Bulk Aggregates for Patios in Hull, IA

Planning a patio, a paver walk or a new drive usually starts with one question: what goes underneath. Iowa Rock Supply sells gravel and aggregate delivery in Hull, IA, and most flatwork around here begins with Class A roadstone as the compacted base.

From there you pick the bedding layer that sits right under the pavers, plus sand, clean rock or black dirt for the rest of the job.

Ground and Conditions in Hull

Hull sits on the Northwest Iowa Plains, where older glacial deposits lie under a loess mantle. Silt loess on long slopes rills and gullies quickly under hard rain.

That ground moves when it gets wet, and a thin base shows it first. Edges drop, pavers rock, and joints open up within a season or two.

The fix is a base that carries the load and a bedding layer that stays put on top of it. Class A roadstone is crushed limestone with the fines left in, so it binds and compacts into a firm platform.

Drainage matters too. The stream network across this part of the state drains well, so the problem is usually runoff speed rather than standing water.

Heavy storms arrive as short, hard events.

Frost also works on gravel surfaces here. The frozen season is long and wind drives frost deep, then the spring thaw heaves what was flat.

Frost depth is commonly 42 inches, and you should confirm the local figure with the building official, as northwest Iowa winters run colder than the state average.

The working season runs long once frost is out, but drying winds and low rainfall mean new base and new seeding both need water held on them.

Materials for Hull Projects

Bedding is where a patio succeeds or fails. Limestone Screenings, also called screenings or 3/8 inch minus screenings, are the fines that bed pavers and flagstone, fill joints and top dress a compacted roadstone base.

Under that bedding layer, Class A Roadstone is the standard base course for driveways, parking pads, shed bases and farm lanes. The 3/4 inch crushed limestone with fines left in binds and compacts.

For a new drive, a soft spot or a lane that carries heavy equipment, 1 Inch Roadstone is the coarser grade, laid under a finer surface course.

Sand has its own place in flatwork. Washed Sand beds and levels under slabs and pavers, and works as sand fill where a clean, free draining grade is wanted.

Mason Sand handles brick and block mortar, paver joints and play areas.

Where water needs to move, Clean Rock is washed and open graded, so it goes to subdrains, drainage tile backfill, pipe bedding and behind retaining walls. Round stone belongs to a different job: River Rock is decorative, for beds, borders and dry creek beds.

For lawn repair, grading and bed prep, Top Soil is the screened black dirt Iowa yards ask for. Garden Soil is blended richer for raised beds and vegetable plots.

Delivery to Hull and the Surrounding Area

You order online and choose a quantity by the ton or by the yard. Bulk material arrives on a dump truck and tips in one pile on your site.

Sizing the load is the part worth getting right. Each product page has a calculator for that, and it is the fastest way to turn a project into a number.

Delivery covers Hull and Sioux County, including Sioux Center, Orange City, Rock Valley, Hawarden and Alton. Pick your delivery date at checkout and the truck brings the material to the address you enter.

Questions About Gravel and Aggregate in Hull

What gravel is best for a driveway in Hull?

Start with Class A roadstone as the base course, then top it with driveway gravel or a finer surface stone. Class A roadstone is 3/4 inch crushed limestone with the fines left in, so it binds and compacts.

If the drive is new or the ground is soft, 1 inch roadstone goes down first as a coarser layer under the surface course.

How much material will my project need?

Quantities are ordered by the ton or by the yard, and each product page has a calculator to size the load from your project. Have your area and the depth you plan to build to ready before you order.

That gives you a number to enter at checkout instead of estimating by eye.

Get Your Hull Project Sized and Ordered

Work out your quantity with the calculator on the product page, then order the material online and pick a delivery date. Iowa Rock Supply delivers Class A roadstone, screenings, sand and clean rock to sites across Hull and Sioux County.

When your numbers are ready, place the order and a truck will tip the load on site.