randomn49er t1_jdmsgk2 wrote

All depends where you are using it. Silicone in kitchen and bathroom. For exterior applications a polyurethane caulk will allow expansion and contraction and resit UV breakdown.

1

Pikablu555 t1_jdn0q45 wrote

Silicone is significantly more stretchy and holds up better to expansion and contraction. But as many have said it is not paintable most of the time, you can find paintable silicon though.

1

Craig-Carmoney t1_jdn1nir wrote

Silicone is best if the goal is to protect from water damage.

1

leroyyrogers t1_jdn1ttz wrote

I've moved to using dynaflex ultra for all my caulking needs. It's durable, stretches, paintable, and mold proof. It's rated for interior and exterior so I have no need for anything else.

2

DipDoodle t1_jdn27b3 wrote

Maybe white lightning or red devil? Both probably worse than Alex plus. All of these caulks suck though, if you want actually good painters caulk you have to go to a professional paint store and get some PPG top gun or all pro brand

2

bcbigfoot t1_jdn4i45 wrote

as a renovation carpenter, I have had really good results with Dynaflex 230.

2