Your house will probably be worth less.
Pros and cons of roofing over existing shingles.
Shingles that are raised or misshapen make it hard to lay a smooth flat layer of new shingles on top.
When you put in a brand new roof your home s resale value and curb appeal increase.
By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them from being thrown into landfills.
While the second choice is the less expensive of the two options it is not necessarily always the best choice.
In fact the only pro to a shingle over is it s cheaper and cleaner.
The shingles likely won t last as long so the job could actually end up costing you more in the long run.
Advantages of metal roofs over shingles.
Naturally because we don t have to remove the existing shingles the job can be done much faster and will cost much less.
Well that s why the metal roof is such like an eco friendly product because you don t have to get rid of all of that stuff to the landfills.
Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it.
If there are any pros to overlaying a roof it s saving a little bit of money.
When contemplating a new roof many people hope to simply do a shingle over and avoid the extra cost and mess of tearing off the existing roof and starting from scratch.
Less time again as there is less labor your home will be under construction for a shorter period of time.
But because of the amount of prep work involved in overlaying a roof properly any savings are usually modest maybe 25 percent compared to a new roof.
But now that i said that i would tell you that if it was my house i probably would and the reason is i don t want to have all those old shingles under the roof.
It s clearly easier and cheaper to leave the old shingles in place but there s some special prep work involved with a re roof removing vents ridge caps and misshapen shingles among other things and you still have to replace or add new flashing which sometimes can be tricky over old roofing.
Disadvantages of metal roofs.
If your existing roof is fairly old there s a good chance the shingles are damaged.
There are advantages to tearing off the old roof before installing a new one.
That s why many people opt for the overlay method if possible as it can be much cheaper.
If there are any defects in the roof deck they will be revealed when the roof is torn off.
Pros vs cons of roofing over existing shingles adds value.
Less expensive since you re simply adding another layer of shingles on top of the old roof your labor costs will be considerably less.
Although it sounds like a good idea we can assure you the cons heavily outweigh the pros.
This probably seems like a no brainer but fully replacing your roof means you get a brand new one.
