Columbus Roof & Leak
Leak repair

Underlayment replacement

Underlayment is the layer between decking and covering, and it is the roof's second line of defence — the thing that keeps water out when wind drives rain under a shingle course. Felt becomes brittle and tears; synthetic lasts longer but still degrades where it has been exposed. It is only accessible when the covering is off, so it is replaced during a re-cover or a large repair rather than on its own, and skipping it to save money removes the backup entirely.

Call (229) 235-1425

What the job involves

  • Assessment of existing underlayment condition where exposed
  • Removal of brittle or torn material rather than overlaying
  • Correct overlap and fixing for the roof pitch
  • Ice and water membrane at eaves and valleys where appropriate
  • Sealing around penetrations before the covering goes back

Signs you need it

  • Leaks appearing despite an intact covering
  • Brittle or crumbling felt visible where shingles are lifted
  • A roof that has been stripped and left exposed for a period

Where we cover

Each area has its own page for underlayment replacement.

Questions

Is underlayment really necessary?

It is the only thing between wind-driven rain and your decking once water gets under a shingle course — which happens on every roof in a hard storm. Omitting it is why some roofs leak despite looking perfect from outside.

Felt or synthetic?

Synthetic is lighter, tears less, and tolerates exposure far better if the job runs over several days. Felt is cheaper and perfectly adequate when covered promptly. On a steep or exposed roof, synthetic is worth the difference.

Related work

Describe what you are seeing

Central Georgia roofs fail from two directions at once: hail bruising from spring storms, and summer heat cooking the sealant around every vent and boot. Both leak long after the damage was done.

Call (229) 235-1425
Call (229) 235-1425