Every rule your project must meet, found for you.
Search Northern Ireland’s planning and building-control guidance, ask a question in plain English, or generate a project compliance checklist — every answer cited to the source.
Working to a specific project? Generate a compliance checklist →
Answers, with citations
Ask in plain English and get an answer that links to the exact source clause — never an unsourced guess.
Scoped to your council
Overlay a council's local development plan on the Northern Ireland-wide regulations and policy.
Project compliance checklist
Characterise a project and get the requirements that apply, grouped by work area. Try it →
The library
Search the source guidance
7 results · filtered
Service openings in walls and roofs
1.5, 1.6NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
An opening in a wall to accommodate building services, such as a waste pipe or ventilator, should be regarded as part of the wall and assumed to have the same U-value as the wall. An opening in a roo
energydwellingventilationTechnical risks and interrelated requirements
1.7, 1.8NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Building work should satisfy all of the requirements of the Building Regulations, however the requirements of Part C (Site preparation and resistance to contaminants and moisture), Part G (Resistance
energydwellingventilationdrainageMaximum Air Permeability Requirements
2.47NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
The maximum permissible air permeability is 10 m3/(h.m2) at 50 Pa however, it is expected that dwellings will normally have an assessed air permeability of 5 m3/(h.m2) at 50 Pa or less. Where an air p
dwellingenergyventilationLimiting the Effects of Solar Gains - Design Measures
2.52NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Provisions should be made to limit high internal temperatures due to excessive solar gains. This can be achieved by an appropriate combination of window size and orientation, solar protection through
dwellingenergyventilationCommissioning Procedures for Heating and Ventilation Systems
3.41NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Where commissioning is carried out it should be done in accordance with the following procedures – (a) for heating and hot water systems the procedures given in the Domestic Building Services Complian
dwellingenergyventilationTechnical Risks When Modifying Thermal Elements
B3NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
When modifying a thermal element (such as insulating a roof space or filling the cavity in a wall) it is essential to consider the technical risks that may arise. For example, condensation is a major
dwellingenergyventilationprotection-from-fallingReferenced British Standards for Energy Performance
Appendix CNI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
British Standards (BS) BS EN ISO 13370: 2007 Thermal performance of buildings. Heat transfer via the ground. Calculation methods. BS EN ISO 13788: 2002 Hygrothermal performance of building components
dwellingenergyventilation