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Wall cracking in houses and when it is an issue

5/8/2019

1 Comment

 
Most clients will notice the walls have cracked but are unsure if it is an issue to be concerned about or not. There is no simple answer, as it depends on the amount of cracking, the location of the cracking in relation to other cracks and the size of the crack width. 
Hairline cracking is normal (cracking less than 0.1mm in width) and can be associated with the plaster work drying out at the construction stage. The mortar around brickwork also can have small cracks which is quite normal. 
Cracking that is more noticeable (but less than 5mm in width ) is also not a real issue and normally occurs over or around windows and door openings. Cracks this size are easily filled and will probably re open seasonally, due to shrinkage of the ground when drying out and close up again in the wet season from the ground swelling due to excess moisture. This is of course dependent of soil type.
Larger wall cracks (cracking 5mm to 15mm) do require some maintenance work depending on the locality of the cracking. Any localised cracking with multiple cracks in one area, such as above a doorway should have the loose brickwork removed and re instated to rectify the issue. With wall cracking up to 15mm, windows and doors may require maintenance and adjustment to open and close. Weatherproofing around windows may be an issue 
Extensive cracking (15mm to 25mm) may involve replacement of wall sections and slab underpinning. Walls may be bulging with serious house structural issues. A report should be obtained at this point by a structural engineer if you are still wanting to purchase the property. Most underpinning companies will have a report written up by their engineer that you can purchase prior to deciding on what course of action you take, this report will however cost around $1,500. 
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1 Comment
Grand Rapids Waterproofing Pros link
30/11/2021 07:03:02 pm

Unfortunately, cracking in your walls and ceilings may also be the result of damage to your foundation. If you're seeing large cracks that are more than a quarter-inch wide or other signs that have you concerned about your foundation, it's definitely time to have your home checked.

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