NHBC
  • Home
  • 1 Welcome
    • 1.1 Contact us
    • 1.2 What’s changed
  • 2 Introduction
    • 2.1 The Standards and Technical Requirements
    • 2.2 3D Models
  • 3 General
    • 3.1 Concrete and its reinforcement
      • 3.1.1 Compliance
      • 3.1.2 Provision of information
      • 3.1.3 Storage of materials
      • 3.1.4 Site-mixed concrete
      • 3.1.5 Ready-mixed concrete
      • 3.1.6 Concrete specification
      • 3.1.7 Admixtures
      • 3.1.8 Special types of concrete
      • 3.1.9 Design of reinforced concrete
      • 3.1.10 Installation of reinforcement
      • 3.1.11 Blinding concrete
      • 3.1.12 Formwork
      • 3.1.13 Before concreting
      • 3.1.14 Casting
      • 3.1.15 Curing
      • 3.1.16 Testing
      • 3.1.17 Glossary
    • 3.2 Cold weather working
      • 3.2.1 Compliance
      • 3.2.2 External conditions
      • 3.2.3 Materials
      • 3.2.4 Concreting
      • 3.2.5 Masonry
      • 3.2.6 Rendering, plastering and screeding
      • 3.2.7 Admixtures
      • 3.2.8 Painting
    • 3.3 Timber preservation (natural solid timber)
      • 3.3.1 Compliance
      • 3.3.2 Durability
      • 3.3.3 Sitework
      • 3.3.4 Protection and storage
      • 3.3.5 Treatment of cut surfaces
      • 3.3.6 Compatibility with metal
      • 3.3.7 Further information
  • 4 Foundations
    • 4.1 Land quality – managing ground conditions
      • 4.1.1 Compliance
      • 4.1.2 Initial Assessment – desk study (all sites)
      • 4.1.3 Initial Assessment – walkover survey (all sites)
      • 4.1.4 Initial Assessment – results
      • 4.1.5 Basic Investigation (sites where hazards are not identified or suspected)
      • 4.1.6 Detailed Investigation (sites where hazards are identified or suspected)
      • 4.1.7 Managing the risks (sites where hazards are found)
      • 4.1.8 Unforeseen hazards
      • 4.1.9 Documentation and verification
      • 4.1.10 Guidance for investigations
      • 4.1.11 Further information
    • 4.2 Building near trees
      • 4.2.1 Compliance
      • 4.2.2 Provision of information
      • 4.2.3 Building near trees
      • 4.2.4 The effects of trees on shrinkable soils
      • 4.2.5 Foundations in all soil types
      • 4.2.6 Excavation of foundations
      • 4.2.7 Foundations in shrinkable soils
      • 4.2.8 Design and construction of foundations in shrinkable soils
      • 4.2.9 Foundation depths for specific conditions in shrinkable soils
      • 4.2.10 Heave precautions
      • 4.2.11 New drainage
      • 4.2.12 Foundation depth charts
      • 4.2.13 Foundation depth tables
      • 4.2.14 Example
      • 4.2.15 Further information
    • 4.3 Strip and trench fill foundations
      • 4.3.1 Compliance
      • 4.3.2 Provision of information
      • 4.3.3 Ground conditions
      • 4.3.4 Hazardous ground
      • 4.3.5 Setting out
      • 4.3.6 Services and drainage
      • 4.3.7 Safe transmission of loads
      • 4.3.8 Sloping ground and stepped foundations
      • 4.3.9 Excavations
      • 4.3.10 Reinforcement
      • 4.3.11 Concrete
      • 4.3.12 Movement joints
      • 4.3.13 Construction joints
    • 4.4 Raft, pile, pier and beam foundations
      • 4.4.1 Compliance
      • 4.4.2 Provision of information
      • 4.4.3 Site conditions
      • 4.4.4 Hazardous ground
      • 4.4.5 Services and drainage
      • 4.4.6 Safe transmission of loads
      • 4.4.7 Construction
      • 4.4.8 Engineer checks
      • 4.4.9 Compressible materials
      • 4.4.10 Reinforcement
      • 4.4.11 Concrete
      • 4.4.12 Movement joints
      • 4.4.13 Resistance to moisture
    • 4.5 Vibratory ground improvement techniques
      • 4.5.1 Compliance
      • 4.5.2 Hazardous sites and ground hazards
      • 4.5.3 Desk study and site investigation
      • 4.5.4 Confirmation of suitability for treatment
      • 4.5.5 Suitability of ground conditions
      • 4.5.6 Compatibility of the ground, design and treatment
      • 4.5.7 Acceptable methods
      • 4.5.8 Materials for use as fill
      • 4.5.9 Granular material
      • 4.5.10 Sitework
      • 4.5.11 Adjacent excavations
      • 4.5.12 Verification of completed treatment
  • 5 Substructure, Ground Floors, Drainage and Basements
    • 5.1 Substructure and ground-bearing floors
      • 5.1.1 Compliance
      • 5.1.2 Provision of information
      • 5.1.3 Transfer of loads
      • 5.1.4 Ground conditions
      • 5.1.5 Services and drainage
      • 5.1.6 Ground below fill
      • 5.1.7 Fill below floors
      • 5.1.8 Infill up to 600mm deep
      • 5.1.9 Materials used for fill
      • 5.1.10 Harmful or toxic materials
      • 5.1.11 Regulatory solutions
      • 5.1.12 Walls below the DPC
      • 5.1.13 Durability
      • 5.1.14 Mortar
      • 5.1.15 Wall ties
      • 5.1.16 Blinding
      • 5.1.17 Ground floor slab and concrete
      • 5.1.18 Laying the ground-bearing floor slab
      • 5.1.19 Damp proof course
      • 5.1.20 Damp proofing concrete floors
      • 5.1.21 Thermal insulation
      • 5.1.22 Installation of insulation
      • 5.1.23 Further information
    • 5.2 Suspended ground floors
      • 5.2.1 Compliance
      • 5.2.2 Provision of information
      • 5.2.3 Contaminants
      • 5.2.4 Proprietary systems
      • 5.2.5 Transfer of loads: concrete floors
      • 5.2.6 Reinforced concrete
      • 5.2.7 Construction of suspended concrete ground floors
      • 5.2.8 Transfer of loads: timber floors
      • 5.2.9 Thermal insulation and cold bridging
      • 5.2.10 Damp-proofing and ventilation
      • 5.2.11 Floor finishes
      • 5.2.12 Floor decking
    • 5.3 Drainage below ground
      • 5.3.1 Compliance
      • 5.3.2 Provision of information
      • 5.3.3 Preliminary work
      • 5.3.4 Foul and surface water disposal
      • 5.3.5 Drainage system performance
      • 5.3.6 Ground water drainage
      • 5.3.7 Design to avoid damage and blockages
      • 5.3.8 Durability
      • 5.3.9 Septic tanks and cesspools
      • 5.3.10 Septic tank outputs
      • 5.3.11 Surface water soakaways
      • 5.3.12 Component requirements
      • 5.3.13 Excavation
      • 5.3.14 Protection of pipework
      • 5.3.15 Laying pipework
      • 5.3.16 Protection of work
      • 5.3.17 Testing
    • 5.4 Waterproofing of basements and other below ground structures
      • 5.4.1 Compliance
      • 5.4.2 Provision of information
      • 5.4.3 Waterproofing
      • 5.4.4 Ground conditions
      • 5.4.5 Structural stability
      • 5.4.6 Design considerations
      • 5.4.7 Waterproofing systems
      • 5.4.8 Handling, storage and protection
  • 6 Superstructure (excluding roofs)
    • 6.1 External masonry walls
      • 6.1.1 Compliance
      • 6.1.2 Provision of information
      • 6.1.3 Structural design
      • 6.1.4 Fire resistance
      • 6.1.5 Acoustic resistance
      • 6.1.6 Exposure
      • 6.1.7 Thermal insulation
      • 6.1.8 Concrete blocks
      • 6.1.9 Bricks
      • 6.1.10 Stone masonry
      • 6.1.11 Construction of masonry walls
      • 6.1.12 Lintels
      • 6.1.13 Materials suitable for mortar
      • 6.1.14 Mortar
      • 6.1.15 Render
      • 6.1.16 Cladding
      • 6.1.17 DPCs and cavity trays
      • 6.1.18 Wall ties and bed joint reinforcements
      • 6.1.19 Handling materials
      • 6.1.20 Protection of the works during construction
    • 6.2 External timber framed walls
      • 6.2.1 Compliance
      • 6.2.2 Provision of information
      • 6.2.3 Design checking and certification
      • 6.2.4 Load-bearing walls
      • 6.2.5 Fixing the frame
      • 6.2.6 Nails and staples
      • 6.2.7 Sheathing
      • 6.2.8 Differential movement
      • 6.2.9 Fire resistance
      • 6.2.10 Protection from moisture
      • 6.2.11 Timber preservation
      • 6.2.12 Vapour control layers
      • 6.2.13 Breather membranes
      • 6.2.14 Wall ties and fixings
      • 6.2.15 Insulation
    • 6.3 Internal walls
      • 6.3.1 Compliance
      • 6.3.2 Provision of information
      • 6.3.3 Supporting load-bearing internal walls
      • 6.3.4 Masonry walls
      • 6.3.5 Load-bearing timber walls
      • 6.3.6 Fire resistance
      • 6.3.7 Sound insulation
      • 6.3.8 Partitions: internal non load-bearing
      • 6.3.9 Construction of timber partitions
      • 6.3.10 Construction of steel framed partitions
      • 6.3.11 Construction of proprietary systems
      • 6.3.12 Plasterboard
      • 6.3.13 Damp-proof courses
      • 6.3.14 Components
    • 6.4 Timber and concrete upper floors
      • 6.4.1 Compliance
      • 6.4.2 Provision of information
      • 6.4.3 Upper floor design
      • 6.4.4 Fire spread
      • 6.4.5 Sound insulation
      • 6.4.6 In-situ concrete floors and concreting
      • 6.4.7 Precast concrete
      • 6.4.8 Timber joist spans
      • 6.4.9 Timber joists
      • 6.4.10 Construction of timber floors
      • 6.4.11 Joists supported by intermediate walls
      • 6.4.12 Joists connected to steel
      • 6.4.13 Joists into hangers
      • 6.4.14 Timber joist and restraint strap
      • 6.4.15 Strutting
      • 6.4.16 Joists and openings
      • 6.4.17 Multiple joists
      • 6.4.18 Notching and drilling
      • 6.4.19 Floor decking
      • 6.4.20 Floating floors or floors between homes
    • 6.5 Steelwork
      • 6.5.1 Compliance
      • 6.5.2 Design guidance
      • 6.5.3 Steel grade and coatings
      • 6.5.4 Installation and support
      • 6.5.5 Padstones
      • 6.5.6 Connections
      • 6.5.7 Examples
    • 6.6 Staircases
      • 6.6.1 Compliance
      • 6.6.2 Provision of information
      • 6.6.3 Fire precautions
      • 6.6.4 Lighting
      • 6.6.5 Glazing
      • 6.6.6 Structural design
      • 6.6.7 Headroom and width
      • 6.6.8 Design of steps
      • 6.6.9 Landings
      • 6.6.10 Guarding
      • 6.6.11 Handrails
      • 6.6.12 Staircases made from timber and wood-based products
      • 6.6.13 Concrete staircases
      • 6.6.14 Steel staircases
      • 6.6.15 Proprietary staircase units
      • 6.6.16 Protection
    • 6.7 Doors, windows and glazing
      • 6.7.1 Compliance
      • 6.7.2 Provision of information
      • 6.7.3 In-service performance
      • 6.7.4 Timber doors and windows
      • 6.7.5 Non-timber windows and doors
      • 6.7.6 Installation
      • 6.7.7 Glazing
      • 6.7.8 Security
      • 6.7.9 Ironmongery
      • 6.7.10 Material storage and protection
      • 6.7.11 Completed work
    • 6.8 Fireplaces, chimneys and flues
      • 6.8.1 Compliance
      • 6.8.2 Provision of information
      • 6.8.3 Solid fuel – fireplaces and hearths
      • 6.8.4 Solid fuel – combustion air
      • 6.8.5 Solid fuel – flue pipes
      • 6.8.6 Solid fuel – chimneys
      • 6.8.7 Solid fuel – outlets and terminals
      • 6.8.8 Gas – fireplaces and hearths
      • 6.8.9 Gas – combustion air
      • 6.8.10 Gas – flue pipes
      • 6.8.11 Gas – chimneys
      • 6.8.12 Gas – outlets and terminals
      • 6.8.13 Oil – fireplaces and hearths
      • 6.8.14 Oil – combustion air
      • 6.8.15 Oil – flue pipes
      • 6.8.16 Oil – chimneys
      • 6.8.17 Oil – outlets and terminals
      • 6.8.18 All – fireplaces and hearths
      • 6.8.19 All – fireplace surrounds
      • 6.8.20 All – flue pipes
      • 6.8.21 All – flue liners
      • 6.8.22 All – flues
      • 6.8.23 All – chimneys
      • 6.8.24 Masonry
      • 6.8.25 Mortar
      • 6.8.26 DPC
      • 6.8.27 Flashings
      • 6.8.28 Terminals
      • 6.8.29 Flue testing
      • 6.8.30 Further information
    • 6.9 Curtain walling and cladding
      • 6.9.1 Compliance
      • 6.9.2 Provision of information
      • 6.9.3 Certification
      • 6.9.4 Loads
      • 6.9.5 Support and fixings
      • 6.9.6 Durability
      • 6.9.7 Interfaces
      • 6.9.8 Insulation
      • 6.9.9 Damp proofing and vapour control
      • 6.9.10 Installation and tolerances
      • 6.9.11 Electrical continuity and earth bonding
      • 6.9.12 Maintenance
      • 6.9.13 Glazing, gaskets and sealants
      • 6.9.14 Cavity barriers and firestops
      • 6.9.15 Ventilation screens
      • 6.9.16 Handling and storage
      • 6.9.17 Curtain walling
      • 6.9.18 Rainscreen cladding
      • 6.9.19 Insulated render and brick slip cladding
    • 6.10 Light steel framed walls and floors
      • 6.10.1 Compliance
      • 6.10.2 Provision of information
      • 6.10.3 Structural certification
      • 6.10.4 Structural design of load-bearing floors and walls
      • 6.10.5 Structural design of infill walls
      • 6.10.6 Roofs
      • 6.10.7 Steel and fixings
      • 6.10.8 Detailing of steel joists
      • 6.10.9 Restraint
      • 6.10.10 Construction of load-bearing walls and external infill walls
      • 6.10.11 Interfaces with staircases
      • 6.10.12 Fixing floor decking and ceilings
      • 6.10.13 Other design issues
      • 6.10.14 Behaviour in relation to fire
      • 6.10.15 Acoustic performance
      • 6.10.16 Moisture control
      • 6.10.17 Insulation
      • 6.10.18 Vapour control layers
      • 6.10.19 Breather membranes
      • 6.10.20 Cladding, lining and sheathing boards
      • 6.10.21 Wall ties
      • 6.10.22 Services
      • 6.10.23 Further information
    • 6.11 Render
      • 6.11.1 Compliance
      • 6.11.2 Provision of information
      • 6.11.3 Weather conditions
      • 6.11.4 Backgrounds
      • 6.11.5 Accommodation of movement
      • 6.11.6 Mixes
      • 6.11.7 Detailing
      • 6.11.8 Render onto board backgrounds
      • 6.11.9 Finishes
  • 7 Roofs
    • 7.1 Flat roofs, terraces and balconies
      • 7.1.1 Compliance
      • 7.1.2 Provision of information
      • 7.1.3 Flat roof, terrace and balcony general design
      • 7.1.4 Drainage
      • 7.1.5 Flat roof, terrace and balcony structural design
      • 7.1.6 Timber structure and deck
      • 7.1.7 Concrete decks
      • 7.1.8 Profiled self-supporting metal decks
      • 7.1.9 Profiled self-supporting metal roofing
      • 7.1.10 Thermal insulation and vapour control
      • 7.1.11 Waterproofing layer and surface treatments
      • 7.1.12 Green and biodiverse (brown roofs) – including roof gardens
      • 7.1.13 Blue roofs
      • 7.1.14 Raised Podium
      • 7.1.15 Detailing of flat roofs
      • 7.1.16 Accessible thresholds and upstands
      • 7.1.17 Parapets and guarding to terraces and balconies
    • 7.2 Pitched roofs
      • 7.2.1 Compliance
      • 7.2.2 Provision of information
      • 7.2.3 Design of pitched roofs
      • 7.2.4 Protection of trusses
      • 7.2.5 Durability
      • 7.2.6 Wall plates
      • 7.2.7 Joints and connections
      • 7.2.8 Restraint
      • 7.2.9 Bracing for trussed rafter roofs
      • 7.2.10 Strutting for attic trusses and cut roofs that form a floor
      • 7.2.11 Support for equipment
      • 7.2.12 Access
      • 7.2.13 Dormer construction
      • 7.2.14 Underlay and sarking
      • 7.2.15 Ventilation, vapour control and insulation
      • 7.2.16 Firestopping and cavity barriers
      • 7.2.17 Battens
      • 7.2.18 Roof coverings
      • 7.2.19 Fixing tiles and slates
      • 7.2.20 Weathering details
      • 7.2.21 Valleys and hidden gutters
      • 7.2.22 Drainage
      • 7.2.23 Fascias and trim
      • 7.2.24 Spandrel panels in cold roofs
  • 8 Services
    • 8.1 Internal services
      • 8.1.1 Compliance
      • 8.1.2 Provision of information
      • 8.1.3 Water services and supply
      • 8.1.4 Cold water storage
      • 8.1.5 Hot water service
      • 8.1.6 Soil and waste systems
      • 8.1.7 Electrical services and installations
      • 8.1.8 Gas service installations
      • 8.1.9 Meters
      • 8.1.10 Space heating systems
      • 8.1.11 Installation
      • 8.1.12 Extract ducts
      • 8.1.13 Testing and commissioning
    • 8.2 Low or zero carbon technologies
      • 8.2.1 Compliance
      • 8.2.2 Provision of information
      • 8.2.3 Clean Air Act
      • 8.2.4 System design
      • 8.2.5 Access
      • 8.2.6 Handling, storage and protection
      • 8.2.7 Sequence of work
      • 8.2.8 Location
      • 8.2.9 Building integration
      • 8.2.10 Fixing
      • 8.2.11 Electrical installation requirements
      • 8.2.12 Pipes, insulation and protection from cold
      • 8.2.13 Ground collectors
      • 8.2.14 Fuel storage
      • 8.2.15 Safe discharge
      • 8.2.16 Testing and commissioning
      • 8.2.17 Handover requirements
      • 8.2.18 Further information
    • 8.3 Mechanical ventilation with heat recovery
      • 8.3.1 Compliance
      • 8.3.2 Provision of information
      • 8.3.3 Building integration
      • 8.3.4 Noise
      • 8.3.5 Design considerations
      • 8.3.6 Access and operation
      • 8.3.7 Ductwork
      • 8.3.8 Fixing and jointing of ductwork
      • 8.3.9 Commissioning and balancing
      • 8.3.10 Handover requirements
  • 9 Finishes
    • 9.1 A consistent approach to finishes
      • 9.1.1 Compliance
      • 9.1.2 External walls
      • 9.1.3 Internal walls and ceilings
      • 9.1.4 Doors and windows
      • 9.1.5 Floors
      • 9.1.6 Glazing
      • 9.1.7 Ceramic, concrete, terrazzo and similar tile finishes
      • 9.1.8 Fitted furniture
      • 9.1.9 Joint sealants
      • 9.1.10 Paint finishes
      • 9.1.11 Sanitary ware
      • 9.1.12 Other surfaces and components
      • 9.1.13 Pitched roof coverings
      • 9.1.14 Garages
      • 9.1.15 External works
    • 9.2 Wall and ceiling finishes
      • 9.2.1 Compliance
      • 9.2.2 Provision of information
      • 9.2.3 Plastering
      • 9.2.4 Dry lining
      • 9.2.5 Ceramic wall tiling
    • 9.3 Floor finishes
      • 9.3.1 Compliance
      • 9.3.2 Provision of information
      • 9.3.3 Insulation
      • 9.3.4 Screed
      • 9.3.5 Ceramic, concrete, terrazzo and similar tile finishes
      • 9.3.6 Wood finishes
      • 9.3.7 Flexible sheet and tile finishes
      • 9.3.8 Asphalt finishes
      • 9.3.9 Staircase finishes
    • 9.4 Finishes and fitments
      • 9.4.1 Compliance
      • 9.4.2 Provision of information
      • 9.4.3 General provisions – cupboards and fitments
      • 9.4.4 Finishings and internal trim
      • 9.4.5 Joinery
      • 9.4.6 Airing cupboards, cupboards, worktops and fitments
      • 9.4.7 Ironmongery, prefabricated items and other materials
      • 9.4.8 Protection and handover
    • 9.5 Painting and decorating
      • 9.5.1 Compliance
      • 9.5.2 Provision of information
      • 9.5.3 Storage
      • 9.5.4 Conditions for painting and decorating
      • 9.5.5 Timber
      • 9.5.6 Steel
      • 9.5.7 Walls
      • 9.5.8 Wallpapering
      • 9.5.9 Other surfaces
      • 9.5.10 Completed painting and decorating
  • 10 External works
    • 10.1 Garages
      • 10.1.1 Compliance
      • 10.1.2 Provision of information
      • 10.1.3 Garage foundations
      • 10.1.4 Garage floors
      • 10.1.5 Garage walls
      • 10.1.6 Resistance to fire spread
      • 10.1.7 Security
      • 10.1.8 Doors and windows
      • 10.1.9 Garage roofs
      • 10.1.10 Permanent prefabricated garages and carports
      • 10.1.11 Services
    • 10.2 Drives, paths and landscaping
      • 10.2.1 Compliance
      • 10.2.2 Provision of information
      • 10.2.3 Stability
      • 10.2.4 Freestanding walls and retaining structures
      • 10.2.5 Guarding and steps
      • 10.2.6 Drives, paths and landscaping
      • 10.2.7 Materials
      • 10.2.8 Garden areas within 3m of the home
      • 10.2.9 Garden areas
      • 10.2.10 Timber decking
      • 10.2.11 Landscaping
NHBC

External masonry walls

6.1
Also see:
Chapter 3.3
Chapter 6.2

6.1.16Cladding

Cladding shall satisfactorily resist the passage of moisture and be of the quality, type and dimensions required by the design. Issues to be taken into account include:

  1. masonry cladding to framed structures
  2. joints
  3. materials for cladding
  4. vertical tile or slate cladding
  5. stone veneer cladding.

This clause is for low rise applications where the masonry is used directly for weather tightness or used in conjunction with other vertical cladding for weather tightness. Chapter 6.9 covers curtain walling and other structural cladding.

Refer to the Robust Details Handbook to check compatibility of lightweight external treatments.

  • flexible movement joints should be provided at the underside of each horizontal support member
  • the masonry outer leaf should have a minimum two-thirds of its width supported securely by the concrete frame or a metal angle. See diagram (water exclusion detail not included for clarity)
  • vertical movement joints should be provided at corners
  • the inner leaf should be adequately tied to the structural frame.

Masonry cladding to framed structures

Allowance should be made for differential movement between cladding and the frame. The following precautions should be taken to prevent buckling and fracturing of masonry panels:

  • flexible movement joints should be provided at the underside of each horizontal support member
  • the masonry outer leaf should have a minimum two-thirds of its width supported securely by the concrete frame or a metal angle. See diagram (water exclusion detail not included for clarity)
  • vertical movement joints should be provided at corners
  • the inner leaf should be adequately tied to the structural frame

Joints

Joints between claddings and adjacent materials should:

  • be detailed to be watertight under the particular exposure conditions of the site
  • have provision for differential movement, where necessary.

Materials for cladding

Table 8: Materials for cladding

ComponentRequirementNotes
Tiles and slatesBS EN 1304, BS EN 490,
BS EN 12326-1
Clay tiles for tile hanging, concrete tiles for tile hanging, slates for vertical slating.
Timber boardingBS EN 942Timber should:
■ comply with, and be at least J50
■ be a naturally durable species or pretreated with preservative.
BattensBattens should be:
■ of the size specified in the design
■ pretreated with preservative.
Proprietary cladding systems
Technical Requirement R3

Timber cladding should be in accordance with Chapter 3.3 ‘Timber preservation (natural solid timber)’

Vertical tile or slate cladding

Vertical tile or slate cladding should:

  • have each tile or slate fixed with two nails
  • be fixed using aluminium, copper or silicon bronze nails
  • be finished with an under-course and tilting batten at the bottom edges.

Stone veneer cladding systems

Stone veneer cladding systems should be in accordance with:

  • BS 8298 when mechanically fixed
  • technical Requirement R3 when adhesive fixed
  • chapter 6.9 when used as a brick slip / rainscreen system.

Builders' Book - An illustrated guide to building energy efficient homes

Builders' Book - An introductory guide to thermal bridging in homes

NHBC 3D Model - VDPC to flat/mono pitched roofs

NHBC Animation - Stepped cavity tray installation process

NHBC External Walls Seminar - Installation of preformed cavity trays

NHBC Foundation - The use of lime-based mortars in new build

NHBC Risk Guide - Cavity trays/DPCs - Superstucture

NHBC Risk Guide - Fire (Blocks)

NHBC Risk Guide - Parapets and copings

Technical Extra 04 - Cast stone. UKSCA Technical Manaual

Technical Extra 04 - Good construction practice versus requirements for accessible thresholds

Technical Extra 06 - Residual cavities

Technical Extra 10 - Waste water heat recovery (WWHR)

Technical Extra 11 - Low-strength factory-made mortar

Technical Extra 14 - Fixing of copings

Technical Extra 15 - Focus on cavity trays and DPCs

Technical Extra 15 - Movement joints in external walls

Technical Extra 17 - Design and use of autoclaved aerated concrete masonry units

Technical Extra 17 - Provision of weep holes and weep vents in masonry walls

Technical Extra 19 - Avoiding common fire safety issues

Technical Extra 21 - Focusing on correct stepped cavity tray installation

Technical Guidance - Air bricks to underfloor voids - relationship to ground levels

Technical Guidance - Bedding lintels

Technical Guidance - Block bonding

Technical Guidance - Cavity trays to bay windows

Technical Guidance - Cavity trays to openings with soldier courses or stone lintels

Technical Guidance - Concrete fill in a cavity wall

Technical Guidance - Damp proofing around meter boxes

Technical Guidance - Ducts/flues through core drilled holes

Technical Guidance - Face fixed restraint straps to gable walls in dwellings

Technical Guidance - Forming stop ends to cavity trays

Technical Guidance - Installation of lead flashings

Technical Guidance - Lintels over wide openings in external walls

Technical Guidance - Lintels to walls over drive-through access to houses (England & Wales only)

Technical Guidance - Lintels within coastal sites

Technical Guidance - Masonry bed joint reinforcement

Technical Guidance - Movement joints below dpc

Technical Guidance - Movement joints in clay brick masonry

Technical Guidance - Movement joints in masonry walls

Technical Guidance - Movement joints in masonry. Timber framed external walls

Technical Guidance - New home built alongside existing home

Technical Guidance - Partial fill insulation to gable walls

Technical Guidance - Restraint straps to gable walls of garages

Technical Guidance - Small pediment gable walls

Technical Guidance - Thin joint mortars

Technical Guidance - Toothing of brickwork

Technical Guidance - Wall ties at jambs with full fill cavity board insulation

Technical Guidance - Walls ties at movement joints

Technical Training - External Walls

NHBC Standards 2022 Complete

NHBC Standards 2022 Chapter 6

Share this page via email

NHBC Standards 2022

3D Supplementary Resource Download Share Print

NHBC Standards 2022