James Hardie siding is a favorite for many homeowners because of its durability and good looks. But, like anything, it can run into issues—especially if it wasn’t installed quite right or has missed some routine upkeep. Here are some of the more common problems homeowners have with James Hardie siding and what might be causing them.
Common Problems with James Hardie Fiber Cement Siding
Installation Errors
If nails are overdriven, underdriven, or improperly spaced, the siding may become unstable or even damaged. Another common issue? Not leaving enough room for expansion and contraction, which can lead to warping or buckling. James Hardie requires butt joints, meaning the siding pieces do not overlap. This means when the siding expands and contracts due to weather, you are left with gaps and uneven pieces of siding on your home. Losing the uniform and clean look you once had.
Moisture Troubles
Even though James Hardie siding is resistant to moisture, if it’s not installed just right, it can still absorb water. As a result, you might get swelling, cracks, or mold. You’ve got to make sure the flashing and sealing are done right. This is mostly common on the bottom pieces or starter strips of James Hardie siding. Make sure to deflect water away from the bottom of your home to avoid this common issue with James Hardie Siding.
Regular Maintenance Needs
While it’s highly durable, James Hardie siding still benefits from a little TLC. Occasional cleaning and repainting go a long way to keep it looking sharp and lasting longer. Since James Hardie siding requires a saw to cut the pieces, each saw cut can chip or remove paint from the siding. This is why you need touch-up paint when installing James Hardie siding. Make sure to repaint and adjust your James Hardie siding around every 5 years to keep it perfect.
Dirt Buildup
Since fiber cement siding is porous, it can collect dust and dirt. Keeping it clean helps preserve its curb appeal. Make sure to wash your home every season to keep the clean look you want.
Common Questions About James Hardie Siding Issues (and How to Handle Them)
These are some typical challenges, but you might be dealing with a specific problem and wondering how to fix it. If you’re noticing drafts, moisture issues, or color fading on your James Hardie siding, here are answers to some of the most common questions homeowners have.
Why is my James Hardie siding letting in cold air or drafts?
Possible Cause:
Gaps around windows, doors, or seams can let air in or out, which could be why your home feels drafty, and your energy bills are climbing.
What to Check:
- Around Windows and Doors: Look for any visible gaps or spaces that might let air through.
- Corners and Seams: Check that these areas are well-sealed.
Solution: A good inspection and a few adjustments can often take care of drafts. A professional checkup on the siding installation can help identify any gaps or insulation issues that may be causing discomfort, making sure your home stays cozy and energy-efficient.
Why am I seeing mold or mildew on my James Hardie siding?
Possible Cause:
Even durable siding like James Hardie’s can trap moisture if there are gaps or cracks, creating an ideal place for mold and mildew to thrive.
What to Check:
- Inspect for Cracks or Gaps: Especially around windows and doors.
- Check Water Drainage: Make sure water isn’t collecting around the siding.
Solution:
Regular cleaning helps, but if mold or mildew keeps coming back, you might need to reseal areas where moisture is getting in. Use a gentle cleaner and a soft brush to clear away mold, and consider having a pro reseal any problematic areas.
Why is my James Hardie siding warping or swelling?
Possible Cause:
When the edges of the siding aren’t properly sealed during installation, moisture can get in, which may cause the boards to warp or swell as time goes on.
What to Check:
- Edges of the Siding: Look for discoloration, softness, or other signs of moisture damage.
- Clearance from Ground and Rooflines: This space keeps moisture from soaking into the siding.
Solution:
Check to see that all cut edges have been primed and sealed. If warping is already noticeable, consult a professional to address any water damage and reseal affected areas.
Why is the paint on my James Hardie siding peeling or cracking?
Possible Cause
James Hardie siding needs the right kind of paint to stay looking good. Peeling or cracking can happen if the surface isn’t cleaned and primed well or if the paint isn’t the right type.
What to Check:
- Paint Type: Make sure it’s one that James Hardie recommends.
- Surface Prep: Check that the siding was properly cleaned and primed.
Solution
If the paint is starting to fail, you may need to strip it off and repaint it with something more compatible. Using paint that James Hardie recommends will help it hold up better.
Why are there gaps or loose boards in my James Hardie siding?
Possible Cause:
If the wrong fasteners were used or the siding wasn’t properly aligned, boards could loosen or shift over time. If you live in an area with an often changing climate, the expansion and contraction of the James Hardie pieces may have caused them to shift or loosen.
What to Check:
- Fasteners: Are the screws and nails aligned and secure?
- Joints: Are the joints of the siding aligned and secure?
- Alignment: Check if the boards look straight and in place.
Solution:
Tightening or replacing loose fasteners can make a big difference. Make sure any nails or screws used meet James Hardie’s specifications to keep your siding secure.
Why is my James Hardie siding fading or losing color?
Possible Cause:
Sun exposure can cause fading over time, even though James Hardie siding is designed to withstand it to some degree.
What to Check:
- Faded Areas: See if some spots are more faded than others.
- Sun Exposure: Areas that get a lot of direct sun might fade quickly.
Solution: Using a UV-resistant finish or protective coating can help slow down fading. If the siding already looks faded, consider adding a fresh coat of paint or protective finish to bring it back to life.
Why does my James Hardie siding feel rough or look damaged?
Possible Cause:
Using a pressure washer or harsh chemicals can damage the surface of the siding over time.
What to Check:
- Surface Texture: Run your hand along the siding to see if any areas feel rough.
- Cleaning Methods: Consider if a power washer or strong cleaning products were used recently.
Solution:
Stick with a mild detergent and a soft brush to keep your siding clean without causing damage. Avoid high-pressure washing and harsh chemicals to preserve the siding’s finish.
Why is my James Hardie siding cracking around the edges or corners?
Possible Cause:
Temperature changes cause siding materials to expand and contract. If there’s no sealant around corners or edges, this movement can lead to cracking.
What to Check:
- Corners and Edges: Look for visible cracks or gaps.
- Signs of Stress: Check if any panels seem warped or out of line.
Solution: Sealing up any cracks can help prevent more damage. Proper sealant along all edges keeps moisture out and helps maintain the siding’s structure.
Why are there stains or discoloration on my James Hardie siding?
Possible Cause: Water stains and mildew are common, especially if moisture is getting trapped behind the siding or if you live in a humid area.
What to Check:
- Type of Stain: Is it water-related, mildew, or something else?
- Moisture Intrusion: Look for any signs that water is seeping in.
Solution: Clean any stained spots with a mild detergent, and if you see mildew, use a cleaner made for that. Sealing up cracks or gaps can help keep water out.
Why does my James Hardie siding absorb moisture and start peeling?
Possible Cause: If the siding was put up while it was damp, or if moisture gets trapped behind it, peeling or even shrinking can happen over time.
What to Check:
- Installation Conditions: Was the siding installed in rainy or humid weather?
Peeling or Staining: Look for any spots where the siding seems to be holding moisture.
Solution: Make sure the siding was installed when everything was dry. If you’re already seeing peeling or staining, it might be worth getting a professional to check things out and prevent more issues down the road.
Why is my James Hardie siding rattling or coming loose?
Possible Cause:
If nails aren’t placed just right—too high or too low—the siding can start to rattle or even come loose.
What to Check:
- Nail Placement: Are the nails in line with the designated nail mark?
- Loose Nails: Tap on the siding to see if it moves or rattles.
Solution:
Make sure nails are aligned and securely fastened according to James Hardie’s guidelines. Re-securing any loose areas can prevent further shifting or rattling.
Why are my energy bills going up after installing James Hardie siding?
Possible Cause:
Sometimes, gaps or improper sealing during installation can allow air to escape, which might make your home’s heating or cooling work harder.
What to Check:
- Seals and Gaps: Look around windows, doors, and seams for any gaps.
- Insulation: Check for insulation levels behind the siding.
Solution: Better insulation, sealing gaps, and addressing any “thermal bridges” can improve your home’s energy efficiency. If energy costs are a major concern, consider a professional energy audit.
Keep Your James Hardie Siding in Top Shape
James Hardie is a top-quality fiber cement siding option, but like any home investment, it benefits from regular care. Staying on top of common issues like moisture buildup, drafts, or peeling paint helps keep your siding looking great and protecting your home for years to come.
Regular inspections and simple maintenance go a long way, and addressing any minor concerns early can help you avoid larger repairs down the road.
Need Professional Help? Contact Unified Home Remodeling
If you’re noticing any of these issues or are considering a replacement of your James Hardie siding, Unified Home Remodeling has you covered. Reach out to schedule a consultation by calling 888-631-2131 or filling out our online form–and we’ll make sure your home gets the quality siding it deserves!