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Apr 03, 2024 •224 likes •813 views

CPD Why gutters fail and the options to repair, replace and refurbish: A specifiers guide Josh Hamer Technical Services Manager Agenda Introduction Why gutters fail Decision to repair, replace or refurbish System comparisons

  1. CPD Why gutters fail and the options to repair, replace and refurbish: A specifier’s guide Josh Hamer Technical Services Manager

  2. Agenda Introduction • Why gutters fail • Decision to repair, replace or refurbish • System comparisons • Practical demonstration • Technical reference and support • Q&A and close •

  3. Introduction Refurbishment Pitched roofs Commercial & industrial buildings

  4. Market leader: In the last 5 years 1 million metres of system installed 10,000 UK commercial properties 1,000 Trained Contractors 40% Market growth

  5. Why gutters fail

  6. Why gutters fail Weather

  7. Weather New BS EN 12056-3 : 2000 introduced Weather UK changing weather profile Rainfall (cm) 1.35 UK Rainfall past 100 years Poor maintenance Old gutter systems may not Average PEAK RAINFALL 1910 – 1990 = 1165mm 1.30 PEAK RAINFALL Average PEAK RAINFALL 1990 – 2013 = 1310mm cope with the changing weather profiles 1.25 Corrosion which previous BS EN recognised 1.20 Building movement 1.15 AVERAGE RAINFALL 1.10 Freeze -thaw 1.05 1.00 Initial installation 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 2013 Source: Telegraph weather. co.uk

  8. Why gutters fail Poor maintenance

  9. Poor maintenance Debris restricting water flow Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  10. Poor maintenance Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  11. Poor maintenance Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  12. Poor maintenance Blockage Outlet Gutter Pressure Weather Tail Pipes Poor maintenance Corrosion Lateral Building pipe system movement Drop pipe Freeze -thaw Discharge Initial installation

  13. Poor maintenance Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  14. Why gutters fail Corrosion

  15. Corrosion Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  16. Corrosion Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  17. Corrosion Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  18. Corrosion Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  19. Why gutters fail Building movement

  20. Structural movement Weather • Settlement • Lateral (Wind) Poor maintenance loads + and - • Service loads Corrosion • Accidental loads Building • Variable (Snow) movement loads Freeze -thaw Initial installation

  21. Structural movement Steel Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  22. Thermal movement Weather Material α (m/ ° C/m) Poor maintenance 1.7 x10 -5 Copper Corrosion 1.2 x10 -5 Steel 2.3 x10 -5 Aluminium Building movement 1.9 x10 -5 Brass Freeze -thaw Initial installation

  23. Thermal movement Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  24. Structural/thermal Repair Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  25. Why gutters fail Freeze-thaw

  26. Freeze-thaw Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  27. Freeze-thaw Site formed Weather Poor maintenance Corrosion ICE Building movement Freeze -thaw Initial installation

  28. Why gutters fail Initial installation

  29. Why gutters fail Initial installation Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  30. Why gutters fail Services Weather Poor maintenance Corrosion Building movement Freeze -thaw Initial installation

  31. Why gutters fail

  32. Repair, replace & refurbishment options Weather Poor maintenance Building movement Freeze -thaw Initial installation

  33. Repair Weather • Temporary Poor maintenance • Short term solution • Not Guaranteed Building movement Initial installation

  34. Replace • Integral to roofing system

  35. Replace • Roof removal • Costs • Extra health & safety • Time • Disruption

  36. Refurbishment • Minimal disruption to building • Minimal disruption to owner / tenant • Quicker

  37. System comparisons

  38. System comparisons Applied liquids

  39. Applied liquids WEATHER BBA CERTIFIED FACTORY MADE SYPHONIC PRIMERS AND SEAMLESS SOLEBOARDS DEPENDENT FOR GUTTERS COMPONENTS KITS ADHESIVES INSTALLATION Applied liquids LIQUID NO ý YES þ NO þ NO ý NO ý YES ý YES ý MEMBRANE Bonded membranes Advantages Disadvantages • They are seamless and installed to the full • Substrate has to be clean and dry so Fold out profile of the existing gutter installation is totally weather dependent system and labour intensive • Copes with intricate or complex shapes • Cannot usually be applied over previously installed repairs or other types of systems Loose lay system • Quality of workmanship needs to be of a very high standard • Still subject to building stresses

  40. Applied liquids Applied liquids Bonded membranes Fold out system Loose lay system

  41. System comparisons Bonded membranes

  42. Bonded membranes WEATHER BBA CERTIFIED FACTORY MADE SYPHONIC PRIMERS AND SEAMLESS SOLEBOARDS DEPENDENT FOR GUTTERS COMPONENTS KITS ADHESIVES INSTALLATION Applied liquids BONDED NO ý YES þ NO þ NO ý NO ý YES ý YES ý MEMBRANE Bonded membranes Advantages Disadvantages • Seamless and installed to full • Weather dependent for installation and on the Fold out profile of the existing gutter substrate prep being clean and dry system • Can also be used to increase • Cannot usually be applied over other systems as it capacity relies on successful bonding Loose lay • Components such as corners and side boxes need to system be site formed (cut and shut) • Complicated outlets such as syphonics are ignored and left cut around which then relies on the bonding to ensure water doesn’t get under the membrane

  43. Bonded membranes Applied liquids Bonded membranes Fold out system Loose lay system

  44. System comparisons Fold out system

  45. Fold out system WEATHER BBA CERTIFIED FACTORY MADE SYPHONIC PRIMERS AND SEAMLESS SOLEBOARDS DEPENDENT FOR GUTTERS COMPONENTS KITS ADHESIVES INSTALLATION Applied liquids FOLD OUT NO ý NO ý YES ý YES þ YES þ YES ý YES ý SECTION Bonded membranes Advantages Disadvantages • Components such as outlets, corners, side • Is not seamless and relies on jointing by Fold out boxes and syphonic kits are factory formed bonding sections together system • The membrane bonded to the sections can • Sole boards need to be installed to remove be increased to extend up under the roof the height of the bolts, this reduces the capacity of the gutter Loose lay system • Design limited • Weather dependant installation

  46. Fold out system Applied liquids Bonded membranes Fold out system Loose lay system

  47. System comparisons Loose lay system

  48. Loose lay system WEATHER BBA CERTIFIED FACTORY MADE SYPHONIC PRIMERS AND SEAMLESS SOLEBOARDS DEPENDENT FOR GUTTERS COMPONENTS KITS ADHESIVES INSTALLATION Applied liquids LOOSE LAY YES þ YES þ NO þ YES þ YES þ NO þ NO þ SYSTEM Bonded membranes Advantages Disadvantages • Seamless, installed to full profile of the gutter, and • Most thermoplastics have a Fold out in some situations can be extended under the roof coefficient of thermal expansion in system to increase capacity. Any substrate, any size excess of the building. Ensure thermal movement of the liner is • Components; outlets, corners, sump boxes etc. restrained in line with together with syphonic kits are all factory formed Loose lay manufacturer’s guidelines. system • Prep work is kept to the minimum, and installation • Moves independently which with is less weather dependent the thermal expansion can cause • Totally flexible , independent from existing gutter, ponding. can cope with uneven shapes

  49. Loose lay system Applied liquids Bonded membranes Fold out system Loose lay system

  50. System comparisons

  51. Sharmans – who we are today Sharmans – who we are today Some milestones SHARMANS IN AN EXCLUSIVE PARTNERSHIP 12 GOLD RULES OF WITH DELVEMADE INSTALLATION NEW BRAND ENTER THE ROOF 2016 LAUNCHED 2016 COATING MARKET NEW PG SYSTEM Installation quality 2018 DEVELOPED 2016 Reposition Sharmans assurance marketing platform NEW OWNERSHIP Full system with 25 2013 year guarantee BBA launch ACCREDITATION PLYGENE 1999 Investment and GUTTERLINE expansion COMPANY LAUNCHED 1985 Market leading TRAINING CENTRE FOUNDED 1969 accreditation in the RE-LAUNCHED AND gutter environment Sharmans enter the WILTSHIRE CENTRE Developed expertise roofing market in thermoplastic OPENS 2017 extrusion Trained Contractor network established 1969 1985 1999 2013 2016 2016 2016/2017 2018

  52. Specifier: Project Support

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