By: Josh Fulfer
Estimated Read Time: 4 Minutes

You Just Got the Call

Homeowner says there’s a big gap under their steps, patio, or walkway. The slab is still level. No cracks. No trip hazards. Just empty space where soil used to be.

This isn’t just a service call — it’s a fast-turn, high-trust revenue opportunity if you handle it right.

Why This Job Is Gold

• Fast turnaround: Usually under two hours on site.
• High trust factor: You’re preventing future damage, not just fixing what’s already broken.
• Low competition: Most contractors aren’t marketing void fill as a standalone service.
• Upsell potential: Drainage corrections, joint sealing, annual inspections.

Step 1: Educate Fast

Homeowners don’t always understand why a gap is a problem. Explain in plain language:

“Right now, your slab’s weight is resting on just a few points instead of solid support underneath. Over time, those points fail — that’s when it cracks or drops. We can fill the space completely with high-density polyurethane foam so it’s supported like it should be.”

Step 2: Sell the Poly Advantage

They may mention mudjacking. That’s your opening to position poly as the smarter, longer-lasting solution:

• Lightweight: Won’t add heavy load to unstable soil.
• Water-resistant: Won’t wash out in the next big rain.
• Expansive fill: Reaches every corner of the void.
• Fast cure: Usable in minutes, not days.

Step 3: Stack the Value

Don’t just quote “void fill.” Build a package:

• Void fill: Poly foam injection to restore support.
• Joint sealing: Lock out water and prevent new washout.
• Drainage adjustment: Redirect downspouts or sump discharge.
• Annual checkup: Optional spring inspection to catch early movement.

Step 4: Document for Marketing

This is a perfect job for quick photo and video content. Shoot a short clip of the foam expanding under the slab. Show the before shot with visible daylight and the after shot with full contact. This isn’t just proof for the customer — it’s marketing and training content you can reuse for months.

Step 5: Price With Confidence

• Price the solution, not just the injection.
• Anchor against the cost of lifting a dropped slab or replacing concrete.
• Present the upsells as smart prevention, not add-ons.

Bottom Line

When you get a void fill call, you’re not just fixing a hidden problem — you’re preventing a visible one. That’s high-trust work, easy to close, and a great way to fill your schedule with quick, profitable jobs. Educate the customer, sell the advantage, stack prevention services, and capture the job for your marketing. The more of these you book, the more your reputation — and your revenue — will grow.