BISupply House Jacks for Leveling Crawlspace 1 Pack - Adjustable 12

In this review the BISupply House Jack is presented as a straightforward temporary support for homeowners and contractors tackling sagging floors or unstable joists. The bottom line: it is a sturdy, simple-to-use screw pole jack that lifts and stabilizes sections of floor during repairs and renovations, and it is most useful when a temporary, adjustable column is required rather than a permanent foundation solution. The reviewer found it reliable for bracing and leveling tasks and particularly valuable where a compact adjustable support from 12 to 16in is needed.

Key Features

• Adjustable Height: The screw jack adjusts from 12 to 16in, letting users fine tune support while raising a low spot or stabilizing a joist.
• High Load Capacity: Rated to support up to 9,700lb per jack, it provides heavy-duty temporary support across all height extensions for repair work.
• Solid Construction: ISO9001 certified oxide finished steel and a welded-on base plate give the post sturdy contact with concrete floors and reliable lateral stability.
• Turning Bar Operation: The included turning bar and screw bolt make incremental lifting straightforward, allowing controlled jacking without specialized tools.
• Large Roof Plate: A sizable top plate distributes load to the beam or joist being supported and works with the supplied locking pins to hold position.

Who It's For

The BISupply screw jack is aimed at homeowners doing floor leveling, contractors performing interior structural repairs, and anyone needing a temporary support in crawlspaces, basements, or under stairs and trusses. It is useful for lifting bouncy floor areas, stabilizing joists during sistering, or holding a beam while permanent repairs are made.

It is not intended as a permanent foundation solution, so property owners seeking a long-term engineered pier or permanent structural column should look elsewhere. Also, users who need a height range beyond 12-16in or integrated permanent footings should choose a different system.

Pros & Cons

Pros

• Sturdy steel construction and a welded base plate make the jack feel durable and dependable under load.
• High weight capacity up to 9,700lb gives confidence when supporting heavy beams or sections of floor.
• Simple screw jack and turning bar operation permits precise, incremental lifting without power tools.
• Good value for the material and function for temporary bracing jobs.

Cons

• Designed only for temporary use, so it is not a substitute for permanent structural repairs or engineered piers.
• Some customers reported mixed installation experiences, with occasional missing hardware noted by a few users.

Specifications

Application	Temporary floor and joist support
Height Range	12-16in (30.48-40.64cm)
Weight Capacity	Up to 9,700lb (4,400kg) per jack
Material / Finish	Oxide finished steel, ISO9001 certified
Base Diameter	3in (7.62cm) diameter base post with welded-on floor plate
Included Hardware	Turning bar, large roof plate, 4 locking pins

Our Verdict

The BISupply House Jack is a practical, cost-effective temporary support for leveling and stabilizing floors during repairs; its strong steel construction and high load capacity make it a reliable choice for homeowners and contractors who need an adjustable 12-16in screw jack. For those requiring permanent foundation work or a wider height range, professional engineered solutions are a better fit, but for short-term bracing this jack delivers good value.

Frequently Asked Questions

Is this jack suitable for permanent support?
Answer. No, it is specified as a temporary support and should not be used as a permanent structural solution.

How is the height adjusted?
Answer. Height is adjusted by turning the screw bolt with the supplied turning bar, allowing precise incremental lifts between 12 and 16in.

Can it be fixed to a concrete floor?
Answer. Yes, the base plate is designed to be secured to a concrete floor slab before extending for improved stability during use.