# Mudjacking vs Polyurethane Foam | Foundation Repair Baton Rouge > Mudjacking costs less; polyurethane foam weighs less, cures faster and uses smaller holes. Which is better for Baton Rouge driveways, patios and walks. URL: https://foundationrepairbatonrougelouisiana.com/guide/mudjacking-vs-polyurethane-foam/ Decision Guide·Methods compared # Mudjacking vs Polyurethane Foam — Which Is Better? The two ways to lift sunken concrete, compared on cost, weight, cure time and how each behaves on wet Louisiana clay. By Foundation Repair Baton Rouge · Published September 22, 2026 · Updated September 22, 2026 **Both work; the better choice depends on the job.** Mudjacking costs about $4–$9 per square foot and fills big voids well. Polyurethane foam costs about $8–$25 per square foot but weighs a few pounds per cubic foot instead of about 100, uses 5/8-inch holes, and cures in minutes — often better on Baton Rouge’s soft, wet clay. [Foundation Repair Baton Rouge](https://foundationrepairbatonrougelouisiana.com/) offers both, because each wins in different situations. ## Side by side Mudjacking Polyurethane foam Material Cement-based slurry Expanding two-part polyurethane Cost $4–$9 / sq ft $8–$25 / sq ft Weight ~100 lb per cubic foot A few lb per cubic foot Hole size ~1–2 in ~5/8 in Cure time ~24 hours ~15 minutes Water resistance Can erode over time Waterproof Best for Large voids, budget jobs Soft or wet soil, quick return to use Source: HomeGuide 2026 mudjacking and polyjacking data. ## Why weight matters in Baton Rouge A lot of sunken flatwork here sits on soft, wet clay. Pumping 100-pound-per-cubic-foot slurry under a slab adds load to the soil that already failed. Lightweight foam adds almost none. On a driveway that sank next to the garage over poorly compacted backfill, that difference can decide whether the lift holds. Want us to recommend one for your slab? Free laser survey and a written per-piling price. [(225) 635-8757](tel:+12256358757) ## When mudjacking still wins On a large void under a low-traffic walk or patio where the soil underneath is reasonably firm, mudjacking’s lower material cost makes it good value. It’s also a proven, decades-old method with predictable results. ## What matters more than the material Water. Almost every sunken slab we lift in Baton Rouge had water washing out its base — a downspout, sprinkler or yard runoff. Seal the joints and move the water, or either material will be lifting the same panel again. See [concrete leveling](https://foundationrepairbatonrougelouisiana.com/concrete-leveling/) and [mudjacking cost](https://foundationrepairbatonrougelouisiana.com/guide/mudjacking-cost/). ## Bottom line Foam for soft, wet ground and fast turnaround; mudjacking for big voids on a budget. For a recommendation and price, call Foundation Repair Baton Rouge. Questions about your house? Call Foundation Repair Baton Rouge. [(225) 635-8757](tel:+12256358757) ## Quick answers ### Is polyjacking better than mudjacking? Foam weighs much less, uses smaller holes and cures in minutes, which makes it the better choice on soft, wet soil and where you need the surface back quickly. Mudjacking costs less and fills large voids well. ### How long does polyurethane foam jacking last? Foam doesn't wash out or break down in soil, so the lift lasts as long as the soil beneath stays stable — which depends mostly on controlling water. ### Does mudjacking really work? Yes. It's been used for decades. Its main drawbacks are larger holes and the added weight of the slurry on soft soil. [ Related service Concrete Leveling Raising sunken patios, walks and garage slabs with mudjacking or polyurethane foam — a fraction of the cost of tear-out. $4–$25 per sq ft See the service](https://foundationrepairbatonrougelouisiana.com/concrete-leveling/) Get a Free Quote Free on-site evaluation · written price More guides - [How Much Does Mudjacking Cost?](https://foundationrepairbatonrougelouisiana.com/guide/mudjacking-cost/) - [Pressed Pilings vs Steel Piers vs Helical Piers](https://foundationrepairbatonrougelouisiana.com/guide/pressed-pilings-vs-steel-piers-vs-helical-piers/) - [What Is the Best Time of Year for Foundation Repair in Louisiana?](https://foundationrepairbatonrougelouisiana.com/guide/best-time-of-year-for-foundation-repair/) - [Can You Live in Your House During Foundation Repair?](https://foundationrepairbatonrougelouisiana.com/guide/can-you-live-in-your-house-during-foundation-repair/) - [Is It Safe to Buy a House With Foundation Repair?](https://foundationrepairbatonrougelouisiana.com/guide/buying-a-house-with-foundation-repair/) [All guides](https://foundationrepairbatonrougelouisiana.com/guide/) [Foundation Repair Baton Rouge Stop guessing at the number Book a free evaluation and get a written, per-piling price for your house. (225) 635-8757](tel:+12256358757) Book your free foundation evaluation Start with clear answers from an experienced team. Tell us what you are seeing, and we will call back the same business day to arrange your free evaluation. Faster by phone: [(225) 635-8757](tel:+12256358757)