Quoted rock wool sandwich panel prices on Okorder and Made-in-China.com sit in a US$8.30-19.80/m² band for PU edge-sealed steel-faced panels at 500 m² MOQ as of 2026-03-25, while basalt rock wool boards list from US$2.00-10.00 per piece and US$3.00/m² for bulk insulation grades [S4][S5][S10].
The spread is driven by three variables buyers can move: core density (80-200 kg/m³), facing steel thickness (0.26-0.8 mm PPGI), and panel thickness (30-200 mm), all of which are quoted explicitly in current supplier listings [S1][S9]. For a full sandwich-panel view across core materials, the sandwich panel price 2026 cost map lines rock wool, PIR and EPS cores against the same decision criteria.
Price bands observed on Chinese B2B portals, 2026-Q1/Q2
Rock wool sandwich panels with PU edge sealing list at US$8.30-19.80/m² FOB China at 500 m² MOQ on Glostar Panel's Made-in-China storefront, with stated monthly supply capability of 1,000,000 m² on competing Okorder listings [S4][S9]. Raw rock wool boards (un-faced, basalt) start at US$2.00-10.00 per piece from Luyang Energy-Saving, with thermal-insulation rock wool slabs also surfacing at US$451.00/ton from Shandong-based Tai'an suppliers shipping through Qingdao [S5][S7].
Lower-tier entries — premium rock wool insulation boards for general construction — are listed at US$3.00/m² at 5 m² MOQ by Zhejiang Huahang Insulation Products, which serves as the price floor for the segment [S10]. Container-house integrated rock wool wall systems price much higher at US$899-1,599/set or US$1,550-1,599/piece, but that figure covers a finished prefab building module rather than the cladding alone [S8].
Cost drivers: density, steel facing, and edge sealing
Density is the single largest cost lever: Okorder's standard spec quotes 100 kg/m³ as the baseline core, with thicker variants (150-200 mm) stepping up to roughly 120 kg/m³ for fire-rated roof applications [S1][S9]. At 100 kg/m³ the panel carries an A-class non-combustible rating per Chinese GB/T 5464 test methodology commonly cited in these listings, and λ sits around 0.040 W/(m·K) — a figure consistent with the basalt-slag chemistry used by all surveyed suppliers.
PPGI steel facing thickness is the second lever. Standard commodity pricing assumes 0.3-0.8 mm outer skin; the fireproofing roof-panel listing offers 0.26-1.0 mm as the option range, with each 0.1 mm of steel adding roughly 0.8-1.2 kg/m² to the panel mass and a corresponding step in price [S1][S9]. PU edge sealing, as supplied by Glostar, is the third premium feature — it closes the otherwise open rock wool edge to cut air leakage and moisture ingress, and commands the upper half of the US$8-20 band [S4].
Specification comparison across the main product options
Four rock wool panel formats are commercially available in volume, and they line up as follows on the decision criteria that drive total cost: [S1]
1) Raw rock wool board (un-faced, basalt): US$2-10/piece, 80-120 kg/m³ density, λ ≈ 0.040 W/(m·K), used behind curtain wall or as mechanical-room insulation; lowest material cost but no structural function [S5][S10].<br>2) Standard steel-faced sandwich panel, no edge seal: US$8-12/m², 100 kg/m³ core, 0.4-0.5 mm PPGI, suitable for industrial-plant walls and roofs; the workhorse spec [S1][S9].<br>3) PU edge-sealed sandwich panel: US$13-20/m², same core/facing, but sealed joint for cleanroom, cold-storage, and high-humidity environments; this is the Glostar premium tier [S4].<br>4) Integrated prefab container house module with rock wool wall: US$899-1,599/set, fully finished, for site offices and worker camps; the price reflects a complete building, not a cladding SKU [S8].
Total cost of ownership: framing, fixings, and lifetime
Rock wool sandwich panels quote long-life, low-maintenance performance: the fireproofing roof listing claims good high-temperature resistance and fast installation that saves labor cost, with no periodic recoating required compared to single-skin metal cladding [S1]. Installed cost on a typical 10,000 m² industrial roof in Southeast Asia or the Middle East runs roughly 1.4-1.6× the FOB panel price once structural purlins, fasteners, flashing and lifting are added; the saving versus built-up roofing (deck + vapor barrier + insulation + membrane) is typically 20-30% on labor, even before the fire-rating benefit is priced in.
For external-wall retrofit on existing steel structures, the comparable cost line — including rails, brackets, and joint sealing — tends to converge with cold-formed steel framing, and the rock wool panel material reference catalogues the densities, fire classes, and λ ranges that the buyer can map back to the supplier price table. Buyers comparing sandwich panels to other envelope systems should also note how rock wool interfaces with curtain-wall framing detailed in the aluminum veneer panel reference — particularly for back-ventilated rainscreen detailing where the rock wool sits in the cavity.
Limitations: where rock wool panels underperform
Rock wool's open fiber structure absorbs water if the PU edge seal is omitted or damaged; even a 1-2% moisture pickup by mass degrades λ by roughly 10-15% and adds permanent mass to the panel [S1]. For high-humidity, freeze-thaw, or coastal-salt environments, the sealed PU edge is therefore not an upgrade but a baseline requirement — and any quote under US$10/m² for a 100 mm panel is suspect if it does not include edge sealing [S4].
The other constraint is panel mass: a 100 mm panel at 120 kg/m³ core plus 0.5 mm steel faces weighs 14-16 kg/m², which limits the practical unsuported span to roughly 6 m for roof applications. Beyond that, secondary purlin costs erode the labor-saving advantage the suppliers advertise, and the spec must move to a double-span or high-profile rib configuration.
Sourcing signals: capacity, MOQ, and Incoterms
The two largest quoted supply capabilities among surveyed listings are 1,000,000 m²/month (Okorder Rockwool Core Facade Sandwich Panel) and 900,000 tonnes/year for raw rock wool (Tai'an Shandong producer), both FOB Tianjin or Qingdao with TT or LC payment terms [S7][S9]. MOQs in this segment cluster at 500-1,000 m² for finished panels and 5 m² for boards, with the lower MOQ products typically drawing from inventory rather than production slots [S4][S10].
Trackable signals for the next 6-12 months: any new A1/A2 fire-rated listings at 80 kg/m³ (lower-density commodity grade entering the supply chain), and any shift in the US$8-20/m² band tied to PPGI steel coil price moves, since steel typically accounts for 30-40% of the finished panel cost at 0.4-0.5 mm facing. Reference data on the rock wool panel encyclopedia entry carries the full density, λ, and fire-class breakdown that maps back to these B2B quotes.
Spec-level background on the components involved: linear guide.