RockClose® EN
RockClose® EN is an insulated cavity closer designed to minimise thermal bridging around windows and doors. It also acts to inhibit the passage of smoke and fire within masonry, timber, and steel frame constructions.
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Application(s)
- External Wall
- Steel Frame
- Timber Frame
- Cavity Wall
Product description
RockClose EN consists of a strip of semi-rigid, non-combustible ROCKWOOL insulation bonded to a flexible waterproofing layer for external wall applications requiring a DPC separation layer.
The product has been tested to BS EN 1366-4:2021 to provide up to 60 minutes integrity and insulation depending on the application.
RockClose EN is designed to be installed between the outer masonry leaf and closing inner leaf /substrate prior to fitting the window and door frames. It is suitable for gaps between 20mm and up to 50mm wide.
- Waterproofing layer in accordance with EN 14909 standards
- Thermal conductivity 0.035 W/mK
- Tested in accordance with BS EN 1366-4 (horizontally and vertically)
- Classified in accordance with BS EN 13501-2
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Product properties
| Name | Value | Test standard | Symbol | Unit |
|---|---|---|---|---|
| Declared thermal conductivity | 0.035 | EN 12667 | λD | W/mK |
| Reaction to Fire | NPD | EN 13501-1 | Euroclass | |
| Long term water absorption | NPD | EN 12087 | WL(P) | kg/m² |
| Short term water absorption | NPD | EN 1609 | WS | kg/m² |
| Facing type, side 1 | No Facing |
Product variants
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