Approved Document N, Part N1, deals with Protection against Impact, defining areas
of Critical (High Risk) Glazing & the Type of Glass to be used in those areas.
-
Glazing with which people are likely to come into (physical) contact whilst moving
in or about the building shall;
1. if broken on impact, break in a
way which is unlikely to cause injury; or
2. resist impact without
breaking; or
3. be shielded or protected from impact
-
Areas considered to be High Risk are;
1. Windows where the bottom of
the glass is within 800mm of floor level
2. All glass within Doors
from floor level up to a height of 1500mm
3. All glass within Door
Side Panels & Windows adjoining Doors from floor level up to a height of 1500mm
& to a width of 300mm
Safe Breakage
is defined in BS6206: 1981 'Specification for impact performance requirements
for flat safety glass and safety plastics for use in buildings: paragraph 5.3.
In practice, Compliance is achieved by using Toughened or Laminated Safety Glass
as specified in BS6206 in all Critical (High Risk) Areas
NB1
Although not specifically covered in Document N, locations
such as windows next to baths or showers & windows
on stairs or landings should also be considered as Critical Areas if there is
any risk of impact.
NB2 Due to the manufacturing
process Safety Glass may appear to be of a slightly different 'tint' to normal
glass. Good Industry
Practice is to install Safety Glass in all the panes of a Door or Window which
Require any Safety
Glass. See Diagram 1 above, Panes 1, 3, 9 & 10 should also be glazed with Safety
Glass in order to achieve
consistent light transmission.
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Regulations for
the Following Section are Different for Commercial Properties & Residential Properties
In Practice We Comply with the Following, More Stringent Regulation, which is
for Residential Dwellings
All of our Secondary Glazing takes Account
of Fire Safety Requirements:
BUILDING REGULATIONS B1 - Fire safety
For a typical Domestic Dwelling (storeys not more than 4.5 Metres above ground
level) Approved Document B Requires that all Habitable Rooms (living rooms & bedrooms
but not bathrooms or kitchens) on and above the First Floor must be provided with
Emergency Egress (escape).
In addition,
rooms at Ground Floor level whose' only Fire Escape is via another room are also
required to be provided with suitable Escape Windows.
This means an External Door (above ground floor) or Window that Complies with
the Specification contained at 2.11 of the Document: Any window provided for emergency
egress purposes and any external door provided for escape should comply with the
following condition.
The window should
have an unobstructed openable area that is at least 0.33 Metres Square and at
least 450mm high and 450mm wide. The bottom of the openable area should be not
more than 1100mm above the floor.
In practise this is achieved by fitting an Egress Brand Fire Escape Hinge to a
Designated Casement Opening in each Habitable Room on & above the First Floor.
NB The
above wording applies to the Primary Windows - Granada Designs Secondary Glazing
Installations to Ensure
That Emergency Egress & suitable Escape Windows are Not Obstructed.
NB
Due to the original construction of some properties (particularly
post war bay fronted houses) it is not always possible
to comply with the 2.11 specification, which was introduced in 2000. Latest News
from the FENSA website (02/10/02)
states:
'The size of fire-escape provision in window refurbishment
In answer to recent questions concerning the above topic, senior representatives
of FENSA, GGF and BBA, have agreed on their understanding of the requirements.
Their understanding is as follows:
Where a window that has been
used as a means of escape is replaced with the same proportional fenestration
as previously existed (i.e. transom and mullion and sash layout is the same) and
modern materials are used, it is possible that the casement openers may create
a slightly smaller aperture due to the use of larger sections. Where these windows
are replacing existing frames, it is the opinion of the above, that a window of
this design will still be acceptable to FENSA as a form of fire-escape, provided
it is fitted with modern, 'fire-escape' type hinge which allows for full opening
of the window to 90º.
This understanding of the requirements applies
only to refurbishment work.
The three organizations listed above will
be discussing this view with the appropriate authorities requesting that they
accept this 'understanding' of the Regulations.
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Regulations for the Following
Section are Different for Commercial Properties & Residential Properties
In Practice We Comply with the Following, More Stringent Regulation, which is
for Residential Dwellings
All of our Secondary Glazing takes Account
of Ventilation requirements:
BUILDING REGULATIONS F1 - Ventilation
Approved Document F1 deals with the
Requirements for the Means (type) and Volume (amount) of Ventilation.
In practice, replacing 'like for like' in terms of the amount & size of opening
Casements, Top-lights & Sashes will usually Comply.
If Replacements are not 'like for like' and the amount &/or sizes of openings
are being reduced then it will be necessary to take measurements and make calculations
to ensure Compliance with the Table below.
NB
Part F1 - 1995 recommends controllable trickle ventilation for
all new buildings and refurbishments requiring
planning permission in order to combat condensation.
The recommendations
are:
Domestic Building: Habitable Room - 8000mm2; Other Rooms -
4000mm2.
Non Domestic Building (without mechanical ventilation):
Occupiable Rooms and Rest Rooms - 4000mm2/10M2; Common Spaces - No Requirement;
Other Rooms - refer to regulations but secondary glazing not normally supplied.
NB
Ventilators will reduce the effectiveness of Noise Insulation
so if the level of Sound Reduction is critical wall mounted
Acoustic Ventilators may have to be considered.
GAS SAFETY (INSTALLATION
AND USE) REGULATIONS - 1998
NB The Installation
of Secondary Double Glazing Must Not Interfere with the Permanent Ventilation
provided via the Primary
Windows for the Ventilation of Gas Appliances.
Refer to Statutory Instrument
1998 No. 2451 - the Gas Safety (Installation and Use) Regulations 1998
http://www.opsi.gov.uk/si/si1998/19982451.htm
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BUILDING REGULATIONS
E - Resistance to the Passage of Sound 27/04/2006
Parts
E1, E2, E3 & E4
Variously deal with Protection Against Sound and Acoustic
Conditions
Covers:
All Residential New-Build
All
Non-Residential New-Build
Material Change of Use
NB This
Section means that the Regulations for New-Build Apply to the following situations:
Conversion
of Residential to Commercial
Conversion of Commercial to Residential
Conversion of a House to Flats
Conversion of Flats to a House
E4
Covers Acoustic Conditions in Schools
The 2003 Edition
Introduced
a New Class of Dwelling known as A Room for Residential Purposes
NB This
covers Hotel Rooms & Hostel Type Accommodation
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BUILDING REGULATIONS
L1 - Conservation of fuel & power in dwellings
It is Approved Document L1, effective from 1st April 2002, that has introduced
the new Requirement that all Replacement Window & Door Installations must have
Building Regulations Approval from the local Council.
The main thrust of L1, however, is Compliance with strict new Legal Requirements
for the conservation of fuel & power in dwellings.
This is achieved by limiting emissions (escape of heat) through windows & doors
by requiring that they meet laid down levels of insulation (thermal transmittance).
Thermal transmittance is a measure of how much heat will pass through one square
metre of a structure (door or window) when the air temperatures on either side
differ by one degree. This measurement is known as the U-value. The lower the
U-value the better the level of insulation, and vice versa. - Replacement
Windows & Doors must have a U-value of 2.0 or less.
BUILDING
REGULATIONS L1A, L1B, L2A & L2B 15/03/2006
Extend
The Regulations to Cover New and Existing Dwellings and Buildings Other Than Dwellings
Material Change of Use
NB This Section means that
the Regulations for New-Build Apply to the following situations:
Conversion
of Residential to Commercial
Conversion of Commercial to Residential
Conversion
of a House to Flats
Conversion of Flats to a House
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THE MANAGEMENT OF HEALTH
AND SAFETY AT WORK (AMENDMENT) REGULATIONS 2006
During the course
of all work being carried out Statutory Health & Safety Requirements are complied
with to ensure the Health, Safety & Welfare of Operatives, Customers and Members
of the Public.
A Full
Copy of our Health & Safety Policy is Available Upon Request
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THE CONTROL OF SUBSTANCES HAZARDOUS
TO HEALTH REGULATIONS 2002
Based upon Guidance from The Health &
Safety Executive and our Own Investigations, There are no Hazardous Substances
within our Secondary Glazing.
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RISK ASSESSMENT
We
have carried out a Risk Assessment & Regularly Review it in accordance with Guidance
from The Health & Safety Executive:
We have,
Identified the
hazards
Decided who might be harmed and how
Evaluated the risks and decided
upon precautions
Recorded our findings and implemented precautions
We
regularly review our assessment and update if necessary
Before starting
work on a New Site we Consider if there are any New or Different Hazards and if
so Undertake a Specific Assessment
A Full Copy of our Risk Assessment is Available Upon Request
NB The
Risk Assessment for Installed Secondary Glazing in a Commercial Environment becomes
the Responsibility of the Purchaser - We are happy to Provide Advice for Maintenance
Staff, Window Cleaners & Operatives.
Reference
should also be made to our Operating & Maintenance Instructions
http://www.hse.gov.uk/
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|
Granada
Secondary Glazing Limited, Units 1 & 2, Carrwood Road,
Chesterfield Trading
Estate, Chesterfield, S41 9QB
Registered in England and Wales Reg No. 3004583
VAT Reg No. 648 2229 28 |
