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Building Regulations for Deep
Renovations
Seán Armstrong,
Housing/Building Standards Section,
DHPCLGMitchells Crescent Tralee
Contents
• Application of Building Regulations to
existing buildings
• Building Control for existing buildings
• Part D
• Part L
• Major Renovations
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).”
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.
Building Control Regulations for existing buildingsRefer 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 1st 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)
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
– works 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
– works 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.
– works 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
Part D
Part L -Existing Dwellings
TGD L-Section 2 Fabric & Services
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.
•
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/m2K) and roof insulation (0.11 W/m2K) and boiler replacement (91%) to give
117kWh/m2/yr (BER = B3)
• Current NZEB definition for existing dwellings B3/C1 excludes renewables.
Cost Optimal calculations to be repeated in Q1 2018
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
