• Boulder CO Fill Dirt Delivery - Mulch Mound
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Boulder Fill Dirt Delivery

About this fill dirt

Screened fill dirt free of debris, for raising low ground and backfilling. Structural material, place it in lifts and compact as you go.
Ryan Cully
Ryan Cully
Google 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 c...

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 fills, foundation backfill, or raising a low yard by 12 inches, plan on roughly half that coverage per yard and measure the actual depth needed before ordering. Most residential grading jobs in Boulder run somewhere between 5 and 20 cubic yards depending on how much low ground there is to fix.

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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Boulder Fill Dirt Delivery

Boulder Fill Dirt Delivery

4.7
137 reviews
$38.00 per Yard
$38.00
Sale Sold out
Shipping calculated at checkout.
Type
Size
Hand-picked local yards
4,000+ regional deliveries
Dedicated support
Why order through Mulch Mound

The best local fill dirt, without the guesswork.

We hand-pick and partner with the best yards in your region, keep only the ones our buyers rate well, and back each load with our guarantee.

Mulch Mound Guarantee

If your fill dirt isn't the quantity or quality you ordered, we'll make it right.

About this fill dirt

Screened fill dirt free of debris, for raising low ground and backfilling. Structural material, place it in lifts and compact as you go.
Ryan Cully
Ryan Cully
Google 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 c...

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 fills, foundation backfill, or raising a low yard by 12 inches, plan on roughly half that coverage per yard and measure the actual depth needed before ordering. Most residential grading jobs in Boulder run somewhere between 5 and 20 cubic yards depending on how much low ground there is to fix.

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.

FAQs

Read all FAQs

View full details

How It Works

Getting started is easy — just follow these simple steps

1

Choose your quantity

Adjust the quantity to match your project. One cubic yard covers about 100 to 160 square feet at a 2 to 3 inch depth.

2

Select your delivery date

Select a delivery date you'd like for the product to be dropped off at your home

3

Sit back and wait

Sit back, wait, and let us work our magic to make sure the highest quality product is delivered to your driveway.

From The Mouths of Boulder Folks

4.7
out of 5 based on 137 reviews
Google Reviews
Ryan Cully
Ryan Cully

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.

Google Review
Lindsay Mangan
Lindsay Mangan

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!

Google Review

Complete Your Outdoor Project

Fill dirt is almost never the last thing placed on a job. Cap it with screened topsoil once you are near finish grade if lawn or beds are going in, or leave it as is if it is going under a patio base or gravel. A lot of Boulder customers order fill and topsoil in the same delivery window to keep the project moving in one pass.

Boulder Soil Delivery
Boulder Mulch Delivery
Map of the fill dirt delivery area around Boulder, Colorado

Service area

Areas we deliver fill dirt in Boulder, Colorado

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Mulch Mound Pro Tip

Place fill dirt in 6 to 8 inch lifts and compact each one before adding the next, especially in Boulder's clay loam, which holds moisture and settles unevenly if it is dumped in all at once. A plate compactor or hand tamper for smaller areas is worth renting. Skipping this step is the number one reason people end up with a sunken patch two years later, right where the old low spot used to be.

Mulch Mound Pro Tip

Do not plant or seed directly into fill dirt. It is subsoil, stripped of the organic matter that made your original topsoil workable, and it will not support root growth or drainage the way finished soil does. Cap it with 4 to 6 inches of real topsoil once you are near finished grade, and keep that boundary in mind when you are calculating total depth for the project.

Mulch Mound Pro Tip

If you are filling a large area, order fill dirt and topsoil together rather than staging separate deliveries weeks apart. It saves a second trip charge and lets you compact the fill while the topsoil sits ready to go, which matters in Boulder where afternoon thunderstorms in summer can turn an open fill pile into a muddy mess overnight.

Grading and Filling in Boulder

Boulder sits on clay loam that drains slowly and swells when it is wet, so low spots stay soggy longer than people expect, especially with snowmelt off the Flatirons working its way downhill through spring. Fill dirt gets used here to raise those areas above the water table before anything else happens on top. It also shows up constantly around foundation and pool backfill on the older lots near downtown, where the original grading was never quite right. Because it is a structural material, not topsoil, it has to be compacted in stages or the ground keeps moving on you.

What Clean Fill Is

Clean fill is screened subsoil free of debris, roots, and contaminants. It is made for volume and grade, and 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

Is fill dirt the same as topsoil?

No. Fill dirt is subsoil screened of rocks and debris, meant to build up grade or backfill structurally. It has little organic matter and will not support planting on its own. Topsoil goes on top of fill once you reach near finish grade, if lawn, beds, or anything living needs to grow there.

Answer

How many cubic yards do I need to fill a low spot in my yard?

One cubic yard covers about 54 square feet at 6 inches deep. Measure your low area in square feet, decide how many inches deep it needs to be filled, and scale from there. A 200 square foot area filled 6 inches deep needs roughly 3.7 cubic yards, rounded up for compaction.

Answer

When can I start building on fill dirt after it is delivered?

Once it is compacted in lifts, not before. Spread and compact it in 6 to 8 inch layers rather than dumping the full depth at once, or the ground will keep settling for months, sometimes years. In Boulder's clay loam, give each lift a solid compaction pass, especially if the area was wet from spring snowmelt.

Answer

Can a delivery truck get down my street or driveway?

In most cases yes, but tell us about tight turns, low branches, or steep driveways when you schedule. Some of Boulder's older neighborhoods near downtown have narrow streets or alley access that changes where the truck can park, so a heads up ahead of delivery day avoids a stalled truck on delivery morning.

Answer

Should I get fill dirt or a mix of fill and topsoil for my project?

If you are raising grade, backfilling a foundation, or building a base before hardscape, fill dirt alone is right. If the finished surface needs grass or plants, order fill for the bulk of the depth and cap the top 4 to 6 inches with topsoil, since fill dirt on its own will not sustain root growth.

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