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Loft
Conversions
Loft conversions and extensions are a way
of giving you greater living space and increasing the value
of your property. Also, you have a great say in the way your
property is designed to suite your needs and life style.
At Gregory and son we understand how such
projects need to be handled and can offer you either a full
start to finish service ensuring careful planning and good
quality building works throughout, or help you liase with
architectural services or other contractors.
Our property and build services range from
loft, flats and house conversions to building extensions,
our team will help you prepare an individual scheme proposal
after thoroughly exploring the potential of your property.
As a company we offer a personal professional
service and a quality of workmanship second to none because
at Gregory and son we employ our own qualified electricians,
bricklayers, painters, plasterers and plumbers ensuring continuity
of work from start to finish.
Things
to consider
Loft conversions have become a very popular way of extending
domestic properties. Experience, however, shows that this
seemingly simple concept can cause major problems in complying
with the Building Regulations.
Before embarking on any building work, including loft conversions,
it is advisable to obtain professional advice from an Architect,
Surveyor and/or Structural Engineer. North Tyneside Building
Control have staff on hand to discuss the proposals prior
to making a Building Regulation application.
Below is a brief guide to areas of construction which will
require particular attention when planning the actual conversion
works.
The roof
The construction of the existing roof will be a major factor
in deciding what is achievable in changing the loft area into
a ‘liveable space’.
These alterations will inevitably mean adapting the structure
to form either dormer windows or roof lights. It will generally
be necessary to provide an engineer’s design to show
how the additional loadings on the roof or supporting structure
will be maintained.
A further consideration is the placing of insulating materials
within the roof slope and the precautions necessary to prevent
damage from condensation in the void area.
The floors
The existing ceiling joists are unlikely to be able to support
the additional loads from a new floor for domestic use.
The new floor elements must have adequate support and should
be sized and spaced according to the spans involved.
This new element of construction within the dwelling will
need to be afforded an adequate level of fire resistance to
ensure its stability in case of fire.
The Walls
The new floor must be supported by load bearing walls adequate
to carry the new loads and must have a suitable foundation.
A full structural appraisal by an appropriately qualified
professional is therefore recommended.
Fire resistance of the walls, both new and existing, is again
of major importance and expert advice will again be needed.
Depending on the layout, the new doors will have to be fire
doors or in some cases existing doors ‘fitted with’
self-closing devices.
Generally any existing glazing contained in the walls of the
stairway enclosure must be replaced by fire resistant glass.
In the case of the walls to a dormer window it will be necessary
to ensure they are suitably weatherproofed and insulated.
If the dormer is close to an adjoining property it will be
necessary to provide additional fire protection to this element
from both inside and outside.
The Stairs
The preferred access to the new room should be via a traditional
straight flight of stairs with landing top and bottom. Spiral
staircases, fixed ladders and alternating tread stairs are
considered in special circumstances, however only where there
is insufficient space to accommodate a standard stair.
Suitable guarding and handrails must be provided to the stairs
and adequate headroom maintained, usually measured at two
metres vertically above the flight.
Escape in case of fire
The principal route of escape is provided by the staircase,
which must discharge to a suitable final exit, normally a
front or rear door.
The new room(s) should, where the new and existing staircases
are not fully enclosed with fire doors to all rooms, have
an openable window or roof light provided for escape and rescue
purposes.
This window should be readily accessible, large enough to
escape through and close enough to eaves level to aid rescue
from an external source.
Additional fire precautions apply if the loft conversion exceeds
50m squared in floor area or the new second storey contains
more than two habitable rooms.
Building
inspector
During any construction project you can expect a visit from
the local Building Inspector or Building Control Department.
We have included some information here on this process so
you can know what to expect.
When
contacting the department for an inspection it is useful if
you give the following information:
1. The inspection required
2. Preferred time of visit
3. Application number
4. Site Address
5. Builders Name
This
will help the inspector provide you with the next best service.
It is important that you request all of the relevant inspections
for your works so that a certificate can be issued on completion.
You,
or your builder must notify the council not less than 48 hours
before commencing work and at the following stages:
1. At the excavation of the foundations.
2. After concreting the foundations.
3. At damp proof course level.
4. When hardcore is laid over the site.
5. Before covering any drains.
6. After drainage is complete.
7. Before occupation, which will generally include a test
of the plumbing.
8. On completion of the work.
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