In this guide today, we are here with our in-depth review of the best exterior caulk for hardie siding. There are plenty of choices with multiple websites and therefore difficult to choose the best one. We recommend to read the guide and choose the one that suits your need as we review products based on the various options, features, price, quality and many more . To avoid this dilemma, we recommend to read this guide and review. It gives you insider information on how to choose the best exterior caulk for hardie siding for your needs and budget.
This is the ultimate buyers guide exterior caulk for hardie siding.
Our Top Picks
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SILIGUN Caulking Gun - Anti Drip Extreme-Duty Caulking Gun - Patented New and Innovative Design -...
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The Best exterior caulk for hardie siding
OSI Quad Max Colored Caulk 9.5 oz. (James Hardie Mountain Sage)
$26.99
in stock
Amazon.com
as of March 16, 2025 11:17 pm
Features
- 9.5 oz.
- Colored caulk sealant
- Used in tandem with James Hardie siding products
- Can be installed in wet & cold conditions
OSI Quad Max Caulk 9.5 oz. (James Hardie Arctic White #004)
$17.99 in stock
5 new from $12.67
Amazon.com
as of March 16, 2025 11:17 pm
Features
- Proven wet surface application
- Better flexibility, 5X stretch and +/- 50% joint movement
- Consistent bead in hot or cold temperatures of 0 to 140 deg F application
- 24 hrs fast cure for quicker protection
- Paintable in 1 hr
Gorilla Waterproof Caulk & Seal 100% Silicone Sealant, 10oz Cartridge, White (Pack of 1)
$9.45
in stock
22 new from $9.45
Free shipping
Amazon.com
as of March 16, 2025 11:17 pm
Features
- Speed meets strength: Caulk & Seal's silicone caulk is ready for water exposure in as little as 30 minutes
- All-purpose: Gorilla caulk works wherever the work is; Indoor and out, rain or shine after fully cured
- Waterproof sealant: This white caulk seals out air, water, and moisture with 100% silicone as cured
- Gorilla tough: This white silicone caulk is not only mold & mildew resistant, it won't yellow, shrink or crack over time
PacTool SA903 Gecko Gauge - Siding Mounting Kit for Fiber Cement Installation - Compatible with 5/16-Inch Siding
$66.95
in stock
18 new from $40.50
1 used from $49.18
1 used from $49.18
Amazon.com
as of March 16, 2025 11:17 pm
Features
- PRO GRIP CLAMP: Ideal for one-person installation, this siding mounting block gauges and supports the next course for nailing, with virtually no layout time. Making any job ideal for one-person installation, with more accuracy, and 50% percent faster.
- SIDING TOOLS: Our gauges can be adjusted at 1/4-inch increments for 4 to 8-inch siding reveals, and the patented Friction-Cam mechanism can support full 12-foot cement-board siding lengths. This feature ensures equal spacing between each board.
- PROFESSIONAL EQUIPMENT: This product is safe to use on primed or pre-finished siding products. Made from durable plastic, the locking grip is made from a rubber material, ensuring that the front face of your siding will not be scratched or damaged.
- LIFTING TOOLS: Works with 5/16-inch James Hardie’s including the updated HZ5 series with a new “eased” drip-edge profile. Designed to hold the board at the correct height, these hands-free clips help install fiber cement siding with less fatigue and more productivity.
- PACTOOL: Trusted for decades, we are the leaders in specialized construction, renovation, and remodeling designs. Our cutting-edge product line inspires craftspeople and DIYers to work smarter, measure better, and repair more efficiently.
Diablo by Freud DJT141HM 4 in. 6 TPI Carbide T-Shank Jig Saw Blade for Fiber Cement & Plaster
$12.29 in stock
20 new from $10.75
Free shipping
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as of March 16, 2025 11:17 pm
Features
- TiCo Hi-Density Carbide - For greater durability and up to 50X longer life versus standard jig saw blades. Ensures longer blade life and consistent performance.
- Optimized Blade Design - Reduces heat and pitch buildup. ensuring smooth, efficient cutting and extending blade life. This allows cleaner cuts and preventing the blade from overheating.
- Perma-SHIELD Non-Stick Coating - Reduces drag and shields the blade against heat, gumming and corrosion. This enhances the blade's performance and extends its lifespan.
- T-shank Design - This fits all combo and most U-shank jig saws. This provides flexibility and convenience for users, allowing for easy installation and removal of the blade.
- Maximum Performance - Designed to deliver exceptional performance in both cordless and corded jig saws, these blades excel in cutting in abrasive materials such as fiber cement and plaster.
Dap 18286 Gray Dynaflex 230 Sealant 10.1-Ounce
$8.99 in stock
19 new from $8.04
Amazon.com
as of March 16, 2025 11:17 pm
Features
- DAP Dynaflex 230 sealant is Silicone tough with superior flexibility and crackproof performance
- Dynaflex 230 is a premium elastomeric latex paintable sealant that can be painted in 2 hours
- Dynaflex 230 100% waterproof sealant provides a weatherproof seal
- Aluminum Gray sealant seals joints up to 2" wide and performs like silicone providing a highly flexible sealant that handles joint movement without cracking
- Premium elastomeric latex sealant adheres to a wide range of building materials indoors or outdoors, such as wood, MDF, PVC, polystyrene, and composite trimboard
OSI Quad Window, Door and Siding Sealant Red 223, 10 fl oz, Cartridge
$10.69
in stock
10 new from $8.86
Free shipping
Amazon.com
as of March 16, 2025 11:17 pm
Features
- All-Season Formula: Superior performance and strong adhesion without the need for primer to most materials for an effective air and moisture barrier
- Permanently Flexible: Features Class 25 for long-term elasticity and durability in any condition
- Match With Any Color: Free online OSI color match tool offers a match for 9,200+ manufacturer colors
- Weather Resistant: Tough, rubbery seal resists water, UV, dust, and dirt and will not crack or yellow
- Easy Application: With a 4-inch professional spout this self-tooling formula applies smoothly with easy cut-off even on wet or cold surfaces and is paintable after cure
SILIGUN Caulking Gun - Anti Drip Extreme-Duty Caulking Gun - Patented New and Innovative Design - Lightweight ABS Frame - for the Smallest to the Largest Jobs
$22.62
in stock
2 used from $20.12
Free shipping
Amazon.com
as of March 16, 2025 11:17 pm
Features
- THE MOST COMPACT CAULK GUN - At just 4" it's no bigger than the tube of caulk it's dispensing. Cut off the excess tubing to reach even tighter spaces. No more oversized, heavy caulk guns that limit your reach.
- EASY TO STORE - Because it's so compact, the Siligun can be kept in any toolbox or drawer. It's lightweight too, just 10.4 oz.
- NO DRIP DESIGN - When you release the trigger, the flow stops. No more run-on mess that traditional caulk guns leave.
- EFFICIENT DISPENSING - Powerful 12:1 thrust ratio can deliver a thick bead, yet trigger is sensitive enough for precise application.
- WORKS WITH ALL 10 OZ TUBES (310 ml) - Suitable for latex, acrylic, silicone caulks and more.
Siding Mounting Kit, White Outdoor Light Mounting Block with Built-in Box, Siding Mounting Plate for 1/2 inch Lap Double and 4 inch Siding
$19.95
in stock
Amazon.com
as of March 16, 2025 11:17 pm
Features
- 【Surface upgrade】The Vapikirv outdoor light siding mount is made of thick, quality plastic and has a solid feel to it. Vinyl light block is white and surface upgrade can be painted to match the color of the vinyl siding or light.
- 【Easy to use】Fast and easy to install this siding mounting kit. Run wires through center punch hole. Safer to have your wires in a box. There is a weep hole on the bottom that needs to be left open to allow any water that does deep in behind the block to escape.
- 【Size Details】Size 6.9 Inch W X 10.2 Inch H. For 1/2" lap siding double 4". Please check the size data in the picture. If you find that your vinyl siding is not suitable, it doesn't matter. You can placed some caulking and then painted the blocks and molding. You will need to caulk around the top of the box to prevent water from infiltrating the electrical box.
- 【Applicable Types】Siding mounting block allows mounting light fixtures on all siding types including T-111, HardiePlank lap siding, and flat surfaces. The built-in electrical box design makes it very easy to install.
- 【Package Contains】You will receive a white vinyl siding mounting blocks, NM cable connector and 5 screws. 【Note】: If the size of the Mounting Block does not match your siding surface, caulk around the top of the siding mounting kit.We're proud of our customer service, and your satisfaction is very important to us!
Guppyhill Vinyl Siding Repair Kit, Cover Any Cracks, Holes, or Blemishes on Vinyl Siding (6 Patches)
$6.99
in stock
Amazon.com
as of March 16, 2025 11:17 pm
Features
- Size : 6.3 Inches x 4.75 inches
- Material : Made from a thin piece of PVC
- Easy to Install : Clean, peel, stick, flatten and paint
- Weatherable: Works fine from 5 degrees Fahrenheit to140 degrees Fahrenheit.
- Package Include : 6 Patches Repair Kit & 1 User's Manual
The Video Review of Best exterior caulk for hardie siding
The Verdict
Our best overall exterior caulk for hardie siding, the Perception and the reviews helps assist to choose you the product better. We hope our reviews buyer guide of these exterior caulk for hardie siding will help you pick the perfect exterior caulk for hardie siding for you and your buying decision making.