2026 Tariffs Are Raising Roof Replacement Costs in St. Louis: What Homeowners Should Know

Roofing materials in the St. Louis market are getting more expensive, and the increases are not temporary. GAF, Owens Corning, and CertainTeed have all announced price increases of 6% to 10% on shingles and roofing accessories effective June 1, 2026, according to distributor letters published by Mueller Roofing Distributors on May 23, 2026. This is the second round of manufacturer increases in 2026, following a 4% to 8% round in April. Combined with a 25% federal tariff on imported steel and aluminum that took effect in March 2025, every category of roofing material now costs more than it did 12 months ago. Here is what that means for St. Louis homeowners planning a roof replacement.

What Price Increases Have Roofing Manufacturers Announced for 2026?

Three of the four largest shingle manufacturers in North America have announced price increases effective June 1, 2026. These are documented in official distributor letters, not rumors or projections:

Source: Mueller Roofing Distributors vendor news page (published May 23, 2026), reproducing official manufacturer letters. CertainTeed’s letter states that all orders shipped on or after June 1, 2026, will be invoiced at the new price regardless of order entry date.

These June increases come on top of a prior round in April 2026 (4% to 8% across GAF, Owens Corning, CertainTeed, and Atlas), which itself followed 6% to 10% increases in early 2025. The increases are cumulative, not replacements of each other.

Why Are Roofing Materials Getting More Expensive?

Two forces are driving costs up simultaneously: federal tariffs on raw materials and rising petroleum-based input costs.

Steel and aluminum tariffs. In February 2025, the federal government imposed a 25% tariff on all imported steel and aluminum, removing previous country-specific exemptions. This directly affects metal roofing panels, flashing, drip edge, roof vents, and the steel fasteners used in every shingle installation. The National Association of Home Builders (NAHB) estimates that tariffs have increased the cost of a typical new home by approximately $10,900, with building material costs now 40% above December 2020 levels.

Chemical input tariffs. Asphalt shingles are manufactured domestically by GAF, Owens Corning, CertainTeed, and Atlas, but the chemical building blocks of those shingles (MDI isocyanate, flame retardants, fiberglass mat, petroleum derivatives) are subject to tariffs on Chinese and other foreign imports. These tariffs increase the raw material cost for manufacturers, who pass those increases through to contractors and homeowners.

Petroleum input costs. Asphalt is a petroleum byproduct. When crude oil prices fluctuate, asphalt costs follow. GAF’s June 2026 distributor letter specifically cites “sustained surge in key raw material costs” as the reason for the increase.

Transportation surcharges. CertainTeed’s May 2026 distributor letter announces a separate freight surcharge increase effective May 11, 2026, on top of the material price increase. Fuel costs and carrier availability affect every truckload of shingles delivered to St. Louis supply houses.

How Much More Will a Roof Replacement Cost in St. Louis?

In early 2026, a full tear-off and re-roof with architectural asphalt shingles on a typical 2,000 square foot St. Louis home cost $8,500 to $15,000 installed. After the June 2026 manufacturer increases take effect, expect those numbers to shift upward by roughly 6% to 10% on the material portion of the project.

Since materials account for roughly 35% to 50% of your total project cost (the rest is labor, disposal, and overhead), a 6% to 10% material increase translates to approximately 3% to 5% on your total installed price. On a $12,000 job, that is $360 to $600 more than the same project would have cost in January.

Metal roofing projects face a larger impact because the 25% steel and aluminum tariff affects the primary material directly, not just chemical inputs. Standing seam metal roofs in the St. Louis market, which already run $16,000 to $28,000, will absorb a proportionally larger increase than asphalt shingle projects.

Will Prices Come Back Down?

History says no. After the 2018 and 2019 steel and aluminum tariffs, roofing material prices never returned to pre-tariff levels. The NAHB has documented that building material costs are now 40% above where they stood in December 2020, a rate significantly higher than general inflation over the same period. Each round of manufacturer increases establishes a new cost baseline.

Roofing contractors in the St. Louis market generally hold pricing for 30 to 60 days after providing an estimate. Once the June 2026 increases take effect, contractors will update their pricing to reflect the new material costs. Any estimate you received before June 1 should be confirmed with your contractor before signing to ensure it still reflects current pricing.

What Should St. Louis Homeowners Do Right Now?

If you know your roof needs replacement in the next 12 to 18 months, the financial case for moving sooner rather than later is straightforward. Here is a practical approach:

Get estimates now. Lock in pricing before the June increases fully propagate through the supply chain. Most contractors honor quoted prices for 30 to 60 days. An estimate secured in late May or early June may still reflect pre-increase material costs if the contractor pre-ordered materials.

Do not wait for prices to drop. Three rounds of manufacturer increases in 12 months, combined with federal tariffs that show no sign of reversal, point to a market where today’s price is the lowest price for the foreseeable future.

Consider Class 4 impact-resistant shingles. The premium for upgrading to Class 4 shingles (10% to 20% above standard architectural) has not increased as steeply as the base price of standard shingles. That means the relative cost of the upgrade is shrinking while the insurance savings (10% to 35% annually in Missouri) remain the same. The ROI on impact-resistant shingles is better in 2026 than it was in 2025.

Check your insurance before storm season. If your roof sustains storm damage after these price increases, the replacement cost your insurance covers should reflect current material prices, not last year’s. Make sure your dwelling coverage amount is adequate. An underinsured home gets a reduced payout that may not cover the actual cost of replacement at 2026 prices.

Ask about financing. If the upfront cost is a concern, spreading the payment over 12 to 60 months locks in today’s pricing while making the project manageable. Waiting 12 months and paying a higher price does not save money.

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