Hello, friends
Is it possible that the roof panel have been made like the floor panel -
mixed wood with polyurethane foam,
or there is a plywood only in selected areas, like in front above the moving bed. Because i find a plywood there. That is a picture.
Kind regards.
Jack
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I hav not seen it like this bevore. When i pulled out the roof windows there was no wood.
But perhaps it depens on what an Arnold you have and where you made that hole.
Or was that roof made bevore by some one else? Are there any seams on the roof?
Arnold RM 38 Restaurierungsobjekt
Produktionsnummer 1413
I hav not seen it like this bevore. When i pulled out the roof windows there was no wood.
But perhaps it depens on what an Arnold you have and where you made that hole.
Or was that roof made bevore by some one else? Are there any seams on the roof?
Arnold RM 38 Restaurierungsobjekt
Produktionsnummer 1413
Hi,
The roof were repaired from outside. It did not seem that somebody else have repaired it. The plywood have been implanted from the builder. It is abot 5 cm wide and from one to another side. I can not take a measure f how deep is. I managed to clean the wet part of a plywood that I reached from the cut that I made in an aluminim sheet. The plywood had made a protrusion in the roof. The position of this beam is between the red lines that i painted on the pictures.
First registration 1883.
You said it looks linke there was no repairfrom some body else. So it must be original.
If you imagine that the flor was made same. The roof must be stabelist by the wood.
If the wood is in god kondition, to make it dry is the only think you have to do.
I would wonder if you could show us more pictures from your restauration.
Kind regards
Thomas
Arnold RM 38 Restaurierungsobjekt
Produktionsnummer 1413
Hello friends,
Unfortunately, I have more photos to share with you as I get bolder. The plywood is 8 cm wide and 2 cm thick. I think that it had been implanted only in this place or maybe one more in front of it, where there is no furniture to support the roof?
I do not know yet what I will replace the plywood with. There is a metal bar in the same place, but outside of the roof, that I mounted. Maybe I will fill the gap with fibran xps before I glue the alu sheet.
Any suggestions?
Greetings.
if you like to replace the wood I recommend eg. Pinewood / Kiefer. Take solid wood, no plywood. Alternatives are Douglasie, or tropical wood used for terrace covering. If you keep the roof dry, it will be always lasting forever, no matter what type of wood you take
A better alternative can be a GFK-Profile like you can get here: http://fibrolux.com
or "Purenit", what is possibly the best for Insulation and stiffnes. I can we used as Wood. Used today by roofbuilders (passive houses), or in modern premium RV's for joints or stiffening.
Peter
P.S.: I think Arnold put in the stiffeners for the possibility to mount an air conditioner
I think to replace the playwood whith playwood is an good Idee. Do not take the smalest.
That is made in China and no good quality. Better take a bigger one and to big to replace and than cut it out. So you kann fitt the old whith new one together.
To glue them together you can take wood glue? / Holzlaim. Take water resistent one. If yuo do not trust it, you can scew some scews as addition in it.
But Peters exampels are also good. The plastik is perhaps more expensive and.you can't take a normal glue. You have to be wery carfull whith it. Working over your had.
Arnold RM 38 Restaurierungsobjekt
Produktionsnummer 1413
i forgot to give you an advice for the glue. Best will be the use of a polyurethane 1k, or 2k-Type, or a "mischpolymerisat". Wellknown 1k-types are Sikaflex 252, or Dekalin MS-2/5. 2k (two-komponnent)-types are Körapur 666, what i recommend, or similar. For small quantities Ponal 2k-PUR, or Ponal-Duo is very usefull. All are capable for connecting GFK, PU-Foam, wood and aluminium and also to fill gaps, which you will always have....
Hello Friends, and thank you for your advices.
I bought Korapur 666. My first choice for the beam
is a laminated plywood for construction because is wet resistant and flexible.
It have to be in two parts for entering above the sides.
I also wonder about the cut of the beam. I think of three ways to do it:
you can cut it as you like, if you will replace the Aluminium under it, as original. It is just mechanic. The material outside will take most of the load and are relevant for the stiffness.
Hello everyone.
Now I have time for my homework.
I started by sizing and shaping the beam. Pine. I impregnated it against rot. I trimmed the edges to fit the aluminum profile - above the walls. Along the cut, I put 10x1 mm aluminum sheet inside. I'll do a stitch with rivets later. I used Korapur 666. I waited 3 days to dry. The result is good. I'm a little over-tightened by the struts. Now the panel is slightly bumped up.
However ...
At the very front, the aluminum sheet peels off and the saga continues.
I just thought I was beginning to understand Arnold but not.
Some pictures:
Hello friends,
Today, I have boldly and irresponsibly advanced the destruction of Arnold. It turns out that there is a wooden beam at the front of the sandwich panel. Actually the beams are two glued and are wooden unlike the first one I discovered (plywood).
The only explanation I came up with was that they put whatever they got into. The left 1/4 of the beam is rotten and I removed it. The rest is very well glued and I decided not to replace it. There is still no way to score a whole beam without cutting it.
Some pictures I took:
