felt underlayment

Should Your Roof Have Synthetic Underlayment?

If your roof is old, it probably has asphaltic felt paper underlayment.  Felt is the most common type of underlayment in older homes, and it’s still frequently used today. But is felt paper the best option? Probably not.  When it works, it works well(ish).  But there’s a reason felt paper is used almost exclusively on …

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Synthetic Underlayment vs. Felt

Every shingle roof needs an underlayment.  Because shingles are not adhered at all joints, wind driven rain can get beneath them.  Underlayment acts as a water shedding membrane in such case. For more intense issues, like shingle blow off, underlayment is necessary temporary protection for the time before repairs can be conducted. Underlayment is not …

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