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Largest Insulation Installation Companies in Norway (2026)

A ranked list of active insulation installation companies in Norway, based on the latest comparable revenue reported in public registry filings.

  • 20 companies
  • Displayed in EUR
  • Updated 2026-08-17
Ranked companies: Insulation Installation Companies ranked by latest reported revenue
Rank Company Industry Latest revenue Profit/loss Employees Year Website
1 KAEFER CONSTRUCTION AS Sign up for full profile Insulation Installation €9,919,474 €451,084 78 2025 Register free to reveal
2 W. GIERTSEN TUNNEL AS Sign up for full profile Insulation Installation €9,654,738 €467,103 55 2024 Register free to reveal
3 MIS - MOSS ISOLASJONSSERVICE AS Sign up for full profile Insulation Installation €7,246,540 €354,019 52 2025 Register free to reveal
4 OSLO ISOLASJONSSERVICE AS Sign up for full profile Insulation Installation €2,322,142 €80,378 16 2024 Register free to reveal
5 TROISMAN AS Sign up for full profile Insulation Installation €1,700,645 €188,247 17 2025 Register free to reveal
6 ISOCO AS Sign up for full profile Insulation Installation €1,643,231 €233,791 10 2025 Register free to reveal
7 W. GIERTSEN AS Sign up for full profile Insulation Installation €1,452,974 €199,106 5 2024 Register free to reveal
8 ISOLERINGSTEKNIKK AS Sign up for full profile Insulation Installation €1,418,775 €37,932 12 2025 Register free to reveal
9 ØYAN & SCHIE FUGING AS Sign up for full profile Insulation Installation €1,418,710 €86,722 22 2025 Register free to reveal
10 ACUSTO AS Sign up for full profile Insulation Installation €1,391,923 -€113,615 8 2025 Register free to reveal
11 KR ISOLERING AS Sign up for full profile Insulation Installation €1,383,523 €115,965 13 2025 Register free to reveal
12 ISOLASJONSKOMPANIET IKAS AS Sign up for full profile Insulation Installation €1,176,703 €100,763 10 2025 Register free to reveal
13 ISOENERGI AS Sign up for full profile Insulation Installation €1,169,780 -€17,188 Not available 2025 Register free to reveal
14 ISOBYGG MIDT-NORGE AS Sign up for full profile Insulation Installation €970,254 €23,772 Not available 2025 Register free to reveal
15 VVS ISOLERING AS Sign up for full profile Insulation Installation €957,820 €87,756 7 2025 Register free to reveal
16 TREFIBERISOLERING SØR AS Sign up for full profile Insulation Installation €955,298 €50,149 7 2024 Register free to reveal
17 WESTBY TEKNISK ISOLERING AS Sign up for full profile Insulation Installation €954,480 €113,148 5 2025 Register free to reveal
18 ARVE RYEN & SØNN ISOLASJONSFIRMA AS Sign up for full profile Insulation Installation €932,548 €173,164 6 2025 Register free to reveal
19 NORD NORSK ISOLERING AS Sign up for full profile Insulation Installation €872,767 €8,314 6 2025 Register free to reveal
20 GRANLI ISOLERING OG BETONGSAGING AS Sign up for full profile Insulation Installation €847,203 -€25,068 14 2024 Register free to reveal

Source currency retained · FX 2026-06-22