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.
cracked foundations can lead to framing issues, roof issues, problems with doors and windows and even leaks in basement walls. correction of foundation and structural problems can be very costly and occasionally foundation cracks will be a warning sign of other structural issues with a home.
cracked basement walls. this basement has a crack running horizontally along the block concrete wall. there's also a stair-step crack on each end of the horizontal crack, and the wall is bowed in about 1 in. you can't handle this cracked wall by simply filling the crack and finishing off the basement.
stair step cracks: sometimes when a concrete block foundation wall cracks in response to soil pressure or settlement, the cracking occurs along mortar joints between individual blocks. these can run throughout the wall and form a stair step pattern. stair step cracks often indicate a foundation problem that needs repair.
diagonal cracks: a diagonal foundation crack is one that runs from about 30 to 75 degrees from vertical on the wall. many times, diagonal cracks with be wider at one end than at the other and sometimes the crack will be very narrow also called a hairline crack .
which type of foundation cracks are most serious? what you need to know about foundation damage vertical cracks. of the foundation cracks you are likely to encounter, diagonal cracks. another common type of crack that you may encounter is a diagonal crack horizontal cracks. foundation cracks
larger cracks in your walls, however, can indicate structural or foundation problems. if the cracks in your walls exhibit these characteristics: the crack has a 3/16 or wider gap. one side of the wall is higher than the other. your doors no longer close in the frame.
diagonal basement wall cracks. you may also see a jagged crack running at a 45-degree angle this is an indication that your foundation has settled. when the crack is less than 1/4 inch wide at its widest point, then there is not need for alarm. these types of cracks while not as common are quite often seen in many homes.
cracks in a foundation wall could let termites into your home, or, if they get large enough, become a structural problem.
how to determine if the cracks in walls are serious stair-step cracks. a stair-step crack looks like a flight of stairs and runs in both vertical doors and windows. another way to test the seriousness of a wall crack is to open visible nails. study the wall area surrounding the crack and
vertical and diagonal cracks in concrete walls typically indicate foundation movement. if a vertical crack widens at the top or bottom, the wall is either settling or gradually heaving, which may present serious issues. stair-step cracks may also signify heaving. horizontal cracks in concrete walls, however, indicate poor wall designs or pressure buildup behind the wall. concrete walls containing horizontal cracks are serious issues.
moderate and major cracks in the foundation walls will also sometimes lead to warning signs throughout the house. if you notice drywall cracks in the upper-level walls and ceilings, misaligned doors and windows, cracking ceramic tile, sloping floors, or bowing walls,
fixing cracks in concrete walls 1. use a wire brush to clean the crack of all dirt, grease and loose grit. then vacuum up any residual dust and debris. 2. tap in a 3-in. finishing nail every 12 in. along the entire crack. the nails will be used to align the injection ports. 3. mix together equal
vertical basement wall cracks diagonal basement wall cracks. you may also see a jagged crack running at a 45-degree angle this is an horizontal wall cracks. these types of cracks are a different story they can lead to serious foundation concrete floor cracks. cracks in concrete basement
horizontal foundation cracks located low on a foundation wall earth loading, especially if in an area of dense or wet soils. horizontal dislocation of a masonry block or brick wall may appear first as a crack and then later as horizontal movement as a wall is pushed inwards by earth or wet soil
foundations are rigid and tend to crack over time. minor cracks, though unsightly, are not normally cause for alarm. major cracks, on the other hand, indicate substantial movement and can undermine the homes structural integrity. therefore, you cant just ignore cracks in a foundation or concrete slab. filling in these cracks and stopping them from
possible causes of cracks in foundation walls shrinkage of concrete or mortar: these cracks are tiny too narrow to admit your fingernail. soil settlement: if some of the soil beneath a foundation wall compresses or is washed away due soil pressure: outside the foundation, expansive clay soil
stair-step cracks in masonry joints are a bigger concern, especially if the wall is bulging or the crack is wider than ¼ inch. a plugged gutter or other moisture problem outside is probably exerting pressure on that part of the wall. horizontal cracks are most serious. it may be that water-saturated soil froze and expanded, pushing in and breaking the foundation.
angular cracks can occur in the top 12-16 inches of a brick wall that is laid directly on a concrete foundation. they are caused by brick expansion during summer months and the outer foundation corner being pushed with it. no need to repair them, as they'll likely occur every year as the temperatures heat up.
the foundation crack bible how to identify, diagnose and evaluate types of foundation and wall or slab cracks: this article provides a dictionary of different patterns and types of cracks that occur in all types of masonry or concrete building foundations and walls, floors, ceilings. how to evaluate foundation cracks and damage. how to evaluate vertical foundation cracks.