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Single Storey Rear Extension - Case Study
Single Storey Rear Extension CASE STUDY
Islington
Ground floor single storey rear extension
Project duration - 14 weeks
Scope
Building a 3m permitted development
single storey rear extension
to old Victorian town house
Internal refurbishment maintaining original features of the property
Large bi fold doors to rear with addition of 2 no skylights
New kitchen located in
extension
P
REPARATION
Set up secure hoarding for site access and protection
Set up of plant and delivery of initial materials
Isolation of services on site for safety
G
ROUNDWORKS
Digging the foundations with depths dependent on-site conditions
Building Control to visit the site and approve the foundations
Pipework, drainage and services will then be laid within the foundations
Concrete footing will be poured in and levelled
Bricklayers to build up the damp-proofing course
Building Control will need to visit again to approve the damp proof course
S
UPERSTRUCTURE
Drains will be installed and trenches dug for the pipework
Concrete lintels will be inserted into the brickwork, if required
Steels will be put in place, along with pad stones that have been approved by Building Control
Sand will then be laid before damp-proofing membrane is put down
Insulation will be fitted
The concrete slab for flooring will be poured
E
XTERNAL WALLS
The external cavity walls will start to be built from blockwork and brickwork
Cavity wall insulation will be fitted
Wall ties will be inserted to fix the new walls to the existing ones
Lintels for windows and doors will be fitted
At this stage the external windows and doors will need to be templated
R
OOF STRUCTURE
The
roof structure
will be created as per the design and structural engineers’ specification.
If you’re having rooflights, these openings will be created
Roofing membrane will be laid over the new rafters
Tiles/slates will be laid or fibre glass depending on flat or pitched
roof construction
Fascias, soffits, verges and guttering will be fitted
The concrete slab for flooring will be poured
I
NTERNAL WALLS
Internal walls will be built and plasterboard applied to the inside face of the new walls
First-fix carpentry, plumbing and electrics will be completed
W
INDOWS AND DOORS
The bi fold/ sliding doors will be fitted along with any roof windows creating a water tight extension.
P
LASTERING AND DECORATING
Plastering will take place and must then be left around a week before decorating can be carried out
Once the plaster is dry the first couple coats of paint can be applied
S
ECOND-FIX
Second-fix electrics will be carried out, which means sockets will be made live, switches will be put in place and lights fitted
Flooring will be fitted along with skirting boards
Second-fix plumbing means taps will be installed and connections completed
Kitchen
units will be installed
E
XTERNAL WORKS
Once the bulk of the building materials are cleared from site works such as fencing can take place
Gardens walls can be created for flower beds
Decking/ tiles can be laid to create an external patio area
View Completed Project     >>
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Your budget: £75 000+
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