So you want a brand new roof and are attempting to determine if you should attempt to reduce your cost if you have the brand new roof installed over a current level of roofing. This method is very typical in several areas and most roofing contractors do not see any trouble with this method and also have no issue trying to offer homeowners on a go-over or lay-over as this technique is known as. They’re wrong.
Five Top Reasons A Lay Over Or maybe Go Over Is really a Bad Idea When Re-Roofing
1.) Areas which have or even had leaks cannot always be addressed properly
There’s a pretty good possibility that your outdated roof had some issue areas such as possible leak areas, whether you seen them or perhaps not. Without tearing off the existing roof and correctly identifying these kinds of trouble areas and determining exactly where the leak was originating from and traveling to it’s not possible to tell what aspects of your roof may require some special interest.
2.) Any rotted wood under the current roofing will just get worse
There might be places with rotted wood hiding under the existing roofing. These rotted areas have been recognized and replaced before a brand new top is installed. Certainly, if your roofing contractor is performing a layover roofing installation then these rotted places will stay covered up and just worsen as the years go on. Additionally, the fingernails holding down the shingles in regions with rotted wood can’t properly do their office and you have a significantly greater risk of shingles blowing off in all those places.
3.) Eaves, rakes, and valleys require special treatment
This’s a huge body. The eaves, rakes, and valleys of your home require special attention whenever your home’s roof is now being fitted. This’s particularly significant in colder climates as Massachusetts, where we’re located. In the winter months, the eaves of your home are under assault by Mother Nature, whether it’s through ice dams, ice builds up, or maybe only the continual freezing and also thawing that happens all over the winter season. When a brand new roof is properly mounted the roofing contractor has to place brand new aluminum drip edge around the entire perimeter of your respective top.
Next, they have to utilize a three-foot wide segment of ice & water screen around the perimeter in addition to in virtually any valleys on your top. Then they can start installing the new roofing. Without tearing off the first roofing there’s no chance to correctly install the new ice or drip-edge & water barrier. On a layover kind of roofing install, the roofing contractor is counting on the existing items on the home’s roof to remain up to par and also be in a position to deal with the winter conditions. All too frequently the existing solutions fall light whether it was since they’ve outlived their lifetime, had been subpar to start with, or perhaps they were not there to start with (all too typically the latter will be the situation with ice & liquid barrier).
4.) Extra roofing mass is no great for older rafters
One of the most noticeable problems with a layover re-roof is the extra weight of the extra level of shingles. On most newer homes this’s not a problem, no matter how numerous much older houses have rafters that are considered undersized by today’s framing standards. It’s very common to notice 2×6 rafter systems on most of these homes. Today in many cases a 2×6 rafter is undersized, to begin with, and you definitely do not wish to be adding the mass of a brand new roofing coating on top part of a well-used roofing layer to these currently undersized rafter systems. With newer roofs utilizing 2×10, 2×12, built trusses, etc. the mass is not often as much of a problem.
5.) Shorter top life expectancy
Most responsible roofing contractors concur that a layover roof will reduce the brand new roof’s lifetime by approximately twenty-five %. This fact by itself means that any money you may have saved by doing a layover, as opposed to the brand new roof and a tear-off install, was just a temporary saving. Additionally, you finally have two levels of roofing that will have to be eliminated the next time your top is done and which will also add more expense to the job
Tear-Off Then Re-Roof Is definitely Superior
Well, I simply gave you five excellent reasons to tear off of your old roofing and after that install your brand new roof. Of course it could be cheaper temporarily to do a go over on your outdated rooftop, but, in the long run, it is going to cost you more. We never recommend this particular technique to our clients. We always suggest completely tearing off the existing roofing, fixing any main issues, then setting up a fresh, beautiful brand new roof that can outlast any layover roof in addition to much better safeguard our customers’ houses.