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Shed Roof Leaking? Re-Felting vs Repair After Storms

Shed Roof Leaking? Re-Felting vs Repair After Storms

The North East gets its share of strong winds and heavy rain, and garden sheds often take the brunt of it. After a storm, it is common to find felt flapping loose, a damp patch on the stored lawnmower or water pooling on the shed floor. The question is whether a quick repair will do or whether the roof needs re-felting completely. Having repaired plenty of sheds across Newcastle and the surrounding areas, here is how I would weigh it up.

First, check the damage

Once the weather has settled, have a careful look from the ground and from inside the shed. Avoid climbing onto the roof, as shed roofs are rarely built to take a person's weight. Look for:

  • Felt that has torn, lifted at the edges or blown off entirely
  • Splits and cracks in older, brittle felt
  • Nails that have pulled through or rusted away
  • Daylight showing through the roof boards from inside
  • Dark, soft or sagging boards, which suggest rot
  • Damaged fascia boards or trims along the edges

When a repair is enough

A patch repair can make sense if the felt is generally in good condition and the damage is limited to one area. Typical repairs include re-fixing a lifted edge, replacing a torn section or renewing the trims that hold the felt down. A repair is most worthwhile when:

  • The felt is fairly new and still flexible
  • The damage is confined to a small section
  • The roof boards underneath are dry and solid

Bear in mind that patches can be a weak point, so they suit roofs that otherwise have plenty of life left in them.

When it is time to re-felt

If the felt is brittle, cracked in several places or has been patched before, a full re-felt is usually the better long-term option. Stripping the old felt also gives a chance to inspect the boards properly and replace any that have rotted. Re-felting is often the sensible choice when:

  • Leaks are appearing in more than one place
  • The felt crumbles or cracks when touched
  • There are several old patches already
  • Boards underneath need replacing

Choosing the right felt

Shed felts vary in thickness and durability:

  • Standard sand-finished felt is the most basic option, suitable for small sheds and occasional use.
  • Mineral-finished felt is thicker and more hard-wearing, with a granule surface that resists weathering.
  • Torch-on or heavier-duty felts are used on larger outbuildings, and need specialist installation.
  • Felt shingles give a tiled look and work well on sheds with a reasonable pitch.

Whichever you choose, proper fixing matters. Edges need to be secured well with clout nails and trims so the wind cannot get underneath, which is exactly what happens in a North East storm.

Rotten boards and frames

A new roof covering will not last on rotten boards. Soft or spongy sections should be cut out and replaced with new timber before re-felting. It is also worth checking the roof joists and the top of the wall frames, especially in corners where water collects. If the framework is badly decayed, a larger repair or replacement may be more practical than a new roof.

Do not forget the door and base

Leaks are not always from the roof. A door that has warped or dropped can let in rain, and sticking doors put strain on hinges and frames. Adjusting or rehanging the door, adding a drip rail and replacing worn hinges often helps. Check the base, too. A shed sitting directly on soil, or on a base that holds water, will rot from the bottom up. A level, well-drained base with bearers keeps the floor off the wet ground.

When to call a handyman

It is worth getting help when:

  • The roof is too high or fragile to work on safely
  • Boards, joists or frames need replacing
  • The door no longer closes properly
  • Fence panels have also been damaged in the same storm

Our shed repairs service covers re-felting, board replacement and door fixes across Newcastle, North Tyneside, Gateshead and Northumberland. If the storm has also taken out a fence panel or two, see our fencing page.

Keep your shed dry this winter

A quick check after each storm can catch problems early, before a small lifted edge becomes a soaked floor and rotten boards. Decide between repair and re-felting based on the age of the felt and the condition of the timber underneath. If you would like an honest opinion on your shed, call Andrew on 07960 485 880.

Frequently asked questions

Can I re-felt a shed roof over the old felt?

It is generally better to strip off the old felt first. Laying new felt over old can trap moisture, hide rotten boards and leave an uneven surface that wears out faster. Removing the old covering lets you inspect the boards, replace any soft sections and fix the new felt directly to sound timber, which gives a far more reliable result.

How do I stop shed felt blowing off in strong winds?

Most felt blows off because the edges were not properly secured. Felt should be fixed at close intervals with galvanised clout nails, overlapped correctly and finished with timber trims or fascia boards along the edges. These stop the wind from getting underneath and lifting it. After a storm, check the edges first and re-fix any loose sections quickly.

Is it worth repairing an old shed or should I replace it?

It depends on the condition of the frame and floor. If the structure is sound and only the roof, door or a few boards are damaged, repairs are often worthwhile. If the floor and frame are widely rotten, or the shed is leaning badly, replacement may be more practical. A close look at the timber usually makes the answer clear.

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