A Complete Guide to Installing and Caring for Hardie Plank Siding on Your Shed

Installing Hardie Plank Siding on a Shed

Installing new siding can give an old, weathered shed a brand new look. Hardie plank siding is a popular option for sheds because it is durable and low maintenance. In this article, we'll go over everything you need to know to install Hardie plank siding on your shed.

Benefits of Hardie Plank Siding

Hardie plank siding, also known as fiber cement siding, is made from a blend of cement, sand, and cellulose fibers. Here are some of the key benefits of using Hardie plank siding on your shed:

• It holds up well to moisture - Hardie plank has a super low absorption rate, which prevents rotting and withstands rain, snow, and humid conditions.
• It resists damage from hail and high winds - The fiber cement material is impact resistant.
• It requires minimal maintenance - You don't need to paint or stain Hardie plank siding.
• It has a long lifespan - With proper installation, Hardie plank siding can last over 50 years.
• It has a wood-like appearance - Hardie plank comes in a variety of styles that mimic traditional wood siding.

Prep Work

Before installing the new Hardie plank siding, there are a few important steps to take to get the shed ready.

Remove Old Siding

You'll need to remove any existing siding on the shed. Use a pry bar and hammer to carefully take off the old siding boards or panels. Be sure to wear proper safety gear like gloves and eye protection.

Repair Underlayment

Check the condition of the underlayment, which is the material the siding will be attached to. This is typically plywood or oriented strand board (OSB). Replace any damaged sections that could impact the integrity of the siding installation.

Install House Wrap

Install house wrap over the entire shed, stapling it securely into place. House wrap acts as a weather barrier while still allowing the walls to breathe. Choose a high quality wrap specifically made for use under siding.

Cutting Hardie Plank Siding

Most Hardie plank siding boards come pre-cut to standard sizes, usually 12 feet long. You will likely need to cut some boards to properly fit them around doors, windows, and corners on your shed. Here are some tips for cutting fiber cement siding:

• Measure carefully before cutting to avoid errors.
• Use a circular saw with a dust collection system and a fiber cement blade.
• Cut outdoors whenever possible to contain dust.
• Draw cut lines on the backside of the board to avoid marks on the visible finish surface.
• Make small notch cuts rather than cutting all the way through to avoid breakage.

Installing the Siding

Now you're ready to start installing the Hardie plank siding. Follow these steps:

Install Starter Strip

The first row of siding will be installed into a starter strip. This is a straight, level piece of trim that gives you a fixed point to start from. Nail the starter strip along the bottom of the lowest wall.

Hang First Row

Place the first siding board into the starter strip and secure it with corrosion-resistant siding nails. Leave a 1/4" gap between boards for expansion. Use a level often to ensure the boards are hung straight.

Offset Seams

When starting the next row, offset the seams from the row below by at least 16 inches. This strengthens the installation and minimizes obvious seams.

Work Around Openings

Measure and cut boards as needed to fit around windows, doors, vents and other openings. Leave proper gaps between the siding and trim for these areas.

Double Cut Joints

When two boards meet end-to-end over a stud, use the double cut method. This involves cutting both boards so the joint overlaps directly over the stud.

Maintain Proper Spacing

Keep 1/4" spacing between boards as you install each row. Use a spacer gauge to maintain even gaps. Don't force boards too tight.

Fasten Properly

Always use siding nails to install Hardie plank shingles. The nails should penetrate the studs at least 1". Space the nails 8" to 10" apart.

Finishing Touches

Once all the siding is installed, there are a few finishing steps to complete the project:

• Go back and caulk any gaps larger than 1/4" between boards and around openings.
• Paint or prime the cut edges of any exposed boards.
• Install trim pieces like corner boards, fascia, and flashing.
• Seal joints between trim and siding with exterior-grade caulk.

Maintaining Hardie Plank Siding

Fiber cement siding is very low maintenance compared to wood siding options. Here are a few tips for keeping your Hardie plank siding looking its best:

• Wash occasionally with a garden hose to remove dirt and debris. Avoid using pressure washers.
• Inspect for damage after major storms.
• Repaint every 10-15 years for appearance.
• Recaulk gaps if needed to prevent water intrusion.
• Control vegetation to prevent vines from growing directly on the siding.

With proper installation and minimal maintenance, Hardie plank siding will provide many years of attractive, durable performance on your shed. The fiber cement material resists rot, swelling, and moisture damage much better than wood or vinyl siding. If your shed is in need of an exterior facelift, Hardie plank is a great option to consider.

FAQs

Does Hardie plank siding come pre-primed?

Most Hardie plank products come pre-primed and ready for paint or stain. Be sure to check the specific product you choose, as some may require extra priming before finishing.

What tools do I need to install Hardie plank siding?

You'll need basic tools like a circular saw, hammer, level, tape measure, utility knife, pry bar, and caulk gun. Make sure you use carbide-tipped blades designed for cutting fiber cement.

What is the best way to cut Hardie plank siding?

Cut Hardie plank outdoors with a circular saw and fiber cement blade. Go slowly to minimize dust. Make small notch cuts rather than cutting all the way through to prevent breakage.

How far apart should I space the Hardie plank siding boards?

Maintain a 1/4" gap between siding boards to allow for expansion and contraction. Use a spacer tool as you install rows to keep gaps even.

Can I install Hardie plank siding over old siding?

Hardie plank should be installed over solid underlayment like plywood or OSB. For best results, remove old siding completely before installing new Hardie plank siding.