So roofer need an innovative roof and are trying to decide whether or not necessarily to try and reduce your cost by getting the new roof installed over an existing layer of roofing. This technique is quite common within many areas and many roofing contractors may see any difficulty using this method and even have not a problem striving to sell property owners on a lay-over or perhaps go-over as this kind of technique is named. They are inappropriate.
5 Top Factors A Lay-Over Or perhaps Go-Over Is really a Poor Idea When Re-Roofing
1. ) Regions that have or had leaks cannot always be tackled appropriately
There will be a good opportunity that your ancient roof had several troublesome areas including feasible leak spots, no matter if you noticed these people delete word. Without tearing off the old roof and properly figuring out these kind of trouble locations and determining exactly where the leak had been coming from plus visiting it is impossible to inform just what areas of your roof may require some special consideration.
2. ) Any rotted wood beneath the existing roofing will only obtain worse
There may be places that have rotted wood hiding within the old roofing. These kinds of rotted areas should be identified and changed before a brand new roof is installed. Obviously if your roofing contractor is certainly only doing the lay-over roofing installation then these rotted areas will stay covered up and even only get even worse since the years proceed on. Also typically the nails holding down the particular shingles in places with rotted solid wood cannot properly perform their job plus you have a lot higher risk associated with shingles blowing off in those areas.
3. ) Eaves, rakes and valleys need special therapy
This is the big one particular. The eaves, rakes and valleys of your house want special attention when your home's roof is being installed. This is specially important in chillier climates like Massachusetts, where our company is situated. In the winter time the eaves of your house are under assault by Mother Mother nature, whether it is through snow dams, snow build up, or perhaps the constant freezing plus thawing that occurs over the winter period. When a fresh roof is properly installed the roofing contractor needs to be able to put new aluminum drip-edge around the particular entire perimeter associated with your roof.
Up coming they need to apply a three or more foot wide area of ice & water barrier round the perimeter as okay as in any kind of valleys on the roof. Then they can begin to install the new roofing. Without tearing off of the original roofing there is simply no way to effectively install the new drip-edge or glaciers & water barrier. Over a lay-over type of roofing install, the roofing builder is relying on typically the existing products within the home's roof to still be up to par and also handle the winter conditions. All as well often the outdated products fall brief whether it had been mainly because they have outlived their lifetime, had been sub-par to get started with, or perhaps they were never now there to begin along with (all to generally the latter could be the case with ice cubes & water barrier).
4. ) Added roofing weight is no good for outdated trusses
One of the more evident difficulty with a lay-over re-roof is typically the added weight of the extra part of shingles. Of all newer homes this may not be an issue, nevertheless many older real estate have rafters that will are considered undersized by today's framing standards. Not necessarily unheard of to see 2�6 rafter systems in many of these types of houses. Now inside most situations a new 2�6 rafter will be undersized to begin with so you certainly don't desire to be adding the weight of the new roofing part on top associated with an old roofing layer to these already undersized rafter systems. With new roofs using 2�10, 2�12, engineered trusses, etc . the weight isn't always while much of an issue.
5. ) Shorter roof existence expectancy
Most liable roofing contractors acknowledge that a lay-over roof will decrease the new roof's lifetime can be 25%. This fact on your own means that any cash you might include saved by doing a lay-over, as opposed to a tear-off and new roof set up, was only a new short term financial savings. In addition, a person now have a couple of layers of roofing that will need to be removed the up coming time your roof is done and that will also add more cost to the particular job
Tear-Off After that Re-Roof Is obviously Outstanding
Well, I just gave you 5 very good reasons to split through your old roofing and then install your new roof. Indeed it can always be cheaper in the short term to be able to do a go-over on your outdated roof, but, throughout the long expression it will cost you more. All of us never recommend this technique to the buyers. We always recommend completely tearing involving the old roofing, fixing any actual problems, then installing a fresh, lovely new roof of which will outlast virtually any lay-over roof as well as far better protect our customers'