Prices Up, Demand Down: The Squeeze Playing Out on Every Job Site

August 3, 2026 · 4 min read · By the RoofTree Digest desk

Shingle shipments are at multi-year lows, but prices keep climbing anyway — here's what's really driving your material costs this quarter.

The Math That Shouldn't Work — But Does

Normally, when demand falls off a cliff, prices follow it down. Not this time. ARMA's Q1 2026 numbers show U.S. asphalt shingle shipments down 9.9% year-over-year to 38.1 million squares — the softest first quarter in years. Meanwhile, every major manufacturer raised prices anyway.

GAF, CertainTeed, Owens Corning, Atlas, and TAMKO all announced increases in the 4–8% range effective between March 23 and April 15. That's on top of a January round most contractors already ate. RoofVista's tracking confirms it: four major manufacturers stacked April increases directly on top of January's.

If you're wondering why your supplier's price sheet keeps changing while your bid volume doesn't, this is why. Manufacturers are managing margin through price, not volume — and they've got cover to do it.

Why Owens Corning Isn't Blinking

Owens Corning's own numbers tell the story from the mill side. Roofing revenue fell 27% year-over-year in Q4 2025 to $774 million, with Q1 2026 guidance calling for another low-20% decline. That's a serious demand hole.

Yet OC's forward guidance expects roofing demand to recover to historical averages in the second half of 2026 — and that recovery expectation is exactly why they're not discounting now. Manufacturers are pricing for the rebound they see coming, not the soft quarter they're in. Translation: don't wait around for shingle relief. If OC's right about H2, the window for softer pricing may already be closing.

The Factory-Gate Number Nobody's Talking About

The BLS Producer Price Index for asphalt shingles hit an all-time high of 370.0 in August 2025 and was still sitting at 360.6 in February 2026. Put in perspective, that's roughly 3.6 times the 2007 baseline. And that index doesn't even reflect the April 2026 increase letters yet — the "modest pullback" from August's peak doesn't survive contact with spring pricing.

Bottom line on shingles: factory costs are structurally elevated, not cyclically high. Don't budget like this is a spike that reverts to the mean.

Metal, Tariffs, and the 50% Problem

If shingles are annoying, metal roofing is the real casualty. The June 2025 doubling of Section 232 tariffs — from 25% to 50% on imported steel and aluminum — is now fully baked into the supply chain. As of January 2026:

Steel mill products: up over 20% year-over-year
Aluminum mill shapes: up 33% year-over-year

Layer in current steel coil pricing — hot-rolled coil around $1,002/ton, structural steel averaging $2,519.61/ton — and metal roofing is absorbing an estimated 60% increase tied directly to these tariffs. That's not a rounding error on a bid; that's a category that needs re-pricing from scratch, not adjusting.

Other material categories, ranked by tariff exposure:

Metal roofing: ~60% increase (steel/aluminum tariffs)
TPO/single-ply membranes: 12–18%
Tile: 8–15%
Asphalt shingles: 6–10% tariff-related, plus the separate 4–8% April manufacturer hikes stacked on top

It's Not Just the Metal — It's Everything Metal Touches

Here's the part that hits every job regardless of roof type: fasteners, flashing, and drip edge are all steel or aluminum, and they're all getting hammered. NRCA and RoofingContractor data show flashing, drip edge, and fastener costs up 15–25% directly from the Section 232 tariffs.

It gets worse for general fasteners specifically. With tariffs now covering an expanded list of over 400 product categories at 50%, screws, nails, bolts, and structural fasteners are running 30–50% higher than a year ago. These are line items contractors used to barely think about. They deserve a hard look on every estimate now.

Even the Chemistry Is Getting Taxed

The tariff story has moved past metal into the chemical inputs that make roofing products work. MDI — a key adhesive and sealant component used across underlayment and membrane products — faces 60% anti-dumping duties on Chinese imports. TCPP flame retardants are facing tariffs of 272.7%.

This matters because it means underlayment and single-ply membrane costs aren't just riding on the metal tariff story — they've got their own separate chemical-input squeeze happening simultaneously. The 2026 tariff environment is broader than past cycles: it's metals, it's chemicals, it's practically every input category at once.

What This Means for Your Estimates

Re-quote fasteners and flashing separately. A 15–50% swing on these line items can quietly erode margin on jobs priced off last year's numbers.
Lock material pricing on metal roofing bids before you present them. A 60% input swing means a two-week-old quote from your distributor may already be stale.
Don't bank on a shingle price correction. PPI data and OC's own H2 guidance both point to prices holding, not falling.
Build tariff volatility into contract language. Price-escalation clauses aren't just for commercial jobs anymore — they're becoming standard risk management on residential contracts too.

Bottom Line

This isn't a normal supply-demand cycle. Demand for asphalt shingles is at multi-year lows, and prices are still climbing because manufacturers are pricing off tariff-driven input costs and an anticipated H2 recovery — not off current sell-through. Metal roofing is taking the biggest hit from Section 232, but the fastener, flashing, and chemical-input squeeze means every roof system on your truck is getting more expensive, just by different amounts. Price your jobs like the current cost environment is the new normal, because right now, that's exactly what the data says it is.