Jump to content

Search the Community

Showing results for tags 'bitumous membrane'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • BuildHub Guide: Information about the site : Introduce Yourself
    • About BuildHub.org.uk
    • Introduce Yourself
  • Build Design, Planning, Finance and Legal
    • Building Plots, Land & Renovation Properties
    • Design & Architecture
    • Funding, Finance & Tax
    • Insurance, Legal and Warranties
  • House Construction & Structural Issues
    • House Construction
    • Conversions & Extensions
    • Roofing & Lofts
    • Structural Works, Foundations & Demolition
    • Insulation & Ventilation
    • Landscaping & Outdoor Buildings
    • Damp & Infestation
  • Building Trades
    • Plumbing & Heating
    • Bricklaying, Plastering, Concrete, Blocks & Rendering
    • Joinery, Windows & Doors
    • Floors & Flooring
    • Electrics, Lighting & Home Security
    • Decorating & Tiling
    • Kitchens & Bathrooms
    • Building Materials
  • Environmental, Alternative & Green Building Methods
    • Designing Energy Efficient & Sustainable Homes
    • Renewable Home Energy Generation
    • Research & Information Sources
    • Environmental Building Politics
    • Boffin's Corner
  • Self Build & DIY: General
    • General Self Build & DIY Discussion
    • Housing Politics
    • Property TV Programmes
    • Tools & Equipment
  • Self Build Regional Groups
    • UK
    • Europe

Blogs

  • Salamander Cottage
  • The House At Mill Orchard
  • An Orkney Build (in ICF)
  • The House at the Bottom of the Garden
  • Hawthorn House
  • Rose Lane re-build
  • East Kent Self Build
  • Wee Hoose on the Croft
  • God is in the Details
  • Tennentslager
  • Kentish RenoExtension
  • Scooby Cottage renovation.
  • The Seasalter Sharp House
  • sussexlogs
  • Sips and stones may break my bones...
  • Our Journey North of the Border
  • Construction in Cornwall
  • The Fun Irish (House)
  • A house! A house! My kingdom for a house!
  • South Devon Self Build
  • Lucy Murray
  • Coffee Towers
  • caliwag
  • caliwag
  • Blackmore House
  • A woodland house
  • Druim nan Darach
  • Escarpment to the countryside
  • Recoveringbuilder
  • Netherwood lakes
  • Kingseat
  • Mr and Mrs Triassics New Home
  • Yaffles
  • Wedding Cake Re-build
  • Clancutt Lodge
  • Self-Build in Shropshire
  • South coast ICF build
  • 5 (2 adults, 3 dogs) go building in Dorset
  • Hillcroft
  • Self Build NE Scotland
  • Timber Portal Frame - but stick built
  • Self Building two in North Wiltshire
  • 1970s Chalet-style house renovation
  • Under the Chestnut Tree
  • The Larch House
  • Building in a woodland on the Isle of Wight
  • Back on the self-build waggon...
  • Gardening in the Lockdown
  • The BuildHub Gardening Blog
  • West Sussex Forever Home
  • Testing
  • Canalside Bungalow Renovation
  • Holywood Passive ICF Build
  • Finchampstead Passivhaus
  • Albaston self-build
  • Little Stud Barn
  • East Cornwall Low Energy build
  • Scottish SIPS build
  • Gus Potter
  • Garden Escape
  • error
  • ASHP, MVHR, PV and EV combo
  • The Windy Roost
  • Wind! Yes I know but....
  • Big Bungalow Build!
  • A Rainfuel project

Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


About Me


Location

Found 1 result

  1. The builder is taking a rest... I've lost trust and am checking everything as it's all down to me now.. The rafters are 200mm. The original spec of the vaulted being was 200mm of sheeps wool, BUT we had to then change to F1 bituminous roofing membrane, non breathable, because of the bats and so was encouraged to change to PIR 150mm and a 50mm gap. Fair enough. However, I need to understand the detailing. On the SE diagram the steels are outside the thermal envelope, except for the one resting on the internal wall. (NB the vaulted ceiling will be the whole area, the diagram is slightly wrong as the design was amended, it seems to me that the vertical steel could go in or out of the thermal envelope). See photo: the steel is bolted to the wooden ‘beam’ of the roof ridge. This means non breathable membrane stops at the top there, so the gap is not contiguous with the ventilation things in the ridge tile. Unless I’m missing something, there’s an 50mm air gap but no actual air circulation. There’s nowhere for the air to be drawn in at the top. Surely non breathable membrane and 'plastic' insulation are a potential problem, even if there is a vapour barrier in the plaster board? I feel it needs air to be drawn over it somehow and not being able to inspect it bothers me. Do I need to change tack and think of a breathable house as its a conversion with all the associated compromises? Steel detail.pdf Steel in situ.pdf
×
×
  • Create New...