The 18x24 Timber Frame with Purlins showcases timeless timber craftsmanship with elegant architectural details. Gently curved struts and knee braces bring graceful character to the frame, while the steep 12:12 pitch roof creates an impressive sense of space and rhythm.
Whether you're creating a backyard gathering spot or expanding your living space, this frame offers both beauty and flexibility.
Frame Highlights:
- Footprint: 18' x 24' (432 sq ft between posts)
- Roof Pitch: 12:12 for soaring ceilings and dramatic visual impact
- Architectural Details:
- Curved struts and knee braces
- Exposed rafters and purlins creating a rhythmic, timeless ceiling structure
- Ceiling Finish Options:
- Top with simple metal roofing for durability
- Or install a tongue-and-groove ceiling for added warmth and elegance
Endless Possibilities:
- Outdoor Kitchen & Dining Pavilion
- Detached Guest House
- Beautiful Carport
- Great Room Addition
- Studio or Workshop
No matter how you finish it, this timber frame will stand out for its craftsmanship and will be a project you’ll be proud to share.
Buy This Plan
This plan provides detailed, easy-to-follow blueprints, perfect for anyone building their own timber frame.
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Do you like this plan but need to change it a little, or do you want a complete Ready-To-Raise Kit?
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View Our Interactive 3d Model
We understand that every project is unique, so we offer extensive customization options for our plans and kits. Choose from various sizes, roof styles, and finishes to match your style and landscape. Our design team is dedicated to helping you create the perfect plan that reflects your vision.
Here's How You Can Get Started:
- Phone: Call us at 888-552-9379 (9–5, M–F) to speak with one of our experts.
- Email: Send your questions to projects@timberframehq.com, and we will respond within two business days
- Online Form: Please complete the form below, and we will respond promptly.
Does this come with different roof pitch?
What is total length and width of structure?
What is the total height?
The total height is 18’8 1/16″ to the top of the ridge in the drawings. It is 18’wide x 24′ long from outside of post to outside of the post 2′ overhangs all the way around it. We don’t have this design in any other roof pitches. We can create one with a different roof pitch though, check out our custom design services page.
Do the plans include information on the required footing depth for the posts?
There are so many different ways to handle foundations that it is difficult to include a foundation drawing for all the frames on the site in the drawings. We have completed a bunch of foundation details, you can find them at https://timberframehq.com/construction-details/masonryconcrete-to-timber/. You should be able to find one that works for you there if not lets set up a time to talk through where you are and what you are looking to build.
hi can i use normal mortise and tenon unstead of the metal fastner
Yes, you can use all mortise and tenons in this frame. The tie beam is in sustain tenon and so we recommend the all-thread connection.
I need a 18’ x 32’ or 31’ can you accommodate.
Thanks, Ron
Ron, that would be a fairly simple modification. Please check out our custom design page for more information.
Would it be possible to see the timber requirnments. Kinda need to price these out first to make sure I can afford the timbers.
Hello Matt: we just sent you an email with the timber list. Thank you for your interest!
I was hoping to see a cost breakdown for materials before buying the plans. Is this possible?
We do not have a cost breakdown of the materials. It will depend greatly on what species you are using and your location.
Ok, if I could get the list to purchase I think I’d be able to go from there.
Hi,
I was wondering two things.
Do you have a metric version of the plans?
What is the internal floor area (in-between supports) ?
Thank you
Hi,
Do you have these plans in metric?
And do you have the internal floor area?
Thanks!
Francis, we do not offer this plan in metric at this time. There are many conversion sites on the internet that could help you, however.
The dimensions are 18′ x 24′ from outside of post to outside of post. So the floor area is 432 square feet.
Can you send me the timber list?
We just emailed it to you, keep an eye out for it.
I need a 18’ x 20’. I assume I could use this plan and make the appropriate adjustments.?.? Could I also get a timber list? I’m trying to get an idea of species cost difference. Thanks!
Scott, it would be pretty easy to make the adjustments to shorten this to 20′. We do offer Custom Design services if you need the drawings adjusted. We will email you the timber list.
Can this be done in a post and beam connector style? Is it as simple as doing the joinery with connectors?
Yes, it can be converted to a post and beam plan. Some of the joints are in tension and I would recommend leaving the all-thread connection there.
Is that something that’s easy to do or can I request an actual different version that specifies post and beam
Whether it’s easy or not depends on your level of experience with timber frame- but if you would like us to modify that as a post and beam, check out our Custom Design services.
Interested in these plans. Can you send me the timber list?
What is the clearance height to the first horizontal beam? I have a boat that needs 13’6″. Do you think this could work? Also, please send me the timber list.
The top of the collar tie (on the gable end) is 9′-9″
18 x 24
I’m repeat custermer
Fee to make. 18 x 20
Rough lumber list. So I can Price
Than price as a kit with a pine
Than a oak.
Brian
Brian, have you purchased this plan? If so it would be the same timber list without the extra 4 feet for the purlins and ridges.
If it is not too much to ask I would appreciate receiving a materials list if possible. Excellent TF Site thank you for your efforts.
Brian, we don’t supply materials list except with the plan purchase. Keep in mind that we offer a 30-day satisfaction guarantee. If you purchase the plans and can not use them for any reason we refund your total purchase price if you notify us within 30 days of your purchase. We can tell you that the plan utilizes 3640 board feet. Here are the timber sizes Posts –8×8
Collar Ties – 8×10
Rafters – 8×10
Plates –6×10
Purlins – 4×8
Braces – 4×8