Best Caulk for Hardie Siding

Best Caulk for Hardie Siding

You have been one of those solitary souls standing in the caulk’s aisle in one of those endless home centers. There are plenty of options, and you do not know where to start.

Caulk is the perfect tool for sealing gaps and cracks at your DIY projects. It is mostly used on doors and windows, but it could be used for other goals too. Also, its formula prevents water, air, or insects entering your house through those cracks you are trying to fix.

Best Caulk for Siding

The purpose of this review is to make you appreciate the differences between those ever-expanding choices so you will be able to finish your project very soon or give your bathroom a new fresh look.

Flex Shot Rubber Adhesive Sealant Caulk – Extension Tube

Flex Shot Rubber Adhesive Sealant Caulk

You will be able to fill every size of cracks and holes because of its thickness and its great results with almost any material. It expands and contracts to fill every gap leaving no mess behind, and it has great resistance to water as well as extreme temperatures. Also, you will be able to choose between a large list of colors.

However, this product stands out for its superior finish. This product delivers great accuracy because it is not necessary to use a caulking gun when applying it, as it comes with a free extension tube for those hard-to-reach surfaces.


  • It has a very useful extension tube for difficult gaps and quality finishes that do not require a caulk gun
  • It is available in a lot of colors, ideal for your desired design


  • It is not as resistant as the GE products

GE GE012A All Purpose Silicone 1 Sealant Caulk – Very Resistant to Water

GE GE012A All Purpose Silicone 1 Sealant Caulk

This sealant is ideal for surfaces exposed to hard weather conditions such as high ultraviolet rays or freezing temperatures. It is entirely waterproof, and it adheres to dry and wet surfaces well. That means that you do not have to worry about if it will rain later in the day as it will not make any impact on the final result.

Finally, this fully cured sealant can resist up to 7 years with any damage on the surface, such as that annoying mold.


  • It is ideal for every purpose


  • Its dry time is longer

GE Sealants Max Shield All Weather Siliconized Acrylic Latex Sealant Caulk – Resistant and Quick

GE Sealants Max Shield All Weather Siliconized Acrylic Latex Sealant Caulk

This premium caulk sealant is perfect for projects exposed to harsh environments. It is known explicitly by its durability properties: it is a lifetime sealant that resists every stain-caused mold. It is waterproof and shrink-proof. It gives superior finishes on indoor surfaces too.

Another great feature to highlight from this product’s formula is its short period of dry, because of its great adhesion, making it excellent for small projects like a small hole in your bathtub.


  • It is the best resistant sealant
  • Its dry time is short


    GE GE5000 Advanced Silicone 2 Window & Door Sealant Caulk – Superior Features

    GE GE5000 Advanced Silicone 2 Window & Door Sealant Caulk

    This is the quickest GE caulk sealant in the market, your project could be ready to resist water or other aggressive substances in less than half an hour. It adheres pretty well to a wide range of surfaces and it fits perfectly with windows sidewalks and doors siding.

    As each GE product reviewed before, it provides great durability over the years with regular cleaning, and it will not blemish metals, which makes a difference with a regular silicone.


    • It is the quickest in the market
    • It delivers premium finishes


    • Caulk is harder than others

    GE GE500 Advanced Silicone 2 Window & Door Sealant Caulk – More Professional Tube

    GE GE500 Advanced Silicone 2 Window & Door Sealant Caulk Squeeze Tube

    It is the same silicone as the one described above, with a slight difference: this product comes with a squeeze tube, which an awesome feature that aids with the application of the product and the cleaning after that application. 

    As we have said, this silicone has the same properties as the previous caulk sealant reviewed, it simply depends on whether you prefer a regular tube or a more professional one.


    • The squeeze tube allows to go deeper in gaps



      Here there is no right choice or wrong choice. You simply have to choose the caulk sealant that best suits what you are looking for. Although most of them fit general objectives, if you need a specific result it is better to put on your glasses and start reading and comparing the characteristics that differentiate some products from others.

      For example, maybe you don’t have a silicone gun or you want your finish to have a special color, so you should choose the first one. Or you may just need a quick finish to fix a small break in your window and it’s raining out there, so GE’s waterproof silicone will be the one for you.

      Whatever your need, we recommend that apart from reading this review, you dedicate your effort to reading the specific characteristics that come on the labels of each product, so that you do not miss any detail and your result is durable and has the best of all aspects.

      And above all, always be careful when using these products and adopt all the necessary safety measures, since the materials from which they are made are excessively corrosive to our skin. Once you have done everything this check-list, you are ready to begin to redecorate and protect the smallest things in your house!