Appendices

Appendix 1: Site inspection checklist

This is a site inspection checklist to improve the construction quality of new homes to meet their intended performance.

It should be adapted to suit the project construction type and programme. Record all findings and photograph items that will affect build quality and energy performance in operation. Obtain copy of Part L SAP, EPC, Part F DVCG checklist, airtest and all commissioning certificates as a record of dwelling performance.

Development name:

Date:

General site conditions

A review of the site presentation including tidiness, recycling and waste segregation, working room (adequate scaffold, etc.), availability of information, toolbox talks and posters, quality inspection regime, materials protection and storage, etc.

No Inspection item Findings on site Photo and drawing reference 1 Site presentation and tidiness     2 Materials compound and storage     3 Waste segregation and recycling     4 Working room including adequate scaffold provision     5 Availability of design information     6 Security and changing, office facilities     7 Energy-efficient site office and operations?     8 Insulation, blocks, windows and other thermally sensitive materials stored correctly for performance?     9 Is there a design guardian on site with quality management role, e.g. site architect or clerk of works?     10 Is there an energy champion on site checking airtightness, insulation and services?     11 Weather conditions and location (city, suburb, rural)     12 Other comments    

Build Stage 1: Substructure floor

Inspection from the top of the concrete foundation to the top of the finished floor (beam and block, concrete slab, etc.); including insulation and screed where this is laid on top of the floor. Inspection to be conducted prior to screed pour and post screed pour.

Description of construction:

No Inspection item Findings on site Photo and drawing reference 1 Are the blocks/structural elements of the floor the correct thermal conductivity?     2 Is the installation of the floor to manufacturer guidelines and free of debris, mortar snots or excess material?     3 Has the correct insulation been installed in the floor and wall below DPC level (type and thickness)?     4 Has the insulation been installed in tricky to reach areas like behind cavity trays, subfloor vents and under level thresholds?     5 Has the insulation been installed continuously to the correct depth around the whole perimeter?     6 Are there any significant cold bridges not accounted for in the design?     7 Has all insulation generally been fitted tight to the substrate with no gaps between boards?     8 Has the correct perimeter floor insulation upstand (type andand thickness) been installed?     9 Has the perimeter floor insulation been fitted with tight butt joints between boards and against perimeter blockwork?     10 Have incoming services been suitably insulated and sealed at floor level?     11 Do the threshold junctions follow the detail; consider maintaining cavity width, cavity closer, insulation butted up to underside of closer?     12 Has the screed ‘bridged’ the perimeter insulation or thresholds in any locations?     13 Has the floor been overlaid with a min 500g DPM separating layer to prevent screed bleeding through joints?     14 Any other performance gap issues? Any other comments?    

Build Stage 2: Ground floor to roof

Inspection from the top of the ground floor screed to top of external wall (sole plate level) not including roof structure.

Description of construction:

No Inspection item Findings on site Photo and drawing reference 1 External wall block or stud type (thickness and conductivity)     2 External wall insulation type (thickness and conductivity) as design?     3 External wall insulation installation quality; tight to substrate and board joints lightly butted / taped?     4 Party wall block or stud type (thickness, density and conductivity) as design?     5 Party wall insulation type (thickness and conductivity) as design?     6 Party wall insulation installation quality; fully filling cavity and joints tightly butted?     7 Party wall edge seals (type, position, thickness) as design?     8 Quality of mortar joints or timber connections?     9 Cleanliness of cavity/wall ties     10 Is cavity or timber wall of consistent width and in line with design?     11 Are floor joists on hangers that are tightly fitted with joints fully pointed up?     12 If floor joists built into wall are they tightly fitted with joints fully pointed up and then mastic sealed?     13 If timber cassette floor is supported into wall, is this junction insulated as design?     14 Have cavity closers been installed in line with the specificatioh; do they fit the cavity tightly?     15 Is lintel installed as the design?    

Build Stage 4: First fix

Inspection from weathertight to completion of first fix.

Description of construction:

No Inspection item Findings on site Photo and drawing reference 1 Are any internal movement joints sealed fully with airtight expanding barriers (compriband)?     2 Has gap between staircase string and wall been packed out and sealed?     3 Has ventilation ducting been installed in line with design layout (type, location, number of bends)?     4 Have service penetrations in the floor slab and wall been sealed airtight?     5 Have any ‘other’ holes in the structure been formed and sealed?     6 Have all heating controls been first fixed (programmers, weather compensator, eta.)?     7 Has pipework (that will become concealed) been insulated to site specification and DHCG?     8 Does the heating distribution network follow the basic principles of the design and manufacturer guidelines?     9 Have pattress boxes on timber construction been sealed with rubber grommets?     10 Any other performance gaps or quality issues?    

Build Stage 5: Drylined or plastered

Inspection from completion of first fix to fully skimmed, or tape and jointed, or fully plastered.

Description of construction:

No Inspection item Findings on site Photo and drawing reference 1 If external temp. less than 5 degrees is heating provided?     2 Is all timber max. 20% moisture content prior to drylining? (BS8212)     3 Is roof insulation in line with design; depth and type?     4 Has roof insulation been installed cross-lapped, tightly butted to timber elements and between individual rolls?     5 Has roof insulation been installed correctly at eaves and gable perimeters?     6 Is there full depth of insulation at eaves?     7 Where ventilation ducts or other plant installed in roof space has insulation thickness been maintained throughout?     8 Is the loft hatch in line with design; opening direction, U-value or insulation thickness/type?     9 Prior to drylining have all penetrations/gaps been foam filled to full depth?     10 Are ceiling boards staggered and have boards over door openings been extended beyond jamb positions?     11 Has the correct type and thickness of insulated plasterboard been used?     12 Has a continuous ribbon of adhesive been applied around all openings, along the top and bottom and at internal and external corners of walls?     13 Has a continuous ribbon of adhesive been applied over all service chases (best practice)?     14 Have all penetrations been tightly sealed?     15 Have all ventilation grille positions been maintained during drylining i.e. ducts not damaged or moved?     16 Has any insulation or first fix work been disturbed by drylining, that may impact on performance?     17 Any other performance gaps or quality issues?    

Build Stage 6: Second fixed

Inspection from completion of drylining to completion of second fix joinery, plumbing and electrical work

Description of construction:

No Inspection item Findings on site Photo and drawing reference 1 Has boiler been installed as specification, SAP and design?     2 Is the hot water storage cylinder (HSWC) or thermal store in line with the design and SAP (make, model, size)?     3 Are programmable room stats (or programmer and room stat) make and model in line with the design and SAP?     4 Has boiler pipework been insulated to site specification and DHCG - min. 25 mm pipe insulation?     5 Does PV panel array meet design assumptions like size, number, angle, specification, KwP, overshading?     6 Is PV inverter suitably sized for array?     7 Does solar hot water (SHW) system meet design assumptions and specification?     8 Is SHW pipework fully insulated and correctly fitted to cylinder?     9 Have ventilation fans (make and model) been installed in line with design?     10 Has ventilation ductwork been installed as design and specification? Rigid, insulated, length?     11 Have recessed downlights been fitted appropriately to the ceiling to maintain insulation thickness and airtightness whilst preventing overheating / burn out of lights?     12 Have all gaps been fully sealed in wet-rooms and kitchens (under bath, shower, boxings, etc.)?    

Build Stage 7: Finals, commissioning and handover

Inspection from completion of second fix to completion of dwelling including test and commission stage.

Description of construction:

No Inspection item Findings on site Photo and drawing reference 1 Have any ventilation grilles been moved or adjusted during decoration?     2 Have ventilation ducts and terminals been sealed to prevent dust entering the unit and ducts during construction?     3 Are all kitchen appliances fitted in line with specification, e.g. A rated?     4 Have all doors been trimmed to achieve a clear gap underneath of 10 mm; 25 mm where no floor covering provided?     5 Has the room stat been fitted a minimum of 1m away from any radiator and ideally on opposite wall?     6 Have any sales extras been fitted that were not included in the design or specification but would impact on SAP, e.g. fireplace, downlighters, secondary heating?     7 Are any shrinkage cracks visible?     8 Have the DVCG commissioning sheets been completed for the ventilation?     9 Are ventilation flow rates correct on commissioning sheet?     10 For MEV and MVHR check fan power; is it set at, or hear to, 100%? If so record approx, figure and check designed power rating with ventilation designer. Also check and note if fan is noticeably noisy (should not be above 30db).     11 Have filters to MVHR units been replaced or cleaned following the construction stage?     12 Have all duct terminals/grilles been locked into position using lock nuts?     13 Has heating system been commissioned using manufacturer commissioning reguiremehts?    
..................Content has been hidden....................

You can't read the all page of ebook, please click here login for view all page.
Reset
13.58.40.4