Roofing Materials
303 sources in the library on roofing materials, 20 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 4 of 8.
- supplier figure RN-7KRYO6 cited
Ubbink (UK) Ltd
Ubbink's datasheet for Ubiflex Standard. It gives the construction (aluminium mesh with granular-coated bitumen), widths of 150 to 1,000 mm, roll lengths of 6 and 12 m and a thickness of 3.5 mm.
Cited in Lead Flashing & Alternatives Explained.
- supplier figure RN-VBYCOZ cited
VELUX
VELUX's technical library page for its EDW flashing shows that flashings are specific to the roofing material, this one being for profiled tiles up to 120 mm, so the kit must be chosen to suit the roof covering.
- supplier figure RN-21H7UU cited
VELUX
VELUX's flat roof window range page. It gives the roof pitch range for each unit: 0 to 15 degrees for curved glass and 2 to 15 degrees for flat glass.
- supplier figure RN-ZWKM6N cited
VELUX
VELUX's UK product page describes its Glazing 70 double glazing as the standard glazing, with triple glazing offered as an option, which settles that Velux roof windows come double glazed as standard.
- supplier figure RN-JLV1GR cited
VELUX
VELUX's data sheet for its manual centre-pivot GGL roof window. It gives the permitted roof pitch range of 15 to 90 degrees, the sizes and the U-value of each glazing option.
Cited in Skylights vs Roof Lanterns vs Roof Windows, Velux & Roof Windows: Sizes, Cost & Fitting.
- supplier figure RN-LF9A97 cited
VELUX
VELUX's data sheet for its centre-pivot GGU roof window. It confirms the sash rotates 180 degrees so the outer glass can be cleaned from inside, and lists pitch range and U-value.
- supplier figure RN-8AXP21 cited
VELUX
VELUX's data sheet for its top-hung GPL roof window. It gives the permitted roof pitch range of 15 to 55 degrees, narrower than the 15 to 90 degrees of the centre-pivot GGL.
- supplier figure RN-HF2FVE cited
VELUX
The manufacturer's own size code table, the only reliable source for what a Velux code means. Pitched roof window codes and dimensions include FK06 at 66cm by 118cm, MK04 at 78cm by 98cm, MK06 at 78cm by 118cm, MK08 at 78cm by 140cm, PK06 at 94cm by 118cm, PK08 at 94cm by 140cm, SK06 at 114cm by 118cm, SK08 at 114cm by 140cm, UK04 at 134cm by 98cm and UK08 at 134cm by 140cm. Flat roof window sizes run from 60cm by 60cm up to 150cm by 150cm and 200cm by 100cm. The first letter pair gives the width band and the digits the height, which is the pattern a size-code note should explain.
Cited in Average Loft Conversion Cost: Real 2026 Breakdown by Type, Loft Conversion Ideas: Bedrooms, Bathrooms & Home Offices, Loft Conversion Mistakes to Avoid, Loft Conversion Windows & Skylights: Complete Guide and 5 more.
- supplier figure RN-1AMCI0 cited
VELUX
VELUX UK's roof window product page. It states the guarantee terms: 10 years for roof windows, 3 years for blinds and 5 years for electrical parts.
Cited in Velux & Roof Windows: Sizes, Cost & Fitting, Velux Window Repair: Leaks, Problems & Costs.
- supplier figure RN-31P74J cited
VELUX Company Ltd
VELUX's page for its Replacement Supply & Fit service, which supplies a new roof window and has it fitted by a VELUX Certified Installer under one inclusive quote.
Cited in Roof Window Sizes Explained (Velux Codes), Velux Window Servicing: Cost & What's Involved.
- supplier figure RN-GSVM5V cited
VMZINC UK
VMZINC's UK FAQ on zinc roofing. It states that the thinnest zinc sheet sold for roofing in the UK is 700 microns (0.7 mm) and that zinc corrodes at about 2 microns a year.
Cited in Lead Flashing & Alternatives Explained.
- supplier figure RN-F5WM1V cited
Welsh Slate
The producer's company page. It names the three Welsh roofing slate quarries it operates today: Penrhyn, Ffestiniog and Cwt-y-Bugail.
Cited in Slate Roof Tiles: Types, Cost & Lifespan.
- supplier figure RN-1G1BWN cited
Welsh Slate Ltd
Penrhyn Welsh Slate from Penrhyn Quarry, Bethesda. Supplied in three thickness grades: Capital 5.5mm (thinnest production), County 7mm (the main production thickness) and Celtic 9mm. Core production sizes are 500 x 300mm, 400 x 250mm and 300 x 200mm, although the stone can produce slates over 1 metre long.
Cited in Natural Slate vs Fibre-Cement Slate.
- supplier figure RN-G68MSX cited
Welsh Slate Ltd
Welsh Slate batten gauge, batten quantity and holing gauge by slate length. At 50mm headlap: 600mm slate, batten gauge 275mm, 3.64 lin m batten per m2, holing gauge 335mm; 550mm slate 250mm gauge, 4.00 lin m/m2, holing 310mm; 500mm 225mm gauge, 4.44 lin m/m2, holing 285mm; 455mm 202mm gauge, 4.95 lin m/m2, holing 262mm; 400mm 175mm gauge, 5.71 lin m/m2, holing 235mm; 350mm 150mm gauge, 6.67 lin m/m2, holing 210mm; 300mm 125mm gauge, 8.00 lin m/m2, holing 185mm. At 80mm headlap the gauges tighten: 600mm slate 260mm gauge and 3.85 lin m/m2 (holing 350mm), 500mm 210mm gauge and 4.76 lin m/m2 (holing 300mm), 400mm 160mm gauge and 6.25 lin m/m2 (holing 250mm), 300mm 110mm gauge and 9.09 lin m/m2 (holing 200mm).
- supplier figure RN-PB5VDM cited
Welsh Slate Ltd
Welsh Slate minimum headlap tables to BS 5534, split by driving rain exposure. Moderate exposure (less than 56.5 l/m2 per spell): a 600 x 350mm slate needs 115mm headlap at 22.5 degrees, 105mm at 25, 95mm at 27.5, 85mm at 30, 80mm at 35, 70mm at 40, 60mm at 45-75 and 55mm at 85 degrees and over; a 600 x 300mm slate needs 190mm at 22.5 degrees. Small slates (400 x 250mm and below) are only listed from 35 degrees, at 70mm headlap falling to 45mm at 85 degrees plus. Severe exposure (56.5 l/m2 per spell or greater) demands markedly more: 600 x 350mm needs 150mm at 22.5 degrees, 130mm at 25, 120mm at 27.5, 110mm at 30, 100mm at 35, 85mm at 40, 80mm at 45-75; 500 x 250mm is not permitted below 25 degrees and needs 150mm there. Recommendations apply to rafter lengths up to 9m in moderate and 6m in severe driving rain exposure.
Cited in Natural Slate vs Fibre-Cement Slate.
- supplier figure RN-BXJX6T cited
Welsh Slate Ltd
Welsh Slate standard roofing slate sizes and weights in tonnes per 1000 slates, excluding packaging. Thickness grades are Capital 5.5mm, County 7mm and Celtic 9mm (nominal). Penrhyn Heather Blue: 600 x 350mm 3.23 / 4.12 / 5.29 t per 1000; 600 x 300mm 2.77 / 3.53 / 4.54; 550 x 300mm 2.54 / 3.23 / 4.16; 500 x 300mm 2.23 / 2.94 / 3.78; 500 x 250mm 1.93 / 2.45 / 3.15; 455 x 250mm 1.75 / 2.23 / 2.87; 400 x 250mm 1.54 / 1.96 / 2.52; 400 x 200mm 1.23 / 1.57 / 2.02; 350 x 250mm 1.35 / 1.72 / 2.21; 350 x 200mm 1.08 / 1.37 / 1.76; 300 x 300mm 1.51 / 1.76 / 2.27. Ffestiniog Blue Grey is slightly lighter, for example 500 x 250mm 1.86 / 2.36 / 3.04 t per 1000 and 400 x 200mm 1.19 / 1.51 / 1.94.
Cited in Natural Slate vs Fibre-Cement Slate, Slate Roof Tiles: Types, Cost & Lifespan.
- supplier figure RN-YX1CHF cited
Wickes
A national retailer's product page for a mid-weight breathable roofing membrane in a 50 x 1 m roll. It shows the shelf price of £74 including VAT.
- supplier figure RN-ENEFNU cited
Wickes
Wickes product page for a complete Restec 1010 GRP fibreglass roofing kit sold to cover 10 m2; it gives the retail price and the kit's application temperature range.
Cited in Flat Roof Materials: EPDM vs GRP vs Felt.
- supplier figure RN-BVWJKY cited
Wickes
the retail price Wickes publishes for Restec 2020 Flexitec GRP Roofing Kit 10m2, which is the supply figure the cost book records for this item
- secondary RN-R55Z11 cited
RIBA Journal (article by the Lead Sheet Training Academy)
An article written and updated in November 2025 by the Lead Sheet Training Academy, published by the RIBA Journal. It gives the expected life of correctly installed rolled lead by code.
Cited in Lead Flashing & Alternatives Explained.
- very strong RN-8Y875H
Ministry of Housing, Communities and Local Government
The list of test standards common across product families that UK approved bodies use when assessing construction products, published 27 January 2021 and last updated 21 May 2025, in force from 1 January 2021. Names the specific test methods behind fire performance claims a product data sheet will quote, so a note can verify what a rating actually measures: TS 1187 external fire exposure to roofs; EN ISO 1182 non-combustibility test; EN ISO 1716 gross heat of combustion or calorific value; EN 13823 the single burning item test for building products excluding floorings; EN ISO 11925-2 ignitability under direct flame impingement, the single-flame source test; EN ISO 9239-1 burning behaviour of floorings using a radiant heat source; EN 1365-3 and EN 1365-4 fire resistance of loadbearing beams and columns; EN 1634-1 and EN 1634-3 fire resistance and smoke control for door and shutter assemblies and openable windows; and the EN and ENV 13381 series for applied protection to composite, hollow steel, timber and steel structural members. The latest versions of the standards themselves are on the BSI website.
- very strong RN-XS4MR0
Ministry of Housing, Communities and Local Government and Office for Product Safety and Standards
The official list that decides which British and European standards a construction product's declaration of performance must be assessed against, first published 18 December 2020 and last updated 26 September 2025, applying to England, Scotland and Wales. Explains that designated standards support Regulation (EU) No. 305/2011 as amended from time to time, and that together with the horizontal standards on assessment methods they create the common technical language UK approved bodies use when carrying out assessments. Published as a notice of publication dated 26 September 2025, a 51 page PDF, superseding the notice of 1 January 2021 of 53 pages, alongside a consolidated list in ODS format at version 2. This is the reference that turns the standard number cited in a declaration of performance into a check that the right standard was used. A companion page covers horizontal test specifications for construction products.
- strong RN-04DH6J
BBA (British Board of Agrement)
The certification body whose Agrement Certificate is what a note usually means when it says a system is approved, and the page that lists which schemes it actually runs. The BBA's certification team issues certificates for the BBA Agrement, HAPAS (Highways Authority Product Approval Services), European Technical Assessment (ETA), and the Microgeneration Certification Scheme. Alongside product certification it runs certification of people, including the BBA Approved Installer Scheme, the BBA Competent Person Scheme, the BBA Gas Membrane Approved Installer Scheme, TrustMark registration and the BBA PAS 2030 Scheme, plus a Client Managed Inspection Service. Its testing services are also available standalone and include durability, mechanical, physical and structural, weather resistance and wind serviceability, conformance and fit-for-purpose, thermal performance, and onsite testing and trials. An Agrement Certificate is the route by which a product without a harmonised European product standard, such as a tanking membrane, a multifoil or a proprietary EWI system, gets an independently assessed statement of fitness for a stated use.
- strong RN-J699CC
BSI (British Standards Institution)
STATUS: CURRENT. BS 1202-1:2002 was published 7 February 2002 under committee B/518, ISBN 0 580 37316 9, and specifies the requirements, including dimensions and finish, for steel nails. It divides them into wire nails, of which it lists 14 types from convex head roofing nails to duplex head nails with round, square, annular ringed and helical threaded shanks and chisel or diamond points, and cut nails, of which it lists two types, cut clasp nails and cut floor brads. This is the standard behind a specification such as galvanised round wire nails to BS 1202-1, and it is the reference used when BS 5534 calls up nail types for tile and slate fixing. Parts 2 and 3 (both 1974) cover copper nails and aluminium nails. Catalogue page confirms number, title, date, status, committee and the type lists; dimensional tables are paywalled.
- strong RN-70QYJ4
BSI (British Standards Institution)
STATUS: CURRENT. BS 5440-1:2023 was published 12 December 2023 and supersedes BS 5440-1:2008 and BS 5440-1:2000; a note citing an undated BS 5440 or the 2000 edition should be updated. It specifies requirements for installing gas appliances to chimneys, the chimney work a gas engineer undertakes under UK conditions, and the maintenance of chimneys. It applies to open flued chimneys for Type B appliances and room sealed chimneys for Type C appliances of rated input not exceeding 70 kW net burning 1st, 2nd or 3rd family gases, natural or fanned draught, whether the chimney is supplied with the appliance or separately, and it complements BS EN 15287-1 and BS EN 15287-2 with UK specific requirements. It excludes gas fired incinerators, leisure accommodation vehicles and hydrogen only appliances. Part 2 (BS 5440-2:2023) covers ventilation provision. Catalogue page confirms number, title, date, status and scope; requirements are paywalled.
- strong RN-PFR673
BSI (British Standards Institution)
STATUS: CURRENT. BS EN 12588:2006 was published 31 January 2007, is identical to EN 12588:2006, and supersedes BS EN 12588:1999, which is withdrawn. It specifies the designation, chemical composition requirements, surface condition and dimensional tolerances for rolled lead sheet produced by roll deformation, for roofing, flashings, weatherings, cladding, pre formed panels, damp proof courses and similar building uses, and it includes the colour codes for thickness that give the familiar Code 3 to Code 8 lead sheet designations. Two changes from the 1999 edition are worth citing: the maximum tin content was raised from 0.005 per cent to 0.05 per cent to improve corrosion resistance, and manual handling guidance was added because of the weight of the product, along with recycling recommendations noting a documented recycling rate above 90 per cent. Catalogue page confirms number, title, date, status, supersession, scope and those changes.
- strong RN-S7TZDR
BSI (British Standards Institution)
STATUS: CURRENT (marked Under Review). BS EN 1304:2013 was published 30 June 2013 and is the harmonised product standard for clay roofing tiles and fittings used in pitched roof coverings and in vertical wall cladding and lining, superseding BS EN 1304:2005. It specifies structural characteristics, geometric properties, physical and mechanical characteristics, and gives the marking and evaluation of conformity requirements, so it is the standard a clay tile is CE or UKCA marked against. It sits alongside BS EN 490 for concrete tiles, BS EN 492 for fibre cement slates and BS EN 12326 for natural slate, with the test methods for clay tiles in the BS EN 539 series and installation in BS 5534. Catalogue page confirms number, title, date, status and scope; the requirement tables are paywalled.
- strong RN-OEMEFD
BSI (British Standards Institution)
STATUS: CURRENT (marked Under Review). BS EN 14179-1:2016 was published 31 August 2016 and supersedes BS EN 14179-1:2005, which is withdrawn. It specifies the heat soak process system plus the tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat heat soaked thermally toughened soda lime silicate safety glass for buildings. Its purpose is the point a note should make: ordinary toughened glass to BS EN 12150-1 carries a residual risk of spontaneous breakage from nickel sulphide inclusions, and the heat soak process to BS EN 14179-1 is what reduces that risk, which is why heat soaked glass is specified for overhead glazing, balustrades and large frameless panes. Curved heat soaked glass is excluded. Catalogue page confirms number, title, date, status, supersession and scope; the process detail is paywalled.
- strong RN-KTG0RI
BSI (British Standards Institution)
STATUS: WITHDRAWN on 30 April 2010, superseded by BS EN 14250:2010. BS EN 14250:2004 was published 6 January 2005 and specified the product requirements for prefabricated structural members such as trusses, beams and girders made of timber and assembled with punched metal plate fasteners, covering materials, strength, reaction to fire, timber sizing, moisture content, dimensional accuracy and joint requirements, plus evaluation of conformity and marking. This is the standard behind the trussed rafter roof that a loft conversion note has to explain cannot simply have its webs cut out, so it matters that the edition cited is current: a note quoting BS EN 14250:2004 is citing a withdrawn one. Design of the trusses themselves sits under BS EN 1995-1-1. Catalogue page confirms number, title, publication date, withdrawal date and scope.
- strong RN-GIC2HB
BSI (British Standards Institution)
STATUS: CURRENT (marked Under Review). BS EN 14449:2005 was published 10 February 2006, is identical to EN 14449:2005, ISBN 0 580 46084 3, ICS 81.040.20, committee B/520. It specifies the evaluation of conformity and the factory production control for laminated glass and laminated safety glass used in buildings, including requirements that may be subject to regulation, and it notes that glass products incorporating electrical components may also fall under other directives such as the Low Voltage Directive. It is the conformity companion to the BS EN ISO 12543 series, which sets the product requirements: a note should cite BS EN ISO 12543-2 for what laminated safety glass must achieve and BS EN 14449 for how a manufacturer demonstrates and marks conformity. Catalogue page confirms number, title, date, status, ISBN, committee and scope.
- strong RN-GWKTRS
BSI (British Standards Institution)
STATUS: WITHDRAWN on 31 January 2012. BS EN 490:2004+A1:2006 was published 19 January 2005, identical to EN 490:2004, and specified the requirements for concrete roofing tiles and fittings for pitched roof coverings and for wall cladding and lining. It was replaced by BS EN 490:2011, so a note citing the 2004 or 2006 edition is quoting a withdrawn one; an undated citation of BS EN 490 remains safe. The companion test method standard is BS EN 491, and the equivalents for other coverings are BS EN 1304 for clay tiles, BS EN 492 for fibre cement slates and BS EN 12326 for natural slate, with fixing and wind uplift design in BS 5534. Catalogue page confirms number, title, publication date, withdrawal date and scope but does not name the replacement.
- strong RN-T77400
BSI (British Standards Institution)
STATUS: WITHDRAWN on 31 January 2012, on the same day as its companion product standard BS EN 490:2004+A1:2006. BS EN 491:2004 was published 18 January 2005, ISBN 0 580 45377 4, and specified the test methods for concrete roofing tiles and valley tiles for pitched roofs: dimensional checks on hanging length, squareness, cover width and flatness, and performance tests for mass, transverse (breaking) strength, impermeability, freeze thaw resistance and nib support. It was replaced by BS EN 491:2011. A note quoting transverse strength figures for concrete tiles tested to BS EN 491:2004 is citing a withdrawn edition. Catalogue page confirms number, title, publication date, withdrawal date and scope but does not name the replacement.
- strong RN-KZE79J
BSI (British Standards Institution)
STATUS: WITHDRAWN on 1 June 2007. BS EN 519:1995 was published 15 October 1995 and set the requirements for machine strength graded structural timber and for the grading machines themselves, covering quality control, test methodology and acceptance criteria. It was superseded by the BS EN 14081 series, Timber structures. Strength graded structural timber with rectangular cross section, whose parts are BS EN 14081-1:2016+A1:2019 general requirements, BS EN 14081-2 machine grading type testing, BS EN 14081-3 machine grading factory production control and BS EN 14081-4. Any note that says timber is machine graded to BS EN 519 is quoting a standard withdrawn in 2007; the machine graded counterpart to visual grading under BS 4978 is now BS EN 14081. Catalogue page confirms number, title, publication date, withdrawal date and scope but does not name the replacement.
- strong RN-AS511G
BSI (British Standards Institution)
STATUS: CURRENT. BS EN 539-2:2013 was published 31 May 2013 and supersedes BS EN 539-2:2006. It specifies the test method for determining the frost resistance of clay roofing tiles and fittings, and it is explicit that the method is common across CEN member states while each state sets its own required performance level, which is why UK frost resistance expectations for clay tiles are set nationally rather than by the test standard. Part 1 of the series covers the impermeability test. It is the test standard that supports the product requirements in BS EN 1304:2013, and it is the reference behind a note explaining why an unsuitable clay tile spalls and delaminates after a hard winter. Catalogue page confirms number, title, date, status and scope; the procedure is paywalled.
- strong RN-NW4UCS
BSI (British Standards Institution)
STATUS: WITHDRAWN on 21 September 2022. BS EN ISO 1461:2009 was published 31 July 2009 and superseded BS EN ISO 1461:1999. It specified the properties and test methods for zinc coatings applied by dipping fabricated iron and steel articles in molten zinc, covering the zinc bath, information the purchaser must supply, safety, inspection and sampling, and coating thickness, appearance, adhesion and corrosion resistance. It did not apply to continuously galvanized sheet or wire, mesh, automatic tube and pipe galvanizing, or products with their own standards such as fasteners (BS EN ISO 10684). It has been replaced by the 2022 edition of BS EN ISO 1461, so a note specifying galvanizing to BS EN ISO 1461:2009 is quoting a withdrawn edition and should be undated or cite the current one. Catalogue page confirms number, title, publication date, withdrawal date, what it supersedes and its scope, but does not name the replacement.
- strong RN-SY81WR
HETAS Limited
HETAS describes itself as a not for profit organisation operating a competent person scheme for installers of biomass and solid fuel heating, together with registration for retailers and chimney sweeps and approval of appliances and fuels. Its site carries searchable registers of registered businesses by postcode or business ID covering retailers, installers, chimney sweeps, servicing engineers and biomass maintenance, plus a separate Removed Business Register for firms no longer registered, and an approved stoves and fuels search. It publishes consumer guidance on choosing a stove, maintenance, and when to have appliances serviced and chimneys swept, and runs Chimney Fire Safety Week, held 7 to 13 September in 2026. HETAS is one of the MHCLG-authorised competent person schemes, so a HETAS registration can be checked rather than taken on trust.
- good RN-1WX63T
Glass and Glazing Federation
The GGF is the UK industry body for glass and glazing, representing companies across glazing, fenestration and related trades. It runs a Technical Library and Technical Hub with guidance on windows, doors, conservatories and specialist glazing, a searchable directory of member companies, and a Member Complaint Service for disputes with a member firm. It sits alongside and links to FENSA for windows and doors Building Regulations compliance, BFRC for window energy ratings, and RISA certification. Approved Document L names the GGF as the source of the methods for calculating Window Energy Rating and Doorset Energy Rating, which is why this body matters for a note quoting WER bands.
- good RN-WTCK8U
Green Roof Organisation
GRO was established in 2008 to provide UK-relevant guidance for green roofs, and represents companies and individuals working on green, blue and biosolar roofs. Work on the GRO Green Roof Code of Best Practice for the UK began in 2009 with the first edition published in 2011, significantly based on the German FLL guidelines adapted to the UK market, expanded in a 2014 edition with clarifications and installation detail, and most recently issued as the 2021 anniversary edition available from the organisation's downloads section. The Code is the reference document manufacturers, contractors, specifiers and standards bodies use for green roof design, installation and maintenance, and it is what a living roof note should cite rather than a supplier's page.
- good RN-7DPKIS
Insulation Manufacturers Association
The UK trade association for insulation manufacturers, representing PIR and PUR and phenolic foams, XPS and EPS polystyrene, glass wool and stone wool mineral wools and natural materials including sheep's wool, which is exactly the material set a best loft insulation comparison needs to cover. It publishes accredited CPD courses, installation and best practice guides and resources on thermal performance, fire safety and water resistance, with separate regulatory guidance for England, Wales, Scotland and Northern Ireland, and it maintains reference pages on thermal conductivity, R-values and U-values.
- good RN-YEI1QQ
Liquid Roofing and Waterproofing Association
The UK trade association for liquid applied waterproofing, founded in 1979, bringing together manufacturers, contractors and installers of liquid applied membranes. It publishes technical guidance and standards for the sector, including a Hot Melt Code of Practice updated to reflect BS 6229:2025, fire safety resources and a Liquid Roofing Finder product register. It is the body to cite for liquid systems (including GRP and polyurethane) in a flat roof comparison, alongside SPRA for single ply.