What is Re-Roofing?

Where a full roof replacement requires the old roof to be torn off before the new roof is added, with a re-roof, a new layer of shingles is placed over the existing layer. This is usually a less expensive option than getting a new roof, and it is just as durable as full roof replacement.

If you are considering a roof replacement, re-roofing may be an affordable option. Find out more about re-roofing in Grain Valley and Kansas City, MO by contacting the experts at United Roofing Services. We can be reached at 816-896-4195.

Can you re-roof over existing shingles?

In general, re-roofing is the process of placing a new layer of shingles over the old roof. This process works really well with traditional 3-tab shingles, but as more and more homes are built with architectural shingles, many people wonder, Can you re-roof over architectural shingles? Because architectural shingles are layered in a way that make an uneven surface, it is trickier to re-roof using architectural shingles, although not impossible. The quality of the installation may not be as great and the shingles will not look flat and smooth. Re-roofing architectural shingles also leaves you much more vulnerable to wind damage. Overall, it’s advisable not to re-roof using this type of shingle.

Things to consider when re-roofing

If you are planning to re-roof your home you will want to take into consideration several aspects before electing for this particular option.

• Make sure the manufacturer’s warranties are upheld if you place a new layer of shingles over an older one: Some manufacturers will not uphold warranties if you re-roof.
• Make sure your home can support the extra layer: Some homes do not have the structure to support an extra layer of shingles. In that case, a full roof replacement is in order.
• Get the roof inspected to ensure the older layer can handle the new one: It could be too seriously damaged to manage a new layer on top of it.
• Ventilation should be a concern: Not only should the roof be able to support the extra layer, the ventilation should not be affected. The added layer should not increase the heat.

Roof ventilation affects your home’s energy efficiency as much as your air conditioner. Central air conditioning repair is crucial when it comes to maintaining levels of energy efficiency.

How much does a re-roof cost?

The re-roofing cost will vary depending on the size of the roof and its slope and the labor costs in your area. On average, 3-tab shingles cost anywhere between $150 to $200 per square foot. The larger the roof, the more it will cost. You may also pay for such materials as tarp and permitting. As with a full roof replacement, the roofer may charge more for a roof with a steeper slope or if the roof is of a complex design. 

Re-roofing questions to ask

Whether you plan to re-roof your home or end up needing a full roof replacement, you’ll want to ask the roofing contractors some basic questions before choosing one for the job. The first thing you’ll want to ask is if they can provide you with a full name and a physical address. A roofer with no physical address should be a cause for concern. You’ll also want to ask, “Do you have insurance and a license?” Roofers should have workman’s compensation and liability insurance. If licensing is required in your state, you’ll want to find out if the license is up to date and the roofer has no outstanding violations.

You’ll want to follow up and find out if the roofer has any homeowner references. Find out if homeowners are happy with the job the roofer did for them. You’ll also want to ask about warranties. Do they offer warranties on their workmanship? Find out what’s covered under their warranties and the manufacturer’s warranties.

Finally, you’ll want to ask if they use subcontractors. If they do, you’ll want to find out which subcontractors they use and ask the subcontractors the same questions as the contractor.

How to re-roofing a house

Before starting a re-roofing project, all permits need to be obtained. Make certain adding a new layer of shingles is permissible in your area. You’ll also need to make sure to get the right shingles for the job. When roofing contractors re-roof a house, they will generally start the project with an inspection. Make sure they check the roof’s decking for water damage. If there are any signs of water damage, replacing the roof may be a better option. You’ll also want to know if the roof can support the extra layer of shingles. Since the roofer is not tearing away the old roof, the process will take much less time than a replacement would.