The relationship between price changes and market share is not consistent across building materials categories. In roofing, GAF and Owens Corning raised prices and gained unit share. In front doors, lower average selling prices in 2024 did not boost units. In drywall, expanding a single SKU to 5% more Lowe’s stores is a $23 million opportunity. Assortment, price, and inventory interact differently in every category — the manufacturers who see that at the SKU level are the ones growing.
Roofing: Price Increases That Gained Share
Roofing supplies at Home Depot, Lowe’s, and Menards tell a counterintuitive story. GAF and Owens Corning dominate the market and both raised prices in 2024 — yet both gained unit share. Owens Corning picked up one share point from 2023 to 2024 while increasing ASP by 7.6%. Atlas and Warrior Roofing lost share over the same period.
This category is not price-sensitive in the traditional sense. When a homeowner needs a roof, they need a roof. GAF’s charcoal laminated shingle grew from $58 million to $77 million — up $18 million and 24%. Pricing power exists in categories where the purchase is non-discretionary and brand trust matters.
Front Doors: Lower Prices Did Not Move Units
Front doors tell the opposite story. Average selling prices dropped in 2024, yet unit performance did not improve. At Home Depot, the quarters with the lowest ASP — Q2 and Q3 — were the same quarters where 2023 outpaced 2024 in unit sales. At Menards, unit sales were softer in every quarter except Q1.
Steel doors account for over half of front door sales, but fiberglass was the only growth driver from 2023 to 2024 — steel declines more than offset fiberglass gains. Consumers are shifting toward fiberglass despite its higher price point, meaning price sensitivity in this category is attribute-driven, not dollar-driven.
Drywall: The Store-Level Efficiency Play
Drywall reveals a different lever entirely — distribution. At Home Depot, USG dominates at 86% share, but ToughRock emerged as the fastest-growing competitor. At Lowe’s, CertainTeed led in 2023 at 35% but lost ground to ToughRock, which overtook the top spot. Gold Bond and American Gypsum fueled Lowe’s growth.
The clearest opportunity came from comparing total sales to sales per store. American Gypsum’s top SKU at Lowe’s ranked second in sales velocity but 13th in total sales — it sold fast wherever it was stocked but was in very few locations. Expanding that SKU to just 5% more Lowe’s stores is a $23 million opportunity. A second SKU represents another $9 million. These are distribution gaps visible only at the store level.
Stockouts Are the Hidden Share Thief
In front doors at Lowe’s, Therma-Tru’s share losses tracked directly to stockouts. One Shaker entry door with nationwide distribution lost nearly $100,000 in Q3 alone, with $64,000 concentrated in Pennsylvania. Masonite gained share at Therma-Tru’s expense — not through pricing or promotion, but by keeping product on the shelf.
At Home Depot, Jeld-Wen increased prices and still gained unit share. The difference was availability — Jeld-Wen corrected early-year supply issues while competitors could not. Inventory health determined share movement more than pricing strategy did.
In roofing, an Everbilt underlayment SKU grew total sales by $9 million but on-hand inventory dropped nearly 50%. Sales per store declined $2,100 per month. The brand was growing topline revenue while losing efficiency — invisible in aggregate data.
The Three Levers Work Together
Topline data does not tell the complete story. A brand can grow revenue while losing efficiency. A price cut can fail to move units. A dominant share position can mask distribution gaps worth tens of millions. The manufacturers making the best decisions look at assortment, price, and inventory together at the SKU and store level — not in isolation.
Datavations tracks every SKU, every store, every sale across 11,936+ locations daily, with assortment, pricing, and inventory optimization tools that quantify these opportunities with the click of a button.
Does lowering prices always increase market share in building materials?
No. In front doors, lower average selling prices in 2024 did not boost unit sales compared to 2023. In roofing, GAF and Owens Corning raised prices and gained share. Price sensitivity varies dramatically by category, and the impact depends on whether the purchase is discretionary, attribute-driven, or need-based.
How do stockouts affect brand share at Home Depot and Lowe’s?
Stockouts can shift share between brands within a quarter. At Lowe’s, Therma-Tru’s front door share losses tracked directly to higher lost sales from out-of-stocks, with one SKU losing nearly $100,000 in Q3 alone. Brands that corrected supply issues — like Jeld-Wen — recovered share even while raising prices.
What is store-level sales efficiency and why does it matter?
Sales efficiency compares a SKU’s sales per store to its total sales. A product can rank low in total sales but high in per-store performance, indicating it sells well wherever it’s stocked but has limited distribution. Expanding these high-efficiency SKUs to more stores is often a multimillion-dollar opportunity invisible in aggregate data.
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