Rationel FORMA® Windows
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Application

Suitable for country-style and traditional designs. Consult manufacturer for details.

Description

High-quality laminated flush sash timber windows with a Scandinavian traditional design to complement traditional British architecture.


Traditional windows for the 21st century.


Features and benefits:

  • Brings a softer line to the windows.
  • Angled glazing bead and ovolo-moulded profile.
  • 60 year life expectancy.
  • Over 200 colours available.
  • Range of configurations available.
  • U-value as low as 0.78 W/m²K (triple glazed).
  • CE-marked and resistance tested to wind load, air permeability and watertightness.
  • FSC certified.
  • Secured by Design licence holder.
  • Matching doors also available (specified separately).
  • Composite version also available (FORMAPLUS; specified separately).

General information

Color

Available in a wide range of RAL colours.

-

Finish

Matt

Waterbased TEKNOS 3 steps system, matt finish only.

Note: RAL colours from the Classic K7 range: only gloss 20% available. 

Material

Wood

Glass

Shape

Consult manufacturer.

Rectangular

Size

Consult manufacturer.

Fixed light: 250-3000 x 250-3000 mm. Maximum area 5 m²; Side guided: 450-1000 x 440-1800 mm.

Side hung: 350-950 x 360-1800 mm.

Top guided: 360-1800 x 380-1600 mm.

Top swing: 550-1600 x 550-1600 mm.

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WarrantyDescription

Five years

Uniclass 2015

Pr_30_59_98_96 Wood window unitsPrimary

CAWS

L10/10 Wood windows

L10/210 Wood windows

Specification data - Wood window units Enhanced data

Standard

EN 14351-1:2006 + A2:2016.

Third-party certification

Secured by Design; PAS 24; Q-Mark; FSC; Danish Window Verification (DVV); Danish Indoor Climate label.

Dimensions and configurations

All units are bespoke; please contact manufacturer to discuss and insert requirements.

Note that minimum/ maximum sizes vary depending on operation specified.


Available with or without glazing bars.

As drawing.

As schedule.

Other.

Insert requirements.

Product performance

-

Fire performance

-

Fire egress

Required.

Available with selected ironmongery, consult manufacturer for details. Indicate where these are to be located by schedule or drawing.

Not required.

Weather performance

-

UK exposure category

Generally 1600 Pa to BS 6375-1: 2004.

Refer to manufacturer's literature (DoP) for details.

Air permeability

Generally 600 Pa to BS EN 1026/ BS EN 12207 Class 4.

Refer to manufacturer's literature (DoP) for details.

Watertightness

Generally 600 Pa to BS EN 1027/ BS EN 12208 class 9A.

Refer to manufacturer's literature (DoP) for details.

Resistance to wind load

Generally 1600 Pa to BS EN 12211/ BS EN 12210 class 4C.

Refer to manufacturer's literature (DoP) for details.

Durability

-

Operation and strength characteristics

Operating forces to BS EN 12046-1/ BS 13115: Class 1; EN 1191/ EN 12400 repeated open/close 10000/20000: class 2 or 3.

EN 1191/ EN 12400 repeated open/close 10000/20000: depends on opening function specified.

Loadbearing capacity of safety devices

To EN 14351-1:2006 +A2:2016.

Safety

-

User design standards

Manufacturer's standard.

Consult manufacturer.

Security level

Generally PAS 24:2016 and Secured by Design certified.

Secured by Design certification: Refer to SBD website for details.

Environmental

-

Frame to glazing ratio (maximum)

It may be necessary to influence the view out of, or the amount of daylight admitted by, the window. This may entail defining the glass:frame ratio. Insert, e.g. 20%.

-

Background ventilation

Manufacturer's standard.

  • Externally concealed trickle ventilators will be incorporated into the framing sections to provide a free area of 4000 mm².
  • Equivalent areas will be tested in accordance with BS EN 13141-1: 2004 and will provide 2224 mm² when ventilators are placed in the frame and 3786 mm² when ventilators are placed in the board.
  • Performance data based on test conducted through the window frame and board. 

Acoustic performance rating

NPD.

Thermal

-

Whole window U-value

0.78 W/m²K.

Frame

-

Profile

Traditional, 50 mm.

Wood species

Pine from North-European species Pinus sylvestris.

Scots pine.

Chain of custody

FSC.

Appearance class

Manufacturer's standard.

Finish as delivered

TEKNOS 3 steps system, colour.

Insert colour requirement from RAL Classic K7 range.

Water-based diffusion open timber surface treatment system consisting of multiple layers.


  • Three-layer coating system: 1. Impregnation; 2. Priming; 3. Top coat.
  • The surface treatment system meets EN 113, EN 152 and EN 927.
  • The surface treatment system contains antifungal and anti-rot fungicides.
  • The top coat meets EN 927-6 in terms of UV-protection.
  • The total thickness on visible surfaces is 100μ ±20.
  • For covering colours gloss is 20 ±5.
  • The system meets Danish Indoor Climate certification.

Preservative treatment to wood components

Impregnation and priming.

Ventilator

Manufacturer's standard.

  • Externally concealed trickle ventilators will be incorporated into the framing sections to provide a free area of 4000 mm².
  • Equivalent areas will be tested in accordance with BS EN 13141-1: 2004 and will provide 2224 mm² when ventilators are placed in the frame and 3786 mm² when ventilators are placed in the board.
  • Performance data based on test conducted through the window frame and board. 

Frame horns

No.

Glazing or infill

-

Standard

Relevant parts of BS EN 1279.

Various panel build ups available: consult manufacturer for details.

Requirements

  • BS 952: Glass for Glazing – Part 1: Classification.
  • BS EN 572: Glass in building – Basic soda lime silicate glass products – Part 2: Float glass.
  • BS EN 12150: Glass in building – Thermally toughened soda lime silicate safety glass – Part 1: definition and description.
  • BS EN ISO 12543: Glass in building – Laminated safety glass.
  • BS EN 12600: Specification for Impact Performance.
  • BS EN 1279: Glass in building – Insulating glass units.
  • BS 6262: Code of practice for glazing for buildings.
  • BS 6262: Glazing for buildings – Part 4: Code of practice for safety related to human impact.
  • BS 6206: Specification for impact performance requirements for flat safety glass and safety plastics for use in buildings.
  • BS EN 6180: Barriers in and about buildings – Code of practice.

Triple glazed.

Hardware

Not required.

For Fixed operation.

Factory fitted restrictor.

Locking handle.

Non-locking handle.

Child restrictor handle.

Click vent.

Night vent position lock.

Operation

-

Type

Fixed.

Side hung.

Side guided (for internal clean).

Top guided.

Top swing fully reversible (for internal clean).

Side swing (for internal clean).

Fixing features

Manufacturer's standard.

Consult manufacturer for details.

Environmental information

Country of material origin

Denmark

Literature

Rationel FORMA/FORMAPLUS Catalogue

Rationel FORMA/FORMAPLUS Catalogue

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