1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

What wood to support 3m. perspex roof?

Discussion in 'Wood / Woodwork / Carpentry' started by seanoge, 13 Aug 2017.

  1. seanoge

    seanoge

    Joined:
    8 Dec 2006
    Messages:
    88
    Thanks Received:
    1
    Country:
    United Kingdom
    Building a shiplap shed with a Perspex sheet roof. It's 3 m. wide. What should I use to support the roof in one span?
     
  2. Sponsored Links
  3. Tigercubrider

    Tigercubrider

    Joined:
    22 Jul 2016
    Messages:
    4,032
    Thanks Received:
    644
    Country:
    United Kingdom
    how thick is the perspex?
     
  4. foxhole

    foxhole

    Joined:
    14 Mar 2006
    Messages:
    17,097
    Thanks Received:
    1,953
    Location:
    Kent
    Country:
    United Kingdom
    3x2 should do it at 400mm centres . Any less and it may curl in heat from sun.
     
  5. seanoge

    seanoge

    Joined:
    8 Dec 2006
    Messages:
    88
    Thanks Received:
    1
    Country:
    United Kingdom
    Perspex is 3 mm as far as I remember. I have already built it at 1,8m x 1.8m but now realise it's too small so removing Right side and extending it, so total should be 2.5m.(N0 more room. See pic
     

    Attached Files:

  6. Tigercubrider

    Tigercubrider

    Joined:
    22 Jul 2016
    Messages:
    4,032
    Thanks Received:
    644
    Country:
    United Kingdom
    So it's corrugated plastic?

    You'll need rafters where the sheets meet, and purlins plus a fall on the roof.
     
  7. seanoge

    seanoge

    Joined:
    8 Dec 2006
    Messages:
    88
    Thanks Received:
    1
    Country:
    United Kingdom
    Yes, corrugated and I have 2 x 2 at about 50cm. spaces going from left to right in the picture, so at right angle to the sheets. Holds it up fine but worried about extra length.
     
  8. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
  9. Sponsored Links
Loading...

Share This Page