Choosing the right floor supports for crawl spaces helps protect structures, stabilize beams, and reduce sagging floors during renovation or repair. This guide reviews five commonly used jacks and supports, highlighting load capacity, adjustability, and installation features. Each product is suitable for temporary or long-term stabilization in crawl spaces, basements, and under decks. Use the buying guide to compare options and determine which setup best fits your project scope and safety needs.
| Product | Brand | Approximate Load Capacity | Adjustability |
|---|---|---|---|
| Crawl Space DIY PolyBase Crawl Space Support Footer | Crawl Space DIY | Up to 21000 lbs | Precast footer; 43% lighter than concrete blocks |
| VEVOR Screw Jack Post | VEVOR | Up to 24700 lbs | 13.2″ to 18.7″ height |
| BISupply Basement Floor Jacks (1 Pack) | BISupply | Up to 9700 lbs per jack | 12″ to 16″ tall |
| Kerty House Jacks for Leveling | Kerty | Up to 6000 lbs | 19″ to 36″ telescoping |
| Everkeen House Jacks for Leveling | Everkeen | Up to 4000 lbs per unit (approx.) | 11″ to 16″ height range |
Below are five product-focused sections with direct links to each Amazon listing, followed by a practical buying guide to help you compare options for crawl spaces, basements, and under-structure projects.
Crawl Space Diy PolyBase Footer: Lightweight, Strong Crawl Support
The Crawl Space DIY PolyBase Crawl Space Support Footer offers a 21,000-pound load capacity with a design that improves workflow in the field. It features a double carbon fiber mat reinforcement, increasing strength while remaining significantly lighter than traditional concrete blocks. A built-in pipe pocket design streamlines installation by eliminating the need for a separate base plate. This combination supports durable stabilization for crawl space and foundation projects without the bulk of concrete products.
Key points: reinforced core for higher load bearing, 43% lighter than concrete blocks, and a pipe pocket design to simplify setup. This product is well-suited for contractors and DIYers seeking a lighter, easier-to-move option that still provides robust support in tight crawl space environments.
Asstinous 4 Pack Height Range Adjustable House Floor Jacks
This 4-pack of adjustable house floor jacks provides reliable leveling support across beams, decks, crawl spaces, and basements. The jacks offer multiple height options—ranging from lower to higher settings—to accommodate different floor elevations. They are designed for stability during home repairs, remodeling projects, and structural reinforcement, making them a versatile choice for multi-area leveling tasks in crawl spaces.
Highlights include robust leveling performance, an adjustable height range, and a practical kit size for projects requiring multiple supports without compromising space, particularly in cramped crawl spaces where precise leveling matters most.
VEVOR Screw Jack Post: Heavy-Duty and Adjustable
The VEVOR Screw Jack Post blends heavy-duty construction with straightforward operation. Built from sturdy Q235 steel, it supports up to 24,700 pounds and adjusts from 13.2 to 18.7 inches. The height is easily changed by rotating a lever, and the lever can be removed for convenient storage when not in use. This makes it ideal for lifting and stabilizing heavy crawl space loads during repairs or structural reinforcement projects.
Considerations include high load capacity, smooth height adjustment, and a simple mechanism that reduces the effort required for frequent adjustments in tight spaces. It is suitable for professionals and DIYers working on longer-term stabilization tasks under the home.
BISupply 1 Pack: Crawl Space Floor Jack Post
The BISupply floor jack post combines a practical 12 to 16-inch height range with a substantial lifting capacity of up to 9,700 pounds per jack. It is designed for temporary or adjustable bracing in crawl spaces, basements, and under joists. The product’s portability and straightforward screw-based height adjustment make it a versatile option for quick stabilization during renovations or foundation work.
Best uses include temporary shoring while deck work or foundation repairs occur, as well as general crawl space stabilization. The unit’s solid base and marked height range provide reliable, on-the-spot leveling support where space is limited.
Everkeen 8-Pack: Leveling House Jacks
The Everkeen 8-pack provides a balanced set for leveling and stabilization across larger crawl spaces and basement projects. Each jack offers an adjustable height range of 11 to 16 inches, with a focus on stable, long-term support for joists, floors, and beams. The kits are designed for modular use, enabling contractors or DIY homeowners to place multiple jacks as needed to distribute loads evenly and reduce sag or bounce in affected areas.
Key considerations include the capacity per unit, the total system capacity when using multiple jacks, and ease of use for repeated adjustments. These jacks are suited for projects requiring multiple points of support and consistent leveling across a broad area.
Buying Guide: Key Purchase Considerations For Crawl Space Floor Supports
- Load capacity: Match the jack or footer to the heaviest load you expect to bear. Consider both per-unit capacity and how many units you’ll need for even load distribution.
- Height adjustability: Look for ranges that align with your crawl space ceiling height and the elevation of the beams or joists you’re stabilizing. Wider ranges reduce the need for multiple tools or adapters.
- Material and durability: Steel construction with protective finishes resists corrosion in damp environments. Zinc-chrome or similar finishes improve longevity in crawl spaces.
- Ease of use: Quick-height adjustment, simple locking mechanisms, and removable levers can save time on installation, especially in cramped spaces.
- Stability and base design: A broad, stable base reduces the risk of sinking or tipping, particularly on uneven concrete or soil.
- Modularity: In projects with multiple support points, modular kits with several jacks help achieve even load distribution and reduce localized stress.
- Temporary vs. permanent use: Some jacks are best for temporary bracing during renovations, while others offer robust, long-term support for ongoing structural stabilization.
- Installation workflow: Features like pipe pockets, integrated base plates, or quick-connect designs can streamline setup and reduce labor time.
When selecting products, consider combining a few compatible pieces to cover all critical load points in a crawl space. For instance, a high-capacity screw jack paired with several adjustable floor jacks can provide controlled lifting and consistent support across multiple joists. Always follow manufacturer instructions and prioritize safety by verifying that all jacks are correctly positioned and locked before applying any load or removing temporary supports.