Chapter 1 Planning and legal considerations.
Permitted Development The GPDO Volume calculation Certificates of Lawfulness Curtilage and party walls Conservation Areas Article IV directions Listed buildings Planning permission Planning applications Planning guidance specific to loft conversions Conditions affecting development Unified Consent Regime The Party Wall Act.
Chapter 2 The Building Regulations and building control.
The Building Act 1984 and the Building Regulations Approved Document guidance Building control Building control services Full plans procedure Building notice procedure Notification and inspection of work Certificate of Completion of Work Disputes The Determination procedure The Relaxation/Dispensation procedure Appeals Buildings of historic or architectural interest Electronic building control applications Approved Inspector building control.
Chapter 3 External forms.
Influences on form Roof space only conversion Box dormer conversion Front box dormer Full width dormer with masonry flanks Mansard conversion Hip–to–gable conversion Side dormer conversion Lean–to conversion Half dormer Existing attic rooms Sleeping gallery Traditional dormer forms Gabled dormer Hipped dormer Flat former Catslide dormer Recessed dormer Eyebrow dormer Arched dormer Segmental dormer Pedimented dormer Canted bay dormer Design considerations Fenestration Roof details Vertical cladding External drainage.
Chapter 4 Fire.
Fire resistance Warning and escape Floor height rules Storey numbering Single–storey dwellings Two–storey dwellings Three–storey dwellings Sleeping galleries Ongoing requirements Elements and definitions Proposed changes to guidance.
Chapter 5 Conversion survey.
Survey procedure Survey elements Age of 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.
Chapter 6 Beams and primary structure.
Steel and timber structural design codes Beam position relative to existing structure Beam characteristics Structural steel sections Characteristics of engineered timber beams Fire resistance of beams Bearing plates Padstones Beam penetration Beam splices Bolted connections Timber to masonry connections Disproportionate collapse and loft conversions.
Chapter 7 Floor structure.
The conversion floor Elements of loft conversion floor design Room ceiling height Methods of support Beam–supported floors Underslung floor joists Floor joists into beam webbing Additional support for existing ceiling joists Wall–supported floors Floor joist selection Binders Floor joist–to–ceiling clearance Strutting Trimming Lateral support by floors Conversion floor fire and sound resistance Floor materials and fixing Flooring Stairs Stair configuration Conventional stairs Alternating tread stairs Fixed ladders.
Chapter 8 Wall structure.
External stud walls Stud arrangement and spacing Elements of stud wall construction Sheathing Breather membrane Vertical cladding Stud wall fire resistance External masonry walls Hip–to–gable conversion Safety considerations Lateral restraint of flank gable walls Brick size and selection Reclaimed bricks New bricks Solid blockwork Mortar and brickwork Parapet walls in loft conversions Integrating new elements with old Compartment (party) walls Internal partitions Window and door safety Guarding Glazing Balustrades.
Chapter 9 Roof structure.
The cut roof The TDA truss Trussed rafter roofs Cut roof structural forms Couple roof Collar roof Close couple roof Lean–to roof Butterfly roof Double roofs Cut roof structural elements Common conversion alterations Hip–to–gable conversion Notches and holes Lateral support for gables Replacement roof coverings Flat roofs Warm deck Cold deck Preventing condensation Ventilation Attic trusses.
Chapter 10 Energy conservation.
Status of the guidance Windows and other openings Fixed internal lighting Heating and hot water systems Insulation and thermal elements Standards for new elements Standards for replacement elements Standards for retained elements Standards for renovation of thermal elements Additional obligations Practical measures Windows Existing solid brick masonry walls New solid brick masonry New solid blockwork walls Existing cavity masonry walls New cavity masonry walls New tile–hung stud walls Existing or new pitched roof New flat warm roof Flat cold deck Ventilation for occupants.
Appendix 1 Specification.
Beams New floor Dormer walls Hip–to–gable Purlin walls Internal partitions Stair enclosure Roof windows Escape window Windows and ventilation Insulating existing roof slopes Ventilating roof slopes Warm deck flat roof Cold deck flat roof Stair access Electrical Drainage Fire Water tanks.
Appendix 2 The Building Regulations: appeals and determinations.
Open–plan layout at ground–floor Sprinkler systems and open–plan layouts Potentially habitable rooms and enclosure Doors of unknown fire resistance .
Open–plan layout escape windows Definition of a stair Stair design: pitch and going Stair design: selective application of regulations Means of escape: floors more than 7.5 m above ground level Means of escape: ladder brackets Means of escape: structural constraints Sleeping gallery.
Appendix 3 Planning and curtilage.
Interpretation of curtilage appeal decision letter.
Bibliography and references.
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