Adjustable Structural Supports Since 1951.

Floor Leveling 101 - House Jacks

Floor Leveling with Ellis Steel Shores


Floor leveling with Ellis Steel ShoresELLIS STEEL SHORES are a fast and safe way to re-level and support sagging floor joists in residential applications. The Ellis Steel Shores are available in many different heights with various lengths of screw adjustment. They are available with or without thrust bearings in the adjustment nut. The purpose of the bearings is to reduce friction when making adjustment under load and making it easier to jack weight.

Choose from three types in various lengths:
LIGHT DUTY / LIGHT DUTY WITH BEARINGS / HEAVY DUTY.



Details on How to Fix Your Sagging Floors with Ellis Steel Shores

  1. Measure Height:
    Measure the total shoring height (floor to beam).
  2. Determine appropriate Steel Shore to use.  Choose a Steel Shore that will fit in your space and provide enough adjustment and load capacity to correct your sagging joist.
  3. Place Steel Shore on a solid and flat foundation directly under the joist in need of additional support. 
  4. Raise Screw and top plate.  Simply turn the Steel Shore Nut to raise the top plate until it is in direct contact with your joist.
  5. Check to be certain your Steel Shore is plumb and level.  Re-position shore if needed.
  6. Slowly turn Steel Shore nut to correct sagging joist. 
  7. Tighten safety lock set screw with an Allen wrench to lock adjustment nut in place.
  8. Fasten the top plate to your joist with duplex nails or screws.

*Steel Shores come standard with a 3/8"x6"x6" (light duty) or 1/2"x8"x8" (heavy duty) flat plate.  Top plates are interchangeable with U-Heads designed to straddle both sides of your joist.  Choose from a variety of options:  U-Heads for Light Duty Steel Shores.


Floor Leveling with Ellis Screw Jacks



In the video above are Ellis 4x4 Screw Jacks and Ellis Purlin Splicers used to level the sagging floor in a house with conventional flooring.

Homeowners use Ellis 4x4 Screw Jacks to level the sagging floor. Access to the underside of the floor was obtained through a crawl space. For a solid foundation, the Screw jacks were placed on concrete piers. Then 4x4 lumber was placed inside the screw jacks. Next, the 4x4 Lumber was secured to a horizontal 4x6 beam using an Ellis Purlin Splicer and then jacked into position.



Details on How to Fix Your Sagging Floors with Ellis Screw Jacks:

  1. Simply cut your lumber to proper length:
    · Measure the total shoring height (floor to beam).
    · Subtract the total height of the object you will set the Ellis Screw Jack on top of from the total shoring height; for example, a pier block (like pictured above).
    · Subtract 9.5” if you are using a 4x4 or 11” if using a 6x6 Ellis Screw Jack. This is the total distance from the bottom of the square tubing of the Screw Jack (this is where the lumber will sit inside the jack) to the base of the Screw Jack.
  2. Attach lumber to Screw Jack w/ duplex nails through holes on opposing sides of Screw Jack.
  3. Attach Ellis Purlin Splicer / Beam Holder / Joist Holder with duplex nails to the joist / beam where floor raising is desired. 
  4. Slip 4x4 or 6x6 Lumber into Purlin Splicer / Beam Holder / Joist Holder and attach to with duplex nails.
  5. Screw Jack to height.
    Ellis Screw Jacks can be adjusted a full 6". This can be accomplished by turning the handle by hand, hitting the handle w/ a hammer or placing a 2x4 between the screw and handle for extra leverage when tur
  6. Check to be certain your Steel Shore is plumb and level.  Re-position shore if needed.
  7. Tighten safety lock set screw with an Allen wrench to prevent adjustment.

**For proper leveling, use Ellis Screw Jacks every 2'.

**If loads require more than 4000 lbs. of LIFTING capacity use the Ellis Hydraulic Jack for extra lifting power.

Contact us today, or visit the All Products Section to see the materials that would work best for your next home project.

From
$98.75
Light Duty Steel Lifting Shores / Lifting Jack Post
Options Available
Light Duty Steel Lifting Shores / Lifting Jack Post
From
$76.25
Light Duty Steel Shores / Jack Post
Options Available
Light Duty Steel Shores / Jack Post
From
$161.25
Heavy Duty Steel Lifting Shores / Jack Post
Options Available
Heavy Duty Steel Lifting Shores / Jack Post
From
$62.50
4x4 Screw Jack
Options Available
4x4 Screw Jack
From
$86.25
6x6 Screw Jack
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6x6 Screw Jack
From
$50
Timber Jack
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Timber Jack
From
$210
Bridge Jack
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Bridge Jack
From
$63.75
Hydraulic Jack
Options Available
Hydraulic Jack
From
$23.75
Joist Holder
Options Available
Joist Holder
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