Photo/isometric drawing

provided by manufacturer

Forticrete - Low Pitch Roof Window System

Description of Product

The Forticrete Low Pitch Roof Window System

is a two-piece tray which sits between the

roofing underlay (Fakro Eurotop N35) and tile

battens as low as 10 degrees. The tray system,

roof window (Fakro FTP-V U3 Centre Pivot

Window – BBA Agrément Certificate 02/3944)

and flashing kits integrate to form a barrier

against moisture with any precipitation which

has found a way under the tile covering

(Forticrete Centurion) dispersed into the

guttering system in a controlled manner.

Supporting Declaration of Performance – CE

A01/CPR/14351/15.

Key Factors Assessed

Health, hygiene and environmental

Safety in Use

Energy economy and heat retention

Validity

This certificate was first issued on 10th July 2018 and is valid until 10th July 2022

Issue Dated 11th September 2019

Certificate No: EW618

This is an assessment of the Forticrete Low Pitch Roof Window System. The system differs from conventional roof windows

and flashing kits in so much that it can, when fitted in conjunction with the Forticrete Centurion tile, be laid as low as 10

degrees.

In principle, conventional roof windows and flashing kits work by discharging precipitation up and over the face of the tile

covering. However, at lower pitches, below 15 degrees, precipitation does not run off so quickly which can lead to pooling

and a greater risk of moisture ingress. The Forticrete Low Pitch Roof Window System solves this using a patented two-piece

drainage flow system which collects any water which runs under the tile covering and disperses it across the trays, over the

fascia and into the gutter system in a controlled manner.

Forticrete Low Pitch Roof Window System specification:

• Must be installed with Forticrete Centurion tiles (CE Certified)

• Cannot be installed lower than 10 degrees

• Can be installed up to 15 degrees

• Tiles and ventilation products to be fitted in accordance with BS:5534, BS:8000 and BS:5250

• Minimum rafter length of 2.5m

• Maximum rafter length of 5m

• Must be installed with Fakro Eurotop N35 underlay (or similar) in accordance with BS:5534

• Must be installed with Fakro FTP-V U3 Centre Pivot Window (550mm x 980mm) and flashing kits (BBA Agrément

Certificate 02/3944)

• Single storey use only

• Sheltered locations only i.e. not recommend in exposed areas with higher wind speeds

The system assumes an intended working life of at least 10 years, provided that the conditions for the packaging, transport,

storage and installation as well as appropriate use, maintenance and repair are met. Guarantee supplied by Forticrete. No application has been made to seek approval for new dwelling warranty and the product is designed principally for

residential extension.

The indications given as to the working life cannot be interpreted as a guarantee given by the manufacturer but should only

be regarded as a means for choosing the appropriate products in relation to the expected economically reasonable working

life of the works.

The manufacturer shall exercise permanent internal control of production. All the elements, requirements and provisions

adopted by the manufacturer shall be documented in a systematic manner in the form of written policies and procedures,

including records of results performed.

The manufacturer may only use components stated in the technical data sheets.

The system has no specific requirement to achieve a U-value equal or less than 0.18 W/(m².K)² to comply with the Building

Regulations (insulation at rafter level). However, its thermal performance should be considered in the context of the

contribution made to the overall performance of the roof structure.

 

Site specific assessment should be undertaken to determine if the location is sheltered (including regional wind speed,

exposure zone and building height).

Protection must be provided when installing the system in rain or other inclement weather.

All supporting Fakro products, underlay and centre pivot window are CE certified under declaration of performance

certificate CE A01/CPR/14351/15. The windows are classed as non-combustible and AA rated (as stated in Section 11 of the

BBA certificate) and the pivot range of roof windows are BBA certified (certificate 02/3944).

LABC consider that, Forticrete Low Pitch Roof Window System will meet the functional requirements of

the Building Regulations (listed below) if the criteria detailed in this certificate are met;

The Building Regulations 2010 (as amended) England & Wales

Regulation 7 Materials and workmanship

Note: The system is acceptable.

AD C Site preparation and resistance to contaminants and moisture

Note: Subject to limitations detailed in Conditions of Certificate.

AD L1A and L1B Conservation of fuel and power

Note: The thermal performance of this system should be considered in the context

of the contribution made to the overall performance of the roof structure.

The Building Regulations 2010 (as amended) England

AD L1A and L1B Conservation of fuel and power

Note: The thermal performance of this system should be considered in the context of

the contribution made to the overall performance of the roof structure.

The Building Regulations 2010 (as amended) Wales

AD L1A and L1B Conservation of fuel and power

Note: The thermal performance of this system should be considered in the context of

the contribution made to the overall performance of the roof structure.

The Building (Scotland) Regulations 2004 (as amended)

If you would like to discuss a specific use of the product in Scotland it will require an additional

assessment under the Scottish Building Regulations and accordingly you should contact the LABSS

STAS Administrator at www.labss.org

LABC Warranty

The use of the Forticrete Low Pitch Roof Window System has not been assessed to meet the

requirements of the LABC Warranty Technical Manual. If you would like to discuss a specific use please

make an enquiry to technical.services@labcwarranty.co.uk

British Standard BS:5250 2011

British Standard BS:5534 2014

British Standard BS:8000 2014

Patent Pending (UK) GB1121030.8

Patent Pending (UK) GB1322726.9

Patent Cooperation Treaty (International) GB2013/053085

Forticrete Low Pitch Roof Window System Issue July 2014 (47/NF2)

Forticrete Low Pitch Roof Window Solution (System Installation Guide) Issue September 2014 (47/NF2)

Forticrete Low Pitch Roof Window System Specification) Issue April 2017

Fakro FTP-V U3 Centre Pivot Window – BBA Agrément Certificate 02/3944

Supporting Declaration of Performance – CE A01/CPR/14351/15

Forticrete Limited

Boss Avenue

Grovebury Road

Leighton Buzzard

Bedfordshire

LU7 4SD

Tel: 01525 244 900

Email: businessdevelopment@forticrete.com

Web: www.forticrete.co.uk