Roof safety

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safety tread
Walkway support on one mount
Walkway support on two mounts
roof anchor hook
Roof anchor hooks with mounts

The safety tread is a construction product made of aluminium for accessing roofs, is firmly connected to the load-bearing structure of pitched roofs and may be used for the purpose of inspection, maintenance and repair of systems above the roof surfaces. The safety tread corresponds to EN 516, class K1 and may not be used as an anchorage point for personal protective equipment. Suitable for roof pitches of 12-60°.

safety tread
Substrate	The basic requirements are a PREFA roof system laid in accordance with PREFA installation guidelines and a statically stable, full-surface sub-structure framework (full formwork at least 24 mm thick). The rafter distance may not exceed 1,000 mm.
Material specifications	Safety tread Aluminium AlMg1 H24, s = 5 mm Surface seal: Silicone panels Foot parts: EN AW 2007 AlcuPbMgMn Covering cap: PREFALZ colour aluminium coil Fixing screws/nuts Stainless steel, quality A2

Safety instructions

Before use, the entire roof access system must be visually inspected for obvious defects (e.g. loose screw connections, deformations, wear and tear, defective roof covering). If there are doubts about the safe function of the roof access system, this must be checked by a competent person (written documentation).
The system may only be assembled or used by persons who are familiar with this instruction manual, as well as with the locally applicable regulations.
If anything is unclear during assembly, it is imperative to contact the manufacturer.
The safety tread was developed for roof access and may not be used for any other purposes. Never hang loads on the safety tread or use it as an anchorage point for personal protective equipment.
Health restrictions (e.g. heart and circulatory problems, medication, alcohol) can affect the safety of the user when working at height.
Safety systems may no longer be used at wind speeds that exceed the usual level.
No changes may be made to the single step.

Note

With all PREFA roof systems, it may be necessary to fit a base plate (e.g. if there is a rebate or crest in the installation area
). Do not place and fasten safety tread on the fold or crest of the PREFA roof covering.
CAUTION: Observe installation areas of the PREFA roof systems.

1 Single step pre-assembled
2 2 covers for foot parts
3 2 foot parts incl. surface seal

4 2 hexagon head screws M12 × 16 mm
5 2 13.0 washers
6 12 countersunk screws 6.0 × 40/24

1 Open-end wrench SW10
2 Torque wrench, SW19 nut
3 Drill with Torx TX25

4 Spirit level
5 Tape measure
6 Pencil

Pre-assemble the foot parts on the safety tread and then remove the covering film from both foot parts (Fig. 1).
Position the safety tread at the desired point in the direction of the rafters and fasten the foot sections to the substructure with the supplied countersunk screws (Fig. 2).
Unscrew the safety tread from the foot parts and fasten the foot parts to the substructure with the rest of the countersunk screws (Fig. 3).
Position the cover caps on the foot parts (Fig. 4).

Use a torque wrench to tightly screw the single step to the foot parts using the supplied hexagon head screws and washers. Tightening torque of 35 Nm (Fig. 5).
Loosen the screws and self-locking nuts to adjust the incline and adjust the tread using a spirit level. Adjust the tread so that it does not deviate more than ±3° from the horizontal (Fig. 6).
Screw in the side screws again and fix on the incline (horizontal ±3°) using a self-locking nut (Fig. 7).
Complete system with several single steps for accessing the roof. The distances between the individual steps are to be selected in such a way that they can be walked on without any problems (Fig. 8).

The walkway support system may only be used for walking on roofs and not as an anchorage point for personal protective equipment or for carrying loads. The walkway support conforms to EN 516, class K1, type A. Suitable for roof inclines of 12-55°.

Substrate	The basic requirements are a PREFA roof system laid on full formwork in accordance with the valid standards/ professional rules with at least 24 mm and a statically stable sub-structure framework. The rafter distance may not exceed 1,000 mm. The walkway supports are to be mounted on the formwork with the supplied foot parts.
Material specifications	Material of walkway support Walkway support: Galvanised steel and powder-coated fixing screws/nuts: V2A Material of walkway Walkway: Galvanised steel and powder-coated, fixing screws: M6 x 60/35 round-head screws, quality V2A with hammer head nut and PE washers

Safety instructions

Walkway supports on foot parts and the walkway may only be mounted by professional/competent persons who are familiar with the roof access system according to the state of the art technology.
The system may only be assembled or used by persons who are familiar with this instruction manual, as well as with the locally applicable regulations.
Health restrictions (e.g. heart and circulatory problems, medication, alcohol) can affect the safety of the user when working at height.
If anything is unclear during assembly, it is imperative to contact the manufacturer.
Before use, the entire roof access system must be visually inspected for obvious defects (e.g. loose screw connections, deformations, wear and tear, corrosion, defective roof connections, etc.).
If there are doubts about the safe function of the roof access system, this must be checked by a competent person (written documentation).
The walkway support system was developed for roof access and may not be used for any other purposes.
Never hang loads on the walkway support system or use it as an anchorage point for personal protective equipment.
No changes may be made to the walkway support.

Note

With all PREFA roof systems, it may be necessary to fit a base plate (e.g. if there is a rebate or crest in the installation area). Do not place and fasten walkway support on the fold or crest of the PREFA roof covering.

CAUTION: Observe installation areas of the PREFA roof systems.

1 Connector for walkway incl. fasteners
2 Walkway support
3 Foot part with surface seal
4 Fixing screws

5 Screws M6 × 60
6 Walkway
7 Base plate (if applicable)

1 Open-end wrench SW10
2 Torque wrench, SW19 nut
3 Drill with Torx TX25
4 Spirit level

5 Tape measure
6 Chalk line
7 Pencil

Mark the upper edge of the foot part. Hereby note the assembly areas of the PREFA products. Ideally, a distance of 30 mm is recommended from the lower edge of the fold to the upper edge of the foot part. This distance is within the permitted installation range and ensures
that the PREFA roof covering can continue to be covered or, for example, the subsequent replacement of PREFA roof systems (Fig. 1).
Remove the cover film from the foot section and stick it to the previously marked area. Unscrew all six holes of the foot part for mounting on formwork with the supplied 6.0 × 40 mm countersunk screws (Fig. 2).

Position the cover cap on the foot part (Fig. 3).
Use a torque wrench to tightly screw the walkway support to the foot part using the supplied hexagon head screws and washers. Observe a tightening torque of 35 Nm (Fig. 4).

Align the bridge according to the roof pitch (12–55°) and tighten the screws with the 20 Nm torque wrench (Fig. 5).
Fasten walkways on at least two supports with the enclosed 4 special M6 × 60 mm screws, hammer head nuts and PE washers.
The max. distance between supports is 900 mm, the max. overhang laterally over the supports is max. 100 mm (Fig. 6).

Connect element parts of the walkway connector with the spring. Slide the walkway connector into the walkway so that the spring snaps into the gap in the joint between the two walkways (Fig. 7).
A joined field (1) must always be followed by an unjoined field (2) (Fig. 8).

The walkway support system may only be used for walking on roofs and not as an anchorage point for personal protective equipment or for carrying loads. The walkway support conforms to EN 516, class K1, type B. Suitable for roof inclines of 12-55°.

Substrate	The basic requirements are a PREFA roof system laid on full formwork in accordance with the valid standards/ professional rules with at least 24 mm and a statically stable sub-structure framework. The rafter distance may not exceed 1,000 mm. The walkway supports are to be mounted on the formwork with the supplied foot parts.
Material specifications	Material of walkway support Walkway support: Galvanised steel and powder-coated, fixing screws/nuts: V2A Material of walkway Walkway: Galvanised steel and powder-coated, fixing screws: M6 x 60/35 round-head screws, quality V2A with hammer head nut and PE washers

Safety instructions

The walkway support on foot parts and the walkway may only be mounted by professional/competent persons who are familiar with the roof access system according to the state of the art technology.
The system may only be assembled or used by persons who are familiar with this instruction manual, as well as with the locally applicable regulations.
Health restrictions (e.g. heart and circulatory problems, medication, alcohol) can affect the safety of the user when working at height.
If anything is unclear during assembly, it is imperative to contact the manufacturer.
Before use, the entire roof access system must be visually inspected for obvious defects (e.g. loose screw connections, deformations, wear and tear, corrosion, defective roof connections, etc.).
If there are doubts about the safe function of the roof access system, this must be checked by a competent person (written documentation).
The walkway support system was developed for roof access and may not be used for any other purposes.
Never hang loads on the walkway support system or use it as an anchorage point for personal protective equipment.
No changes may be made to the walkway support.

Note

With all PREFA roof systems, it may be necessary to fit a base plate (e.g. if there is a rebate or crest in the installation area). Do not place and fasten walkway support on the fold or crest of the PREFA roof covering.

CAUTION: Observe installation areas of the PREFA roof systems.

1 Connector for walkway incl. fasteners
2 Walkway support
3 Foot part with surface seal
4 Fixing screws 6 × 40

5 Screws M6 × 60
6 Walkway
7 Base plate (if applicable)

1 Open-end wrench SW10
2 Torque wrench, SW19 nut
3 Drill with Torx TX25
4 Spirit level

5 Tape measure
6 Chalk line
7 Pencil

Mark the upper edge of the foot part. Hereby note the assembly areas of the PREFA products. Ideally, a distance of 30 mm is recommended from the lower edge of the fold to the upper edge of the foot part. This distance is within the permitted installation range and ensures that the PREFA roof covering can continue to be covered or, for example, the subsequent replacement of PREFA roof systems (Fig. 1).
Remove the cover film from the foot section and stick it to the previously marked area. Unscrew all six holes of the foot part for mounting on formwork with the supplied 6.0 × 40 mm countersunk screws (Fig. 2).

Mark the distance of 90 mm between the foot parts. The second foot part must be aligned with the upper foot part in the direction of the rafters (Fig. 3).
Remove the cover film from the foot section and stick it to the previously marked area. Unscrew all six holes of the foot part for mounting on formwork with the supplied 6.0 × 40 mm countersunk screws (Fig. 4).

Position the cover caps on the foot parts (Fig. 5).
Use a torque wrench to tightly screw the walkway support to the foot parts using the supplied hexagon head screws and washers. Observe a tightening torque of 35 Nm (Fig. 6).

Align the bridge according to the roof pitch (12–55°) and tighten it with the 20 Nm torque wrench (Fig. 7).
Fasten walkways on at least two supports with the enclosed 4 special M6 × 60 mm screws, hammer head nuts and PE washers.
The max. distance between supports is 900 mm, the max. overhang laterally over the supports is max. 100 mm (Fig. 8).

Push the element parts of the walkway connector into the walkway. Fasten the elements laterally with the screws supplied (Fig. 9).
A joined field (1) must always be followed by an unjoined filed (2) (Fig. 10).

according to EN 517 B

Safety roof hooks on base plate

As an anchorage point on a pitched roof for a single person with protective equipment and energy absorbers according to EN 355. Suitable for hanging roofer’s ladders and for fastening roofer’s chairs. Never hang undefined loads on the safety system. The safety roof hooks were checked for roof installation in accordance with EN 517:2006, type B (-y) in all load directions (also in –y- direction = ridge direction). Do not forget the photo documentation of the professional attachment to the structure.

Substrate	The basic requirements are a PREFA roof system laid on full formwork in accordance with the valid standards/ professional rules with at least 24 mm and a statically stable sub-structure framework. Smallest rafter cross-section: 80 × 100 mm.
Material	Galvanised steel and powder-coated safety roof hooks. Covering cap and strips: Aluminium 3005 (AlMn1Mg0.5) in accordance with EN 573-3, fixing screws: HBS Komprex S-20 8 ×220/100 + R T/40 ZnNi C4 , HBS Komprex S-20 8 ×120/80 + R T/40 ZnNi C4

Safety instructions

Safety roof hooks may only be mounted by professional/competent persons who are familiar with the roof safety system according to the current state of the art technology.
Roof anchor hooks may only be assembled or used by persons who are familiar with this instruction manual - as well as with the locally applicable safety regulations - and who are trained in how to use PPE (personal protective equipment).
The anchorage point should be planned, assembled and used in such a way that, with professional use of the PPE, it is not possible to fall over the edge. The respective accident prevention regulations of the respective country are to be observed.
The anchorage point on the roof is intended for loading in all directions parallel to the mounting surface.
When accessing the roof safety system, the positions of the anchorage devices must be documented with plans (e.g. sketch of the top view of the roof).
Before use, the entire safety system must be visually inspected for obvious defects (e.g. loose screw connections, deformations, wear and tear, corrosion, defective roof connections, etc.). If there are doubts about the safe function of the safety system, this must be checked by an expert (written documentation).
The entire safety device must be checked at least once a year by a competent person.
After a fall, the entire safety system must be withdrawn from further use and checked by an expert.
Where necessary, the safety roof hooks must be replaced. No changes may be made to the approved anchorage device.

Note

PREFA installation guidelines, applicable standards and specialist rules must be observed. The safety roof hooks are to be mounted in the middle of the rafters with the screws supplied.
The depth of penetration of the original fixing screws into the load-bearing substructure (rafters) must be at least 80 mm. For rhomboid roof tiles 29 × 29 and 44 × 44 and for shingles, the installation of a base plate is required.
For roof tiles, R.16 roof tiles and FX.12 roof panels, it may be necessary to fit a base plate (e.g. if there is a rebate or crest in the area of the rafters).
CAUTION: Observe installation areas of the PREFA roof systems.

1 Roof anchor hooks EN 517 B
2 Cover cap
3 Universal wooden screw, 8 × 220 mm (double-shell roof structure) or 8 × 120 mm (single-shell roof structure)

4 Possible base plate (always required for PREFA rhomboid roof tiles and roof shingles)
5 Folding strips

Mark the rafters and the upper edge of the roof hook (25–30 mm) (Fig. 1).
Place the roof hook in the middle of the rafter and mark it on the roof surface by hammering in the tip (Fig. 2).

Mark the screw holes on the PREFA roof covering (Fig. 3).
Pre-drill the screw holes with Ø 5 mm (Fig. 4).

Apply sealant around the drill holes and the impact point (Fig. 5).
Set screws, underlay 0.7 × 22 × 250 mm locking strips and tighten. The depth of penetration of the original fixing screws into the load-bearing substructure (rafters) must be at least 80 mm (Fig. 6).

Slide the cover cap into the upper hook fold, fold over and nail (Fig. 7).
Fasten cover cap by folding over the closure strip (Fig. 8).

Safety roof hooks installed on base plate.

As an anchorage point on a pitched roof for a single person with protective equipment and energy absorbers according to EN 355. Suitable for hanging roofer’s ladders and for fastening roofer’s chairs. Do not forget the photo documentation of the professional attachment to the structure.

Substrate	The basic requirements for a professional installation are a PREFA roof system laid in accordance with the valid standards/professional rules and a statically stable timber sub-structure framework (rafters at least 8/8 cm with at least 24 mm full formwork, at least 10 × 14 cm for above-rafter insulation).
Material	Roof anchor hook Stainless steel 1.4301 Foot parts: EN AW 2007 AlCuPbMgMn Surface seal: Silicone panels Covering cap: PREFALZ colour aluminium coil Fixing screws: HBS Komprex S-20 8 ×220/100 + R T/40 ZnNi C4, HBS Komprex S-20 8 ×120/80 + R T/40 ZnNi C4 Fixing screws/nuts and washers: Stainless steel, quality 1.4301

Safety instructions

Before use, the entire safety system must be visually inspected for obvious defects (e.g. loose screw connections, deformations, wear and tear, defective roof covering). If there are doubts about the safe function of the roof access system, this must be checked by a competent person (written documentation).
The system may only be assembled or used by persons who are familiar with this instruction manual, as well as with the locally applicable regulations, and who are trained in how to use PPE (personal protective equipment).
Safety roof hooks on foot parts may only be mounted by professional/competent persons who are familiar with the roof access system according to the current state of the art technology.
The safety system should be planned, assembled and used in such a way that, with professional use of the PPE, it is not possible to fall over the edge. The respective accident prevention regulations of the respective country are to be observed.
When accessing the roof safety system, the positions of the roof anchor hooks must be documented with plans (e.g. sketch of the top view of the roof).
The entire safety device must be checked at least once a year by a competent person.
After a fall, the entire safety system must be withdrawn from further use and checked by an expert. Where necessary, the safety roof hooks must be replaced.
No changes may be made to the safety roof hooks.
Stainless steel must not come into contact with grinding dust or steel tools. This leads to the formation of corrosion.

Note

With all PREFA roof systems, it may be necessary to fit a base plate (e.g. if there is a rebate or crest in the area of the rafters). Do not place and fasten safety roof hooks on foot sections on the fold or crest of the PREFA roof covering.
CAUTION: Observe installation areas of the PREFA roof systems.

Mark the centre of the rafter. The upper foot part (outer edge) should have a distance of at least 10 mm to the overlying fold. Observe distance of 84.5 mm (measured on the inside) between the two foot parts. For attachment to the rafter, the drill holes (Ø 8.5 mm) must lie on the axis of the snow rake hook (= course of the rafter) - Fixing screws in one axis with the rafter. Remove rear protective film on the foot parts, position and stick on (Fig. 1 and 2).

Note

Do not place and fasten foot section on the fold or crest of the PREFA roof covering. It may be necessary to fit a base plate (e.g. if there is a rebate or crest in the area of the rafters).

Pre-drill the screw holes in the sub-structure framework with a Ø 4.1 mm drill, drilling depth approx. 50 mm (Fig. 3).
Screw the foot parts with 2 Fixing screws, each 8 x 220 mm (with double-shell construction) or 8 x 120 mm (with single-shell construction), on the rafter until the surface seal is pressed onto the roof covering/substructure. When processed correctly, the surface seal bulges slightly outwards (attachment for drill: Torx Tx40) (Fig. 4).

Attaching (placing) the cover caps to the foot parts (Fig. 5).
Mounting of the safety roof hooks with both hexagon head screws (M12) to the foot parts (SW19; torque: 35 Nm) (Fig. 6).

Roof safety

safety tread

Required material

Required tool

Installation

Walkway support on one mount

Required material

Required tool

Installation

Walkway support on two mounts

Required material

Required tool

Installation

roof anchor hook

Required material

Installation

Roof anchor hooks with mounts

Installation