Does the wood rot from polyurethane foam? Listened to the carpenters, blew out the seams

  • Apr 06, 2021
click fraud protection

After the shabashniki, who mounted the roof of the House-Bath for me with self-tapping screws, I finished the work. All mounting plates were punched with brushed nails. Thus, he increased the bearing capacity of the rafter system.

Does the wood rot from polyurethane foam? Listened to the carpenters, blew out the seams

I also added corners and plates in many places.

Does the wood rot from polyurethane foam? Listened to the carpenters, blew out the seams

The next stage will be the installation of a vapor barrier film and insulation of the cold attic floor. But unfortunately the masters made some of the wrong joints. Through which heat, in the future, will intensively leave the room. Even if the insulation is close.

For good reason, this place had to be docked through jute. But this was not done.

"Blow out polyurethane foam and that's it!" Some will say it while reading the article. But not everything is so simple. Recently I witnessed a dispute between two people involved in baths.

One of them stated:

  • Do not try to foam. Foam is the "death" of the tree.
  • Foam is a sponge, it absorbs all the moisture in itself and decay will begin.
  • From the mobility of the rafters, over time, the foam will break.
    • instagram viewer
  • foam decomposes not only from ultraviolet, but also from dampness. And there are many more to be enumerated. Foam and wood are not compatible
  • No self-respecting carpenter will ever use foam in wood construction.

The other revived:

  • The tree will always find where to breathe, if you do not foam the entire surface of the tree.
  • Foam, foam, if you use vapor-permeable foam, then there is nothing to fear
  • If the wood is dry, then the foam will not absorb moisture in any way, all the more it will not rot and collapse.

As a result, after listening to the controversy of people analyzing the embedding, I came to the conclusion that:

Foam can be used to seal wood joints, but only if this place will not be exposed to steam and water. If, nevertheless, moisture gets on such joints, then it should be well ventilated. In any case, it is necessary to foam the tree as a last resort. Look at the photo in the gallery and read the description. Scroll >>>

Bath of shift workers. The joints between the logs were filled with polyurethane foam 6 years ago.
Bath of shift workers. The joints between the logs were filled with polyurethane foam 6 years ago.
Bath of shift workers. The joints between the logs were filled with polyurethane foam 6 years ago.
Bath of shift workers. The joints between the logs were filled with polyurethane foam 6 years ago.

Dear friends, in the coming month, articles devoted to the construction of a bath house will be published daily. More than 30 articles have been written, I will tell you about my construction project, my mistakes and miscalculations. You can click on the tag below and you will be taken to the articles. And you can also just subscribe. Glad to every reader.

From SW. Timofey Mikhalov.