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Major project · Exterior & Envelope

Fiberglass Rooftop Deck Leak Repairs

A fiberglass deck is a roof you walk on. When it leaks, the water does not stay on the deck, it goes into the floor below and into the wall behind the parapet.

Book a paid inspection 1-833-466-4788

What this actually is

This is a newer type of construction in this market and it has not been through a full life cycle yet. The system was installed flat, the house moved, and the fiberglass did not move with it. Most of the failures we see are at the junctions rather than in the middle of the field: the parapet flashing, the door threshold, the drain outlet and the corners.

We find the entry point before anyone talks about resurfacing. Recoating a deck that is leaking at the threshold just buries the problem under a new finish.

Signs you have this problem

  • A stain on the ceiling of the room under the deck
  • Water tracking down the inside of the pilot house wall
  • Hairline cracking in the deck surface, usually at a corner or a seam
  • Standing water on the deck a day after it rained
  • Flashing lifting away where the deck meets the wall

How the work runs

Every job in this category follows the same order.

  • 01

    Deck survey

    The field, the seams, the drain, the threshold and every junction with the wall, photographed as we go.

  • 02

    Trace it below

    Thermal and moisture meters in the room underneath, so we know how far the water has already travelled.

  • 03

    Open the junction

    Only where the readings say to. Often one corner tells us everything.

  • 04

    Repair and verify

    Rebuild the detail, reseal, then wet test it and prove it is holding.

What is included

  • A photo report showing the actual entry point
  • Repair of the failed detail, not a blanket recoat
  • Moisture readings in the space below, before and after
  • A wet test you can watch
  • An honest opinion on whether repair or replacement is the better spend

Watch

A quick look at fiberglass deck repairs.

0:15 · sound on

Questions people ask

Fiberglass Deck Repairs, answered plainly.

We can, but if the water is coming in at the threshold or the parapet, a new coating over the top of it changes nothing. We find the entry first and tell you what it actually needs.

Readings. A deck leak and a roof leak show up in different places on a thermal image, and the moisture pattern below runs in a different direction.

Sometimes, if it is recent. We document the findings either way, which is what you need if you are going back to them.

Ask about this

Tell us what you are seeing.

Someone who knows fiberglass deck repairs comes back to you the same working day.

If water is moving right now, call 1-833-466-4788 rather than waiting on a reply.

Related work

Problems that usually travel with this one.

Major project

Exterior Repairs & Restoration

Roofs, flashing, pointing, parapets, decks and coatings. The repairs that stop water getting in, done before anything inside is restored.

What we fix Major project

Water Damage Restoration

Extraction, structural drying, removal of what cannot be saved, and rebuild. Documented to a standard an insurer will accept.

What we fix Diagnostic

Leak Detection & Water Intrusion Investigations

Find the actual source of the water before anyone opens a wall. Thermal imaging, moisture meters and drone survey, inside and out.

What we fix

Next step

Start with your ZIP code.

We will tell you straight away whether this is something we can take on at your address.

Greater Philadelphia · Northern Delaware