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Free inspection and checklist templates for UK construction sites

186 ready-made checklists, inspections, permits, registers and QA records, each written from the law or guidance it follows. Read every question here, then add it to a project in Sitro and fill it on a phone.

Building Regulations and handover

  • Airtightness test record: Records a dwelling's air permeability test at 50 Pa against its design figure, with the tester's report and the notice to building control.
  • Building control inspection log: Keeps the record of building control notices and visits for a plot or building: the stage, when it was notified, the inspector, the result and anything to put right.
  • Golden thread information check (higher-risk buildings): Checks a higher-risk building's golden thread of information is kept as the Building Safety Act asks: digital, kept up to date, changes recorded through change control, and the occurrences reported.
  • Handover pack check: Checks everything the client must receive is in the handover pack: the health and safety file, O&M manuals, certificates and test results, warranties, and the fire safety information regulation 38 asks for.
  • Overheating (Part O) measures check: Checks a home has the overheating measures in its approved design (simplified method or dynamic model): glazing areas, opening windows and free areas, shading, and openings usable at night.
  • Part F ventilation commissioning: Records the commissioning of a dwelling's mechanical ventilation: each terminal's measured air flow against its design rate, the commissioning sheet, and the notice to building control.
  • Part M accessibility check: Checks a dwelling is built to the access standard it was approved to (M4(1), M4(2) or M4(3)): approach, entrance, door and hall widths, switches and sockets, WC.
  • Pre-completion sound test record: Records pre-completion sound testing of separating walls and floors against Part E, with the tester's report and the notice to building control.

Concrete

  • Concrete pour record: Records a pour: the mix ordered and delivered, every ticket, slump and temperature checks, test cubes taken, the times, and curing.
  • Concrete pre-pour check: Checks a pour is ready before concrete is placed: formwork, reinforcement, cover and fixings.
  • Post-pour inspection: The check after formwork is struck: surface finish, honeycombing and cracks, dimensions and levels, cast-ins where they should be, and repairs needed.
  • Reinforcement inspection: The check of reinforcement before a pour: bar sizes and spacing to the schedule, laps, cover and spacers, tying, cast-ins and cleanliness.

Curtain walling and glazing

Drylining and interiors

  • Drylining and partition QA: The check of partitions and drylining: the system built as specified, stud centres, noggins for fixings, boards and screws, acoustic insulation and sealing, and the finish.

Electrical

  • Electrical certificate received: Records the certificate handed over for electrical work: which kind, its reference, the installer and scheme, notification for dwellings (Part P), and the certificate itself.
  • Electrical first fix check: The check of electrical first fix before boarding: cables in safe zones or protected, the right cable sizes, back boxes at the right heights, fire-stopping where cables cross walls, and supports.

Fire safety

  • Escape routes and emergency lighting check: Checks the ways out of the site and the building under construction are clear, signed and lit, and the alarm can be heard everywhere.
  • Fire extinguisher register: Every extinguisher on site: where it is, its type, serial number and size, its yearly service and the monthly visual check. Overdue services show at a glance.
  • Site fire risk assessment review: Reviews the site's fire risk assessment as the building grows and the work changes: sources of ignition, fuel, people at risk, the means of escape and the controls.

Fire stopping and fire doors

  • Cavity barrier and fire break inspection: Checks cavity barriers and fire breaks in walls, floors and roof voids: in every place the drawings show, the right product, fixed, and tight to the cavity with no gaps.
  • Compartmentation inspection: The check of a compartment wall or floor before it is hidden: built to the full height, its head detail, every penetration sealed, cavity barriers and dampers in place, with photos for the golden thread.
  • Fire door inspection: The inspection of a fire door and its frame: certification, gaps, seals, hinges, closer, glazing, signage and damage. Fits the checks the Fire Safety (England) Regulations 2022 ask of a responsible person in occupation.
  • Fire door installation check: Checks a fire door is installed as its certificate allows: the certified set, frame fixed and fire-stopped, gaps, ironmongery that is part of the test, seals, closer and signage.
  • Fire stopping inspection: Records each fire-stopping seal with a photo before it is hidden, as the golden thread of information expects.
  • Fire-rated partition check: Checks a fire-rated partition is the tested system: boards, layers and screws, full height to the soffit, the head detail, and every penetration sealed.

Floors and finishes

  • Screed check: The check of a screed: thickness, surface regularity against its class, cracking and hollowness, curing and drying, and moisture before floor finishes go down.
  • Tiling QA: The check of wall and floor tiling: the substrate ready, adhesive coverage, joints and lines, levels and lippage, movement joints and grouting, tanking in wet areas.

Groundworks and drainage

  • Above-ground drainage test (soil and waste): Records the air test of soil and waste pipework above ground before it is hidden: the system, the test pressure held, the result and who witnessed it.
  • Drainage CCTV survey record: Keeps a drainage CCTV survey: the runs surveyed, the report and video attached, the defects graded in it and what is done about them.
  • Drainage pipe laying and bedding inspection: The quality check of a drain run before it is covered: the bed, line and gradient, joints, the pipe's surround and protection, and photos as it lies.
  • Drainage test record: Records an air or water test of a drain run before it is backfilled.
  • Ducts and service trench check: The quality check of service ducts before backfill: the right ducts in the right places, depths and separation, draw ropes, marker tape and photos as laid.
  • Excavation inspection: The excavation inspection report CDM 2015 requires: at the start of each shift, after an event affecting its stability, and after any accidental fall of rock or earth.
  • Foundation excavation inspection: The check of a foundation trench or base before concrete: dimensions and depth, the bearing stratum, soft spots, roots, water, and building control's acceptance.
  • Underground services: CAT and Genny scan before digging: Checks underground services are found before digging: plans obtained, the area scanned in every mode by a trained person, services marked, and hand-dug trial holes near them.

Health and safety

  • Asbestos survey check before work: Checks, before work disturbs the building, that a refurbishment and demolition survey covers the area, its findings are known to the people doing the work, and any asbestos is removed or the area ruled out.
  • Client or principal designer site visit: Records a visit by the client, the principal designer or their representative: who came, what they looked at and any points raised.
  • Construction phase plan review: Checks the construction phase plan still matches the work: its arrangements, site rules and the risks it names, and records what was changed.
  • COSHH assessment: The assessment of a substance hazardous to health used on site, covering everything COSHH regulation 6(2) says it must consider, the controls chosen and when it will be reviewed.
  • COSHH substances register: Every hazardous substance on site: product, supplier, what it is used for, where it is stored, its hazards, its safety data sheet and its COSHH assessment with the date it is reviewed.
  • Daily site briefing: The morning briefing: today's work, its hazards and controls, changes on site, and everyone briefed signing.
  • Dust and silica control check: Checks dust from cutting, drilling, chasing or sanding is controlled: on-tool extraction or water at the tool, the right respirator fitted and face-fit tested, and the area kept clean without dry sweeping.
  • Dynamic risk assessment for a changed task: Records a change to how a task is done on the day: what changed, the new hazards, the extra controls and who agreed it.
  • Hand-arm vibration: daily exposure: Adds up a person's exposure from each vibrating tool used in the day (points = 2 × vibration² × hours) against the action value (100) and the limit (400), and says what must happen.
  • Hazard report: Reports a hazard seen on site — where it is, a photo, and whether it was made safe.
  • Health surveillance referral record: Records a worker sent for health surveillance because of their exposure (vibration, noise, dust, solvents, lead), and the fitness outcome. Medical details stay with the occupational health provider; this keeps only the outcome. Private to managers.
  • Incident report: Records an accident or incident as soon as it happens. Kept private to the project's managers and the person reporting it, and shows RIDDOR's reporting deadlines.
  • Lead and hazardous substance exposure check: Checks the controls for work with lead: the assessment, extraction or wet methods, respirators, no eating or smoking in the area, washing facilities and medical surveillance where exposure is significant.
  • Manual handling assessment: The assessment of a lifting, carrying, pushing or pulling task that can't be avoided: the task, the load, the place and the person (the factors in Schedule 1), and how the risk is cut.
  • Monthly health and safety audit: A monthly look at how health and safety is managed on site: the plan, documents, competence, inspections and the site itself.
  • Near miss report: Records something that could have hurt someone but didn't, so it can be put right before it does.
  • Noise assessment: The assessment of a task's noise: who is exposed, for how long, the levels against the 80, 85 and 87 dB(A) action values and limit, how the noise is cut at source, and the hearing protection and zones in place.
  • Noise: daily exposure: Works out a person's daily noise exposure from each noisy activity's level and time against 80, 85 and 87 dB(A), and says what must happen.
  • Point of work risk assessment (Take 5): A quick check by the people doing the work, before they start: the task, what could hurt them here and now, and that it is safe to go ahead.
  • PPE inspection: Checks the PPE people are using is right for the work, fits, is in good condition and is stored properly.
  • PPE issue record: Records PPE given to a person: what, its size, when, and that they were shown how to use and look after it.
  • RAMS review and acceptance: Records the review of a risk assessment and method statement before the work starts: whether it fits the site and the task, and whether it is accepted.
  • RPE face fit test record: Records a face fit test for a tight-fitting respirator: the person, the exact mask (make, model, size), the test method, the result and the tester.
  • Subcontractor health and safety check: Checks a subcontractor has what they need before they start: competence, risk assessments and method statements, insurance and their people's cards.
  • Toolbox talk: Records a toolbox talk: what was covered, who gave it, and everyone who attended with their signature.
  • Weekly fire point check: Checks each fire point and the alarm, as the site's fire plan sets out.
  • Weekly site safety inspection: The site manager's weekly walk round of the site's main risks.
  • Young person or new starter risk assessment: The risk assessment for someone under 18 (or new to site) before they start: their lack of experience, the work they may and may not do, and their supervision.

Housebuilding

  • Part L photographic evidence: The photographs Approved Document L asks for at each stage of a new dwelling, taken with the camera so each carries its date and place.
  • Pre-plaster inspection: Checks first fix and the structure before walls and ceilings are closed in.

Incidents

  • Asbestos unexpected find stop-work record: Records work stopped when a material that might hold asbestos is found: where, who was near, how the area was closed off, who was told, the sample result and when work restarted.
  • RIDDOR report record: The record RIDDOR 2013 requires of a reportable incident (and of an over-3-day injury): when and how it was reported, when and where it happened, who was involved and what happened, with the HSE reference. Kept at least 3 years.
  • Witness statement: A witness's own account of an incident: what they saw and heard, where they were, in their words, signed and dated. Facts only, no blame. Kept private to managers and the person filling it.

Lifting

  • Chain block and lever hoist pre-use check: The user's check of a chain block or lever hoist before use: marked with its safe working load, chain and hooks undamaged, safety catches, the brake holding, and examined in the last 6 months.
  • Crane thorough examination record: Keeps the thorough examination of a crane on site: the competent person's report attached, any defects and what was done about them, and when the next is due. The equipment isn't used past that date.
  • Excavator lifting duties check: The check before an excavator lifts a load: it is set up for lifting, with its check valves, rated capacity indicator, lifting point and quick hitch all right, and its thorough examination in date.
  • Lift plan: The plan for a lifting operation, made by the appointed person: the load, the crane and accessories, where it stands, the ground, the people, the weather limits and how the lift is controlled.
  • Lifting accessories pre-use check: The check of slings, chains, shackles and hooks before a lift: marked with their safe working load, in date, and free of damage.
  • Lifting accessories register: Slings, chains, shackles, eyebolts and hooks in one list: each item's identity, type, working load limit, colour code and its six-monthly examination dates. Overdue items show at a glance.
  • Lifting appointments record: Records who is appointed for the lifting operations: the appointed person who plans, the lift supervisor, the crane operator and the slingers and signallers, with their qualifications.
  • Lifting equipment: thorough examination record: Keeps the competent person's report of a thorough examination, with the details LOLER requires and the date the next one is due.
  • Lifting equipment: weekly check: The weekly in-service check between thorough examinations, by a competent person on site.
  • LOLER lifting equipment register: Every piece of lifting equipment on site in one list: what it is, its identity and safe working load, where it is, who owns it, its last thorough examination and when the next is due, with the report. Overdue items show at a glance.
  • Lorry loader (HIAB) pre-use check: The operator's check of a lorry-mounted crane before use: stabilisers, controls, rated capacity indicator, hook and its thorough examination.
  • Scaffold hoist and ladder hoist check: The user's daily check of a scaffold or ladder hoist: its fixing to the scaffold, the rope and hook, the limit switch, the load gate and the landing protection.
  • Telehandler lifting attachment and man basket check: The check before a telehandler is used with a lifting attachment or a basket for people: the attachment is the right one, recognised by the machine, locked on and in date.
  • Vacuum lifter thorough examination record: Keeps the thorough examination of a vacuum lifter (glass or slab) on site: the competent person's report attached, any defects and what was done about them, and when the next is due. The equipment isn't used past that date.
  • Webbing sling and roundsling check: The user's check of a web sling or roundsling before use: label readable with its working load limit, no cuts, burns, chemical damage or broken stitching, and examined in the last 6 months.

Masonry

  • Brickwork and blockwork QA: The check of masonry as it goes up: the right bricks and mortar, bond, gauge and perpends, plumb and line, DPC, cavity clean and insulation tight.
  • Wall tie and cavity tray check: Checks wall ties at their spacings (closer at openings and movement joints), sloping down to the outside, and cavity trays with stop ends and weep holes over openings.

Mechanical and plumbing

  • Commissioning record: Records the commissioning of any building system: the system, the method and values set, the commissioning sheets, witnesses and anything left open.
  • Pipework pressure test (water): Records a hydraulic pressure test of water pipework before it is hidden: the section, test pressure and duration set by the specification, the drop, and the result.

MEWPs, mast climbers and hoists

  • Hoist daily check: The check before a passenger or goods hoist is used each day: base enclosure, landing gates and their interlocks, controls, emergency stop and the mast ties.
  • Hoist thorough examination record: Keeps the thorough examination of a passenger or goods hoist on site: the competent person's report attached, any defects and what was done about them, and when the next is due. The equipment isn't used past that date.
  • Mast climbing work platform thorough examination record: Keeps the thorough examination of a mast climbing work platform on site: the competent person's report attached, any defects and what was done about them, and when the next is due. The equipment isn't used past that date.
  • MEWP thorough examination record: Keeps the thorough examination of a MEWP on site: the competent person's report attached, any defects and what was done about them, and when the next is due. The equipment isn't used past that date.
  • MEWP weekly inspection: The weekly inspection of a mobile elevating work platform (scissor lift, cherry picker, boom): controls, emergency lowering, platform, guard rails, tyres, outriggers and its thorough examination in date.
  • Mobile boom (cherry picker) pre-use check: The operator's check of a self-propelled boom before use: boom, jib and slew, harness anchors, ground and platform controls, overload and emergency lowering.
  • Scissor lift pre-use check: The operator's check of a scissor lift before use: pothole guards, tilt alarm, platform gates and rails, emergency lowering and the ground it will work on.
  • Static boom pre-use check: The operator's check of a static or trailer-mounted boom before use: outriggers, spreader plates, levelling, interlocks and the platform.

Permits

  • Hot works permit: Asks for, issues and closes a permit for hot work; it stays open for at least 60 minutes of fire watch after the work stops.

Plant

  • 360 excavator (over 6 t) pre-use check: The operator's daily check of a 360 excavator over 6 t: hitch, slew, tracks, hydraulics, isolator, cameras and exclusion zone.
  • Concrete pump (boom) set-up and pre-use check: The check when a boom pump is set up: outriggers on firm ground with pads, the boom and pipeline clamps, the end hose, the exclusion zone and the hand signals agreed.
  • Dumper pre-use check: The operator's daily check of a site dumper: the roll-over protection and seat belt, brakes, steering, skip and its lock.
  • Excavator pre-use check: The operator's daily check of an excavator: the bucket and quick hitch, tracks, hydraulics, safety devices and the cab.
  • Forklift pre-use check: The operator's daily check of a forklift truck: forks, mast, chains, overhead guard, seat belt, brakes and steering.
  • Forklift thorough examination record: Keeps the thorough examination of a forklift truck on site: the competent person's report attached, any defects and what was done about them, and when the next is due. The equipment isn't used past that date.
  • Fuel bowser and fuel storage check: Checks fuel tanks and bowsers are bunded, secure, not leaking, with spill kits to hand, as the oil storage rules require.
  • Lighting tower check: The weekly check of a lighting tower: mast and winch, outriggers, lamps, the engine, fuel and its placing away from traffic and edges.
  • Mini or midi excavator pre-use check: The operator's daily check of a mini or midi excavator: hitch, canopy and seat belt, blade, tracks, isolator and the travel lock.
  • Piling rig pre-use check: The operator's daily check of a piling rig: the working platform, mast and its locks, ropes, auger guarding and exclusion zone.
  • Plant operator competence check: Checks an operator is trained and competent for the machine, has been shown this model, and is authorised to use it on this site.
  • Plant pre-use check: The operator's daily check before using a machine.
  • Plant weekly inspection: A competent person's weekly inspection of any machine, beyond the operator's daily check: structure, safety devices, guards, service and the machine's records.
  • PUWER work equipment register: The site's work equipment and plant in one list: identity, location, owner, last inspection and when the next is due, its service and whether its operators need training. Overdue items show at a glance.
  • Roller pre-use check: The operator's daily check of a roller: roll-over protection and seat belt, drums and scrapers, vibration controls and brakes.
  • Rotating telehandler pre-use check: The operator's daily check of a rotating telehandler: outriggers, slew, boom, the attachment and its recognition, load charts and limiters.
  • Rough-terrain forklift pre-use check: The operator's daily check of a rough-terrain masted forklift: mast and chains, forks, tyres, the cab and restraint, and the ground it will work on.
  • Skid steer and compact plant pre-use check: The operator's daily check of a skid steer or other compact plant: the safety bar and interlocks, attachment lock, cab and controls.
  • Swivel or high-tip dumper pre-use check: The operator's daily check of a swivel or high-tip dumper: roll-over protection and seat belt, the skip's swivel and lift, its locks, and the view ahead.
  • Telehandler attachment change record: Records a telehandler's attachment change: which attachment, that it's approved for the machine, locked on, and the matching load chart selected.
  • Telehandler pre-use check: The operator's daily check of a telescopic handler: forks or attachment, boom, rated capacity indicator, stabilisers, seat belt and brakes.
  • Tracked dumper or power barrow pre-use check: The user's daily check of a tracked dumper or power barrow: tracks, controls returning to neutral, the dead-man control, the skip and its stops.
  • Wheeled excavator pre-use check: The operator's daily check of a wheeled excavator: hitch, outriggers or blade, axle lock, tyres, road lights and the travel lock.

Quality

  • Area handover between trades: Records an area passed from one trade to the next: complete, clean, inspected, damage noted, so the next trade starts from an agreed state.
  • Completion and practical completion inspection: The inspection for practical completion: the work complete but for minor items, safe to use, certificates and the handover pack in, snags listed with dates, and who attended.
  • Defect and snag report: Lists defects found on a walk round: each with where, what, a photo, who must fix it and by when; each fail becomes a task for that company.
  • Non-conformance report: Records work that doesn't meet the specification: what and where, the requirement it misses, the cause, the fix agreed and who approved it, and close-out with evidence.

Roofing

  • Felt, batten and tiling QA: The check of a pitched roof: underlay laps and support, batten grade and fixing, every tile or slate mechanically fixed as BS 5534 requires, ridges and hips dry-fixed or bedded and fixed, and the ventilation.
  • Flat roof membrane installation and leak test: The check of a flat roof: deck and falls, vapour control layer and insulation, membrane laps and details at upstands and outlets, then a flood or electronic leak test.

Scaffolding and access

  • Aluminium mobile tower build and handover inspection: The inspection of an aluminium tower after it is built or moved, before it is handed over for use: built to the maker's instructions by a trained person, braced, stabilised, locked and tagged.
  • Combination or telescopic ladder pre-use check: The user's check of a combination or telescopic ladder before use: every lock and hinge, the rungs and stiles, and the right set-up for the way it will be used.
  • Edge protection inspection: Checks temporary edge protection at slab edges, roofs, stairs and openings is complete, fixed and at the right height, with nothing removed.
  • Harness and lanyard pre-use check: The wearer's check of a fall arrest or restraint harness and lanyard before use: webbing, stitching, buckles, connectors and the energy absorber, and its detailed inspection in date.
  • Harness and lanyard register: Every harness, lanyard and fall arrest block: its serial number, type, date of manufacture, who it is issued to, its detailed inspections and its condition. Overdue items show at a glance.
  • Ladder and stepladder pre-use check: The check before a ladder or stepladder is used: that it is right for a short, simple job and that its feet, stiles, rungs and locks are sound.
  • Ladder and stepladder register: Every ladder and stepladder on site: its identity, type and BS EN 131 class, where it is kept, its detailed inspections and its condition. Overdue items show at a glance.
  • Leaning ladder pre-use and tie check: The user's check of a leaning ladder before use, and how it is secured: tied, footed or with a stability device, at 1 in 4, reaching 1 m above where you step off.
  • MEWP rescue plan: How someone would be rescued from a MEWP platform (someone ill, trapped or the machine failed at height) quickly and safely, planned before the work starts: who does it, with what, and how the emergency services would be called.
  • Mobile tower inspection: The inspection report the Work at Height Regulations require for a mobile access tower: after it is put up, moved or altered, after anything that could affect it, and at least every 7 days while it stands.
  • Open edge check during frame and floors: The daily check while the frame and floors are being built: every leading or open edge protected, nets or other fall protection in place, and exclusion zones below.
  • Podium step pre-use check: The check before a podium step or low-level platform is used: its castors, brakes, gate and guard rails are working and it stands level.
  • Rescue plan for work at height: How someone would be rescued from height, suspended in a harness or stuck on equipment, quickly and safely, planned before the work starts: who does it, with what, and how the emergency services would be called.
  • Scaffold inspection: The scaffold inspection report the Work at Height Regulations require: before first use, every 7 days, and after bad weather or alteration.
  • Stair tower inspection: The inspection report for a stair tower or temporary stair: after it is put up, at least every 7 days, and after anything that could affect it.
  • Stepladder pre-use check: The user's check of a stepladder before use: stiles, feet, treads, the locking bars and the platform, and that it is the right type for the work.

Site set-up and welfare

  • First aid kit check: Checks each first aid kit is stocked to the site's first aid needs assessment, in date and easy to find, and that a first aider or appointed person is named.
  • Site set-up checklist: Checks a site is ready before work starts: its boundary, safe ways in and around, signs, welfare, first aid, fire points and the construction phase plan.
  • Site signage check: Checks safety signs are where the risks are, in good condition, and still right for how the site is now.
  • Welfare cleaning log: A daily record that the toilets, washing area, canteen and drying room were cleaned and restocked, and by whom.
  • Welfare facilities check: The weekly look at the welfare CDM 2015 Schedule 2 requires: toilets, washing, drinking water, changing and drying, and somewhere to rest and eat.

Small plant and tools

  • 110 V transformer and lead check: Checks 110 V transformers, extension leads and splitters are sound and in their test date, so tools on site stay at reduced low voltage.
  • Abrasive wheel mounting record: Records that an abrasive wheel was mounted by a trained person: the wheel, its speed rating against the machine, the checks done and the run-up.
  • Cartridge-operated tool check: The check of a cartridge (powder-actuated) fixing tool before use: the tool, its guard, the right cartridge strength, secure storage and a trained user.
  • Compressor and air line check: The check of a compressor and its hoses before use: the receiver's examination in date, safety valve, gauges, hoses, whip checks and couplings.
  • Cut-off saw pre-use check: The check of a disc cutter before use: the right disc, properly mounted and in date, the guard set, and water suppression or extraction working for silica dust.
  • Generator pre-use check: The check of a site generator before use: placed safely, earthed, its RCD tested, leads sound and fuel stored safely.
  • Portable appliance inspection: The user check and formal visual inspection of portable electric tools and equipment: plug, cable, casing and test label.
  • Portable appliance register: Portable electrical equipment in one list: asset number, voltage, owner, the last test and when the next is due, and its result. Overdue items show at a glance.
  • Pressure system written scheme examination record: Keeps a pressure system's examination under its written scheme: the competent person's report attached, any repairs needed and when the next is due.
  • Temporary site electrics inspection: Checks the site's temporary electrical installation: distribution boards locked and labelled, RCDs tested, cables protected and routed, and the periodic test in date.
  • Welding and gas cylinder check: The check of gas welding and cutting sets and cylinders before use: regulators, hoses, flashback arrestors, and cylinders stored upright, secured and away from heat.

Structural steel

  • Steel erection inspection: The check of erected steelwork: line, level and plumb within tolerance, bolts the right grade and tightened, packs and grout, and temporary bracing kept until the frame is stable.

Temporary works

  • Excavation support inspection: The inspection of an excavation's temporary support (trench boxes, sheets, props) by a competent person, with the report the regulation asks for.

Windows and doors

  • Window and door installation check: The check of an installed window or external door: fixings, packers, square and plumb, seals to the structure, cavity closers, trickle vents, restrictors and opening.

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