I played around with a few ideas for my roof replacement last summer. I finally settled on factory-made trusses and I am very happy with the result. Two section roof 18.5' x 24' and 24' x 14'. This required 11@18.5' span trusses and 8@24' span trusses and cost me just over $2,200. My limiting factor here in Newfoundland was lead-time from the truss factory (about eight weeks) and it also drove up my cost as the largest factory here was 10 percent less expensive but the lead time was double.
Great teaching style. I am having a loft conversion done and had difficulty working out what was going to happen in my roof - feel enlightened. Thank you.
Thanks for uploading this summary. Is this part of a series and if so are other parts available? I'm researching how to design an open pitch roof for an extension that is 5m wide..
I am considering constructing timber shed 1.8 m wide and 4.8 m long using 2 x4 inch timber for the walls and rafters. Will I need rafter ties? Concrete roof tiles like on a house Thanks. Great video
Very informative and well presented video. However, your use of the term Queen Post truss to describe the arrangement shown at 2:42 is incorrect. While this does indeed look similar to a Queen Post truss arrangement, the structure is not working in this way. This is because the vertical post you have provided is working in compression to support the purlin. In a true Queen Post or Palladian truss arrangement, this vertical member works in tension to support the main horizontal tie beam below.
When you say "of course we need one of these tie-beams for each rafter" I don't agree. I've seen a roof 6m long with two wires(doing the job of ties) stopping the lateral movement. No sag in the roof after 25 years. I know it's the custom but don't believe it is structurally necessary to have a tie for each rafter. I think the practice of using pre-made trusses has brought this into fashion. Excellent vid all the same, just a picky point. I've done a lot of building incl my own house. I've got a double carport with nine posts (3 lines of 3) and am thinking of taking the central one out and replacing it with a truss/collar/tie arrangement of some sort. That's what brought me here.
Agreed.. Assuming a roof with ridge board and depending on the width of the wall (top) plate - then you would only need a tension tie every 2-3 meters. (or more if the remaining rafters had 'collars' say half way up) The only value in multiple cross ties would be to support a loft or for ceiling fixing. Otherwise - good video
I really like your video. I build a small house of 6 / 4m and I build the roof now. I bought beams for the attic, they are 8 / 8cm, (the base of the rafters, the rest of the rafters are also 8 / 8cm.), They are placed horizontally on the walls (concrete blocks), the base of the attic. I'm a little worried they're not thick enough, I mean those that are laid horizontally. Can you tell me if they are thick enough? Thank you very much.
Which of the two designs is stronger, if the width of the building is quite large, like 6-7 meters? Bigger, heavier logs, or the smaller, lighter repeated design?
Well demonstrated video on designing roof structure using computer modeling. It’s a great way to derive unique and durable roof designs. Thanks for sharing this informative clip.
excellent video. One missing element though. The horizontal stability members to keep the trusses in alignment on intended centers. Could you add to your video please? Roof sheathing can be the element or timber members inside the trusses perpendicular to the direction of the trusses.
Thanks Jay; you make a good point. Hoping to do a whole series of bitesize construction (in my copious free time) - I'll aim to pick this up separately.
Can you please do one on how truss rafter roof works and why it's needed and then how the roof can be adapted to make dormers with no truss webs? Would be great as you explain things much better then the others!
Hi ya Great vid solent bird , I'm a loft convertor up north , apex lofts in google should be top hit if you'd like to check me out. I'm looking for something simular to this video to explain how i take a normal low pitched roof off and place attic trusses on. Im not sure how to get hold of you to have a chat. thanks woody
hi, this is a great video, very informative. i think, i may have a problem with my roof. it is a timber roof 6mx8m. there are a couple of very thick beams which are completely loose. if i took a video of it, could you have a look and comment?
Guys I found a website on which more then 12000 sheds plans available I am learning so much on their. the website is LatestShedPlans48.blogspot.com all you guys should try it....
