Buy Gravel & Rock in Granby, Colorado

Contractors working on new foundations or road bases order gravel and rock by the truckload, while homeowners tend to buy smaller amounts for patios or paths. In Granby, the soil conditions make the choice of base material especially important. Soils mapped in the Granby area are commonly poorly drained, which means more base stone may be needed under the surface layer to keep the project stable.

The drainage behavior of the ground around Granby also matters. Where it is drained the soil soaks up water quickly, but where it is not drained most rain runs across the surface. This dual hydrologic group means the right base depth depends on your specific site, not just a general rule.

Gravel and rock sizes for Granby

Gravel and rock for Granby comes in sizes from fine crushed stone to large river rock. The right choice depends on the project and the drainage needs of your area.

Gravel and rock for common Granby projects

Matching the material to the job prevents problems later. Here are five typical projects and the gravel or rock that works best.

Granby weather and soil matters

Ground freezing here is deep and long. That changes how deep your base layer needs to be. A base that is thick enough prevents shifting when the thaw comes.

Ground that freezes deep moves as it thaws, which is why the base layer matters more here than the top layer. Soils mapped in the Granby area are commonly poorly drained, so more base stone under the surface layer helps keep the project stable.

The ground around Granby is in dual hydrologic group A/D. Where it is drained it soaks water up quickly and produces little runoff; where it is not, it takes water in very slowly. This means drainage and a deeper base matter more here than elsewhere. Grand County permitted about 212 single-family homes in 2024, a county figure that indicates ongoing construction demand for gravel and rock for foundations and driveways.

Estimating your gravel and rock order

To figure tonnage, measure the area length and width in feet, multiply by the depth in inches, then divide by 12 and multiply by the material's density. Use the material calculators on our site to get a precise number for your Granby project.

Ordering gravel and rock from Gravel Monkey

You order online by the ton and choose a delivery window at checkout: morning from 7 am to 12 pm, or afternoon from 12 pm to 5 pm. Delivery is priced by ZIP code and loads run from one ton to over 40 tons. Free delivery applies on qualifying orders.

You get an email confirmation when the order is placed, then a second email closer to the date with the scheduled window and a photo of the material being loaded. Delivery only goes ahead once you approve that second email. You must be available or have someone at the site during the window. A valid phone number is required.

First-time customers can use code FIRSTTIMER50 to take $50 off their first order. For more about how we work, see our About Gravel Monkey page, check out customer reviews, and read delivery information.

Other materials to pair with gravel and rock

Pair gravel and rock with these materials to solve common site problems.

• Crushed Concrete, A compacting base that drains well and works under pavers.
• Fill Dirt, Use to build up low spots before placing gravel or rock.
• Crushed Gravel, Angular stone that locks together for driveways and lanes.
• Walkway Gravel, Small, smooth gravel that stays in place on pathways.
• Crushed Stone, Clean, angular material for drainage layers and decorative beds.
• Sand, Fills joints between pavers and helps level the base.

Frequently asked questions

Does the length of the freeze season in Granby change what I should order?

Yes. Ground freezing here is deep and long, so you need a thicker base layer to prevent shifting as the soil thaws. A 6 to 8 inch base of crusher run or road base is standard for driveways that see freeze-thaw cycles.

Is Granby wet enough that drainage should drive the choice?

Yes. The ground around Granby is in dual hydrologic group A/D, so drainage behavior depends on whether the site has been tiled or remains undisturbed. On poorly drained sites, using drain rock or a thicker base of crushed stone keeps water from collecting under the surface.

What size gravel and rock should I choose?

It depends on the project. Fine crushed stone like decomposed granite compacts to a firm path. Medium pea gravel is comfortable for patios. Larger river rock stays in place on slopes and in dry creek beds. Base materials like crusher run and road base are sized to lock together under weight.

Is there a discount on a first order?

Yes. Use code FIRSTTIMER50 at checkout to get $50 off your first order from Gravel Monkey. The code applies once per customer.

Order gravel and rock for Granby

Ready to start your project? Visit our Granby page to get started with an online order. Our team will schedule delivery to your address at a time that works for you.

Gravel Monkey sources from a network of regional suppliers, so the exact product may vary by location. Talk to us if you need a specific size or color for your Granby job.

We also deliver to nearby communities

• Fraser
• Winter Park
• Nederland
• Kremmling
• Georgetown
• Black Hawk
• Estes Park
• Silverthorne
• Dillon
• Idaho Springs