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Last spring, we tipped up a new timber frame barn here in Vermont. We had first begun discussing the barn with the family over a year previously, and worked closely with them on the design for a 28-by-40 foot barn.

We shaped the timbers over the course of the winter, and it was ready for the arrival of spring… as were we! The owners will be using the new post and beam barn as a seasonal living space and as a place to indulge in their wine-making hobby. The project and our clients were a delight, and we want to share the story of this frame.

Timber frame barn in vineyard green mountain timber frames

During the design phase of the project, we decided with our clients to use local hemlock timbers, and settled on 10-by-10 inches as the size for all the posts, girts, and top plates. The timbers were sawn at a sawmill just five miles from the barn location.

Post joinery is cut for timber frame

We decided to construct this frame using a principal rafter and purlin system. This means that each 28-foot bent section has massive rafters which support horizontal purlins. In this design, the roof boards are put on the frame running vertically.

Shaping swoops on heavy purlin timbers

Jesse shapes the “swoops” on the ends of the heavy purlin timbers.

Another exciting feature of the barn design was the inclusion of four dormers in the roof structure. The barn will have a two-thirds loft where the dormer interior can be enjoyed up close, and the dormers in the cathedral space will provide natural light and aesthetic balance for the exterior.

One of the beautiful things about timber frame construction is that we can craft each joint and wooden connection “on the ground.” That way, on raising day, each labeled joint slides together and receives the oak pegs. Since we wanted to go through this preparation process on the dormers as well as with the larger sections of the barn, we assembled each side of the roof system flat on saw horses and got to work.

40 foot long roof system_Green Mountain Timber frames

This roof section is 40-feet long, and laying it out flat on the ground allowed us to check all the joinery and test-fit the dormers

We wanted to use a traditional ridge beam for the dormers. Because the pitch of the roof was 11 inches of rise for every 12 inches of run, the ridge beam had to be shaped to match the roof pitch rather than remaining at square, 90-degree angles. This made laying out and cutting the compound angles challenging. I remembered my grandfather’s old-fashioned miter box that he used when I spent time in his shop as a kid. We replicated my Papa’s angle box to cut our dormer ridge beam, and it worked great!

jig box for cutting ridge beam green mountain timber frames

We built a jig box to help us cut the complex angles on the dormer ridge beams.

dormer joinery on new timber frame roof

Matt inspects dormer joinery

We constructed and fit the four bents and assembled each of the 40-foot eve walls. We used math, geometry, and sharp tools to make certain that the frame would rise up straight and true on its foundation in the spring.

Timber frame bent assembled green mountain timber frames

Jesse enjoys the completion of a gable bent. There is an upper doorway framed in this gable that will lead from the loft out onto a small balcony.

Soon enough, spring arrived, and we were ready to put the frame up. Our client and his son helped us to whittle the proper points on the oak pegs. We use a “shaving horse” to shape the pegs. This ancient design works beautifully to hold the peg hands-free while a draw knife or spokeshave is used. Footwork operates the clamping mechanism.

shaping oak pegs green mountain timber frames

Our shaving horse works great for shaping pegs!

Next, we began assembling bents and driving the pegs to hold them fast.

Pegs are driven into a bent before it is tipped up

Pegs are driven into a bent before it is tipped up

Before we knew it, we were tipping up the final bent.

lifting final bent into timber frame baren

We absolutely love the way the four post bent design draws the eye down the center of the building and gives the whole thing a cathedral feel.

timber frame erected and pegged in Vermont

The lower cube of the frame is erected and pegged.

The next step was to install the top plates, which tie the bents together and support the weight of the rafter system.

green mountain timber frames new construction

Next, the principal rafters went up. As we set each pair, we fed the tenoned purlins into place, as well as the braces that we placed in the rafter system in order to make it ridged.

eve purlin placed in roof and dormers installed

We set an eve purlin into place

It was great fun to assemble the dormers – this time standing upright on the roof system instead of sitting flat on saw horses at the shop. We set the little ridge beams, rafters, and dormer posts. The pegs went in, and we were delighted with the result.

dormers and pitch on timber frame roof

The dormers are 5-feet wide, and the pitch is matched to the main roof.

Here is a crow’s eye view of the completed rafter system and the dormers:

purlin extensions and steel plates to create a generous roof overhang

We used purlin extensions and steel plates to create a generous roof overhang.

hemlock roof boards Green Mountain Timber Frames

The warm colors of the hemlock and roof boards are wonderful.

It was a great joy to collaborate with this family to create a structure in a beautiful setting that will be used and enjoyed for a very long time to come.

Here is hoping that many a glass of wine, crafted in this barn, gets raised by friends and family for generations! Cheers!


Do you dream of living, working or making wine in your own timber frame? At Green Mountain Timber Frames, we restore and build timber frame barns and homes, both new and old.

Give us a call.

completed dormer_Green mountain timber frames

I can imagine sitting in this dormer with a cup of coffee and enjoying the view for a very long time!

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A Comparison of Timber Frame v. Stick Built Construction

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This week’s guest blog is from builder and timber framer, Glenn Tarbell. Glenn has collaborated on many projects with Green Mountain Timber Frames over the last two decades.  Recently, he built this beautiful timber frame garage for a client. 

Final Timber Frame Garage.jpg

Why Use Timber Frame Construction?

Recently I had a customer who wanted a new garage. They live in a beautiful wooded area with large oak trees near a wetland. Their house is not large and has a low sloping roofline. The siding is rustic, rough sided pine that is stained. They asked me to build a two bay garage.

Timber Frame v. Stick Built

I inquired if they would be interested in a timber frame garage rather then a traditional stick built garage if the pricing was not considerably higher. They loved the idea of a timber frame and we began the design process. The pricing for a timber frame style building was only slightly higher, so we decided to go with it!

Designing the New Garage 

In the design phase, we talked a lot about the height of the new building. The customer did not want a garage looming over everything. We talked about enclosed and not enclosed bays, power needs, and building materials for the roofing, siding and the timbers. They also needed storage for kayaks and canoes and windows on the south face for garden starts.

We decided that the final building would be a barn-garage. We would create a structure that looked like a barn with an extension for the traditional hay hook or, as we discussed, a canoe hook. The customer had a rope system with a vintage pulley that has already pulled the boats into the upper half story for the winter.

The structure we finally designed has one fully enclosed bay with an overhead door and a shed roof off one side for the second bay. We ultimately choose this look for two reasons: height and looks.

6_plate section for the shed roof

Building the Barn – The Construction Process

When it came time to start building the garage, we chose hemlock wood for the frame. This is a ridged softwood that works well for timber frames. We cut the joinery traditionally using chisel, saw and chain mortiser. Then, we dry fitted all the parts of the frame at my shop. Seeing the mortise and tenons fit together and then seeing the bent sections laid on the sawhorses was wonderful. Dry fitting the frame gives a sense of what the building will become, while also allowing for us to check for accuracy in layout.

2_All the bents are up

Here we are drilling 1-inch holes for the wooden pegs.

The barn posts are six by six, the girts are eight by eight, the rafters are four by four and the braces are three by six. As a big pile of wood it does not look like much, even with the joinery cut. But on raising day, wow, it takes on a look of its own.

4_4x4 rafters in place

Here you can see all the bents assembled and the frame with shed walls erected.

And here’s a look at the new garage once the roof sheathing and trim were on:

7_Roof sheathing and trim

Pricing Timber Frame v. Stick Built Construction

When pricing this kind of project and determining the cost difference between timber frame and stick built construction, I have to look at the two styles of building with the thought, “What steps will be different?” Siding will be applied in the same manner in both building styles, as will trim, roofing and sheathing. The only real difference then, is the framing.

It took nine days to cut out the timber frame and tip it up, including roof sheathing.

3_Drilling holes for pegs

The frame with all the 4×4 rafters in place.

To build a traditional stick built garage with roof sheathing, it may take seven to eight days to get to the same point. Therefore, the difference in this project was two days of labor.

Timber Framing – A Worthwhile Investment

In the end I think timber frame construction makes more sense both financially and aesthetically. Even if it takes a bit longer and requires a slightly larger initial investment, (usually 15-20% more) a new timber frame is strong. Barns built this way have lasted hundreds of years.

Standing in a timber frame feels good. You can see the craftsmanship of the builder and know that the history of barns and houses built this way dates back hundreds of years. So whether you build a new timber garage or use a vintage timber frame barn as the frame for a garage, from my experience timber framing is usually the way to go. It’s cost effective and the building can last for centuries if the roof is maintained.

Interested in your own timber frame barn or home? Let us know!

We’d be glad to hear from you! 

Luke – Green Mountain Timber Frames
luke@GreenMountainTimberFrames.com
802.774.8972