Bitumen Prices Swung 25%+ in 2026 — How to Quote a Job Safely

Bitumen doesn’t move on its own. It moves because crude oil moves, and in 2026, crude had one of its most volatile years in over a decade. If you’ve been quoted a driveway or a road job this year and the number looked different from last month’s, this is why — and what to do about it.

The trigger: a war shut down 20% of the world’s oil route

On February 28, 2026, the US and Israel began military operations against Iran. Iran retaliated by targeting commercial shipping in the Strait of Hormuz — the narrow channel between Iran and Oman that roughly a fifth of the world’s seaborne crude oil passes through.

Within days, Aramco halted operations at Saudi Arabia’s Ras Tanura refinery after a drone strike, and a fire broke out at the Fujairah oil-trading hub in the UAE. WTI crude, trading near $77 a barrel on March 3, climbed past $95 by mid-March. By March 27, Brent crude topped $111 a barrel — its highest level since June 2022 — with WTI up roughly 40% since the conflict began. Shipping insurers started pulling war-risk cover for vessels entering the Gulf, which added its own cost layer on top of the oil price itself.

Bitumen typically makes up 20% to 30% of the cost of producing asphalt. When crude spikes that hard, that percentage doesn’t stay theoretical — it shows up on the next delivery docket.

The numbers on the ground

A few concrete data points from 2026, not projections:

It didn’t resolve — it cycled

This is the part most coverage misses, because most coverage was written mid-crisis and never updated. The Hormuz situation didn’t spike once and settle. The US and Iran agreed a ceasefire in April 2026, then signed a memorandum of understanding in June. Conflict resumed in July, with Iran again targeting shipping it deemed non-compliant with its routing demands.

That pattern — spike, partial calm, spike again — is the actual risk. A price you lock in confidence this month can be stale by the time material is delivered.

What this means for a quote you’re getting right now

A few practical implications, in order of how much they should change your behaviour:

• 1

  Treat any bitumen or asphalt price as dated, not fixed. A supplier quote from six weeks ago reflects a market that may have already moved. Ask for the quote date and the index it’s tied to, not just the number.

• 2

  Ask whether the contract has an escalation clause. Many municipal and larger commercial paving contracts price against a published monthly asphalt index rather than a fixed rate. If you’re a contractor quoting a homeowner, a short-fuse validity window (7–14 days) on your material price protects you from the same swing working against you.

• 3

  Separate material cost from labour and prep cost in your own numbers. When bitumen moves 15–25% in a matter of weeks, you want to know exactly how much of your total quote that touches — not a single bundled figure you can’t reprice quickly.

• 4

  Re-run your numbers close to the order date, not the planning date. If you priced a job in March against that month’s rate and you’re ordering in September, six months of a genuinely volatile market sit between those two numbers.

• 5

  Watch regional divergence, not just a global headline figure. Vietnam’s bitumen demand rose sharply through 2025 while China’s softened — the same global crude spike doesn’t land the same way in every buying region, because local supply, tariffs and freight costs shift independently.

The one number worth updating before you quote

There isn’t a clean resolution date to point to here. The Strait of Hormuz situation was still being negotiated as of late August 2026, which means the sensible approach isn’t waiting for stability — it’s building the habit of repricing close to the order date, every time.