
How to Repair Fiber Cement Siding
- Clean the Siding. Before you do anything else, you want to get the siding nice and clean. ...
- Replace the Caulking. Over time, caulking around windows, door frames and trim can crumble away and fall out. ...
- Repair any Holes. ...
- Apply Fresh Paint. ...
How to replace damaged hardboard siding with fiber cement?
- Widespread rotted trim and window and door damage due to improper original installation
- Omission of required window & door flashings
- Omission of caulk where it should have been installed
- Omission of back-flashing at siding butt joints. ...
How much does it cost to install fiber cement siding?
Your actual price will depend on job size, conditions, finish options you choose. It costs $750 to $1,350 to install one square of fiber cement siding, which is equal to 100 square feet. You can expect to pay anywhere between $15,000 to $27,000 to complete a fiber cement siding project on a typical house.
How to increase your home value with fiber cement siding?
Which Exterior Renovation Adds the Most Value to a House?
- These 8 Exterior Renovation Projects Add the Most Value. When it comes to selling a home, the first impression is everything. ...
- A New Roof. ...
- Garage Door. ...
- Fiber-Cement Siding. ...
- Steel Front Door. ...
- Fiberglass Front Door. ...
- Vinyl Windows. ...
- Vinyl Siding. ...
- Wood Windows
Is fiber cement siding worth the cost?
This is based on how much the project costs versus the resale value. New siding for your home is worth the investment because it has proven to yield a solid return for many years. You’ll see the money spent on fiber cement siding come back when it’s time to sell your home.

How do you replace one piece of fiber cement siding?
3:114:42Replacing some pieces of hardboard siding with decent results - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou know measure it measure the replacement. Board cutting it with a circular saw just a regularMoreYou know measure it measure the replacement. Board cutting it with a circular saw just a regular blade in here kind of a general purpose blade stuff cuts very very easily.
How do you fix fiber siding?
Use a plastic putty knife to apply the patching material to the damaged area, filling in the area and shaping the patch to match the original contours of the siding. Allow the patch to thoroughly dry and apply another thin layer of patching material if the first layer shrank during the drying process.
How do you fix loose fiber cement siding?
Loose boards are repaired by face-nailing them in place.Inspect the HardiePlank siding on the exterior of your home for loose boards, which will leave your house open to weather and insect damage. ... Slide a paint scraper against the surface of the loose boards in a back and forth motion while applying slight pressure.More items...
How do you repair fiber cement shingles?
0:003:51HOW TO Repair Asbestos Siding [how to repair and replace broken ...YouTubeStart of suggested clipEnd of suggested clipTuned all right so step one in replacing these shingles is to first remove the damaged shingles. SoMoreTuned all right so step one in replacing these shingles is to first remove the damaged shingles. So each one's attached with three nails. Each one on the right one in the middle one on the left.
Can you repair cement siding?
Repair or Patching Fiber Cement Board Siding For small areas of damage you can use a sealant/caulk (preferably one designed for cement repairs) but then you will have to paint those areas of repair to match the original color.
Can you repair Hardie plank siding?
Though it is a tough wearing product, the surface of the siding can sometimes be damaged during installation, by unusual wear or by impact. The James Hardie company, makers of HardiePlank, recommends the use of a cement patch product made of an acrylic mortar compound for patching their siding products.
How do you repair Hardie lap siding?
8:2814:21How to repair and replace damaged siding: Hardie board, Masonite or ...YouTubeStart of suggested clipEnd of suggested clipGet a nice big caulk. Right there. And then my piece is ready to go again i just do the same processMoreGet a nice big caulk. Right there. And then my piece is ready to go again i just do the same process again this is for keeps this time. So run it up underneath the first board drop it down.
How do you caulk fiber cement siding?
0:542:14How to like a Pro: Caulking Cement Siding - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe caulking tube which we use our tool that's on the caulking gun we push it in pull it out this isMoreThe caulking tube which we use our tool that's on the caulking gun we push it in pull it out this is ready to go we insert it in the gun. Push it up where it needs to go. And we're ready to begin.
Can Hardie board siding be glued?
Hardie Planks resist staining, mold and other damage, making them resilient for use in the home. Hardie Plank can be used as a flooring option over a plywood subfloor, with thinset as the glue to hold it securely in place.
Why is my cement siding cracking?
Improper handling - The boards—especially long ones—should be supported at both ends when moved. Fiber cement planks are floppy until secured on the wall and holding only in the middle or transporting over a shoulder will cause a dramatic sag at both ends. The stress can cause a crack at the center of a board.
How do you fix a hole in Hardie board?
Step 1: For holes larger than 1/2-inch in diameter, use a carton knife or carbide-tipped tool to cut a V-shaped groove behind the edges of hole. This will allow the patching compound to lock in behind the cement board. Step 2: Use a clean, damp sponge to wipe down the area to be patched.
How do you fix a crack in cement board?
2:155:19cement sheet/blueboard repair off cracks - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt. Now remember I'll make cracks the order to start this video all over this job as you can see we'MoreIt. Now remember I'll make cracks the order to start this video all over this job as you can see we're now not not only non-existent you can't even see them so the way I repair if I put that tape on
How do you caulk fiber cement siding?
0:542:14How to like a Pro: Caulking Cement Siding - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe caulking tube which we use our tool that's on the caulking gun we push it in pull it out this isMoreThe caulking tube which we use our tool that's on the caulking gun we push it in pull it out this is ready to go we insert it in the gun. Push it up where it needs to go. And we're ready to begin.
How do you repair Hardie lap siding?
8:2814:21How to repair and replace damaged siding: Hardie board, Masonite or ...YouTubeStart of suggested clipEnd of suggested clipGet a nice big caulk. Right there. And then my piece is ready to go again i just do the same processMoreGet a nice big caulk. Right there. And then my piece is ready to go again i just do the same process again this is for keeps this time. So run it up underneath the first board drop it down.
How do you install fiber cement siding panels?
1:493:20Fibercement Panel Siding Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipJohn makes the cut pre drills the holes. And hands it up to Calvin and PJ they slide the top underMoreJohn makes the cut pre drills the holes. And hands it up to Calvin and PJ they slide the top under the fascia the edge into the track and snug the bottom up tight. Then they screw off some more.
How do you fix loose siding on a house?
0:204:24How To Fix Loose Vinyl Siding (Phillips Vision: Episode - 53)YouTubeStart of suggested clipEnd of suggested clipSee here the hook. Right here and here you to pull it just like that just pull it just enough thereMoreSee here the hook. Right here and here you to pull it just like that just pull it just enough there to cover over that clip. And then when you push it in it'll lock right on.
Why use fiber cement siding?
One of the many reasons homeowners choose fiber cement for their siding needs is that fiber cement is so sturdy. Fiber cement siding can stand up to almost anything that Mother Nature can throw at it. Unfortunately, bad luck does sometimes strike – an earthquake hits, or the house has a run-in with a car – and the integrity ...
How to patch a cement wall?
First, clean the area thoroughly with a damp cloth, and remove any hanging particles; the area to be patched must be clean and solid around the edges. Using a stiff brush, mix the patch material specifically intended for fiber cement following the manufacturer’s directions carefully; use only as much water as the manufacturer recommends. ...
How long does a patch last on a wall?
If done properly, the patch should last for years, but there are no guarantees to the structural integrity of the siding.
Can you repair siding with a warranty?
If the siding was originally installed by United Home Experts , then it should still be under warranty and will be repaired promptly and efficiently at no charge. However, if the siding was originally homeowner-installed, or was installed by another company without a long-term guarantee, then repairs may fall to the homeowner.
Proper Installation
The first preventative measure is proper installation. Due to the nature of fiber cement – it’s heavy and hard to cut – you want to take care to follow proper steps. This type of siding is susceptible to moisture damage, so it’s super important to properly fasten, gap, and seal.
Caulking
Caulking is also another important factor. Obviously, it’s crucial to adequately caulk during installation. But as time goes by, you’ll also want to keep an eye on the condition of the caulking. Part of the repainting process should also include re-caulking, but you don’t want to wait until your next recoating to inspect your sealant.
Use the Right Paint
Another tip is to use proper paint. When recoating, go with one that is UV resistant. This will protect your siding from unnecessary fading. Also, choose an acrylic latex paint that’s formulated for exterior use. For the smoothest application, use a paint sprayer. This helps big time, especially when there’s a lot of texture.
Routine Cleaning
Finally, routine cleaning is a fantastic way to keep your siding shiny and safe. From chalking to mold to grime, an annual clean will do wonders. You can either use a garden hose (in conjunction with a scrub brush) or a power washer to get the job done. With particularly stubborn spots, hit them with a brush.
Steps To Repair Cracked Fiber Cement Siding
First, inspect the damage. If it’s isolated to one panel or plank, or in a small area, it should be within your ability to repair. If not, you’ll want to consult a professional. Make sure to clean off any grime or debris prior to jumping into work. Use one gallon of water and half a cup of trisodium phosphate (TSP). Make sure to wear gloves.
Repairing Loose Panels
When dealing with loose panels, the most common issue is that a nail or multiple nails are not sunk into a stud. The easiest fix is to nail the piece back into place, making sure it goes into a stud. When there’s no stud available behind the siding, a technique called ‘pinning back’ can be applied.
What is fiber cement siding?
Work gloves. Ladder. Fiber cement siding looks like wood, but it’s actually a tough, industrial-material alternative that’s waterproof, fire-proof insect-resistant, making it a very popular choice for most homeowners.
Can you stain siding with acrylic paint?
Use only completely acrylic paint, and apply with rollers. Depending on the size of your house, you may need a ladder to reach the area of siding near the roof. Remember, above all else, that you must not stain siding; the material is not able to hold the stain, and the end result will not be pretty! Only use paint.
Why is my fiber cement siding buckling?
Buckled fiber cement siding is most likely to occur because the installer failed to give the recommended gap between the ends of the fiber cement boards and abutting vertical trim at corners, windows, doors, etc. Buckling fiber cement siding may also occur if the product was not properly nailed.
Why does my siding have algae?
Algae, fungus, moss or lichens on siding are usually due to a combination of moisture and shade on the building wall. Plants too close to the building wall, repeated wetting by sprinkler systems, or unnecessarily dense close shade tree growth are conditions that can usually be remedied.
Can fiber cement siding be sealed?
Cut ends of fiber cement siding should have been sealed using 100% acrylic latex primer or paint (Certainteed) or in some cases using an approved caulk wiped on the cut surface (see our notes on Hardieplank installation). And caulk is required at certain joints such as vertical trim at windows, doors, corners.
Can you replace cracked siding?
You can replace the damaged sections (work with care); You could also back-flash and then simply paint the cracked siding; #N#any sealant or "patch" will "work" mechanically to seal the crack but it'll be ugly when painted.
Can James Hardie siding be filled with cementitious?
Dents, chips, cracks and other minor surface damage in James Hardie siding and trim products can be filled with cementitious patching compound. Refer to manufacturer recommendations for products that are compatible with fiber cement.
How to make cementitious patching compound?
Mix the latex-modified cementitious patching compound in a small bucket, according to the manufacturer's instructions. Blend the compound until its consistency is stiff enough to hold on the tip of a putty knife.
How long does it take for a sanding compound to cure?
Wait three hours for the compound to cure. Keep the surface of the compound moist by spraying it with a mist of water if it begins to dry. Allow the repaired area to sit for 24 hours.
Is fiber cement siding good for a home?
Fiber-cement siding is an attractive alternative for homeowners who want the look of wood siding with the rot resistance, fire resistance and durability of cement. Fiber-cement siding is low-cost for its rated lifespan and is easy to maintain when compared with other siding choices.
Can fiber cement cracks be repaired?
No matter how durable fiber-cement siding is, though, cracks can still occur. Small cracks can be repaired with a special patching compound before they cause breaks, saving you the work of removing and replacing a damaged panel. Adding a fresh coat of paint over the patched area will blend the repair into the surrounding siding.
How long is Nichiha siding warranty?
That’s why Nichiha is here to help with all fiber cement needs, including a 30-year robust fiber cement siding warranty.
Can you putty knife on cement?
If damage isn’t extensive, patching with a putty knife may be an option. It’s important to ensure the area is cleaned and any uneven edges are made solid, otherwise, the cement patch won’t adhere to the surface and may require repeat maintenance.
Can fiber cement siding withstand extreme heat?
It’s an inarguable fact that extreme weather and natural disasters can be damaging to homes. Many materials can’t withstand high winds or extreme heat and can either erode over time or sustain immediate damage -- oftentimes, this is when fiber cement siding withstands damage where other materials do not.
Does fiber cement rot?
However, if not properly maintained or installed incorrectly (leaving cut edges exposed, leaving too large clearances, etc.), fiber cement can absorb moisture, leading to rot. This is particularly important for cladding and shake siding styles.
Is fiber cement siding infallible?
Although fiber cement siding is extremely protective and resilient, it’s not infallible.
Is fiber cement a good building material?
Fiber cement is one of the most durable and reliant building materials available to homeowners. Given this, there are very few things that can cause damage. But it’s still important to know how to prevent damage before it happens.
Is Nichiha siding fire resistant?
coastal areas, including the stringent wind load codes in Miami-Dade. Nichiha’s siding is also fire-resistant.
What siding goes around a 6 year old house?
A 6 year old house has the fiber cement siding abutting the flashing. This goes all around the house. Can we take a saw and cut a 1/4" out of the bottom plank?
Can you use power grab on loose fiber cement?
Loctite's "Power Grab" construction adhesive is not likely to perform well in an effort to glue loose fiber cement siding boards, because those boards, in a normal installation, are nailed to building sheathing and framing that have first been covered with housewrap.
Does James Hardie have a warranty?
These inquiries sometimes include requests that James Hardie provide warranty coverage to remediate problems associated with paints, and other non-approved materials as touch-ups. James Hardie’s warranty provides coverage for defects in materials and workmanship on ColorPlus products and its Touchup only.
Does James Hardie use color matched caulk?
James Hardie [JH] does not approve use of JH approved color matched caulk, other caulking materials or cementitious patching compounds to touch up nail heads, nail holes, dents, chips, cracks or other minor surface blemishes on JH products with ColorPlus® Technology. Warranty Coverage.
Can you use a Scot#N# to fasten down siding?
Scot#N#To fasten down any board type siding without removing and replacing (working from bottom-up) you'll want to follow the manufacturer's face-nailing recommendations such as are used at trim where nails are not covered by the next siding course.
Can James Hardie siding be filled with cementitious?
Dents, chips, cracks and other minor surface damage in James Hardie siding and trim products can be filled with cementitious patching compound. Refer to manufacturer recommendations for products that are compatible with fiber cement.
What is fiber cement maintenance?
As a guide, it is recommended that normal fiber cement maintenance tasks and care include: Installing gutters and downspouts on your home —if they are not already present when you purchased the home. Cleaning out your gutters, blocked pipes, and overflows of any debris, leaves, twigs and dirt.
What is the best way to clean siding and trim?
Extra care should be taken when cleaning your siding and trim using a pressure washer.
How much pressure should I use to keep siding and trim from leaking?
To minimize the chance of damaging your siding and trim use a wide fan tip, keep a minimum of 6 feet from the wall, and keep the pressure below 1500 psi. Maintaining the exterior of your home helps prevent water intrusion and is an important part of sustaining the beauty and value of your home.
Can you replace James Hardie siding?
It is advised to replace the damage siding with a new section of ColorPlus® siding. If your James Hardie siding was originally painted after it was installed on your home, then check the original paint manufacturer’s recommendations for reapplication of paint.
Can James Hardie siding be filled with cementitious?
Dents, chips, cracks and other minor surface damage in James Hardie siding and trim products can be filled with cementitious patching compound. Refer to manufacturer’s recommendations for products that are compatible with fiber cement.

Step 1 – Clean The Siding
Step 2 – Replace The Caulking
- Over time, caulking around windows, door frames and trim can crumble away and fall out. Use your caulk gun to replace all caulking now.
Step 3 – Repair Any Holes
- If you have some small cracks and holes in your siding, you can fill them in with patching material specifically designed for this purpose, available at your local hardware store. Keep in mind that the patching will be obvious, whether or not you paint over it, so this is the best solution if the cracks and holes are in out of the way places that aren’t readily noticeable. If you have really big …
Step 4 – Apply Fresh Paint
- Finally, now that your siding is clean and renewed, it’s ready to paint. Make sure that the siding is completely dry from the washing, and that the caulk and patches are dry too. Use only completely acrylic paint, and apply with rollers. Depending on the size of your house, you may need a ladder to reach the area of siding near the roof. Remember, above all else, that you must not stain siding; t…