Inorganic subsoil for filling holes, raising low ground, and backfill. Small rocks and bits of stick or root are normal in the mix, this is structural material and not a growing medium. Do not use it to level a lawn surface or fill flower beds, put topsoil over it for anything you want to plant. Place it in lifts and compact as you go.
First time going with this company for mulch and it was an efficient process from start to finish. Website was easy—I told them exactly where I wanted the mulch put on my driveway, and it was delivered perfectly when I got home from work the next day. Best deal around when I c...
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How Much Fill Dirt Do I Need?
One cubic yard of fill dirt covers about 54 square feet at a 6 inch depth, which is the shallow end of a typical install. For deeper builds around 12 inches, plan on roughly half that coverage per yard, so measure the low area's square footage and match it against the depth you actually need before ordering. Since it's sold by the cubic yard, rough out length times width times depth in feet, divide by 27, and round up. Estimate fill dirt with our free topsoil calculator
What is a Yard?
A yard is approximately 27 cubic feet. As a general guideline, one yard of material can cover an area of about 100-160 square feet at a 2-3 inch depth.
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Why order through Mulch Mound
The best local fill dirt, without the guesswork.
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If your fill dirt isn't the quantity or quality you ordered, we'll make it right.
About this fill dirt
Inorganic subsoil for filling holes, raising low ground, and backfill. Small rocks and bits of stick or root are normal in the mix, this is structural material and not a growing medium. Do not use it to level a lawn surface or fill flower beds, put topsoil over it for anything you want to plant. Place it in lifts and compact as you go.
First time going with this company for mulch and it was an efficient process from start to finish. Website was easy—I told them exactly where I wanted the mulch put on my driveway, and it was delivered perfectly when I got home from work the next day. Best deal around when I c...
How Much Fill Dirt Do I Need?
One cubic yard of fill dirt covers about 54 square feet at a 6 inch depth, which is the shallow end of a typical install. For deeper builds around 12 inches, plan on roughly half that coverage per yard, so measure the low area's square footage and match it against the depth you actually need before ordering. Since it's sold by the cubic yard, rough out length times width times depth in feet, divide by 27, and round up. Estimate fill dirt with our free topsoil calculator
What is a Yard?
A yard is approximately 27 cubic feet. As a general guideline, one yard of material can cover an area of about 100-160 square feet at a 2-3 inch depth.
First time going with this company for mulch and it was an efficient process from start to finish. Website was easy—I told them exactly where I wan...
Read full review
First time going with this company for mulch and it was an efficient process from start to finish. Website was easy—I told them exactly where I wanted the mulch put on my driveway, and it was delivered perfectly when I got home from work the next day. Best deal around when I compared it to competitors and I will definitely be becoming back.
Wonderful experience! They put the mulch exactly where we wanted. This mulch spread very easily and didn’t have the usual “mulch smell.” We will de...
Read full review
Wonderful experience! They put the mulch exactly where we wanted. This mulch spread very easily and didn’t have the usual “mulch smell.” We will definitely use again!
Most fill dirt jobs in Seaford finish with a layer of topsoil on top once the grade is set, especially if lawn or planting beds are going back in over it. If you're building up around a pool or foundation, a compactable base material underneath the fill can help lock in the grade before you cap it. Mulch or stone comes in after, once the structural work is done.
Sandy loam like what's common around Seaford compacts unevenly if you dump fill in one big pile and walk away. Place it in lifts of 6 to 8 inches and compact each layer before adding the next, using a plate compactor for anything structural like a patio base or pool deck. Skipping this step is the number one reason people end up with a sunken spot two years later that has to be dug out and redone.
Mulch Mound Pro Tip
The most common mistake with fill dirt is treating it like topsoil and planting straight into it. It's subsoil, screened of debris but not amended, so grass and roots struggle in it directly. Always cap with 4 to 6 inches of real topsoil before seeding or planting, and keep that distinction in mind when you're deciding how many total yards to order for a build up job.
Mulch Mound Pro Tip
If your project involves both raising grade and finishing with lawn or beds, order fill dirt and topsoil as separate deliveries rather than trying to blend them yourself on site. It's easier to place fill first, compact it, then cap with topsoil in a clean second layer than to mix materials in a wheelbarrow. This also lets you size each order accurately instead of overbuying one to stretch the other.
Grading and Filling in Seaford
Seaford sits at about 10 feet of elevation with sandy loam soil, which drains fast but also settles and shifts more than people expect once you pile new material on top. That combination means low areas near foundations, sheds, and pool decks are common here, and raw fill dirt is the right tool to correct that grade before anything else goes in. Because the native soil is sandy, fill needs to be compacted in lifts rather than dumped and left, or it will keep settling through wet seasons. This is not a growing medium, so any spot near lawn or garden still needs a topsoil cap.
What Fill Dirt Is
Fill dirt is inorganic subsoil sold for volume and grade, not for growing. Small rocks and bits of stick or root are normal in the mix. It compacts predictably, which is exactly what you want under slabs, in trenches, and behind walls.
Fill Dirt vs Topsoil
Fill dirt builds the shape of the ground, topsoil grows things on top of it. Bring the grade up with fill, then cap it with 4 to 6 inches of topsoil anywhere grass or plants are going in.
Compact in Lifts
Place fill in layers of 4 to 6 inches and compact each one before adding the next. Dumping the full depth at once leaves voids that settle later, and settling is the one problem fill is supposed to solve.
Frequently Asked Questions
Click a question to see the answer
Answer
Can I use fill dirt to level my backyard before putting in grass?
Yes, but plan for two materials. Use fill dirt to build up the low area and compact it in layers, then cap with a few inches of topsoil before seeding. Fill dirt alone won't support grass well since it's subsoil without the organic content roots need.
Answer
How many cubic yards do I need to raise a 200 square foot low spot by 6 inches?
At 54 square feet per cubic yard at 6 inches, 200 square feet needs a little under 4 cubic yards. Round up to account for compaction after placement, so 4 to 4.5 yards is a safer order for that size area.
Answer
Do I need to compact the fill dirt myself or does it settle on its own?
It will settle on its own eventually, but unevenly and over months or years, which is a problem near foundations or hardscape. Compact it in 6 to 8 inch lifts as you go, especially for anything structural. For a simple low spot in the lawn that isn't load bearing, natural settling with a rake pass is usually fine.
Answer
Where will the fill dirt be dropped and do I need a big driveway?
The truck drops the load wherever there's safe, clear access, typically a driveway or the curb closest to your project area. You don't need a huge space, but a path wide enough for the truck to maneuver helps, and keeping the drop spot close to where you're working saves a lot of wheelbarrow trips.
Answer
Is fill dirt the same as topsoil, and can I use either one?
No, they serve different purposes. Fill dirt is subsoil for building up grade and structural backfill, while topsoil has organic content that supports plant growth. Use fill dirt for the bulk of a raise and cap it with topsoil wherever grass, gardens, or landscaping will go on top.
