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Standing Seam Roof System - PREFALZ® - Coil coated aluminum standing seam

Verified by manufacturer 2 months ago

Vented Roof

PREFA UK Ltd Variant:
Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type

  • EPD

    EPD

    Certificate type

PREFALZ aluminium standing seam is available in 20 different colours, including a range of P.10 finishes. It is lightweight, malleable, corrosion resistant, rust proof and A1 non combustible.

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+44 20 7795 8124 Website

Application

500 and 650 mm width coils are applicable for use in standing seam roofing.


1000 mm coil widths are suitable for use as flashing strips.

Description

Aluminium standing seam roof system.


Prefalz® is highly malleable and therefore easy to shape. This results in countless individual design possibilities.


Using Prefalz® includes all the advantages of aluminium, combined with a material guarantee of 40-years.


Features and benefits:

  • Available in a range of 19 standard colours.
  • P.10 finishes with up-to 40 year colour guarantee.
  • Available with smooth or stucco surface.
  • Comprehensive PREFA system accessories available.
  • Versatile use – from arched roofs to complex roof extensions, domes or large-scale roofs.
  • Long service life – non-corrosive.
  • Does not rust.
  • Low weight sheet strip: 1.89 kg/m². Approximately 2.3 kg/m² roof surface with Prefalz® 500, and 2.2 kg/m² roof surface with Prefalz® 650.
  • Fully recyclable.
  • Non-combustible (A1).
  • Highly malleable, even in sub-zero temperatures (allows for expansion).
  • Aluminium alloy mechanical properties and coating are coordinated with the folding technology.
  • No heavy metal erosion.
  • Visible side: coil-coated aluminium (two layers including a primer and colour finish).
  • Underside : protective paint on reverse.
  • Suitable for coastal environment.


PREFA PREFALZ® – COLOUR RANGE & NEAREST RAL

 

01. P.10 BROWN

Nearest RAL 7013

 

02. P.10 ANTHRACITE

Nearest RAL 7016

 

03. P.10 BLACK

Nearest RAL 9005

 

04. P.10 BRICK RED

Nearest RAL 8004

 

05. P.10 OXIDE RED

Nearest RAL 3009

 

06.P.10 MOSS GREEN

Nearest RAL 6005

 

07.P.10 LIGHT GREY

Nearest RAL 7005

 

08. P.10 ZINC GREY

Nearest RAL 7030

 

10. P.10 PREFA WHITE

Nearest RAL 9002

 

11. P.10 NUT BROWN

Nearest RAL 8019

 

12. METALLIC SILVER

Nearest RAL 9006

 

13.PLAIN ALUMINIUM

-

 

17. P.10 PURE WHITE

Nearest RAL 9010

 

19.P.10 DARK GREY

Nearest RAL 7043

 

23. BLACK GREY

Nearest RAL 7022

 

43. P.10 STONE GREY

Nearest RAL 7031

 

45. BRONZE

Nearest RAL 7048

 

46.P.10 PATINA GREEN

Nearest RAL 6027

 

47. PATINA GREY

Nearest RAL 7042


General information

Color

Black

Brown

Bronze

Green

Grey

Show more

Finish

Coated

Material

Aluminium

Shape

Other

Length

Bespoke

Width

0.7 mm

Height

500 mm

650 mm

Warranty description

40 year

Guidance for specification option:

40 year for material, up to 40 year for colour.

Uniclass

Ss_30_40_50_10 Aluminium sheet fully supported roof covering systemsPrimary

CAWS

H72/110 Aluminium sheet fully supported roof covering

Specification data - Aluminium sheet fully supported roof covering systems

Membrane

Vapour permeable sheets in accordance with BS EN 13859-1.

Insulation

Guidance for specification option:

Please insert requirement.


NOTE: An aluminium standing seam roof does not have any specific requirement with regard to the insulation, unless it is used as the substrate for the standing seam in a warm roof build-up. In this instance, the insulation must be dense in quality and supportive of foot traffic without denting, with a minimum compression strength of 50 kpa (0.5 kg/cm²) at a maximum of 10% deformation and remain dimensionally stable at 100°C.

Substrate

24 mm open gap softwood boards.

Guidance for specification option:

24 mm open gap softwood boards, according to EN 12775-2. In widths of 100 mm to 125 mm and laid with 3-5 mm gaps between the boards parallel to the eaves, with fastener heads driven just below surface. 50 mm minimum vented cavity, 25 mm open air inlet at the eave and 25 mm open air outlet at the ridge. 50 mm cavity created with a batten. Standing seam fixings, and positioning, as per PREFA installation instructions and FTMRC Guidelines. Pitches from 3° to the vertical.

 

 System build-up:

 

  • Interior finish.
  • Vapour control layer.
  • Insulation.
  • Membrane. Vapour permeable sheet in accordance with BS EN 13859 -1.
  • 50 mm ventilated air space (minimum).
  • Rafter.
  • Batten.
  • Open-gap timber boarding.
  • PREFA PREFALZ Standing Seam.

 

18 mm WBP external grade plywood.

Guidance for specification option:

18 mm WBP external grade plywood - EN 314 bond class 2 and EN 636-2 timber performance. A 50 mm minimum vented cavity must be created under the plywood using battens. The cavity must have a minimum 25 mm open air inlet at the eaves, and a minimum 25 mm open air out let at the ridge. Standing seam fixings, and positioning, as per PREFA installation instructions and FTMRC Guidelines. Pitches from 3° to the vertical.

 

System build-up:

 

  • Interior finish.
  • Vapour control layer.
  • Insulation.
  • Membrane. Vapour permeable sheet in accordance with BS EN 13859 -1.
  • 50 mm ventilated air space (minimum).
  • Rafter.
  • Batten.
  • Plywood.
  • Membrane. Vapour permeable sheet in accordance with BS EN 13859-1.
  • PREFA PREFALZ standing seam.


Ventilated galvanized steel metal deck.

Guidance for specification option:

0.9 mm thickness. To give a minimum clip pull-out value of 400 N, installed 'façade side outwards' to give maximum support to the standing seam panels, parallel to eaves, all ends supported. A 50 mm minimum vented cavity must be created under metal deck, using a bracket and rail system. The cavity must have a minimum 25 mm open air inlet at the eave and a minimum 25 mm open air out let at the ridge. Standing seam fixings, and positioning, as per PREFA installation instructions and FTMRC Guidelines  Pitches from 3° to the vertical.

Cavity barriers

Guidance for specification option:

To architects specification. Insert accordingly.

Sheet underlay

-

Material

Aluminium alloy.

Eave details

-

Form

Guidance for specification option:

To PREFA installation guidelines and detailing.

Verge details

-

Form

Guidance for specification option:

To PREFA installation guidelines and detailing.

Material

Aluminium alloy.

Fixings

-

Joints

PREFA preformed fixed and sliding clips.

Guidance for specification option:

According to project requirements.

Ridge and hip details

-

Form

Guidance for specification option:

To PREFA installation guidelines and detailing.

Abutments

-

Form

Guidance for specification option:

To PREFA installation guidelines and detailing.

System accessories

Guidance for specification option:

An extensive range of accessories is available; consult literature for details and insert requirements.

Colour/ Finish

01 Brown P.10.

Guidance for specification option:

Similar to RAL 7013.

02 Anthracite P.10.

Guidance for specification option:

Similar to RAL 7016.

03 Black P.10.

Guidance for specification option:

Similar to RAL 9005.

04 Brick Red P.10.

Guidance for specification option:

Similar to RAL 8004

05 Oxide Red P.10.

Guidance for specification option:

Similar to RAL 3009.

Show more

Width

500 mm.

650 mm.

Thickness

0.7 mm.

Roof pitch

Guidance for specification option:

The manufacturer recommends a minimum substructure roof pitch of >7° (13%). Roof pitch from 3° is possible. From 3–7° it is required to seal the seams (using PREFA Sealing Gel). The position of clips will be according to roof pitch – consult PREFA planning guide.

Weight

1.89 kg/m².

Guidance for specification option:

Average consumption of approximately 2.3 kg/m² (500 mm-wide coils) or 2.2 kg/m² (650 mm-wide coils).

Installation

Guidance for specification option:

On fully boarded substrate (thickness in accordance with national guidelines or regulations; PREFA recommends 24 mm). A suitable separation layer is required. Observe national standards and specialist guidelines (such as the FTMRC Guide to Good Practice in Metal Roofing).

FireRating

A1.

Guidance for specification option:

Non-combustible.

Surface finish

Stucco.

Guidance for specification option:

As standard.

Smooth.

Guidance for specification option:

Available on request.

Rear panel

Protective paint.

Third-party certification

QA Certificate.

Sustainability data

Contains Red List materials

No

Country of material origin

Austria

Country of product manufacture

Austria

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

6.39 kg CO₂ eq/kg

Manufacturer guidance

EPD available upon request

Recyclability

100

Manufacturer guidance

Fully Recycable

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

87 %

Manufacturer guidance

Information available upon request

EPD

Third party certifications

QA Certificate

QA Certificate

CE: Marked

EPD

EPD

Environmental Performance Declaration

Literature

PREFA PREFALZ Standing Seam Roof

PREFA PREFALZ Standing Seam Roof

PREFALZ. Declaration of Performance.

PREFALZ. Declaration of Performance.

PREFALZ. Standard Roof Details

PREFALZ. Standard Roof Details

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