Building materials break every rule the parcel and dry-van world runs on. Brick is heavy and dense. Lumber is long. Concrete products are awkward and weigh a ton before they even look big. Scaffolding is a pile of odd shapes that nobody wants to hand-stack. So you call around, and you hear one of two things: “we can’t take that,” or “sure, but it’s going to cost you.” Then the invoice shows up and proves them right in the worst way.
Here is the good news. Most building-material shipments are not full-truck loads. They are partial flatbed loads. You have freight that needs an open deck, but not a whole trailer. That is exactly the gap partial flatbed fills, and it is where you stop overpaying.
Why building materials belong on an open deck
Open decks load from the side and the top. That matters when your freight is long, tall, or has to come off by forklift or crane at the jobsite. A dry van makes you push everything in through the back doors, which is how long steel and stacked lumber get refused or damaged.
Here is how the common materials tend to ride:
- Brick and block. Dense and heavy. A few pallets can hit the weight limit long before they run out of deck space. Banded, palletized, and blocked so they don’t shift.
- Lumber and structural steel. Long freight. This is what triggers Linear Foot charges on traditional LTL. On an open deck it just gets laid out and strapped.
- Concrete products. Pipe, precast, pavers, and bagged mix. Heavy, sometimes irregular, and better loaded from the top or side than shoved through a door.
- Scaffolding and rebar. Bundled, banded, and secured as units so the load stays tight down the lane.
The partial flatbed sweet spot is roughly under ten feet of deck space and under about 10,000 pounds. A lot of building-material orders land right in that range.
The invoice trap you are trying to avoid
This is the part that burns building-material shippers most. Traditional LTL prices low-density and long freight with accessorial rules like the Density Minimum Charge and the Linear Foot Charge. Brick is dense, so it can trip density rules. Lumber and steel are long, so they can trip linear-foot rules. Either way, a quote you thought was settled can balloon after the freight is already gone.
Here is an illustrative example, not a quote:
| What you saw | What can happen |
|---|---|
| A quoted LTL rate you budgeted around | A much larger bill after a Linear Foot or Density Minimum Charge is applied |
The number can swing hard, and you find out after delivery. That is not a way to run a bid or a jobsite budget. If you want the full breakdown of how these charges work, we walk through it in our accessorial explainer.
With FlatbedLTL, the partial flatbed quote is locked in. It is not subject to the Density Minimum Charge or the Linear Foot Charge. You pay for the deck space your freight needs, and the number you got is the number you pay. That is a feature, not a favor.
When it’s a partial, and when it isn’t
We would rather point you to the right mode than sell you the wrong one.
- Palletized, not open-deck freight? If your materials are boxed, shrink-wrapped, and don’t need side or top loading, dry-van Volume LTL may fit better and cost less.
- Filling a whole trailer? If you have enough brick or steel to load a full flatbed, or you need oversized or specialty open-deck, that is Comet National Shipping territory. Comet handles full flatbed, full van, reefer, and oversized loads.
- Somewhere in between, open-deck, under a full truck? That is partial flatbed. That is us.
Secured for the road, delivered to the site
Open-deck freight is only as good as the securement. We plan tie-downs around aggregate Working Load Limit against cargo weight, block and brace so nothing walks, and secure each material type to spec. Partial loads can dispatch direct from origin to destination too, so your brick or lumber isn’t bouncing through terminal after terminal, collecting handling damage and lost days on the way to the jobsite.
Everybody wins here. You pay for the deck you use, the carrier fills empty deck space, and your materials show up intact and on schedule.
Got a load of brick, lumber, concrete, or scaffolding that LTL won’t touch, or quoted low and billed high? Get a locked-in partial flatbed quote at /get-a-quote, or call us at (800) 831-5376.