Loft conversions /
Pressure on space and changes in planning law mean that loft conversions are now at the forefront in the race to improve the performance of Britain's ageing housing stock. Since 1990, roof space conversions have increased UK housing capacity by more than 200 million square feet - a living area...
Saved in:
| Main Author: | |
|---|---|
| Format: | Electronic eBook |
| Language: | English |
| Published: |
Chichester ; Ames, Iowa :
Wiley-Blackwell,
2013.
|
| Edition: | 2nd ed. |
| Subjects: | |
| Online Access: | CONNECT |
Table of Contents:
- Machine generated contents note: 1. Planning and legal considerations
- Permitted development
- Permitted development law
- Commentary on permitted development provisions
- England
- Permitted development restrictions
- Curtilage: raising party walls
- Conservation areas
- Article IV directions
- Planning conditions affecting permitted development
- Listed buildings
- Other conditions affecting development
- Restrictive covenants
- Mortgage lenders
- Buildings and contents insurance
- Tree preservation orders
- Bats
- Lawful Development Certificate
- Planning permission
- Planning applications
- Sources of planning guidance
- Supplementary planning guidance
- Supplementary planning documents
- Design guides
- Design codes
- Local Development Framework
- Unitary Development Plan
- Party Wall etc. Act 1996
- Procedure
- Disputes
- 2. Building Regulations and building control
- Building Act 1984
- Building Regulations
- Approved Document guidance
- Compliance guides
- Relationship between the Building Regulations and the Approved Documents
- Building control
- Local authority building control
- Full plans
- Building notice
- Notification and inspection of work
- Resolving Building Regulations disputes
- Electronic building control applications
- Approved inspector building control
- 3. External forms
- Primary influences on form
- Planning considerations
- Pitch, plan and headroom
- Stair access
- Shallow-pitched roofs
- Existing roof type
- Conversion forms
- Roof space only conversion
- Box dormer conversion
- Front box dormer conversion
- Hip-to-gable conversion
- Side dormer conversion
- Full-width dormer with masonry flanks
- Mansard conversion
- Lean-to conversion
- Half dormer
- Existing attic rooms
- Galleries and platforms
- Traditional dormer forms
- Gabled dormer
- Hipped dormer
- Flat dormer (small)
- Cat slide dormer
- Recessed dormer
- Eyebrow dormer
- Arched dormer
- Segmental dormer
- Pedimented dormer
- Canted bay dormer
- Design considerations
- Fenestration
- Roof detail
- Vertical cladding and roofing materials
- Chimney positions
- Drainage
- 4. Fire safety
- Regulatory framework
- Main changes to Approved Document B (2006)
- Fire resistance: basic requirements
- Warning and escape
- Floor height rules
- Storey and floor numbering rules
- Fire safety: common configurations
- floor not more than 4.5 m above lowest ground level
- Means of warning
- Means of escape
- One floor more than 4.5m above ground level
- Means of warning
- First floor fire resistance
- New floor (conversion)
- Escape windows
- Means of escape
- More than one floor over 4.5m above ground level
- Galleries
- Elements and terminology
- Access room
- AFD
- Air circulation systems
- Alternative escape route
- Automatic self-closing devices (self closers)
- Balconies and flat roofs
- Cavity barriers
- Doors
- glazing in final exit
- Emergency egress (escape) windows and external doors
- Escape route
- Final exit
- Fire curtains
- Fire detection and fire alarm systems
- Fire doors
- Fire stopping and the protection of openings
- Habitable room
- Inner room
- Inner inner room
- Loft conversion
- Modified 30-minute protection
- Open plan layouts
- Passenger lifts
- Sprinkler systems
- Storey exit
- Storey height measurement
- Fire safety in context
- 5. Conversion survey
- Survey procedure
- Outline of survey elements
- Survey elements in detail
- Age of the building
- Headroom and floor-to-ceiling height
- External relationships
- Internal layout
- Roof form
- Roof structure
- Roof condition
- Walls
- Foundations
- Internal walls and partitions
- Floor and ceiling structure
- Strength of existing timber elements
- Water tanks
- Drainage and services
- Chimneys
- 6. Beams and primary structure
- Approved Document guidance
- Beam position relative to existing structure
- Beam characteristics
- Common structural steel sections
- Engineered timber beams
- Fire resistance of beams
- Beam bearings
- Mild steel bearing plates
- Padstones
- Beam penetration
- Beam splices
- Flange and web plate splice
- End plate beam splices
- Splice box
- Inline box
- PFC bearing
- Beam-to-beam connections
- Bolted connections
- Grade 4.6 bolts
- Grade 8.8 ̀high-strength' bolts
- HSFG bolt assemblies
- Toothed plate connectors
- Timber to masonry connections
- Tension straps
- Expansion bolts
- Chemical anchoring
- Disproportionate collapse
- 7. Floor structure
- Role of the conversion floor
- Elements of loft conversion floor design
- Room height in the conversion (headroom)
- Methods of support for floors
- Beam-supported floors
- Wall-supported floors
- Floor joist selection
- Joist spacing
- Timber supplies
- Machined (regularised) joist sections
- Holes and notches in joists
- Binders
- New floor joist/existing ceiling clearance
- Strutting
- Trimming
- Lateral support by floors
- Floor fire resistance
- Conversion floor (fire and sound resistance)
- Floor materials and fixing
- Conditioning
- Staggered joints
- Moisture and sound resistance
- Fixing
- T & G floor panels
- Timber floorboards
- Stairs
- Headroom
- Landings
- Stair configuration
- Structural implications
- Stair provision: practical aspects
- 8. Wall structure
- External stud walls
- Stud arrangement and spacing
- Elements of stud wall construction
- Terminology
- Openings
- Supporting structural steel in stud walls
- Vertical cladding
- Fire resistance of dormer stud walls
- Masonry walls (external)
- Hip-to-gable conversion
- Safety considerations during construction
- Lateral restraint of flank gable walls
- Brick selection and size
- Solid blockwork
- Mortar and brickwork
- Parapet walls in loft conversions
- Integrating new and old
- Chimney cowls
- Compartment (party) walls
- Internal partitions
- Window and door safety
- Windows
- Juliet balconies and balustrades
- Glazing requirements for doors
- Cleaning
- Replacement windows
- 9. Roof structure
- Roof types
- cut roof (common to about 1950)
- TDA roof truss (common 1947-1980)
- Trussed rafter roofs (1965 to present)
- Cut roof: structural forms
- Single roofs
- Double roofs
- Cut roof: structural elements
- Purlin
- Ridge and rafters
- Wall plates
- Ceiling joists and collars
- Cut roof: common conversion alterations
- Modification of the roof structure
- Reasons to remove a purlin
- Replacement support for purlins
- Rafters
- Trimming
- Sizing and loading of rafters
- Hip-to-gable conversion
- Notches and holes
- Lateral support for gables
- Replacement roof coverings
- Flat roof: basic structure
- Flat roof
- warm deck (unventilated)
- Flat roof
- cold deck (ventilated)
- Flat roof
- hybrid warm roof (unventilated)
- Roof ventilation
- Continuity of airflow around roof windows
- Ventilation
- possible exemptions from the requirement
- Approved Document guidance
- Attic trusses
- 10. Energy performance
- Methods of compliance
- reference method (elemental approach)
- Area-weighted U-value method (optional approach)
- Whole dwelling calculation method (optional approach)
- Walls and roofs
- performance requirements
- U-values for new thermal elements
- U-values for retained thermal elements
- Standards for replacement thermal elements in an existing dwelling
- Standards for renovation of thermal elements
- Energy conservation
- practical approaches
- Insulation materials
- Fixing internal insulation
- Airtightness
- Thermal bridging
- Insulation for wall and roof elements
- Existing (retained) solid brick masonry walls
- New solid brick masonry walls
- New solid blockwork walls
- Existing (retained) cavity masonry walls
- New cavity masonry walls
- New tile hung stud walls
- Existing (retained) or new pitched roof
- New flat warm roof
- New flat cold deck
- Windows and other openings
- Area of windows
- Risks associated with insulation
- Surface condensation
- Interstitial condensation
- all elements
- Spalling risk
- masonry walls
- -- Electric lighting
- Practical implications
- Heating and hot water systems
- Providing information about energy efficiency
- Loft insulation when a loft is not converted
- Ventilation for occupants
- Background ventilation
- Purge (rapid) ventilation
- Extract ventilation
- Ventilation
- practical measures
- All rooms
- Habitable room (with external wall)
- Habitable room (with no external wall)
- Bathroom (with external wall)
- Bathroom (with no external wall)
- WC (with external wall)
- WC (with no external wall)
- Providing information about ventilation
- 11. Lofts in context
- Why convert?
- Loft conversion statistics
- Underlying trends
- nature of the housing stock
- Practical sustainability
- Renewable energy
- Reducing solar gain
- Green roofs
- Water conservation
- Reducing construction waste and re-using materials
- Energy Performance Certificates (EPCs) and insulating to a higher standard
- Towards zero carbon
- Zero Carbon Loft.
