ᐅ Wood question for the roof structure of a single-family house with a cold roof – is engineered timber (KVH) necessary?
Created on: 30 Jan 2014 08:00
S
stefanhHello everyone,
A quick note beforehand: I am currently planning the subcontracting of the roofing work for a single-family house with a cold roof. The roof structure for the gable roof will not be visible from the outside (no rafters visible) and, of course, will not be used as living space. I will only enter it occasionally for inspections, and the chimney sweep will also access it from time to time, nothing more.
I have received a quote from the carpenter who uses KVH (timber framing lumber). During the consultation, he did not offer any alternatives, stating that he only works with KVH. He plans to prefabricate the roof framework in his workshop and store it there (this gives him flexibility). Only after the appointment did I research other types of structural timber online, for example, BSH (glulam timber).
Maybe someone with experience as a professional or as the owner of a single-family house with a cold roof can share which type of timber they used and how satisfied they are with it?
Personally, I find it logical that craftsmen work with building materials that have consistent, tested quality. I can also fully understand the additional cost. But is KVH really necessary in this case?
I must admit that I have to convince my wife here – an acquaintance who works as a teacher at a vocational school for carpenters casually told her that we don’t need KVH; regular construction timber would be sufficient. Now it’s my word against that of a teacher 🙄
Thank you very much for your answers!
A quick note beforehand: I am currently planning the subcontracting of the roofing work for a single-family house with a cold roof. The roof structure for the gable roof will not be visible from the outside (no rafters visible) and, of course, will not be used as living space. I will only enter it occasionally for inspections, and the chimney sweep will also access it from time to time, nothing more.
I have received a quote from the carpenter who uses KVH (timber framing lumber). During the consultation, he did not offer any alternatives, stating that he only works with KVH. He plans to prefabricate the roof framework in his workshop and store it there (this gives him flexibility). Only after the appointment did I research other types of structural timber online, for example, BSH (glulam timber).
Maybe someone with experience as a professional or as the owner of a single-family house with a cold roof can share which type of timber they used and how satisfied they are with it?
Personally, I find it logical that craftsmen work with building materials that have consistent, tested quality. I can also fully understand the additional cost. But is KVH really necessary in this case?
I must admit that I have to convince my wife here – an acquaintance who works as a teacher at a vocational school for carpenters casually told her that we don’t need KVH; regular construction timber would be sufficient. Now it’s my word against that of a teacher 🙄
Thank you very much for your answers!
B
Bauexperte30 Jan 2014 10:46Hello,
KVH is a separate quality agreement within the timber industry that goes beyond the sorting criteria of DIN 4074 in several aspects and thus offers a defined higher standard. It is not without reason that the vast majority of suppliers use KVH; it is kiln-dried and much less prone to cracking than the material mentioned by the teacher. From my perspective, quality should always be chosen over thoughtless cost-saving, even for an internal roof structure.
Regards, Bauexperte
stefanh schrieb:If your wife is so easily influenced, then she could ask the teacher friend to build the roof structure with his students and, of course, take on the liability 😉
I personally find it logical that craftsmen work with materials that have consistently tested quality. I fully understand the higher price as well. But does it really have to be KVH in this case?
I also have to admit that I have to convince my wife here – a friend of hers who works as a teacher at a vocational school for carpenters casually told her that we don’t need KVH, simple construction timber is enough. Now it’s my word against a teacher’s 🙄
KVH is a separate quality agreement within the timber industry that goes beyond the sorting criteria of DIN 4074 in several aspects and thus offers a defined higher standard. It is not without reason that the vast majority of suppliers use KVH; it is kiln-dried and much less prone to cracking than the material mentioned by the teacher. From my perspective, quality should always be chosen over thoughtless cost-saving, even for an internal roof structure.
Regards, Bauexperte
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