Take the front wall off. We bought our TT from the original owners who didn't use it much, but it did sit outside for the 11 years they owned it. We did find some evidence of water, but thought it was fixed. Wrong! So with the help of a friend who works at an RV dealership and a borrowed shop while another friend was away for 2 weeks we did some repairs.
First you remove the window covering , then the window. Next take off the corner edge moulding and then the upper skin.
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Don't stop there. In this case it's basically a stick box with metal skin over it. Black wood is not a good sign. Unscrew the upper and lower walls and remove. Replace the rotten wood as best you can. Sometimes you just have to add a brace to strengthen a weak spot. We replaced the inside panels that had some rippling in them. It would have cost thousands to have this done in a shop, and it would have been done quicker but I have more time than money. I couldn't match the wood grain so the front wall is all white, like the ceiling.
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David
First you remove the window covering , then the window. Next take off the corner edge moulding and then the upper skin.

Don't stop there. In this case it's basically a stick box with metal skin over it. Black wood is not a good sign. Unscrew the upper and lower walls and remove. Replace the rotten wood as best you can. Sometimes you just have to add a brace to strengthen a weak spot. We replaced the inside panels that had some rippling in them. It would have cost thousands to have this done in a shop, and it would have been done quicker but I have more time than money. I couldn't match the wood grain so the front wall is all white, like the ceiling.

David
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