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What is the best caulk for exterior wood siding?

4 min read

Asked by: Stacey Rios

Acrylic latex exterior caulk is a popular choice for many materials, including metal, wood, and tile, and comes at a decent price.

What kind of caulk do you use for wood siding?

Retailers sell a wide range of exterior caulk that works well for wood siding. However, it is recommended that you use silicone, polyurethane, or hybrid caulks because of their greater durability for wood siding applications.

What is the most durable exterior caulk?

However, if you do enough research you can find a few silicone caulks that are paint-able. This caulk is not the easiest material to apply but it is the best exterior caulk in terms of durability. Silicone caulk is known to last up to 50 years!

Should you caulk wood siding?

If overused or incorrectly placed, siding caulk can cause more damage to your exterior than good. It is generally not a good idea to use caulking on wood siding. As homeowners with this kind of siding know, wood naturally expands and contracts with fluctuations in temperature and precipitation.

What is the best wood caulk?

Best Exterior Caulk for Wood

  • Gorilla 100 Percent Silicone Sealant Caulk – Best multipurpose caulk.
  • Red Devil 100 Percent Silicone Sealant – Best for freezing temperatures.
  • GE Sealants & Adhesives Advanced Silicone 2 – Best for doors and windows.
  • Red Devil Premium Elastomeric Acrylic – Best exterior caulk for wood siding.

How do you fill gaps in wood siding?

Epoxies work well for rotted wood or wood with larger holes, but not for cracked or split wood siding. As the wood siding contracts and expands from moisture give-and-take, the hardened filler will pop out. Flexible caulk is the best product to use on cracked or split siding, but not just any caulk will work.

Which silicone is best for wood?

Silicones come in two types: neutral cure or acid cure. Acid-cure silicones work best on non-porous surfaces such as glass and glazed tile, but they can corrode metal and etch some plastics, whilst neutral-cure silicones work well on metal and wood.

Is silicone or acrylic caulk better?

Acrylic caulk works well for painting applications as it fills in any gaps between walls, ceilings, and woodwork trim. It cleans up well and provides a clean, neat seal. Silicone caulk, is often referred to as rubberized silicone caulk, remains flexible for most of its lifetime without peeling, cracking, or distorting.

Can I use silicone caulk on wood?

Silicone caulk is excellent at water sealing and flexibility so it has its place in construction. There are two main places it never should be installed, wood or any painted surface.

What is a good exterior caulk?

Silicone caulk was once the go-to material for many types of caulking jobs. It is resistant to temperature, water, chemicals and weather, making it a good choice for exterior as well as interior applications.

What caulk can you use on wood?

Painter’s caulk adheres to wood, drywall, masonry, and other surfaces. And because it dries to a paintable texture in about an hour, it’s a good choice for busy DIYers. (Available at The Home Depot.)

Is it better to use wood filler or caulk?

You should use caulk to fill gaps or joints between trim pieces and/or drywall. Use wood filler, or spackling, to fill nail holes, dents, and cracks on wood trim. Caulking and filling holes on wood trim takes time. So, don’t try to rush it.

What kind of caulk is completely waterproof?

silicone sealant

Latex caulk and silicone sealant typically dry to the touch within 30-minutes, but they can take up to 24-hours to completely cure and be fully waterproof. Fast-drying formulas can cure in under 24-hours, depending on the temperature and humidity.

Which is better silicone or polyurethane?

Generally speaking, silicone sealants are more versatile and flexible than polyurethane sealants and they work better in most environments. The inorganic composition means that silicone is resistant to UV rays, making it a better option than polyurethane sealant, which will eventually revert back to its natural form.

Is clear silicone better than white?

Clear caulk is good for sealing fixtures on tile or stone (such as in showers or around a kitchen sink). Use clear caulk where you do not plan to paint over caulk. White caulk is best used for sealing baseboards, trim, and siding. Use white caulk where you will be painting over the caulk.