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NI-wide·Technical Booklet K Ventilation

The guidance contained in this Technical Booklet relates only to the requirements of regulations 65, 66 and 68. The work will also have to comply with all other relevant requirements of the Building R

NI-wide·Technical Booklet K Ventilation

The Air Quality Standards Regulations (Northern Ireland) 2010 transpose EU Directive 2008/50/EC on ambient air quality and cleaner air for Europe and include certain provisions of Directive 2004/107/E

NI-wide·Technical Booklet K Ventilation

Regulation 65 shall not apply to a building or a space within a building which is used solely for storage or which is otherwise not intended for use by people. Regulations 65 and 66 shall not apply to

NI-wide·Technical Booklet K Ventilation

Regulation 65(2) shall not apply to the provision or extension of any fixed mechanical ventilation system or associated controls where testing and adjustment is not possible.

NI-wide·Technical Booklet K Ventilation

Regulation 67(a) shall apply only to a dwelling being newly erected or created.

NI-wide·Technical Booklet K Ventilation

Adequate means of ventilation shall be provided for people in a building. Fixed mechanical ventilation systems and any associated controls shall be tested and commissioned to ensure that the requireme

NI-wide·Technical Booklet K Ventilation

Adequate means of ventilation shall be provided for every space in a car park.

NI-wide·Technical Booklet K Ventilation

Where this regulation applies, the person carrying out the work, for the purpose of ensuring compliance with regulation 65(2), shall give, not more than 5 days after completion of the testing and comm

NI-wide·Technical Booklet K Ventilation

Where regulation 65(1) applies, the person carrying out the work shall give, not more than 5 days after completion of the work, a notice in writing to— (a) the building owner giving sufficient informa

NI-wide·Technical Booklet K Ventilation

It is the view of the Department that the requirements of regulation 65 will be met where a ventilation system is provided that, under normal conditions, is capable of limiting, the accumulation of mo

NI-wide·Technical Booklet K Ventilation

In general terms, the requirement may be achieved by providing a ventilation system which – (a) extracts water vapour from areas where it is produced in significant quantities before it becomes widesp

NI-wide·Technical Booklet K Ventilation

Ventilation is required for one or more of the following purposes – (a) provision of outside air for breathing; (b) dilution and removal of airborne pollutants, including odours; (c) control of excess

NI-wide·Technical Booklet K Ventilation

The guidance in Section 2 relates to the ventilation of new and existing dwellings. The Section is split into two parts, the first dealing with new dwellings with 3 ventilation methods suggested which

NI-wide·Technical Booklet K Ventilation

The guidance in Section 3 relates to the ventilation of buildings other than dwellings. The Section is split into two parts, the first dealing specifically with offices with four ventilation methods s

NI-wide·Technical Booklet K Ventilation

The guidance in Section 4 relates to the replacement of windows to existing buildings.

NI-wide·Technical Booklet K Ventilation

It is the view of the Department that the requirements of regulation 66 will be met by making adequate provisions of ventilation to extract pollutants which are hazardous to health from the area where

NI-wide·Technical Booklet K Ventilation

The guidance in Section 5 relates to the natural ventilation, mixed mode and mechanical ventilation of car parks. In addition, it includes an alternative design approach which can be used if predicted

NI-wide·Technical Booklet K Ventilation

It is the view of the Department that the requirements of regulations 67 and 68 will be met where not more than 5 days after completion of the testing or commissioning sufficient information about the

NI-wide·Technical Booklet K Ventilation

Section 1 provides general guidance for Part K and additional guidance addressing the provision of information for dwellings in paragraph 1.28 and for the provision of information for buildings other

NI-wide·Technical Booklet K Ventilation

For the purposes of this Technical Booklet the following definitions apply – Air permeability – the air leakage rate in cubic metres per hour per square metre of envelope area (m3/(h.m2)) at a pressu

NI-wide·Technical Booklet K Ventilation

Equivalent area – a measure of the aerodynamic performance of a ventilator. It is the area of a sharp-edged orifice which air would pass at the same volume flow rate, under an identical applied pressu

NI-wide·Technical Booklet K Ventilation

Gross internal volume – the total internal volume of the heated space, including the volume of all furniture, internal walls, internal floors, etc. Habitable room – is a room used for dwelling purpos

NI-wide·Technical Booklet K Ventilation

Intermittent operation – a mechanical ventilator that does not run all the time, usually running only when there is a particular need to remove pollutants or water vapour (e.g. during cooking or bathi

NI-wide·Technical Booklet K Ventilation

Non-domestic building – means a building or part of a building which is not a domestic building. Ocupiable room – a room in a building other than a dwelling that is occupied by people, such as an off

NI-wide·Technical Booklet K Ventilation

Passive stack ventilation (PSV) – a ventilation system using a duct from the ceiling of a room to a terminal on or above the roof, which operates by a combination of the natural stack effect (i.e. the

NI-wide·Technical Booklet K Ventilation

Permanent ventilation opening – a ventilation opening which is permanently fixed in the open position.

NI-wide·Technical Booklet K Ventilation

Rapid ventilation – ventilation by either natural means, using a large adjustable ventilation opening (e.g. a window) some part of which is not less than 1.75 m above floor level, or by mechanical mea

NI-wide·Technical Booklet K Ventilation

Purpose-provided ventilation – that part of the ventilation of a building provided by ventilation devices designed into the building (e.g. via background ventilators, PSV, extract fans, mechanical ven

NI-wide·Technical Booklet K Ventilation

Sanitary accommodation – is defined in regulation 84 in Part P of the Building Regulations.

NI-wide·Technical Booklet K Ventilation

Stack effect – the pressure differential between inside and outside a building caused by differences in the density of the air due to an indoor/outdoor temperature difference.

NI-wide·Technical Booklet K Ventilation

Surface water activity – a measure of the availability of water to micro-organisms and is determined from the ratio of the vapour pressure of the water in the substrate to that of pure water at the sa

NI-wide·Technical Booklet K Ventilation

Utility room – a room used primarily for laundry purposes which may contain a sink, washing machine, tumble drier or similar moisture producing equipment and which is not entered solely from outside t

NI-wide·Technical Booklet K Ventilation

Ventilation – the supply and removal of air (by natural and/or mechanical means) to and from a space or spaces in a building. It normally comprises a combination of purpose provided ventilation and in

NI-wide·Technical Booklet K Ventilation

Ventilation opening – any part of a window, or any hinged panel, adjustable louvre or other means of ventilation which opens directly to the external air or to an enclosed place, but does not include

NI-wide·Technical Booklet K Ventilation

Wet room – a room used for domestic activities (e.g. such as cooking, clothes washing and bathing) which give rise to significant production of airborne moisture (e.g. a kitchen, utility room or bathr

NI-wide·Technical Booklet K Ventilation

Whole building ventilation (general ventilation) – nominally continuous ventilation of rooms or spaces at a relatively low rate to dilute and remove pollutants and water vapour not removed by the oper

NI-wide·Technical Booklet K Ventilation

The guidance in this Technical Booklet has not been formulated to deal with the products of tobacco smoking.

NI-wide·Technical Booklet K Ventilation

Consideration should be given to the mitigation of ventilation energy use, where applicable, by employing heat recovery devices, efficient types of fan motors and/or energy saving control devices in t

NI-wide·Technical Booklet K Ventilation

Exposure to house dust mite (HDM) allergens can lead to allergic sensitization and to exacerbation of allergic conditions. The moisture criteria needed to avoid HDM are more complex and demanding than

NI-wide·Technical Booklet K Ventilation

It can be anticipated that there will be a continual trend towards more airtight buildings due to drivers for higher energy efficiency and lower carbon emissions. Through good design and construction,

NI-wide·Technical Booklet K Ventilation

The ventilation provisions recommended for new dwellings in this Technical Booklet have been specified according to two standard designs of air permeability – (a) in the default option, the guidance a

NI-wide·Technical Booklet K Ventilation

Where a building contains both living accommodation and space to be used for commercial purposes (e.g. a workshop or office), the whole building should be treated as a dwelling as long as the commerci

NI-wide·Technical Booklet K Ventilation

When constructing a dwelling as part of a larger building that contains other types of accommodation, Section 2 of this Technical Booklet should be used for guidance in relation to each individual dwe

NI-wide·Technical Booklet K Ventilation

This Technical Booklet adopts the following strategy (systems that comply with the strategy are described in Sections 2 and 3) – (a) using either intermittent or continuous extract ventilation from ro

NI-wide·Technical Booklet K Ventilation

provide rapid ventilation throughout the building to aid removal of high concentrations of pollutants and water vapour released from occasional activities such as painting and decorating or accidental

NI-wide·Technical Booklet K Ventilation

This ventilation strategy can be delivered by a natural ventilation system or a mechanical ventilation system or a combination of both (i.e. "a mixed mode" or "hybrid" ventilation system). For mainly

NI-wide·Technical Booklet K Ventilation

This Technical Booklet focuses on performance-based guidance which suggests to the designer what level of ventilation should be sufficient, rather than how it should be achieved. Therefore, the design

NI-wide·Technical Booklet K Ventilation

The actual performance criteria for acceptable levels of moisture and pollutants are given in Appendix A. The air flow rates necessary to meet the performance criteria are given in Sections 2 and 3.

NI-wide·Technical Booklet K Ventilation

Simple guidance in the form of ventilator sizes for the whole dwelling is also provided to make it easier for designers to meet building regulation requirements in common situations.

NI-wide·Technical Booklet K Ventilation

Trickle ventilators are available which "throttle down" the ventilation flow according to the pressure difference across the ventilator so as to reduce draughts during windy weather.