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Cracks in the drywall and plaster are a very common occurrence. They occur over time when there is stress or even a little settlement of the home. Contractors may call them hairline cracks, meaning that they are very thin looking. The majority of the time they are considered cosmetic and can be covered over when repainting is done.
Where do you often see drywall cracks?
These cracks are most commonly seen in areas where the structure develops more stress than other areas. The most common areas are the corners of doors and windows as well as the corners of wall openings. This is true of both exterior and interior doors and openings.
Another common place to see these cracks is where two pieces of drywall come together. These cracks usually run either horizontal or vertical at the drywall seams. Homes with vaulted ceilings may develop these cracks in the higher areas as well.
Additionally, drywall cracks are often found where two pieces of drywall are butted together. This occurs because there is a joint, which gets drywall taped and then layered with two or three coats of drywall mud. These joint areas are weaker than in the center, or field area of the drywall, therefore some cracks may occur at these joints.
Common causes of drywall cracks
As previously mentioned, stress is usually the main reasons that cracks occur. However, there are many potential causes of stress; some of the more common ones are:
- Wood framing drying out; the wood cures or loses moisture as it ages, causing the lumber to twist or warp a little and even a little dimensional change occurs.
- Movement of the structure:
1. Wind loads from storms, creating stresses on walls and ceilings
2. Settling of the home or soil movement
3. Expansive soils pushing up on the structure
4. Wet and dry seasons
5. Expansion and contraction due to hot and cold weather (this can be common in vacation homes and homes that have been left vacant due to the fact that the internal temperature of the home has been allowed to get higher and lower depending on the outside temps)
6. Earthquakes – if the home is in an area that has trimmers or earthquakes
7. Truss uplift – can create cracks where interior walls meets ceiling (read more)
8. Poor quality workmanship in taping the drywall joints. (Too much mud, too little mud, missing drywall tape, and drywall secured with internal stresses are some causes)
- Removal of 'Pop-corn,' textured or 'cottage cheese' looking ceiling material may leave a drywall taping job that tends to crack at the drywall joint. This often happens because the home builder knew that they were going to texture the ceiling, so they had the drywall contractor put on less coats of drywall mud over the joints since it would save money and would be covered with a textured material. i.e. a 'pop-corn' ceiling material. With fewer coatings over the joints, the more likely a crack will develop.
Some cracks may be a 'Red' flag under a few circumstances.
Wide cracks or cracks that run at an angel or diagonally may be a 'Red' flag. It is important to note that while these cracks should be looked at more closely, these types of cracks may not be serious. Whether or not these cracks are serious is dependent on the particular circumstances.
If concerned, do a quick structural check of the home
First step outside the home and walk around the exterior; check for:
- Cracks in the foundation or is it bowed or leaning(READ MORE)
- Cracks in the siding or stucco (a few small cracks are common)
- Does the roof sag or is it bowed
- If there is a basement, check for cracked or bowing walls
Walk around the inside:
- Are the floors level or sloping
- Do any doors rub the flooring
- Are any doors or windows sticking
- Look for sagging ceilings and bowed walls
Arma: cold war assault mac/linux for mac. The above items can be an indication that a structural issues may exist, depending on the location and severity. If so, some of these issues may need to be addressed to help keep the drywall cracks from coming back.
Who can fix drywall cracks?
Handymen, homeowners, painters or drywall tapers
For the majority of cracks a painter would be the appropriate person to seal and cover the cracks. At times, a drywall contractor or a skilled handyman who can tape and mud joints may be needed. There are many products that can be used such as mesh tape, mesh patch kits, drywall mud and caulking. In some instances depending on the type of texture on the wall, it may be difficult for the homeowner to properly match the existing texture pattern. In this case an experienced drywall contractor is recommended although the majority of small cracks can be filled and repainted such that they cannot be noticed easily. By using a mesh tape product the crack is less likely to show up again. Simply applying some drywall mud or spackle will not be very strong and you may find that even the normal expansion and contraction from temperature fluctuations may be enough to cause the crack again.
Additional Resources
If a load bearing wall is removed, there are structural issues and risks that homeowners and buyers should know.
Do you believe that tree roots can really cause the drywall to crack in a home?
When the drywall tape in a corner area or where the wall meets the ceiling has a wrinkled look, then it may be caused by humidity, workmanship or movement
Know which ceiling cracks are serious and which ones are cosmetic.
Drywall nails and screws sticking out or sunken in? Is the house new or old? Then..
Has the drywall tape come loose or is there wrinkles in it? Then..
How do you recognize mold and get rid of it? Does Insurance cover it?
Mold may cause or aggravate health issues under some circumstances.
Can you get rid of mold yourself? Are there legal considerations?
Find out what's causing those unsightly squiggly lines that have marred your paint job—and learn how to remedy the situation.
Photo: istockphoto.com
Q: I recently noticed a few cracks in our living room wall. I'm not sure if they've been there for a while and I just missed them, or if they're new. Are cracks in the walls easy-fix cosmetic problems—or signs of a structural issue that will need extensive repairs?
A: Wall cracks are fairly common in both new and older homes and are often the result of normal house 'settling' that can quickly, inexpensively be remedied by re-taping the joints—the seams where the drywall panels meet. Occasionally, however, cracks in walls signify a larger problem that should be addressed before you attempt to repair the crack. Here's how to determine if the crack is flagging a serious problem, and what steps to take to get your wall back in shape.
RELATED: 6 Low-Cost Lifesavers to make Wall Repair a Cinch
Causes of Cracks in Walls
If your home was recently built, cracks in walls could be the results of 'new home' settling.
New lumber, sometimes called 'green lumber,' contains a high level of moisture and tends to move slightly as it dries out, so small wall cracks are common in newly built homes. It's a good idea to wait a year after your home was completed before repairing any cracks. This gives the wood time to dry completely. After that, you can re-tape the cracked joints (see the last section below for how-to info) without worrying that more will appear.
Photo: istockphoto.com
Hairline cracks over doors and windows are likely due to settling.
Houses of any age move and shift subtly over time, and the weakest area in a wall is the most likely to crack. A wall is constructed with vertical studs that extend from floor to ceiling. The studs must be cut, however, in order to install a door or a window. While the builder adds extra framing to the adjacent studs, these areas are still weaker than the rest of the wall, and when settling occurs, these spots are the first to develop cracks. Hairline cracks across walls and doorways do not indicate a structural problem; they should simply be re-taped and painted.
Leaving a house vacant can cause wall cracks.
Vacation homes and those that sit empty for a few months are prone to developing cracks in both walls and ceilings. This is due to the house not being climate controlled as it would be if it were occupied. Fluctuations in temperature and humidity levels can cause framing members and drywall to expand and contract, resulting in cracking. Like other wall cracks, these can be re-taped and painted.
A thin straight crack could be the result of faulty taping.
When drywall panels are installed, the seams between the panels are filled with drywall mud and covered with paper tape. If the tape doesn't have enough mud underneath to stick firmly, it can start to pull away from the wall over time. When this happens, you'll see a fine crack where the tape has lifted. If there's only one crack, try squirting a little household glue behind it and pressing it back into place. If the tape is lifting in multiple areas, however, your best bet is to re-tape all the seams because the problem will continue to recur.
Discoloration around the edges of the crack indicates a leak.
Water leaking from a window or the roof, or even a leaky attic water line, can run down inside a wall's framing and saturate the drywall, which then softens and deteriorates, creating a crack with noticeable yellow or brownish stains. If the leak is fresh, such as from a recent rain, the area might also feel damp to the touch. Before fixing the crack, which will require replacing the damaged section of drywall and then re-taping, it's important to find the source of the leak and repair it.
Large, jagged, or diagonal cracks could indicate a structural problem.
Jagged or diagonal cracks indicate that the foundation may have shifted or sunk, or another problem has occurred, such as the deterioration and collapse of supporting wood members due to termite damage. Likewise, cracks wider than one-quarter inch indicate a potential problem with the home's structure. These cracks warrant bringing in a reputable builder or engineer to inspect your home's structure and pinpoint the cause. Once the structural problem is resolved, you can make drywall repairs, which involve replacing the damaged drywall panel(s) and then re-taping the joints.
Photo: istockphoto.com
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Repairing Cracks in Walls
The best way to repair a crack in drywall is to re-tape the joint.
This involves scraping away the loose tape and crumbled bits of drywall mud, sanding the surface smooth, and then filling the crack with drywall compound and applying new tape. The trick to getting a smooth wall is to apply two to three very thin coats of drywall compound over the paper tape, and sand each coat after it dries before applying the next coat.
Filling cracks with spackle is not recommended.
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The spackle does not provide the same reinforced surface coverage you'll get by re-taping, and any slight settling will cause the crack to show up again. For long-lasting repairs, re-tape cracks rather than filling them with spackle.
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