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The contractor you use should be state certified for the manufacturer to
warranty their product. |
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Have the contractor show you their State Builders License
(anything over $600.00 requires it). |
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Have the contractor show you his insurance. |
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Go by work done several years ago to see how it has held up. |
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Does the contractor have a local office to visit? |
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Who is doing the work and what experience do they have? |
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How long has the crew worked together? |
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Do they warranty their work and are they willing to give you a written warranty? |
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Make sure the contractor's name is on any permit needed. |