Home  5  Books  5  GBEzine  5  News  5  HelpDesk  5  Register  5  GreenBuilding.co.uk
Not signed in (Sign In)

Categories



Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

Buy individually or both books together. Delivery is free!


powered by Surfing Waves




Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to new Forum Visitors
Join the forum now and benefit from discussions with thousands of other green building fans and discounts on Green Building Press publications: Apply now.




    • CommentAuthorPord
    • CommentTimeOct 22nd 2018
     
    Afternoon all

    We're about to DIY build a strawbale house in Scotland and have one final matter to agree with Building Control - treatment of the solum - before we obtain Building Warrant.

    Straw Works have been pushing for a free draining solum of compacted hardcore under the suspended insulated timber floor. However, BC want either a dpm treated with bitumen on 100mm hardcore, or 50mm concrete on top of a dpm, or 100mm concrete.

    We're trying to keep the build as uncomplicated, affordable and sustainable as possible, so are still leaning towards the option of treated dpm on 100mm hardcore. Has anyone any experience of this? How technical/affordable a process is it?

    Muchos ta in advance for any input.
    •  
      CommentAuthordjh
    • CommentTimeOct 22nd 2018
     
    Is this a Scottish Building regs matter? Page 10G appears to match exactly what BC are asking for, so you may have a hard job persuading them of anything different. What reasons do Straw Works give for variation and in particular, what evidence do they have in Scotland that what they suggest is a reasonable alternative?
    • CommentAuthorPord
    • CommentTimeOct 22nd 2018
     
    Yes, it is a Scottish Building Regs matter in as much as it's the Building Control officer who's asking for it. The thinking behind the harcdore alone is to make the solum free draining. SW have apparently successfully used this approach on numerous similar builds in England.

    Where would I find page 10G?
    •  
      CommentAuthordjh
    • CommentTimeOct 22nd 2018 edited
     
    I found it at <http://www.south-ayrshire.gov.uk/buildingstandards/standards/part g.pdf>

    I believe from some of the things said in that document that the Scots believe conditions in Scotland are different to those in England* and so the regs are different. Hence why I asked about evidence in Scotland.

    * and I suspect they're right! :bigsmile:

    PS note that the forum software has mangled the URL. It does have a space in it.

    edit: Also, what are your foundations?
    • CommentAuthorPord
    • CommentTimeOct 22nd 2018
     
    Ah, ok. I'm familiar with those guidelines. My question is specifically how best to treat the dpm in example 3.5 Suspended timber floors (the one with the dpm on top of 100mm hardcore). Our BCO says it has to have some sort of bitumen finish to comply with section 3 CP102: 1973.

    The foundations are rammed (pea shingle) tyres.
    •  
      CommentAuthordjh
    • CommentTimeOct 23rd 2018
     
    Sorry, I have no idea what CP102: 1973 says. It seems crazy to me that we're required to pay to see rules we're required to obey. :angry:
    • CommentAuthorskyewright
    • CommentTimeOct 23rd 2018
     
    Posted By: djh
    I believe from some of the things said in that document that the Scots believe conditions in Scotland are different to those in England* and so the regs are different. Hence why I asked about evidence in Scotland.

    * and I suspect they're right!

    I recall reports of housing stock surveys that listed lots of cases damp solums, some even had water running across the surface!
Add your comments

    Username Password
  • Format comments as
 
   
The Ecobuilding Buzz
Site Map    |   Home    |   View Cart    |   Pressroom   |   Business   |   Links   
Logout    

© Green Building Press