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


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.

    • CommentAuthormitchino
    • CommentTimeOct 6th 2020
    Not a green question but I'm about to clad a shed and was going to use 14.5mm treated T&G boards. After reading up I'm worried about contraction and expansion, and wondered if non T&G shiplap would be better? Looking at this product:

    • CommentAuthortony
    • CommentTimeOct 6th 2020
    I like 200 or 225 FE boards
    • CommentAuthorCWatters
    • CommentTimeOct 10th 2020
    Most of the movement is probably in the length not the width. I planked my outbuilding and at butt joints I fitted strips of DPM so that if gaps open they remain watertight. The excess DPC can be trimmed off after so you can't see it.
    • CommentAuthorjamesingram
    • CommentTimeOct 10th 2020 edited
    i was always told double nailing was the issue with shiplap and or nailing through the over lap with feather edge.
    One nail towards the bottom 1/3rd of the profile holds the upper well and secures the lower thin top edge.
    this allows expansion.
    • CommentAuthortony
    • CommentTimeOct 10th 2020
    • CommentAuthorCWatters
    • CommentTimeOct 10th 2020 edited

    Nailing guide..
    • CommentAuthormitchino
    • CommentTimeOct 11th 2020
    hmm james says one nail, cwattters diagram says two... I like the idea of one, but went to look at a bunch of garden buildings in a garden centre and they all seem to have two... what a dilemma!
    • CommentAuthorjamesingram
    • CommentTimeOct 11th 2020 edited
    Only the centre diagram suggests 2.
    I'd see Shiplap more like the 2 examples on the left.
    Personally I think it's incorrect
    Every time I've seen splitting its because of 2 fixings.
    In recent years vertical cladding has become fashionable and they appear to use a larger pilot then a washer to give a little movement or stop tightness around the fixing shaft. I guess if one fixing didn't secure the Shiplap this method would reduce the chance of two fixings splitting it. Bit of fiddle though doing it that way though.
    • CommentAuthorowlman
    • CommentTimeOct 11th 2020 edited
    CWatters 20 hours ago
    "Most of the movement is probably in the length not the width."

    That's incorrect CW, the vast majority of wood shrinkage is in the width (tangential) and or thickness,( radial), NOT the length, ( longitudinal).
    If you use double nailing and put one nail, for instance, too close to the thin part of feather edged boards so that the next board covers that one nail, you risk width shrinkage splitting the board. with the split piece buried under the board above.
    • CommentAuthormitchino
    • CommentTimeOct 11th 2020
    I'll go one nail methinks
    • CommentAuthorOtterbank
    • CommentTimeOct 11th 2020
    We have the second profile on the house. One nail as shown and we’ve had no issues in 10 years.
    • CommentAuthorphiledge
    • CommentTimeOct 11th 2020
    Possibly more important than the type of board and how you nail it, is having a decent eaves overhang or guttering to keep the boards as dry as possible and minimise seasonal swelling
Add your comments

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

© Green Building Press