References

Flooring

185 sources in the library on flooring, 40 on this page cited in a published note. Each one says what the document covers and what it is good for. Name a source to see which document it is and where to read it. One at a time. Page 1 of 5.

  1. very strong RN-2IWEP7 cited

    Health and Safety Executive

    HSE's guidance note behind every slip-resistance figure a flooring or paving note quotes, and the source that separates the two tests people conflate. Table 1 classifies slip potential from pendulum test values (PTV): 0 to 24 high, 25 to 35 moderate, 36 and above low. Table 2 gives the parallel Rz microroughness classification. It describes the HSL/UKSRG ramp CoF test, then deals with the German ramp tests separately: DIN 51097 uses barefoot operators with a soap solution and DIN 51130 uses heavily cleated EN ISO 20345 safety boots with motor oil, and HSE states it has reservations about both because neither uses contaminants representative of real workplaces and the way results are reported is a cause for concern. Table 3 sets the DIN 51130 R scale by slip angle: R9 6 to 10 degrees, R10 10 to 19, R11 19 to 27, R12 27 to 35, R13 above 35. It warns that R9 and sometimes R10 surfaces will be slippery when wet and that a single class covers a wide CoF range, R10 alone spanning 0.18 to 0.34, so an R number is not a substitute for a PTV. Note that BS 7976-2, the pendulum method, was withdrawn in February 2022, which makes this HSE page the right citation for the thresholds.

    Cited in Bathroom Tiles: Types, Cost & Layout, Best Flooring for Kitchens, Bathrooms & Living Rooms, Floor Tiles: Porcelain vs Ceramic vs Stone, How to Tile a Floor and 4 more.

  2. very strong RN-3UYBGN cited

    Health and Safety Executive

    The regulator's position on choosing a floor surface that will not become a slip hazard, page dated 23 June 2025. It cites regulation 12 of the Workplace (Health, Safety and Welfare) Regulations 1992, which requires floors to be suitable, in good condition and free from obstructions so people can move around safely, and states that where a floor is likely to be subject to frequent contamination people should still be able to walk on it without risk of slipping. It points to HSE guidance on assessing the slip resistance of flooring and the relevant British and European standards, to CIRIA C652 Safer surfaces to walk on, and to INDG225 Preventing slips and trips at work.

    Cited in Resin Floor Cost: 2026 UK Price Guide.

  3. very strong RN-KU7LZ2 cited

    Health and Safety Executive

    Sets the conditions under which work with asbestos does not need a licence. The exposure must be sporadic and of low intensity, with the air concentration not exceeding 0.6 fibres per cubic centimetre measured over 10 minutes, and must not exceed the legal control limit of 0.1 asbestos fibres per cubic centimetre of air averaged over a four hour period. Materials listed as non-licensed include asbestos-containing thermoplastic and vinyl floor tiles worked on without substantial breakage, drilling textured decorative coatings to fit fixtures and fittings, painting or repainting asbestos insulating board in good condition, and maintenance of asbestos cement products such as roof sheeting, tiles and rainwater goods provided they are not substantially damaged. Notifiable non-licensed work includes large-scale removal of textured decorative coatings by steaming or gelling, and removal of asbestos cement where the material will be substantially damaged or broken up. This is the reference for anyone lifting old vinyl floor tiles or stripping Artex in a pre-2000 home.

    Cited in Asbestos in the Home: Survey, Removal & Cost, Skip Hire Costs & Sizes.

  4. very strong RN-YM854W cited

    Historic England

    Historic England technical advice on the care and conservation of historic tiles, including Victorian encaustic and geometric floors; it sets the rule for bedding and grouting mortars.

    Cited in How to Restore Victorian Floor Tiles.

  5. very strong RN-J5N71X cited

    Historic England

    Historic England's homeowner guide to cleaning period floor and wall tiles; its stain table lists diluted chlorine bleach for robust unglazed tiles, which contradicts the old 'never use bleach' line.

    Cited in How to Restore Victorian Floor Tiles.

  6. very strong RN-NPO8FJ cited

    Ministry of Housing, Communities and Local Government

    The statutory figures behind a damp diagnosis, and the numbers to quote when a note explains why ground levels or a bridged damp proof course cause rising damp. Paragraph 5.2 requires that in an external wall the damp-proof course should be at least 150mm above the level of the adjoining ground (Diagram 8) unless part of the building protects the wall, and that in an external cavity wall the cavity should be taken down at least 225mm below the level of the lowest damp-proof course, or a damp-proof tray provided (Diagram 9a). For suspended timber ground floors it requires a ventilated air space of at least 75mm from the ground covering to the underside of any wall-plates and at least 150mm to the underside of the suspended timber floor or insulation, with ventilation openings on two opposing external walls of not less than 1,500mm2 per metre run of external wall or 500mm2 per square metre of floor area, whichever is greater; for suspended concrete floors the clear ventilated space is at least 150mm with the same opening sizes. Section 2.39 onwards covers radon, referring to BRE Report BR 211 for protective measures. The 2013 edition was published on 3 September 2013 with changes in effect from 1 October 2013.

    Cited in Barge Boards, Fascias & Soffits: Cost & Replacement, Breathable Membranes for Roofs & Walls, Brick Slips & Brick Cladding Systems, Build Basement Cost: 2026 UK Price Guide and 46 more.

  7. very strong RN-35VE7W cited

    Ministry of Housing, Communities and Local Government

    Table 0.1a sets separating element performance for dwellings: purpose built walls a minimum 45 dB DnT,w + Ctr, floors and stairs 45 dB airborne and a maximum 62 dB L'nT,w impact; where a dwelling is formed by material change of use the figures relax to 43 dB airborne and 64 dB impact. Table 0.2 sets the laboratory value for new internal walls and floors within a dwelling at a minimum 40 dB Rw. Requirement E2 covers internal walls between a bedroom or a room containing a WC and other rooms, and internal floors, but expressly does not apply to an internal wall containing a door, a wall separating an en suite toilet from its own bedroom, or existing walls and floors in a material change of use. Section 5 gives internal wall types A to D and internal floor types A to C, including timber or metal stud with plasterboard and mineral wool; paragraph 5.14 requires all gaps around internal walls to be filled.

    Cited in Acoustic Insulation for Floors & Walls, Acoustic Underlay & Soundproof Flooring, Ceiling Lights: Downlights vs Pendants vs Spots, Concrete Blocks: Aircrete vs Dense vs Hollow and 12 more.

  8. very strong RN-MJJMDX cited

    The National Archives (legislation.gov.uk)

    Section 10 makes it an offence, without the consent of the Treasury, to melt down or break up any metal coin that is current in the UK or that has ceased to be current on or after 16 May 1969. Penalty on summary conviction a fine not exceeding £400; on indictment a fine or up to two years' imprisonment or both; breach of a licence condition a fine up to level 5 on the standard scale. The court may order forfeiture of the coins, and officers of a body corporate can be personally liable where the offence involved their consent or neglect. The section says nothing about defacing, marking or affixing coins, so laying intact coins as a decorative floor is outside it.

    Cited in Penny Floor Cost: 2026 UK Price Guide.

  9. very strong RN-0ZQ4UL cited

    The National Archives (legislation.gov.uk)

    Section 12 of the 1928 Act, the defacement offence. It applies to printing or stamping on bank notes and says nothing about coins.

    Cited in Penny Floor Cost: 2026 UK Price Guide.

  10. very strong RN-XHATOQ cited

    The National Archives (legislation.gov.uk), Scottish Statutory Instruments

    SCOTLAND, latest revised version with no outstanding effects, and several of these contradict England. Type 20 makes a door, window or rooflight warrant-exempt EVEN WHERE THE FRAME IS REPLACED, so a Scottish window replacement needs no building warrant and no FENSA or Certass notification, unlike England where replacing a window is notifiable building work; it must still meet the regulations, including the 1.4 W/m2K or WER Band B standard. Type 19 exempts open raised external decking unless it is at a height of more than 1.2 metres. Type 21 exempts a paved area or hardstanding unless it exceeds 200 SQUARE METRES or forms part of a required access, a far more generous threshold than England's 5 square metre front garden rule. Type 22 exempts extra-low voltage electrical installations not exceeding 50 volts AC or 120 volts DC. Type 24 exempts like-for-like replacement of fittings including sanitary facilities, rainwater gutters and downpipes, solid fuel appliances, electrical fixtures, ventilation fans and kitchen fitments, but expressly NOT doors, windows or rooflights, nor oil or gas fired boilers. Type 25 exempts like-for-like replacement of flooring, lining, cladding, covering or rendering internally or externally. All are conditional on the work meeting the relevant requirements of the regulations.

    Cited in Replacing Misted Double Glazing: 2026 UK Cost Guide.

  11. strong RN-HGWVWB cited

    BSI

    BSI's record for BS 476-7, the surface spread of flame test behind the old Class 1 rating, showing it was withdrawn on 4 March 2025.

    Cited in Carpet Tile Installation Cost: 2026 UK Price Guide.

  12. strong RN-0NVN0R cited

    BSI

    Part 4 of the BS 5385 tiling series and the part that governs wet areas, which is the standard a wet room specification should name. Published 31 Oct 2015 and current. It gives recommendations for design and installation of ceramic and mosaic wall and floor tiling where there are specific functional requirements such as sterile conditions, specific environmental requirements such as wet areas, or potentially detrimental conditions such as chemical attack on either the installation or the background. It covers choice of materials, application practice and the design of backgrounds and structural bases, and augments Parts 1 (internal walls), 2 (external walls), 3 (internal and external floors) and 5 (terrazzo, natural and agglomerated stone).

    Cited in Cost to Tile a Bathroom, Floor Tiles: Porcelain vs Ceramic vs Stone.

  13. strong RN-UTBMKQ cited

    BSI

    The current edition of the UK waterproofing code, published 31 March 2022, superseding BS 8102:2009. It gives recommendations and guidance on dealing with and preventing the entry of water from external sources into structures partly or wholly below ground, and it recognises three types of protection which a specification must name: Type A waterproofing barrier materials applied to the structure, Type B structurally integral watertight construction, and Type C drained cavity construction. It requires the waterproofing strategy to be set at the earliest planning and design stage, covering structural design, overall weatherproofing design, waterproofing design, construction sequencing and buildability, and it treats external drainage and openings as part of the strategy rather than as details. It also sets out evaluation of groundwater conditions, consideration of harmful ground gases, and the risk assessment that drives the choice of grade. Descriptors include basements, tanking, vapour barriers, render, ground-water drainage and site investigations. This is the standard to cite for a basement shower room or a below-ground floor build-up.

    Cited in Basement & Cellar Conversions: Cost, Basement Conversion Cost & Feasibility (UK), Build Basement Cost: 2026 UK Price Guide, Cellar Tanking & Waterproofing and 3 more.

  14. strong RN-9M7SBG cited

    BSI

    BS 8203:2017, published 31 March 2017 and current. It gives recommendations for the installation of resilient floor coverings, specifically cork, linoleum, plastic (vinyl) and rubber, on both new and existing structures in conventional flooring applications. It includes design-stage considerations that support proper maintenance and long-term performance but excludes cleaning and maintenance guidance itself, and does not cover access flooring or specialised applications such as static-control flooring. This is the reference standard a note should cite for subfloor condition, acclimatisation and adhesive practice for vinyl and LVT.

    Cited in Floor Levelling & Subfloor Prep, Floor Screed Types: Sand-Cement vs Liquid Anhydrite, Floor Tiles: Porcelain vs Ceramic vs Stone.

  15. strong RN-ZPFZGO cited

    BSI

    BS 8204-1:2003+A1:2009, published 22 December 2003 with Amendment 1 in 2009, committee CB/300, current. Clause 1 gives recommendations for constituent materials, design, work on site, inspection and testing of concrete bases and cementitious levelling screeds that are to receive in situ wearing screeds. It is Part 1 of a series: Part 2 concrete wearing surfaces, Part 3 polymer modified cement, Part 4 terrazzo, Part 5 mastic asphalt, Part 6 synthetic resin, Part 7 pumpable self-smoothing screeds. This is the standard behind screed thickness, mix, curing and soundness-test claims for a sand and cement screed, including its recommendations on inspection and testing.

    Cited in Floor Screed Types: Sand-Cement vs Liquid Anhydrite.

  16. strong RN-ETP4JO cited

    BSI

    BS 8204-7:2003, published 12 March 2003, committee CB/300, current. Clause 1 gives recommendations for materials, design, work on site, inspection and testing of pumpable self-smoothing screeds, commonly called self-levelling screeds. It notes there are two principal types, one predominantly based on cementitious binders and the other predominantly on calcium sulfate (anhydrite) binders, and it covers both pumpable levelling screeds and pumpable wearing screeds in buildings. As a levelling screed it is intended to receive floor coverings such as textiles, linoleum, PVC, rubber and cork, or rigid floorings. This is the correct citation for a liquid or anhydrite screed note, including the distinction between cementitious and calcium sulfate binders that governs which adhesives and coverings can be used.

    Cited in Structural Materials: The Complete Guide.

  17. strong RN-TL1I4R cited

    BSI

    BS EN 12004-1:2017, published 28 February 2017, committee B/539, prepared by CEN/TC 67 Ceramic tiles, current; it supersedes BS EN 12004:2007+A1:2012. The scope covers three types of ceramic tile adhesive: cementitious for internal and external installations, and dispersion and reaction resin for internal installations only, on walls and floors. It gives the terminology for the products, working methods and application properties, specifies the performance requirements and the appurtenant test methods, the assessment and verification of constancy of performance, and the classification, designation and marking of tile adhesives, which is where the C, D and R type letters and class numbers on a bag of adhesive come from. It expressly does not provide criteria or recommendations for the design and installation of ceramic tiles, which is BS 5385. It notes tile adhesives may also be used for natural and agglomerated stones if they do not adversely affect the material. BS EN 12004-2:2017 gives the test methods.

    Cited in Bathroom Tiles: Types, Cost & Layout, Grab Adhesive & Construction Adhesives, How to Tile a Wall or Floor, Tile Adhesive & Grout Explained and 2 more.

  18. strong RN-41525H cited

    BSI

    BSI's summary of BS EN 1307, confirming that the standard classifies carpet tiles as well as other textile floor coverings into use classes.

    Cited in Carpet Tile Installation Cost: 2026 UK Price Guide, Carpet Types, Grades & Cost.

  19. strong RN-9A1H9G cited

    BSI

    The standard that produces the Euroclass letter, and the one regulation 7(2) of the Building Regulations names by title and ISBN when it requires external wall materials on a relevant building to be Class A2-s1, d0 or A1. Published 31 Jan 2019 and Current. Part 1 provides the reaction to fire classification procedure for all construction products, including products incorporated within building elements, with the sole exception of power, control and communication cables which are classified under EN 13501-6. Products are considered in relation to their end-use application, which is why an insulation board or cladding panel cannot carry a meaningful Euroclass in the abstract: the classification attaches to the product as used in a stated build-up. This is the reference for reading the suffixes as well as the letter, s for smoke production and d for flaming droplets.

    Cited in Cladding and Render: The Complete UK Guide (2026), PIR vs Mineral Wool Insulation Compared.

  20. strong RN-LLZVVY cited

    BSI

    BS EN 13813:2002, published 11 November 2002, committee CB/300, under review, identical to EN 13813:2002. It is the product standard for screed material used in floor construction, giving the properties and requirements a screed material must declare, and it is the standard a screed specification designates a product against. BSI publishes no scope preview for this page, so the designation letters and strength classes themselves must be read from the standard or from BS 8204-1 and BS 8204-7, which are the companion codes of practice for laying cementitious and pumpable self-smoothing screeds. Cite this one for the point that screed is a specified product with declared properties rather than a generic site mix.

    Cited in Floor Screed Types: Sand-Cement vs Liquid Anhydrite.

  21. strong RN-3LY0EO cited

    BSI

    The standard that supplies the imposed floor loading a home gym, a loft store or a mezzanine has to be checked against, and the material densities used to work out the dead load of a new floor build-up. Published 29 July 2002, current and under review, BS EN 1991-1-1 classifies actions, distinguishing self-weight from imposed loads, defines design situations, then gives densities of construction and stored materials, self-weight of construction works and imposed loads for buildings by category of use. A note that says a floor may not take a rack of weights or a large aquarium should point here, together with the UK National Annex, rather than to a rule of thumb.

    Cited in Building a Home Gym: Cost & Setup (Garage or Spare Room), Skylights vs Roof Lanterns vs Roof Windows.

  22. strong RN-G4ZRB1 cited

    BSI

    BS EN 300:2006, published 31 August 2006, committee B/541, current; it supersedes BS EN 300:1997. Clause 1 states it applies to oriented strand boards, defines the terms, establishes a classification and specifies the requirements, with clause 4 being the classification of boards and clause 5 the general requirements for all OSB types. It states plainly that the values it lists relate to product properties and are not characteristic values to be used in design calculations: test methods for mechanical properties for structural purposes are in EN 789, determination of characteristic values and density for structural purposes in EN 1058, and design characteristic values for OSB in EN 12369-1, with supplementary properties in Annex C. This is the standard that a board marked OSB3 is classified against, so cite it whenever a note specifies OSB for a floor deck.

    Cited in Timber Merchants: What They Stock & How to Buy.

  23. strong RN-DNW09X cited

    BSI

    BS EN 312:2010, published 30 November 2010, committee B/541, under review; it supersedes BS EN 312:2003 and the earlier seven-part series BS EN 312-1 to -7, whose part titles are still visible in the BSI catalogue and name the board categories directly: general purpose boards for use in dry conditions, boards for interior fitments including furniture for use in dry conditions, load-bearing boards for use in dry conditions, load-bearing boards for use in humid conditions, and heavy-duty load-bearing boards for dry and for humid conditions. Clause 1 of the 2010 edition specifies the requirements for flat-pressed or calendar-pressed unfaced particleboards as defined in EN 309, and it is called up in EN 13986 for construction applications where these are referred to as resin-bonded particleboards. It warns the values it lists are product properties and are not characteristic values for design calculations, which come from EN 12369-1 or from testing to EN 789, EN 1058 and ENV 1156. This is the standard behind a chipboard flooring panel grade.

    Cited in Chipboard, OSB & Plywood Flooring Compared, Timber Merchants: What They Stock & How to Buy.

  24. strong RN-2JSE7T cited

    BSI

    BSI's catalogue entry for BS EN 717-1, the chamber test method used to measure formaldehyde emission from wood-based products. It confirms the test standard exists under that name.

    Cited in Bamboo Flooring: Cost, Pros & Cons.

  25. strong RN-2F1BXP cited

    BSI (British Standards Institution)

    The current British code of practice for laying a tiled floor, published 31 May 2024. It is the third of what is now a four-part BS 5385 series: Parts 1 and 2 cover internal and external wall tiling, Part 4 covers tiling in special conditions such as wet areas and swimming pools, and Part 3 now covers all rigid flooring. The 2024 revision consolidates and replaces both BS 5385-3:2014 on ceramic and mosaic floor tiling and BS 5385-5:2009 on terrazzo, natural stone and agglomerated stone flooring, so a specification that still cites BS 5385-5 is out of date. Its scope is recommendations for the design, installation and maintenance of floor tiling using ceramic tiles, mosaics, terrazzo tile and slab, natural stone internal and external floorings, and engineered stone for internal flooring. BSI states the revision was driven by ceramic floor tiles becoming thicker and larger, which has made the installation methods for ceramic and stone converge. Covers bedding onto concrete, cement and sand and calcium sulfate screeds, heated screeds, timber and existing hard finishes, plus movement joints and tolerances.

    Cited in Floor Levelling & Subfloor Prep, How to Tile a Floor.

  26. strong RN-WOP4JZ cited

    Robust Details Ltd

    The scheme that lets a builder skip pre-completion sound testing by registering a certified separating wall or floor construction instead, and the practical answer for a note that says a converted flat must pass a sound test. The site publishes an introduction to the scheme, the Robust Details Handbook containing the full specification for each detail, and the registration process for new houses and flats, with separate routes signposted for Scotland and Northern Ireland because the underlying regulations differ there. A registered Robust Detail must be built exactly as specified, which is why floor build-up and underlay substitutions matter.

    Cited in Acoustic Insulation for Floors & Walls.

  27. strong RN-098KFI cited

    Royal Institution of Chartered Surveyors

    The RICS scope table for a Level 3 survey, which lets a note say exactly what the surveyor will and will not do rather than repeating marketing copy. For every level, the member inspects roof space no more than three metres above floor level using a ladder where safe and reasonable. At Level 3 specifically the member enters the roof space and visually inspects the roof structure, lifts small corners of thermal insulation to identify its thickness and type and the nature of the ceiling below, and repositions a small number of lightweight possessions where permission is given; attempts to open all windows where permission, keys and safety allow; lifts the corners of loose and unfitted floor coverings and assesses all floors for excessive deflection by a heel-drop test, carrying out an inverted head and shoulders subfloor inspection and entering the underfloor area where safe; lifts accessible inspection chamber covers to drains and septic tanks and observes the drains in normal use; visually inspects all visible parts of the service systems, operating a sample of lights and extractor fans and asking the occupier to operate the heating; and performs a comprehensive inspection of the grounds. Services are never tested, only observed in normal operation, and the member does not perform or comment on design calculations. Appendices A and B of the Home Survey Standard are the benchmark tables the levels are built from.

    Cited in Building Surveys: Level 1, 2 & 3 Explained & Cost.

  28. good RN-00NHQO cited

    Carpet Foundation

    Defines the five carpet constructions a showroom will offer and where each belongs. Twist pile has a coarse rugged finish; velvet pile is smooth and suede-like, and on a like-for-like basis differs from twist only aesthetically; loop pile replicates natural coir and sisal and is a poor choice where cats or anything with long claws are present; Saxony has a deep pile that flattens, so it is not recommended for heavy traffic areas though it is popular in bedrooms; patterned carpet usually has a smooth velvet surface with good appearance retention. It also makes the general point that shorter pile wears better than long pile but is less luxurious.

    Cited in Carpet Types, Grades & Cost.

  29. good RN-3YQ5BW cited

    Carpet Foundation

    Carries the figure a note on underlay needs: new underlay can increase the life of a carpet by forty per cent. The Carpet Foundation and its Chartered Trading Standards Institute approved Consumer Code of Practice recommend that new underlay is bought with every new carpet, because underlay lets the carpet sit properly and wear evenly, improves feel underfoot, increases heat and sound insulation and can reduce energy costs, reduces pile compression so appearance is retained longer, and considerably improves acoustics with impact noise reduced. It also warns that manufacturers may reject a complaint where old underlay, or no underlay, was used.

    Cited in Carpet Types, Grades & Cost, How to Fit Carpet (or Prep for a Fitter).

  30. good RN-LA5CED cited

    The Carpet Foundation

    The Carpet Foundation's room guide, recommending an 80/20 wool-nylon carpet for the living room as the hard-wearing choice.

    Cited in Carpet Types, Grades & Cost.

  31. good RN-HTV9ZU cited

    The Carpet Foundation

    The Carpet Foundation's buying tips, naming BS 5325 as the British Standard that carpet fitting should follow.

    Cited in Carpet Types, Grades & Cost.

  32. good RN-ACYRG7 cited

    The Carpet Foundation

    The Carpet Foundation's guidance on carpet over underfloor heating, based on joint testing with the Underfloor Heating Manufacturers Association; it sets a 2.5 tog combined limit and recommends underlay below 1.3 tog.

    Cited in Stretch Carpet Cost: 2026 UK Price Guide.

  33. good RN-YL820L cited

    The Tile Association (TTA)

    The tiling trade's own list of the standards a specification should name, and the fastest way to check whether a quotation cites the right one. Design and installation: BS 5385-1 internal wall tiling in normal conditions, BS 5385-2 external wall tiling, BS 5385-3 internal and external ceramic and mosaic, natural stone and terrazzo flooring and internal agglomerated stone flooring, BS 5385-4 tiling in special conditions. Waterproofing and grout: BS EN 14891 liquid-applied water impermeable products for use beneath ceramic tiling bonded with adhesives, which is the wet room tanking standard, and BS EN 13888 grout for tiles. Slip resistance: BS 7932 determination of the unpolished and polished pendulum test value of surfacing units. Base preparation: BS 8000-9 cementitious levelling screeds and wearing screeds, BS 8000-8 plasterboard partitions and dry linings, BS 8000-16 sealing joints using sealants. Tile specification: BS EN 14411 ceramic tiles definitions and classification, and the BS EN ISO 10545 series parts 1 to 16 of test methods. Natural stone and terrazzo: BS EN 12057 modular tiles, BS EN 13748-1 and -2 terrazzo tiles for internal and external use, BS EN 14157 determination of abrasion resistance. Accessibility: BS 8300.

    Cited in Replace Shower Pan Cost: 2026 UK Price Guide.

  34. fair RN-6P0S5V cited

    Centexbel

    An accredited textile testing institute's summary of EN 1307, listing Classes 21 to 23 (domestic) and 31 to 33 (commercial) as moderate, general and heavy use.

    Cited in Carpet Types, Grades & Cost.

  35. fair RN-4JKS63 cited

    The Tile Association

    The tiling trade body's summary of the 2024 revision of BS 5385-3. It says tiling onto plywood now needs an intermediate layer such as an uncoupling membrane or backer board.

    Cited in Penny Floor Cost: 2026 UK Price Guide.

  36. fair RN-NY0QQG cited

    University of Salford Acoustics Research Centre (Sound science for schools and colleges)

    A University of Salford acoustics teaching page explaining the decibel scale. It settles that a change of about 10 dB is heard as roughly a doubling or halving of loudness.

    Cited in Acoustic Underlay & Soundproof Flooring.

  37. fair RN-33IRPU cited

    Which?

    Which? consumer guide to cleaning carpets. It explains that enzyme carpet cleaners break down organic odours and work only on organic matter such as urine, vomit and pet accidents.

    Cited in How to Care For Your Carpets.

  38. supplier figure RN-M3V7ON cited

    3M United Kingdom

    3M's UK product page for its clear safety and security window films, stating that the film blocks 99% of the ultraviolet rays that fade furnishings.

    Cited in How to Care For Your Carpets.

  39. supplier figure RN-NCUFP1 cited

    Advanced Acoustics

    Manufacturer's product page for a 10 kg/m2 mass-loaded vinyl soundproofing mat, 1.2 m by 2 m (2.4 m2 per sheet), priced at £42.99.

    Cited in Acoustic Underlay & Soundproof Flooring.

  40. supplier figure RN-KNNUYK cited

    Amtico

    Amtico's own page on its company and manufacturing. It settles that Amtico has designed and made LVT at its Coventry factory since the early 1960s.

    Cited in Amtico & LVT Flooring: Cost & How to Choose.