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Also, how do you remove old concrete roofing? Roofing cement abuse is often seen on old slate and tile roofs where tar is used to stop leaks in roof valleys and in the slots between tiles and shingles. If you need to remove the tar so you can make a proper repair, use a wire brush to remove loose tar, then a razor scraper to gently remove more stubborn bits.
How long does a felt roof last?
Similarly, can you put new roofing felt over old felt?
When felting over any old felt you can use a bitten primer to get a proper fix, some felts are also a 3 layer system allowing them to go over old felt, however if he has quoted for old felt to be removed then that is what he should have done. Any old felt roof needs to be completely taken up and re boarded.
Similarly one may ask, can you replace your roof yourself?
Installing a new roof yourself is not encouraged. If you are handy and have some roofing knowledge, then most likely you don't even need to read this article. But if you are considering whether or not you can do this, you absolutely can. Tearing out the old roof is just muscle and sweat.
The durability of felt is one of its main plus points. Depending on the manufacturer, the minimum guarantee you will receive is 10 years. However, it is commonly thought amongst roofing experts that torch-on felt can last beyond 30 years in many cases. Of course, this is as long as the roof is well maintained.