How to Measure for the Squareness of Walls

Save

When builders use the words "square" or "plumb," they are referring to the angle of the walls. Walls set at a proper 90 degree angle are easier to apply boards to and are stronger than those that aren't 90 degrees. Determining if a wall is square isn't necessarily difficult. You can use the Pythagorean theorem (a2+b2=c2) to ensure the walls are square or use carpenter's tools such as a carpenter's square and level. Longer levels yield more accurate results, so if you're using the level method, use the longest level you can find.

Things You'll Need

  • Tape measure
  • Level
  • Carpenter's square

Pythagorean Theorem

  • Measure out 3 feet away from the corner of one wall and make a mark.

  • Measure out 4 feet from the corner on the adjacent wall and make a mark.

  • Measure the distance between the two marks. If the measurement between the two marks isn't 5 feet, the wall isn't square.

Carpenter's Tool

  • Set the level against the wall horizontally. If the wall is square, you'll find the bubble in the center markings of the level. Retest the wall going up a few feet and then down a few feet to ensure the placement of the bubble in the level.

  • Set the level against the wall vertically. If the wall is square, you'll find the bubble in the center markings of the level. Retest the wall going over few feet left and right to ensure the placement of the bubble in the level.

  • Place a carpenter's square in the corner where two walls meet. If the square sits flush in the corner two adjacent walls are square. Retest the carpenter's square up and down the corner to ensure the carpenter's square sits flush in the corner.

Tips & Warnings

  • Although builders try to get walls square in a home, it doesn't always happen. You may need to use shims to adjust the angle of the wall before applying bead board, plywood or dry wall to studs.

References

  • Photo Credit Jupiterimages/Comstock/Getty Images
Promoted By Zergnet

Comments

You May Also Like

  • How to Square a Wall Frame

    Wall frames constructed of 2x4 inch lumber are the essential building blocks of many structures. Whether you're building a house, a shed,...

  • How to Lay Travertine Without Spacing

    The beauty of travertine as a natural stone comes from its myriad patterns and colors. While installing the stone with a grout...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!