ᐅ Cutting Your Own Timber for the Roof Frame – Moisture Considerations – Scheduling
Created on: 15 Dec 2021 15:38
T
Thomas.W
Hello dear forum,
We are currently planning the construction of our house.
We are planning a solid masonry house with a pitched roof. All work will be subcontracted to individual trades.
Our plans are already quite advanced.
We have already contracted most of the companies and are basically just waiting for the completion of the new development area.
Originally, we wanted to start at the end of 2022, but due to the delayed start of the site infrastructure, we decided to begin in spring 2023 instead.
The construction company has scheduled our project as their first site once weather conditions allow.
Now to my main topic.
I have some questions regarding the roof structure. I have already tried to clear up my lack of knowledge by searching on Google, but I still don’t fully understand. I hope you can help me. Due to the sharply increased cost of timber, we want to fell our own wood. We have our own forest, and our carpenters with a sawmill are only 2 meters (6.5 feet) away from it.
I have already discussed this with them, and they said it would be sufficient if I cut the wood in winter 2022 and then bring it to them. The logs would then be stored outdoors until they process the wood.
If we start excavation at the beginning of March, we should be able to begin raising the structure around May.
My question is whether the timber will be sufficiently dry for that?
Or will it have dried enough by then?
The company has been around for a long time, and I haven’t heard anything negative regarding the quality.
Is this approach common in construction?
I would appreciate any help you can provide.
Thank you in advance.
We are currently planning the construction of our house.
We are planning a solid masonry house with a pitched roof. All work will be subcontracted to individual trades.
Our plans are already quite advanced.
We have already contracted most of the companies and are basically just waiting for the completion of the new development area.
Originally, we wanted to start at the end of 2022, but due to the delayed start of the site infrastructure, we decided to begin in spring 2023 instead.
The construction company has scheduled our project as their first site once weather conditions allow.
Now to my main topic.
I have some questions regarding the roof structure. I have already tried to clear up my lack of knowledge by searching on Google, but I still don’t fully understand. I hope you can help me. Due to the sharply increased cost of timber, we want to fell our own wood. We have our own forest, and our carpenters with a sawmill are only 2 meters (6.5 feet) away from it.
I have already discussed this with them, and they said it would be sufficient if I cut the wood in winter 2022 and then bring it to them. The logs would then be stored outdoors until they process the wood.
If we start excavation at the beginning of March, we should be able to begin raising the structure around May.
My question is whether the timber will be sufficiently dry for that?
Or will it have dried enough by then?
The company has been around for a long time, and I haven’t heard anything negative regarding the quality.
Is this approach common in construction?
I would appreciate any help you can provide.
Thank you in advance.
I lack a substantial amount of information here to even assess whether a gable roof constructed as a rafter roof using beams cut as fillets from the solid trunk is actually the most sensible approach. Isn’t this already quite outdated in terms of time, construction technology, and the market? Is it really worth this luxury (what is it supposed to achieve?) just because the raw material is available at purchase price?
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
Myrna_Loy schrieb:
Because it can crack, shrink, and warp severely.
Our timber was stored as logs for three years, then sawn and kiln-dried. That wasn’t cheap either.
Carpenters don’t use timber stored haphazardly or glued laminated timber beams without proper seasoning. He still wants to make the purlins from glued laminated timber beams. But nowadays, no one really has time to dry the trees for three years, right? I assume the wood is delivered and processed immediately?
M
Myrna_Loy15 Dec 2021 19:47You cannot use freshly cut wood in construction. Depending on the type, wood has a moisture content of 60-65%, which is reduced to about 20% for construction timber. This drying process takes time and causes shrinkage. If green wood is forcibly fixed into a structure, it will crack. This process can be accelerated in drying chambers to a few weeks, but naturally dried wood should be seasoned for 2 years or longer.
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Benutzer20015 Dec 2021 22:09Thomas.W schrieb:
Why would that be a dealbreaker for you? I think the company has built most of their roof trusses that way.Then he doesn’t understand his business 😉. You can look up experiences with wet wood in roof structures. From endless mold to cracks, shrinkage, and so on. I don’t want any of that in my house. Apart from that, ask your carpenter what moisture content the DIN standard recommends and why he wants to deviate from it. Wet wood is NOT state of the art and is a serious defect.
Thomas.W schrieb:
But nowadays, nobody has time to dry trees for 3 years, right? The wood is delivered and processed immediately, I suppose?Don’t assume 😉. Wet wood is not processed (and must not be). Wet wood is dried. Either started drying three years ago or, more modern, “kiln-dried.” That’s as normal as breathing.11ant schrieb:
I lack a lot of information here to even assess whether a gable roof built as a rafter roof with beams cut as fillets from a solid log is really the smartest approach. Isn’t this already outdated in terms of time, construction techniques, and market standards, to afford this luxury (what is it supposed to achieve?) just because you can get the raw material at cost? What else should the beams be made of if not from a solid log?
As mentioned, the purlins are made from glued laminated timber (glulam) beams.
Well, wood prices are still at a very high level.