RenovationNotes

References

Roofing Materials

303 sources in the library on roofing materials. 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 5 of 8.

  1. fair RN-AV2T1E

    Bat Conservation Trust

    How to keep a roost usable after roof works. Access gaps for the small building dwelling species are very small, since those bats land on the building and crawl in, and are usually invisible on the finished building; horseshoe bats are the exception and need a larger letterbox style opening sized to the species, because they fly straight in. Access should normally be recreated as close as possible to its original position so the bats return. Practical detail for tiled and slated roofs: raise a tile slightly on a timber batten or a small piece of tile, and where needed cut a hole in the roofing felt directly beneath the access point, or make a Morris bat slate from spare lead flashing, which is cheap and can be done in house. Access can normally be formed without letting in weather or spoiling the appearance.

  2. fair RN-3SSVW3

    Bat Conservation Trust

    How to establish whether a building holds a roost before work starts. A roost is any place a bat uses for shelter or protection, regardless of species, numbers or how long it is used, and is protected all year round whether or not bats are present, because bats are loyal to roosts and return at the same time each year. Bats build no nest and cause no damage, using existing cracks and crevices, and move between roosts through the year as their needs change. Look for droppings, and watch for emergence at around sunset, or up to an hour after, during May to September, or run a dawn re entry survey where the access point is unknown. Local bat groups and local records centres may hold records, but the absence of a record does not mean there is no roost. Warns against disturbance during hibernation, when waking bats burns reserves they may not replace before spring, and during the summer maternity season, when disturbed mothers may abandon a pup, of which there is typically only one a year.

  3. fair RN-0F0NNT

    Bat Conservation Trust

    The membrane rule for a roof used by bats, developed with Natural England, Natural Resources Wales and NatureScot. Only bituminous roofing felt containing no polypropylene or polyethylene filaments should be installed, for example bitumen felt type 1F, which is hessian reinforced; it is dark coloured with a rough surface bats can grip. Sarking boards are an acceptable alternative. Non bitumen coated roofing membranes, previously called breathable or modern roofing membranes, BRMs or MRMs, must not be used, because their spun bond polypropylene or polyethylene filaments can be pulled out by roosting bats and entangle them. States plainly that non bitumen coated membranes are not obligatory under any Building Regulations, and that ventilation is still required whichever felt is used, citing BS 5250:2011.

  4. fair RN-IBBQUM

    Bat Conservation Trust

    Timing constraints on work to a building with a bat roost. Work is commonly advised to be scheduled either in April, or between mid September and the end of October, when bats are least likely to be present, though the exact window depends on the roost and species. If the timings recommended by the statutory nature conservation organisation cannot be met, the roost owner may need to engage an ecological consultant and obtain a licence. Bats should be factored in from the earliest stage of planning. The free National Bat Helpline is 0345 1300 228. The section also flags the four recurring requirements: creating bat access, roofing membrane choice, cladding, soffits and fascias, and solar panels.

  5. fair RN-I3ZJRS

    Cardiff University, Welsh School of Architecture

    Five years of five-minute-interval monitoring of the SOLCER House, built 2015, the first affordable energy positive house in the UK. Measured results: total annual electricity imported from the grid 1,112 kWh against 1,458 kWh exported, an overall energy-positive performance of 346 kWh; the house exports 1.3 times more electricity than it consumes and imports about 25 per cent of its energy from the grid, mainly for heating in colder months; net carbon emissions around minus 179 kg per year; savings of up to £1,000 a year on energy bills. Build data a self-builder can use: 100 sq m, three bedrooms, built for £1,200 per sq m using locally sourced materials where possible. Design moves: photovoltaic panels form the south-facing roof and replace roof tiles, and a solar air heating system forms the first-floor external wall finish instead of render, so the generating technology substitutes for cladding rather than adding to it. Published in Energies, 2021. The work led the Welsh Government to invest £91 million in grants, producing over 1,400 affordable low carbon homes.

  6. fair RN-590EYW

    HomeOwners Alliance

    Roof condition, life and repair costs. A well maintained stone slate roof can last 100 years or more; RICS warns the common belief that felt flat roof coverings last only 10 to 15 years is a misconception, that felt roofs of that age can go on performing if maintained and protected with gravel or solar reflective paint, and recommends inspecting a flat roof twice a year in spring and autumn plus after storms. Checkatrade repair costs for a 1 m2 area: flat roof £100, pitched clay tile £180, pitched concrete tile £140, pitched slate £170, rising to £1,465, £1,245 and £1,395 respectively where the felt is replaced too. Flat roof repair about £100 per m2. Replacement tiles from about £200, flashing repair from about £250 a metre. Extra joists for an overloaded roof structure £1,000 to £2,000, and a waterlogged and sagging roof structure £5,000 to £12,000. Scaffolding adds about £625 a week, a rooflight £800 to £1,000. Building control approval is not required where less than 25% of a roof is renewed, and is required above that.

  7. fair RN-35XBZH

    Society for the Protection of Ancient Buildings

    Traditional lead plumbing jointing and pipe fabrication. Gives the solder table by tin to lead ratio and melting point: blowpipe solder 1:2 melting at 171.1 degrees C for delicate work, and tinman's solder 1:1 at 187.7 degrees C for copper bit jointing and tinning. Pipe working figures include bending pipe up to 50mm diameter with a metal bending spring, forming collars on soil and vent pipes up to 75mm, and techniques applied to lead pipe of 75mm to 150mm, with sand used as a former inside the pipe on larger sizes up to 150mm. Also covers cleaning a soiled area before soldering, using a wire drawn back and forth, and blowlamp work.

  8. fair RN-C8GJ2T

    Society for the Protection of Ancient Buildings

    Regional slating practice with the numbers a specifier needs. Head lap is specified either as a dimension, typically 75 or 100mm (3 or 4 inches), or as a proportion of slate length as in scantle slating, which economically reduces the lap as slates shorten toward the ridge; vertical slate cladding uses a smaller head lap of about 51mm (2 inches). Random slating is triple lapped so each slate is covered by the next course but one and the next course but two, adding an extra layer over double lapping and giving better resistance to driving rain and wind with narrower slates and side laps. Scantle slates run about 12 down to 8 or 6 inches (305 to 203 or 152mm); slates up to 457mm (18 inches) are used for cladding but above about 405mm (16 inches) weight on the fixing becomes a problem, and a 600mm (24 inch) slate would need a wasteful 200mm (8 inch) lap. Warns that specifying BS EN 12326-1 alone is unsafe because the standard has multiple conformity levels: a specification must state the level for water absorption (less than or more than 0.6%, with below 0.3% the most durable), thermal cycling (T1, T2 or T3) and sulphur dioxide exposure (S1, S2 or S3), with quarries providing certificates of conformity. Rust staining indicates oxidising metallic minerals and general whitening usually a high carbonate content.

  9. fair RN-CFWTEN

    University of Sheffield

    Modelled hydrological and microclimate results for retrofitting SuDS into an existing urban catchment on the River Don in Sheffield. Runoff for each scenario was modelled in MUSIC against four storms: a 30 year 60 minute design storm, a 100 year 60 minute design storm, the 04/10/2008 Sheffield storm at a 1.38 year return period, and the 13/06/2007 storm at a 15.97 year return period that preceded the June 2007 Sheffield floods. Findings: SuDS reduced both total runoff volume and peak flow rate from the site across the storms; the flood channel scenario gave greater flow reduction than the street-based scenario for almost all storms, cutting both total volume and attenuating the peak. Microclimate modelling in ENVI-met over a 12 hour summer day showed SuDS scenarios reduced local average air temperatures by up to 1C compared with the as-is case, including late in the day when the urban heat island is strongest, with evening relative humidity below 70 per cent at all sites. The practical caveat: the best-performing scenario needed a greater land area and could not be implemented incrementally, which is why SuDS have to be designed in early rather than added late.

  10. supplier figure RN-KDPRQG

    A. Proctor Group

    Variable resistance vapour control layer to BS EN 13984:2013. Roll sizes 1.5 m x 50 m and 3 m x 50 m; weight 110 gsm. Vapour resistance EN 12572 Sd 0.8 m to 60 m, varying with humidity so it is more vapour resistant in winter and more permeable in summer. Air permeability BS EN 12114:2000 0.00 m3/m2.hr at 50 Pa. Nail tear resistance EN 12310-1 MD 250 N, CD 270 N; tensile strength EN 12311-1 MD 350 N/50 mm, CD 280 N/50 mm; elongation MD and CD 20%. Reaction to Fire EN 13501-1 Class E. Passivhaus certified component. Revised February 2026, version 1.005.

  11. supplier figure RN-4LI0BN

    A. Proctor Group

    Air and vapour permeable water resistant pitched roof underlay to BS EN 13859-1:2010, with a meltblown core. Standard rolls 1 m x 50 m and 1.5 m x 50 m; mass per unit area 170 g/m2. Water vapour resistance Sd 0.015 m and vapour resistance 0.075 MNs/g to EN ISO 12572. Air permeability EN 12114 average 35 m3/m2.h at 50 Pa. Water penetration EN 1928 Class W1; hydrostatic head ISO 811 greater than 1 m, as recommended by NFRC Technical Bulletin 6. Tensile EN 12311-1 before ageing MD 330 N/50 mm, CD 270 N/50 mm; after ageing MD 280, CD 225. Elongation before ageing MD 56%, CD 68%. Reaction to Fire Class E to EN 13501-1 (EN 11925-2). Wind uplift complies with BS 5534; BBA Certificate 24/7147 for non ventilated warm and cold roofs, including roofs with solar PV, with no vapour control layer required. Can be left exposed up to three months of UV exposure.

  12. supplier figure RN-ESOKFL

    A. Proctor Group

    Low emissivity vapour control layer to BS EN 13984:2013. Roll sizes 1.5 x 50 m, 2.7 x 100 m and 3 x 100 m; base membrane mass per unit area minimum 121 g/m2. Emissivity EN 15976 less than 0.05, giving a claimed R value of 0.72 m2K/W when used with a minimum 19 mm service cavity. Sd value EN 1931 minimum 150 m. Resistance to water penetration EN 13111:2010 W1. Tensile force EN 12311-1 (modified with EN 13859-2:2014 Annex A) minimum MD 150 N/50 mm, CD 140 N/50 mm; elongation minimum MD 50%, CD 40%; tearing resistance minimum MD and CD 180 N. Reaction to Fire EN 13501-1 Class E.

  13. supplier figure RN-W3TB7X

    A. Proctor Group

    Self adhered vapour permeable air barrier tested to BS EN 13859-1/2:2010. Roll 1.5 m x 50 m, roll weight 24 kg; tapes 75, 100, 150 and 300 mm. Nominal thickness 0.65 mm, basis weight 292 g/m2. Water vapour permeability EN ISO 12572 (C) Sd 0.039 m; water vapour transmission BS 3177:1959 893 g/m2 per 24 hr. Resistance to penetration of air EN 12114 0.01 m3/m2.h at 50 Pa. Water penetration EN 1928:2000 Method A Class W1 before and after ageing. Peel adhesion EN 1939 5.01 N/10 mm; tensile EN 12311-1 mean MD 417 N, XD 252 N; tear EN 12310-1 mean MD 412 N, XD 286 N; flexibility no cracks at -40 C. Installation temperature -10 to +60 C, service -40 to +100 C, can be left exposed up to 120 days in the UK. Reaction to Fire Class B-s1,d0 to EN 11925-2 / BS EN 13501-1, tested over 12 mm calcium silicate or fibre cement board per BS EN 13238:2010 and free hanging. BBA Certificate No. 15/5274, Passive House Institute certified component.

  14. supplier figure RN-E4QY9I

    Alumasc Water Management Solutions

    Alumasc GX pressed aluminium gutters. Joggle joint profiles: 100 x 75mm GXJ1, 125 x 100mm GXJ2, 150 x 100mm GXJ3, 180 x 125mm GXJ4, 200 x 150mm GXJ5. Smooth profiles: 120 x 75mm GXS1, 140 x 100mm GXS2, 190 x 125mm GXS3, 220 x 150mm GXS4, 225 x 150mm GXS5. Moulded: 113 x 75mm GXM1. Finished with a BBA approved polyester powder coating applied in Alumasc's own facility.

  15. supplier figure RN-XIH1L5

    Alumasc Water Management Solutions

    Alumasc Heritage cast aluminium gutter range, sized in imperial-derived profiles. Half round: 100mm (4 in) HR1, 113mm (4.5 in) HR2, 125mm (5 in) HR3, 150mm (6 in) HR6, plus beaded half round 113mm BHR5 and 125mm BHR6, and 113 x 75mm (4.5 x 3 in) HR4. Ogee: 100mm (4 in) OG1, 113mm (4.5 in) OG2, 125mm (5 in) OG3. Moulded: 100 x 75mm (4 x 3 in) MG2, 125 x 100mm (5 x 4 in) MG1, 150 x 100mm (6 x 4 in) MG3.

  16. supplier figure RN-Z13G0C

    BMI Group (Redland)

    BMI Redland 49 concrete profile tile. Size 382 x 226mm, hanging length approx 360mm, linear cover 200mm. Minimum pitch and headlap: through-coloured 17.5 degrees at 100mm headlap or 25 degrees at 75mm headlap; granular 22.5 degrees at 100mm headlap or 30 degrees at 75mm headlap, so the granular finish costs 5 degrees of pitch. Maximum pitch 90 degrees, maximum headlap 125mm. Minimum gauge 257mm; maximum gauge 282mm below 25 degrees (30 degrees granular), 307mm above. Covering capacity 17.7 tiles/m2 at 282mm gauge, 16.3 at 307mm. Weight 51 kg/m2 at 282mm gauge, 47 kg/m2 at 307mm; 2.86 tonnes per 1000, 1.01 tonnes per pallet of 336 tiles. Battens 3.26 m/m2. Nails 50 x 3.35mm aluminium.

  17. supplier figure RN-747KF8

    BMI Group (Redland)

    BMI Redland Cambrian Slate, an interlocking slate engineered from reclaimed natural Welsh slate, BBA certificate 87/1907. Size overall 330 x 336mm, hanging length approx 294mm, linear cover 300mm. Minimum pitch 15 degrees at 75mm headlap or 25 degrees at 50mm headlap, based on a maximum rafter length of 10 metres; maximum pitch 90 degrees. Minimum headlap 50mm, maximum 90mm. Minimum gauge 210mm; maximum gauge 225mm below 25 degrees, 250mm at 25 degrees and over. Covering capacity 14.8 slates/m2 at 225mm gauge, 13.3 at 250mm. Weight only 18 kg/m2 at 225mm gauge and 17 kg/m2 at 250mm gauge, roughly a third of a concrete interlocking tile; 1.24 tonnes per 1000 slates, 0.76 tonnes per pallet. Battens 4.0 m/m2. Stainless steel annular ring shank nails 30 x 2.65mm. 600 slates per pallet, 10 per pack.

  18. supplier figure RN-SKA7QL

    BMI Group (Redland)

    BMI Redland Regent concrete profile tile, ref RED_TDS_2203. Size 418 x 332mm, hanging length approx 397mm, linear cover 300mm. Minimum pitch and headlap for through-coloured tiles 12.5 degrees at 100mm headlap or 17.5 degrees at 75mm headlap; where the roof slope includes inclined valleys the minimum is 15 degrees, and the datasheet warns that a roof window may impose its own higher minimum pitch. Maximum pitch 90 degrees, maximum headlap 125mm. Minimum gauge 293mm; maximum gauge 318mm below 17.5 degrees and 343mm at 17.5 degrees and over. Covering capacity 10.5 tiles/m2 at 318mm gauge, 9.7 tiles/m2 at 343mm gauge. Weight 46 kg/m2 at 318mm gauge, 43 kg/m2 at 343mm gauge; approximately 1.18 tonnes per pallet and 4.43 tonnes per 1000 tiles. Battens 2.92 m/m2, 38 x 25mm to 450mm rafter centres, 50 x 25mm to 600mm centres.

  19. supplier figure RN-MLLZFA

    Brett Martin Plumbing and Drainage

    Brett Martin Cascade cast iron effect rainwater system, four gutter profiles each tied to a specific downpipe: Prostyle 106mm ogee uses a 65mm square downpipe; Roundstyle 112mm half round uses a 68mm round downpipe; Deepstyle 115mm semi-elliptical high capacity uses a 68mm round downpipe; Deepstyle 170mm, the high capacity heritage profile for large roof areas, uses a 105mm round or 100 x 75mm rectangular downpipe. Corner (square section) 68mm downpipes are available for Roundstyle 112mm and Deepstyle 115mm.

  20. supplier figure RN-01X805

    Buckland Timber

    Buckland make GL24h glulam from imported timber and GL20h from home grown UK timber, to BS EN 14080:2013. Characteristic values in N/mm2: GL20h bending 20, tension parallel 16, tension perpendicular 0.5, compression parallel 20, compression perpendicular 2.5, shear 3.5, E0,mean 8400, E0,05 700, E90,mean 300, Gmean 650, density 370 kg/m3. GL24h bending 24, tension parallel 19.2, E0,mean 11500, E0,05 9600, density 420 kg/m3. GL28h bending 28, tension 22.3, E0,mean 12600, density 460 kg/m3. GL30h bending 30, E0,mean 13600. Standard widths 100 to 520 mm; appearance grades govern crack tolerance, with top layer cracks up to 2 mm accepted on the middle grade. Span table for simply supported GL24h beams, allowable span in metres by section and load width: 100 x 200 spans 3.22 m as a floor beam at 2 m load width and 3.76 m as a roof beam; 140 x 400 spans 7.20 m floor and 8.41 m roof at 2 m; 160 x 480 spans 9.08 m floor and 10.56 m roof at 2 m, falling to 6.89 m and 8.05 m at 4.5 m load width. Beams available up to 235 x 1600 mm x 25 m.

  21. supplier figure RN-IZJ046

    Catnic (Tata Steel UK)

    CGE90/100 closed eaves lintel, cavity 90-125 mm, inner leaf 100-115 mm, no outer leaf, standard duty. SWL total UDL on 150 mm end bearings: 20 kN from 750 mm to 1500 mm, 22 kN at 1650-2100 mm, 20 kN at 2400 mm and 2700 mm. Nominal height 97 mm to 1500 mm, 117 mm to 2100 mm, 118 mm above. Weight 4.96 kg at 750 mm to 28.51 kg at 2700 mm. Lengths in 150 mm increments to 1800 mm then 300 mm increments to 2700 mm.

  22. supplier figure RN-VOWH3Z

    Dreadnought Tiles (Wienerberger UK)

    Dreadnought clay plain tiles from Etruria Marl. Machine-made and rustic range: tile 265 x 165mm weighing 1.19 kg, eaves tile 215 x 165mm at 0.95 kg, gable tile-and-a-half 265 x 248mm at 1.8 kg; 1000 tiles per pallet (1190 kg). Classic handmade range is heavier: 1.51 kg per tile, eaves 1.2 kg, gable 2.3 kg, 730 per pallet. Pitched roofs: minimum lap 65mm, maximum gauge 100mm, giving 60 tiles/m2 and an approximate laid weight of 71 kg/m2 for the Dreadnought range and 90 kg/m2 for the Classic handmade range. Vertical tiling: minimum lap 35mm, maximum gauge 115mm, 53 tiles/m2, 63 kg/m2 Dreadnought and 80 kg/m2 Classic. Minimum pitch 35 degrees. Nails 38 x 2.65mm alloy, battens 38 x 25mm. Eaves/tops 6 per linear metre; tile-and-a-half 5 per linear metre of verge; hips and valleys 10 per linear metre. Ridges supplied 300mm and 450mm. Tiles conform to BS EN 1304:2013; Dreadnought tests to over 400 freeze-thaw cycles against the 150 cycle minimum of EN 539-2:2013 method E.

  23. supplier figure RN-HP8FSO

    EcoTherm Insulation (Kingspan Insulation Ltd)

    Rigid PIR flat roof board to BS EN 13165: 2012 + A2: 2016 for bonded warm roof build ups. Sizes: 25 mm boards 1200 x 600 mm (0.72 m2), 50 to 160 mm boards 1200 x 1200 mm (1.44 m2); greater thicknesses achieved with two layers. Lambda by thickness: 0.027 W/mK at 25 to 79 mm, 0.025 W/mK at 80 to 119 mm, 0.024 W/mK at 120 mm and above. Average compressive stress exceeds 150 kPa at 10% compression to BS EN 826: 2013. Boards are installed over a vapour control layer or sealed metal deck, with BS 5250: 2021 and BS 6229: 2018 to be considered. Fire: under System 4 AVCP, Eco-Bond has a Euroclass rating of F; without a roof system classification from an external roof exposure test or an inorganic overlay, use must be restricted to at least 20 metres in England and 24 metres in Scotland from any point of the relevant boundary.

  24. supplier figure RN-8VS6KG

    EcoTherm Insulation (Kingspan Insulation Ltd)

    Rigid PIR flat roof board for mechanically fixed membranes, to BS EN 13165: 2012 + A2: 2016. Flat boards 2400 x 1200 mm (2.88 m2), thicknesses 25 to 160 mm, with greater thicknesses achieved in two layers. Thermal conductivity 0.022 W/mK. Average compressive stress exceeds 150 kPa at 10% compression to BS EN 826: 2013. Water vapour resistance to BS EN 12086 of 300 MNs/g for the insulation core and 80 MNs/g for the composite foil facing (Pembridge and Selby production). BBA Certificate No 24/7272. Fire: under System 4 AVCP, Eco-Fix has a Euroclass rating of F.

  25. supplier figure RN-P8XZXG

    EcoTherm Insulation (Kingspan Insulation Ltd)

    General purpose foil faced rigid PIR board to BS EN 13165: 2012 + A2: 2016. Thermal conductivity 0.022 W/mK. Declared compressive stress 120 kPa at 10% compression to BS EN 826. Manufactured range 25 to 150 mm, covered by BBA Certificate No 24/7114, made at Pembridge and Selby. Published R-values (m2K/W) with board weights: 25 mm 1.10 (3.38 kg), 30 mm 1.35, 40 mm 1.80, 50 mm 2.25 (5.62 kg), 60 mm 2.70, 70 mm 3.15, 75 mm 3.40, 80 mm 3.60, 90 mm 4.05, 100 mm 4.50 (10.08 kg), 110 mm 5.00, 120 mm 5.45, 125 mm 5.65, 130 mm 5.90, 140 mm 6.35, 150 mm 6.80 (14.54 kg). Maximum board span 600 mm when fixed to timber framing, metal channels, rafters or battens. Fire: Eco-Versal has a Euroclass rating of F.

  26. supplier figure RN-50LZ8R

    FAKRO GB Ltd

    FAKRO DXA (fixed) and DEA (solar opening, with insect screen, rain sensor and PV panel as standard) renovation flat roof skylights, for flat roofs with pitches from 0 to 15 degrees, made of aluminium and plastic with single or double chamber glazing. Two U-figures are published side by side: Urc (the whole rooflight assembly) of 1.3 W/m2K at a reference area of 3.8 m2 and 1.1 W/m2K at 3.85 m2; and skylight U-factors of 1.7 W/m2K with a 4HT10-Tg14Ar-33.2 single chamber unit and 1.5 W/m2K with a 4HT10-Tg10Ar-4H-Tg8Ar-33.2 double chamber unit.

  27. supplier figure RN-G9MCD3

    FAKRO GB Ltd

    FAKRO DXW walk-on flat roof window for terraces and flat roofs, sitting flush with the roof covering, with a reinforced frame, anti-slip coating and a laminated outer pane. Whole-window U-value 0.70 W/m2K and centre-pane glazing Ug 0.5 W/m2K. Glazing build-up 888.44 (1 x ESG, 2 x TVG) - Tg16Ar - 4HT - Tg18Ar - 66.2T, a double-chamber (triple glazed) passive unit with 16mm and 18mm argon-filled cavities and warm-edge spacers. Frame profiles are filled with insulating material.

  28. supplier figure RN-W3CTLO

    FAKRO GB Ltd

    FAKRO flat roof windows. Type F with a triple chamber DU8 glazing unit: heat transfer coefficient U = 0.64 W/m2K measured to EN 14351-1, suitable for energy-efficient and passive buildings. Type C with a triple chamber passive U8 (VSG) unit and dome: U = 0.55 W/m2K measured to EN 1873 at a size of 120 x 120cm, a figure that covers the entire window including frame, sash and dome (the two standards are different bases, which is why the numbers must not be compared naively). Secure type flat roof windows comply with burglary resistance class RC 2 to EN 1627; glazing units carry the highest impact resistance class for hail; reaction to fire class B to PN-EN 13501-1. Units available with single, double and triple chamber glazing.

  29. supplier figure RN-ECW9QA

    FAKRO GB Ltd

    FAKRO PTP and PTP-V PVC pivot roof windows, suitable for roof pitches 15-90 degrees. Whole-window Uw and centre-pane Ug are quoted separately, which matters because they are often confused. U5 glazing unit 4HT-10-4H-10-4HT with toughened outer pane: Uw 1.0 W/m2K, Ug 0.5 W/m2K, 34 dB Rw; Uw improves to 0.9 W/m2K when installed with the EHV-AT Thermo insulated flashing rather than a standard flashing. U4 glazing unit 4HT-12-4-12-4T: Uw 1.1 W/m2K, Ug 0.7 W/m2K, 34 dB Rw; Uw 1.0 W/m2K with the EHV-AT Thermo flashing. U3 glazing: Uw 1.3 W/m2K, Ug 1.0 W/m2K, 32 dB Rw. P2 safety variant 33 dB Rw. The flashing choice is therefore worth 0.1 W/m2K on the installed window.

  30. supplier figure RN-0MASQJ

    FloPlast Limited

    FloPlast rainwater flow capacities calculated to BS EN 12056-3, effective roof area based on the Building Regulations value of 0.022 l/s per m2. Outlet at END of run, gutter fixed LEVEL (max flow rate l/s, then BS 12056 rate, then roof area m2 for each): Half Round with 68mm round downpipe 0.92 / 0.82 l/s, 44 / 40 m2; Square Line with 65mm square downpipe 1.70 / 1.53 l/s, 81 / 73 m2; Hi-Cap with 68mm downpipe 2.05 / 1.84 l/s, 98 / 88 m2; Hi-Cap with 80mm downpipe 2.25 / 2.02 l/s, 108 / 97 m2; Niagara ogee with 65mm square 2.40 / 2.16 l/s, 115 / 104 m2; Niagara with 80mm round 2.64 / 2.37 l/s, 127 / 114 m2; XtraFlo with 110mm downpipe 4.30 / 3.87 l/s, 206 / 185 m2. Laying the gutter to a 1:350 fall raises Half Round to 1.17 l/s / 56 m2 and Hi-Cap 68mm to 2.56 l/s / 123 m2. Moving the outlet to the CENTRE of the run roughly doubles capacity: Half Round level 1.80 l/s / 86 m2, Hi-Cap 68mm 3.80 l/s / 182 m2, XtraFlo 8.20 l/s / 393 m2, and at 1:350 fall Half Round 2.60 l/s / 125 m2 and XtraFlo 11.80 l/s / 566 m2. Reduced capacities apply where bends are incorporated. Systems carry BSI Kitemark KM501316 to BS EN 607 (PVC-U eaves gutters), BS EN 12200-1 and BS EN 1462 (brackets); MiniFlo gutter and the painted Cast Iron style range are excluded from the Kitemark.

  31. supplier figure RN-7RE0C3

    FloPlast Limited

    FloPlast white PVC-UE roofline range. Four fascia profiles with different thicknesses and roles. Universal Fascia Board 9mm, widths 100, 150, 175, 200, 225, 250, 275, 300 and 354mm plus 450mm, intended for refurbishment capping over existing timber. Ogee Fascia Board 10mm, widths 150, 175, 200, 225, 250, 404mm, a decorative alternative to the Universal. Mammoth Board 18mm, widths 150, 175, 200, 225, 250, 300 and 404mm, which does not need a backing board because of its rigid linear strength and thickness, so it can be fixed directly to the rafter ends in new build. Ogee Mammoth Board 18mm is the decorative version of the Mammoth. The 9mm/18mm distinction is the one that decides whether the old timber fascia has to stay in place.

  32. supplier figure RN-Y4F6J0

    Glazing Vision Ltd

    Glazing Vision Flushglaze circular rooflight. Tested to air permeability EN 12207 Class 4 at +600 Pa and water tightness EN 12208 Class 9A at 600 Pa; minimum recommended pitch 5 degrees for standard units. Security: tested to LPS 2081 Issue 1:2015, approved by the Loss Prevention Certification Board (Cert/LPCB reference 1347a) and Secured by Design. Security Rating A requires an inner pane of at least 8.8mm PVB laminated glass (two 4mm panes with a 0.8mm PVB interlayer); Security Rating B requires at least 9.5mm ionomer laminated glass (two 4mm panes with a 1.5mm ionomer interlayer).

  33. supplier figure RN-BXFQVE

    Glazing Vision Ltd

    Glazing Vision Flushglaze fire rated rooflight: minimum upstand pitch 3 degrees, maximum 10 degrees, with at least 5 degrees recommended for standard units, so it is a flat-roof-only product unlike the standard Flushglaze which goes to 70 degrees. Structural integrity verified by finite element analysis and testing.

  34. supplier figure RN-F361VU

    Glazing Vision Ltd

    Glazing Vision Flushglaze Eaves rooflight, a fixed rooflight designed to run out to the edge of a flat roof: width 400mm to 2000mm.

  35. supplier figure RN-VN6FVL

    Glazing Vision Ltd

    Glazing Vision Flushglaze fixed rooflight. Span from 400mm to 8626mm and width 400mm to 8626mm. Minimum upstand pitch 3 degrees, maximum 70 degrees, with at least 5 degrees recommended for standard units (above 70 degrees a roof window is needed instead). Tested at 2000mm span x 2500mm width at 0 degrees pitch: air permeability EN 12207 Class 4 at +600 Pa, water tightness EN 12208 Class 9A at 600 Pa. Security Rating A requires an inner pane of at least 8.8mm PVB laminated glass (two 4mm panes with a 0.8mm PVB interlayer); Security Rating B requires at least 9.5mm ionomer laminated glass (two 4mm panes with a 1.5mm ionomer interlayer). Structural performance verified by finite element analysis and testing.

  36. supplier figure RN-5BPXPN

    Glazing Vision Ltd

    Glazing Vision Flushglaze Multi-Part rooflight, which links panels for large openings: span 400mm to 4131mm. Minimum upstand pitch 3 degrees, maximum 70 degrees, at least 5 degrees recommended. Air permeability EN 12207 Class 4 at +600 Pa, water tightness EN 12208 Class 9A at 600 Pa. Tested to LPS 2081 Issue 1:2015, approved by the Loss Prevention Certification Board (Cert/LPCB reference 1347a) and Secured by Design.

  37. supplier figure RN-E1RXPB

    Glazing Vision Ltd

    Glazing Vision Flushglaze Walk On rooflight, toughened laminated glass designed for regular foot traffic in UK domestic use, tested to uniform loading of 1.5 kN/m2 and concentrated loading of 2.0 kN in accordance with EN 1991-1-1:2002. Span and width both 400mm to 8626mm. Minimum upstand pitch 1 degree (recommended pitch 1 degree for standard units), maximum 70 degrees. Tested at 2000 x 2500mm at 0 degrees: air permeability EN 12207 Class 4 at +600 Pa, water tightness EN 12208 Class 9A at 600 Pa. Security Rating A needs an inner pane of at least 8.8mm PVB laminated glass; Rating B needs at least 9.5mm ionomer laminated glass.

  38. supplier figure RN-58CW09

    Glazing Vision Ltd

    Glazing Vision Flushglaze Wall Abutted rooflight, designed to run up to and against a wall: span 400mm to 4131mm. Minimum upstand pitch 3 degrees, maximum 70 degrees, at least 5 degrees recommended for standard units. Security Rating A requires an inner pane of at least 8.8mm PVB laminated glass (two 4mm panes with a 0.8mm PVB interlayer); Rating B requires at least 9.5mm ionomer laminated glass (two 4mm panes with a 1.5mm ionomer interlayer).

  39. supplier figure RN-Z28L29

    Glazing Vision Ltd

    Glazing Vision free-standing SkyBox rooflight: span 1300mm to 3500mm, upstand pitch 0 degrees minimum and maximum. Tested to air permeability EN 12207 Class 2 at plus/minus 300 Pa, watertightness EN 12208 Class 7A at 300 Pa, and wind resistance EN 12210 Class C3 at +2400/-1200 Pa serviceability and +3200/-1250 Pa safety. Note these classes are lower than the flat Flushglaze range (Class 4 at 600 Pa, Class 9A at 600 Pa), which matters on exposed sites. Each unit is internally weather tested to BS EN 12207 before delivery.

  40. supplier figure RN-H8WZLL

    Glazing Vision Ltd

    Glazing Vision lantern rooflight: span 600mm to 1500mm, width 650mm to 2500mm. Minimum and maximum upstand pitch both 0 degrees, meaning the lantern sits on a level upstand and sheds water through its own pitched form rather than through a sloping kerb. Thermally broken framework, optional easy clean coating and trickle vents.