Version: 23.01
As of: 01/2023
Page
31
from
119
5.4 ASD screws- Mounting on rafter-mounted insulation systems
ASD screws are designed to install roof hooks on roofs with rafter-mounted insulation roofing. The insulation is
designed in such a way that it is installed on the rafters, between the rafter layer and the roof battens. This
insulation layer must not be subjected to static, individual loads, such as roof hooks. The loads from the roof
hooks are diverted through the space between the insulation to the load-bearing rafter design using the ASD
screws.
Information
If the roof structure is too high over the rafters for the ASD scrwes, the roof hooks can also be fixed in the counter battens. By the
customer it must be proofed that the corresponding counter battens are fastend to the substructure so that the additional loads
can be absorbed and the function of the insulation is not impaired. Observe the minimum edge distances and dimensions
according Figure 175.
Select the required screw length according to Figure 34 or using the IBC SOLAR AG PV Manager dimensioning software. It is not
required to drill bores before inserting the screws.
Description
Item number
Roof installation height*
Max. 235 mm
Roof installation height*
Max. 295 mm
ASD flat head screw 8x240-A2
6900300014
X
ASD flat head screw 8x300-A2
6900300015
X
ASD Countersunk screw 8x280-A2
6900300016
X
ASD Countersunk screw 8x340-A2
6900300017
X
Figure 34 Overview of screw lengths
*) fo insu counter integration depth 50 mm
Figure 35 Roof hooks on rafter-mounted insulation systems
Summary of Contents for TopFix 200
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