Deep Retrofit: Irish Housing Building Standards

Housing/Building Standards Section, presentation given by Sean Armstrong, Senior Technical Advisor (Building Standards), Department of Housing, Deep Retrofit conference June 21st 2017

1. Building Regulations for Deep Renovations Se á n Armstrong, Housing/Building Standards Section, DHPCLG Mitchells Crescent Tralee

2. Contents Application of Building Regulations to existing buildings Building Control for existing buildings Part D Part L Major Renovations

3. Application of Building Regulations to existing buildings (Refer to SI 497 of 1997- amended by SI 259 of 2008 and SI 513 of 2010 for legal interpretation) 1. No new or greater contravention Article 9(2) -no works shall be carried out to a building which would cause a new or greater contravention in the building of any provision of Building Regulations . 2. Material alterations, extensions and repair and renewals Art 11 . Building Regulations apply to— (a) all works in connection with the material alteration or extension of a building; and (b) every part of a building affected by works referred to in paragraph (a) but only to the extent of prohibiting any works which would cause a new or greater contravention, in such building, of any provision of these Regulations. (2) For the purposes of this article, “material alteration” means an alteration, where the work or part of the work carried out by itself would be the subject of a requirement of Part A (Structure), B (Fire) or M (Access and Use) of the Second Schedule to these Regulations. (3) These Regulations shall apply to any repair or renewal likely to affect the structural integrity of the building or building element being repaired or renewed . ( 4) Part L of the Second Schedule of these Regulations shall apply to renewal works to existing buildings involving the replacement of external doors, windows and rooflights (5) Part L of the Second Schedule to these Regulations shall not apply to works (including extensions) to an existing building which is a ‘protected structure’ or a ‘proposed protected structure’ within the meaning of the Planning and Development Act 2000 (No. 30 of 2000).”

4. Application of Building Regulations to existing buildings contd. (Refer to SI 497 of 1997- amended by SI 259 of 2008 and SI 513 of 2010 for legal interpretation) 3. Provision of services, fittings and equipment With regard to building services, Article 12 applies to all works in connection with the provision (new work or replacement ) in relation to a building of services, fittings and equipment where Parts G (Hygiene), H (Drainage and Waste Water Disposal) or J (Heat Producing Appliances) of the Second Schedule to the Building Regulations impose a requirement . 4. Material change of use Where a material change of use to a building takes place, Article 13(1) provides that the requirements of Parts A1 and A2 (Structure), Part B (Fire Safety), Part C4 (Site Preparation and Resistance to Moisture), Part F (Ventilation), Part G (Hygiene), Part H (Drainage and Waste Water Disposal), Part J (Heat Producing Appliances), and Part L (Conservation of Fuel and Energy) apply to the building undergoing the change of use .

5. Building Control Regulations for existing buildings Refer to SI 496 of 1997 with amendments for legal interpretation http ://revisedacts.lawreform.ie/eli/1997/act/496/revised/en/html A commencement notice is required for: The erection of a building A material alteration of a building An extension to a building A material change of use of a building Works in connection with the material alteration (excluding minor works) of a shop, office or industrial building where a Fire Safety Certificate is not required A commencement notice is not required for works or a change of use which requires neither planning permission, nor a Fire Safety Certificate Since 1 st Mar 2014 works to existing buildings which require a fire safety certificate are subject to BCAR (assigned certifier, competent builder and submission of certificates of compliance on completion)

6. Building Control for existing buildings contd. Refer to SI 496 of 1997 with amendments for legal interpretation http ://revisedacts.lawreform.ie/eli/1997/act/496/revised/en/html Fire Safety Certificates are required for works in connection with: works in connection with the design and construction of a new building w orks in connection with the material alteration of:  A day centre, A building containing a flat, A hotel, hostel or guest building  , An institutional building  ,A place of assembly  ,A shopping centre w orks in connection with the material alteration of a shop, office or industrial building where additional floor area is being provided within the existing building or where the building is being sub divided into a number of units for separate occupancy.  w orks in connection with the extension of a building by more than 25 square metres  A building as regards which a material change of use takes place to which the requirements of Part B apply A building used as a dwelling other than a flat is exempt from the requirement for Fire Safety Certificates

7. Part D

8. Part L -Existing Dwellings

9. TGD L-Section 2 Fabric & Services

10. EPBD-Major Renovations ‘major renovation’ means the renovation of a building where more than 25 % of the surface of the building envelope undergoes renovation; Art. 7 “when buildings undergo major renovation, the energy performance of the building or the renovated part thereof is upgraded in order to meet minimum energy performance requirements set in accordance with Article 4 (cost optimal level) in so far as this is technically, functionally and economically feasible .” Major Renovations planned to be introduced in Building Regulations for Buildings other than Dwellings in Oct 2017 to apply from Jan 2019. Major Renovations planned to be introduced in Building Regulations for Dwellings in Q1 2018 to apply from Jan 2019.

11. Major Renovations-Part L When calculating the proportion of surface area undergoing renovation the area of the whole building external envelope should be taken into account including i.e. external walls, roofs, floors, windows , doors , and roof windows and lights Works to the surface area of the building include the following: - Cladding the external surface of the element - Drylining the internal surface of an element - Replacing windows - Stripping down the element to expose the basic structural components (brickwork/blockwork, timberframe, steelframe, joists, rafters etc.) and then rebuilding to achieve all the necessary performance requirements. Painting, replastering or rendering are not considered a major renovation for this part of the regulation. Cost Optimal Report (Table A3.4a Semi-D) typical cost optimal level for wall (0.31W/m 2 K) and roof insulation (0.11 W/m 2 K) and boiler replacement (91%) to give 117kWh/m 2 /yr (BER = B3) Current NZEB definition for existing dwellings B3/C1 excludes renewables. Cost Optimal calculations to be repeated in Q1 2018

12. SR 54 Code of Practice for energy efficient retrofit of dwellings Systems Approach Guidance on Regulations and Planning Projects Example Dwellings Guidance on installation of systems Thermal Bridging Details and U Value Tables

13. www.housing.gov.ie email:[email protected]