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You want to renovate? Or change the appearance of your property? Is the end of the life expectancy of your roof coming closer? Reroofing can be the answer!
When your shingle roof is nearing the end of its lifespan, it is probably the time for some big decision what to do. Decision must be made whether to remove the old shingles or apply new shingles directly over the existing layer.
It’s called reroofing and this is the process of recovering or replacing an existing roof covering.
With the exception of asphalt shingles, no other pitched roofing materials will allow you to perform the repair process directly over the existing roofing material. By using shingles you'll save time and money and you will manage the renovation process easier and faster. By using bitumen shingles for your roof, you'll reduce the impact on the environment.
Difference between reroofing and roof replacement
Roofing over an existing roof is also called reroofing or an overlay. It is the process where roofers install a new roof over your existing one, i.e. add a new layer of shingles, which means that there is no tearing off of the old roof.
Roof replacement is the process of installing a completely new roof that includes tear off of the old one. Roofers will tear everything off, down to the deck of the roof, and basically start from scratch with the new roof, from putting an underlay e.g. Armourbase Pro Plus and then installing shingles.
The replacement of roof involves much more time and labor which is more expensive than reroofing. When a roof doesn’t have underlying problems is an old and simply losing its function, reroofing might be a better solution as it involves much less work on your home, as well as less money
When is it better to put a new roof over an existing roof
When your roof starts to fail, but it is in an overall good condition, a reroofing might be the best choice for you. It means that your roof may be at the end of its life, but its underlying structures and wooden deck are in a generally good condition. Your shingles may be losing granules and are worn out due to age or weather, but they are not causing leaks, they are not curling or missing. These are all good predispositions for installing a new layer of shingles over the existing one.
Reroofing can also be done when you simply want or need a change on your roof. If you want a different design or color, or you may be completely renovating your home so you want the roof to match your new style. Installing a new shingle layer will give your roof depth and even a three-dimensional appearance, as it is slightly raised due to the existing layer of shingles beneath it. The best IKO shingle for this is the Cambridge Xtreme 9,5° or Cambridge Xpress.
When it comes to the financial aspect of reroofing, it is undoubtedly less expensive than a complete roof replacement. The main reason for that is that there is no need for a tear off of the old roof – of the existing shingles and the underlying structures. This means that there is significantly less labor needed, as well as time spent on the project, and therefore the costs are lower. Your roofer can immediately start with the installation of the new roof, without spending time on shingle removal and disposal.
When is it not recommended to do reroofing
Every professional roofer after roof inspection will come to you with his report or a recommendation, explaining why your roof is or isn’t for reroofing. You can ask for a few roof estimates from different contractors just to be sure that you are doing the right thing, so that you can choose the best roofer for yourself. One of the main and most straightforward reasons is curling shingles, as you can only install a new layer if an old shingle roof is completely flat and level. Second reason can be an existing damage of wooden structure underneath, such as rot or sagging.
