Rockwool - Rockfall System
Product Description
RockFall
Product
The Rockfall Warm Pitched Roof Insulation system provides an effective means of insulating the roof space at rafter level, and in a Mansard application allows a flat warm roof to be continued through to the pitched roof area. The system is adaptable to almost any pitched roof configuration and has been specifically produced for industrial, commercial and domestic projects.
Warm pitched roofing system for insulation of roof space at rafter level
Advantages
• No ventilation required in roof voids or at eaves, ridges etc.
• A breathable and vapour permeable system
• Reduces risk of condensation on roof timbers
• A uniquely fire safe warm pitched roof system
• Habitable loft makes for economic use of heated building space
• Provides an excellent acoustic barrier to external noise pollution
Rockfall System
The Rockwool Rockfall System has been specifically designed for over rafter insulation to pitched roofs. It consists of a high density Rockwool Overlay board fitted over the rafters and a light density Rockwool Underlay board fitted between the rafters. The Rockwool Rockfall system provides an effective means of providing thermal and acoustic insulation for domestic, commercial and industrial buildings.
Description
Dimensions
The standard board sizes are as follows:
Rockfall Underlay Board: 1140 ¥ 600mm, available in
thicknesses of 100, 120 and 150mm.
Rockfall Overlay Board: 2000 ¥ 600mm, available in
thicknesses of 50, 60, 70 and 80.
Rockfall Overlay Boards are also available with full rebated
edges.
Rockfall boards – average weights per m2
Board Thickness (mm) Rockfall
Overlay Board (kg/m2)
Rockfall Underlay(kg/m2)
50 7.90 -
60 9.00 -
70 10.30 -
80 11.60 -
100 - 4.50
120 - 5.40
150 - 6.75
Performance
Strength
The Rockfall system is capable of resisting the wind and snow loads normally experienced in the United Kingdom. However, the fixing supplier should be consulted for advice (see Page 3 Fixings).
Fire
Rockfall Overlay Boards offer a significant contribution towards improved fire safety. Under the new European Classification for Construction Products Rockfall Overlay and Underlay Boards will achieve a Classification of A1.
If exposed to fire, Rockwool products will not release dense smoke and will withstand temperatures in excess of 1000°C.
The Loss Prevention Council’s advice to Insurers is to regard Rockwool insulation as being non-combustible.
Acoustics
The incorporation of a Rockfall system in a roof can provide a noise reduction of 40 dB or more, depending on the actual construction details.
Product Literature