Certificate No: EW544C

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Certificate No: EW544C Wetheralds Ltd Gable-End Description of Product The Wetheralds Insulated Roof System (Patent applied for) is a solid roof insulation system that replaces existing translucent

1 Certificate No: EW544C Wetheralds Ltd Gable-End Description of Product The Wetheralds Insulated Roof System (Patent applied for) is a solid roof insulation system that replaces existing translucent panes or panels of a domestic conservatory or porch, whilst retaining the existing aluminum profiles, ties, and other structural components of the roof. This roof system achieves a u-value of 0.18W/m2K when installed in compliance with the specification and thermal design. This Registered Solution applies to the roof only. It is designed to fast-track, not remove, the requirement to obtain Building Regulation Approval through LABC. This can only be demonstrated through a Completion Certificate issued following satisfactory inspections made as part of a valid Building Regulation application by Local Authority Building Control teams. Photo/isometric drawing provided by manufacturer Key Factors Assessed Mechanical Resistance & Stability Safety in case of Fire Health, Hygiene and Environmental Safety in Use Energy Economy and heat retention Durability serviceability and identification Validity This certificate was first issued on 15 th April 2015 and is valid until 15 th April Issue Dated 25 th January 2016

2 Approved Document A: The existing structure will need to be assessed to ensure its adequacy for taking any additional loads and may include exploratory investigation of the existing construction. For every project a structural survey will be undertaken looking at the existing conservatory build and a bespoke structural report / design and drawings will be made available and checked by the Partner Authority. The existing mullion / outer frame elements are assumed to be linear components, every site shall have section and material properties checked to ensure that they equal or exceed those assumed values stated in the relevant structural calculation pack. The existing structure will need to be assessed to ensure its adequacy for taking any additional loads and may include exploratory investigation of the existing construction. Approved Document L1B states that the amount of glazing allowed to an extension is 25% of the floor area. In order for this limitation not to apply, there should be: 1. Effective thermal separation must be maintained between the dwelling and former conservatory or porch. 2. Any existing independent temperature and on/off controls to any heating system installed within the former conservatory or porch may be maintained. Refer to LABC guidance on solid roofs to conservatories and porches attached to dwellings The roof specification designed to achieve 0.18 W/m2K comprises; Lightweight Britmat slate, Metro tile or Tapco roof tile nailed to 25x25mm treated tile battens spaced to suit lightweight tile panel. Batten to be sat on BS EN : 2014 breathable felt and 12mm external ply boarding on designed timber rafters physically connected to retained aluminium profile. Minimum of 25mm air space is to be provided above and below the 90mm Actis HYBRIS reflective insulation maintained with additional counterbattens if required. 25mm counterbatten fixed to underside of retained profile with 35mm Hcontrol Hybrid, Multi-Foil Insulation fixed beneath timbers and retained with further 25mm timber batten and 9.5mm plasterboard and skim finish. Proprietary tile ventilation to be provided at eaves and ridge to give cross ventilation above insulation in compliance with Approved Document F. Installation is undertaken by a Wetheralds Installer. A bespoke structural design will be submitted for every roof installation Light fittings should not penetrate the vapour barrier The Registered Detail relates to the reroofing of existing conservatory or porch roofs that satisfy the requirements of Schedule 2, Class 7 to the Building Regulations 2010 (as amended); i.e. It must be at ground level; it must not exceed 30 m2 in floor area; the thermal separation between the building and the conservatory or porch must be maintained; and the building s heating system must not be extended into the conservatory or porch. If the thermal separation is removed then a separate Building Regulation Application needs to be submitted and the amount of glazing to the former conservatory or porch should be reduced to less than 25% of the floor area and the glazing should achieve a U-value 1.6W/m2..K (alternatively heat loss calculations may be used). Ensure existing rainwater goods are retained, if none exist these should be provided. Site specific calculations shall be provided, any deviations on construction shall be referred to their engineer and separate details will be required including verification of adequacy of any retained eaves beam before works are substantially commenced.

LABC consider that, Wetheralds Roof System, will meet the functional requirements of the Building Regulations (listed below) if the criteria detailed in this certificate are met; The Building

Structure Subject to limitations detailed below in Conditions section. Fire Safety The products can contribute to meeting this Requirement.

Conservation of fuel and power The thermal insulation performance of this system should be considered in the context of the contribution made to the overall performance of the roof structure.

3 LABC consider that, Wetheralds Roof 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 AD A AD B AD C AD L1B Materials and workmanship The products are acceptable. Structure Subject to limitations detailed below in Conditions section. Fire Safety The products can contribute to meeting this Requirement. Site preparation and resistance to contaminants and moisture The products can contribute to meeting this Requirement. Conservation of fuel and power The thermal insulation 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 None presently. The Building Regulations 2010 (as amended) Wales None presently. 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

4 LABC Warranty The use of the Wetheralds Roof 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 Sign St C158 Structural Calculations Sign St C226 Structural Calculations twjh rp0002 Condensation Risk Calculations twjh rp0003 Condensation Risk Calculations twjh rp0004 Condensation Risk Calculations twjh rp0004 Condensation Risk Calculations twjh rp0005 Condensation Risk Calculations twjh rp00010 Condensation Risk Calculations twjh rp00011 Condensation Risk Calculations twjh rp00011 Condensation Risk Calculations Wetheralds Roof Type Matrix detailing required timber sizes Typical Scenarios for Tie Removal Appendix B Eaves (Ring) beam remediation detail Surveyor Procedures Installation Procedures Roof Junction Details Roof Section Detail sheet

5 Wetheralds Insulated Conservatory Roof Systems Oak Tree House Alan Farnaby Way Sheriff Hutton York YO60 6PG Telephone: Website:

Certificate No: EW277

Certificate No: EW277 Supalite Tiled Roof Systems Ltd Supalite Roof Description of Product The Supalite Roof is a proprietary solid roof system to replace an existing translucent roof of a domestic conservatory