Market evolution: Mastics (CN 321410) — 2015–2025

Introduction

This report examines the EU's external trade in Glaziers' putty, grafting putty, resin cements, caulking compounds and other mastics; painters' fillings (CN 321410) over the period 2015–2025. The product category encompasses industrial mastics, sealants, and painters' fillings—materials used across construction, glazing, automotive, and general maintenance. The EU is a major global producer and a net exporter of these goods, with production value more than doubling over the decade from €1.4 billion to €3.3 billion.

Three defining dynamics emerge from the data: first, EU export growth has been almost entirely price-driven, with volumes actually declining; second, imports surged and diversified markedly, with several new supplier countries gaining ground; and third, the geopolitical upheaval of 2022–2023—particularly the near-total collapse of exports to Russia—reshaped the EU's trade orientation decisively.

1. Price-Led Export Growth in a Structurally Mature Industry

The EU's extra-EU exports of CN 321410 grew in value by 26.6% over the decade, rising from €1.34 billion in 2015 to €1.70 billion in 2025. However, this headline figure conceals a striking divergence: export volumes actually fell by 13.0%, from 474,754 tonnes to 413,018 tonnes. The entire increase in export revenue was therefore driven by unit price appreciation.

Export prices surged while volumes contracted

Average EU export prices rose from €2,829/t in 2015 to €4,116/t in 2025—a cumulative increase of 45.5%. The sharpest acceleration occurred between 2020 and 2022, when prices jumped from roughly €3,542/t to €4,663/t, coinciding with the global commodity and energy price surge of that period.

Sources: General Overview — Trade

Both sub-products followed the same pattern

The two constituent sub-categories—32141010 (mastics and putties) and 32141090 (painters' fillings)—exhibited the same volume-down, price-up dynamic in exports:

Painters' fillings saw an especially dramatic price trajectory, with unit export values nearly doubling—suggesting either a shift toward higher-value formulations or significant cost pass-through.

Production expanded strongly, yet exports did not keep pace in volume

EU production grew by 66.2% in volume (from 981,000 to 1,630,000 tonnes) and 133.3% in value (from €1.40 billion to €3.27 billion). Meanwhile, export propensity—the share of production exported—rose from 33.8% to 55.4%, and trade intensity increased from 42.1% to 61.1%. This suggests the EU's mastics industry became significantly more internationally oriented, even as the physical volume of exports declined. The implication is that a larger share of higher-value, higher-priced production was directed to external markets.

Germany anchors the EU's export position

Among EU Member States, Germany dominated exports with €731 million in 2025 (43% of the EU total), followed by Belgium (€215 million), France (€166 million), and the Netherlands (€114 million). Germany and Belgium together accounted for over half of all extra-EU exports. France saw the fastest growth among major exporters at +65.0%, while Estonia's exports declined by 37.4%.

2. A Diversifying Import Landscape with New Strategic Partners

While the EU's export story is one of price appreciation over stable-to-declining volumes, the import side tells a very different story: surging volumes, rapidly growing value, and a dramatic diversification of supply sources.

Import volumes and values both rose sharply

EU imports of CN 321410 grew from €300 million (92,570 tonnes) in 2015 to €469 million (139,542 tonnes) in 2025—a value increase of 56.0% and a volume increase of 50.7%. Unlike exports, import prices rose only modestly (+3.5%), meaning the increase was predominantly volume-driven.

Import sources diversified substantially

The most striking change on the import side is the sharp decline in import concentration. The Herfindahl-Hirschman Index (HHI) for import value fell from 3,533 to 2,605 (−26.3%), and for import volume from 3,726 to 2,102 (−43.6%). An HHI drop of this magnitude signals a meaningful shift away from reliance on a small number of suppliers toward a more distributed sourcing pattern.

Several countries emerged as major new or expanded import sources:

Source: Top Partners — Imports

The UK more than doubled its exports to the EU post-Brexit, likely reflecting the reclassification of previously intra-EU trade as extra-EU trade, combined with continued supply chain integration. Türkiye and Serbia, both geographically proximate and with competitive cost bases, expanded dramatically—Serbia's growth of nearly 1,500% is consistent with its deepening integration into European manufacturing supply chains.

Painter's fillings imports grew fastest by volume

Breaking down imports by sub-product, painters' fillings (32141090) saw volumes surge by 77% (from 23,683t to 41,864t), while mastics and putties (32141010) grew by 42%. Notably, the average import price for painters' fillings actually fell by 29% over the period (from €2,574/t to €1,828/t), suggesting growing competitive pressure from lower-cost suppliers in this sub-segment.

The EU remained a strong net exporter throughout

Despite the rapid growth in imports, the EU's trade balance in CN 321410 remained strongly positive, widening from €1.04 billion to €1.23 billion (+18.1%). Net import reliance deepened from −23.9% to −68.3%, indicating that the EU's position as a net exporter actually strengthened in relative terms—despite the absolute surge in import volumes.

3. Geopolitical Disruptions and the Collapse of the Russia Trade

The period 2022–2023 brought the most dramatic geopolitical shock to the EU's mastics trade: the near-complete evaporation of exports to Russia.

EU exports to Russia collapsed to virtually zero

In 2015, Russia was the EU's second-largest export destination for CN 321410, receiving €179 million worth of goods. By 2025, this figure had fallen to just €63,000—a decline of effectively 100%. The sharpest drop occurred between 2021 and 2023, coinciding with the EU sanctions regime following Russia's invasion of Ukraine.

This constituted the single largest shock event identified in the dataset: a price abnormality score of 131.3 and a year-on-year shift of +1,356% in the residual export value (reflecting the base-effect distortion of near-zero denominators). The Russia export channel had represented 9.3% of total EU export value before its collapse.

Export volatility was concentrated in geopolitically sensitive markets

The coefficient of variation (CV) of export flows reveals that the most volatile destinations were precisely those affected by geopolitical disruption:

By contrast, the EU's traditional European and transatlantic partners—the UK (CV 0.050), Switzerland (CV 0.074), Türkiye (CV 0.141), and the United States (CV 0.165)—exhibited comparatively stable trade flows.

The United States partially filled the gap

The most notable beneficiary of export reorientation was the United States, where EU exports doubled from €115 million to €231 million (+100.4%). Ukraine also grew substantially (+64.2%, from €23 million to €38 million), and Switzerland expanded by 57.3%. Together, these three markets absorbed a significant share of the capacity previously directed at Russia.

On the import side, volatility was highest among smaller suppliers

Import-side volatility was led by Tunisia (CV 1.04), Moldova (CV 1.00), and South Korea (CV 0.88)—all small-volume suppliers with erratic delivery patterns. By contrast, the EU's largest import partners—Switzerland (CV 0.038) and the United States (CV 0.119)—were remarkably stable, reinforcing their role as reliable supply anchors.

Conclusion

The EU's trade in mastics and related products (CN 321410) over 2015–2025 tells a story of structural transformation under geopolitical pressure. The EU consolidated its position as a major net exporter—trade surplus widened to €1.23 billion and net import reliance deepened to −68.3%—but achieved export revenue growth almost entirely through price increases rather than volume expansion. At the same time, imports surged by over 50% in volume, with new suppliers from Southeast Europe and the post-Brexit UK entering or expanding in the EU market, driving import concentration sharply downward.

The most consequential single event was the collapse of exports to Russia, which erased a €179 million annual market in under two years. EU exporters partially redirected flows toward the United States, Switzerland, and Ukraine, but the net effect was a smaller export volume footprint overall. Looking ahead, the combination of rising production capacity (up 66% in volume), increasing export orientation, and diversified import sources suggests an industry adapting to a more volatile and geopolically fragmented trade environment—one where pricing power and supply chain resilience have become the central competitive variables.