New roof! and it is a BIG roof! 480 m2!
A UBS company.
I don't know if this is a possibility in Switzerland, in other countries this is a much cheaper option, especially if you are older and do not want to build a solution that is good for 80 years.
You're getting a good rate. We were quoted today for a brand new mortgage 10y fixed with UBS for 1.3%
I am not recommending you to use these, just suggesting them to give you an idea of market rates to further discuss with UBS.
Solar panels are a good idea, depending on the orientation of your roof, the cost will be recovered in the selling price of the house.
Banks do not split mortgages between themselves, if you are with UBS then you will either have to stay with them or change the full mortgage to another provider.
Depending on your circumstances this maybe difficult, pensioners with little revenue do not excite banks to increase the debt ration unfortunately.
Scaffolding costs what it costs, irrelevant if you use zinc or copper flashing. It you try and do a cheap job, that is what it will look like and you will not regain any of this when you come to sell but by doing the work properly and to a high standard, this will be reflected in the eventual sales price.
You could maybe consider selling and down-sizing.
You could possibly consider selling as a Viager property via Savinter.ch. This would allow you to stay in your house and give you some capital to use now.
If the roof was damaged by some external factor then there would be insurance coverage, if it started to leak due to age and wear and tear then the insurance will not cover it.
Be carefu,l though, if you need to seek Denkmalschutz status. Denkmalschutz can be a double edged sword...
i've no reason to guess whether OP's roof is damaged or just old. it wasn't specified. hence the perfectly reasonable question of whether it was covered by insurance.
swiss house insurance covers a lot more than in most other countries, no questions asked, so i thought it's worth pointing it out!
We have thought about doing part of the roof in solar panels, integrated- to cut down on roofing cost, but strangely enough it would be even more expensive and if we add solar panels, as we have SW orientation- it would be on top.