ProRox® SL 587
With a dense top layer, ProRox® SL 587 stone wool insulation slab is designed to withstand foot traffic on tank roofs. Pressure resistant and suitable for medium-high temperature applications, it also includes WR-Tech to help prevent CUI.
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Industry and product areas
- Energy & Manufacturing
- Storage tanks
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- WR-Tech - Water Repellency
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About ProRox® SL 587
ProRox® SL 587 is a dual density stone wool insulation slab engineered to perform under pressure. Designed for medium-high temperature industrial applications, it offers a durable solution where both thermal performance and surface strength matter. The slab is manufactured with WR-Tech, ROCKWOOL’s advanced water repellent binder technology, which helps reduce the risk of corrosion under insulation (CUI) and supports long-term system integrity.
- Water repellent to minimise the risk of CUI
- Non-combustible and fire resistant
- Uniform appearance – easy to handle and cut-to-size on site
Application
Engineered for insulating medium-high temperature (10°C to 250°C) industrial systems like tank roofs, where durability against foot traffic and corrosion resistance are critical.
Available dimensions
Certificates
Why ProRox?
Energy‑efficient, fire‑safe insulation
Easy to install, durable and CUI‑mitigating
ProRox is easy to install, dimensionally stable, and sustainable, providing proven energy and CO₂ savings while minimizing the risk of corrosion under insulation. Choose ProRox for reliable, high-performance insulation you can trust.
Product properties
Our products are designed with your specifications in mind:
| Name | Unit | Test standard | Value |
|---|---|---|---|
| Maximum service temperature | °C | EN 14706 | 300 |
| Water absorption | kg/m² | EN 1609 | ≤ 0,2 ≤ 0,2 (after 24 hrs. pre-heating at 250°C) |
| Compressive stress at 10% deformation | kPa | EN 826 | Top layer (17mm): 70. Bottom layer: 50 |
| Nominal density | kg/m3 | EN 1602 | Top layer (17mm): 220. Bottom layer: 110 |
Downloads
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ProRox SL 587
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ProRox SL 587
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ProRox SL 587
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ProRox SL 587
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ProRox SL 587
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Online tools
We provide a wide range of free tools to support your work - from online calculators for energy and heat‑loss assessments to a comprehensive online pricing tool Rockprice. Whether you are just starting your project or require technical guidance along the way, we are here to assist you at every stage.
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