How to felt a shed roof guide


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Difficulty rating: Low

This task is fairly straightforward.

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A shed is a great place to store all the tools you need to keep your garden looking beautiful. But it’s not just the tools and your garden that you have to look after – your shed will need a little care and attention to keep it looking its best too.
Replacing the felt on a shed roof might sound like a tiresome job, but it’s a vital one to ensure your shed is protected from the elements. Our step by step guide will help you get it done quickly and easily.

Step 1. What you need to felt a shed roof

  • Craft knife
  • Tape measure
  • Hammer
  • Roofing felt
  • Felt nails
  • Wood nails
  • Paint brush
  • High performance felt adhesive

 You may also need:

  • A step ladder

Step 2. Remove the old felt

Remove any existing timber fascia boards and put to one side. Use a claw hammer to remove the nails holding down the old roofing, then strip the old felt. Make sure the surface is clear of debris and protruding nails; if you find one, simply remove it or hammer it down flat.

Step 3. Measure how much felt you need

Measure the roof of your shed. You’ll need enough felt to cover the entire area of the roof with a little extra on each edge (around 5cm) to allow for overlaps at the eaves, and at the gable ends (approximately 7.5cm). For most sheds, you’ll need to cut 3 pieces of felt: 1 for each side of the roof, as well as a third section that will overlap the 2 side panels by about 30cm on either side and run along the top ridge of the shed.

Step 4. Apply the new felt

Apply the cut felt to either side of the roof, pulling it tight so that it lies flat before nailing it at around 10cm intervals along the length of the roof just below the apex. Nails along the bottom edge of the roof can be hammered in at wider intervals – around one every 30cm. Once the side panels have been secured in place, add the top section to the ridge and fix it using high performance felt adhesive applied with a paint brush, then nail it at the lower edge at 5cm intervals.

Step 5. Tidy the overhangs

Tidy up the overhang at each corner by folding it down and nailing it securely. Use your craft knife to cut a slit in the felt overhang at the apex of the roof, then fold the felt down there and nail securely at 10cm intervals along the gable. You can then re-attach fascia boards to keep your shed looking smart by hiding the folded over roofing felt at each gable end, using wood nails to secure them in place and your craft knife to trim away any excess material.

When that’s done, work along the sides of the shed, tucking the felt overhang up and under and hammering in nails to hold it in place.

Watch how to fit roof felt on a shed

This video gives a step-by-step guide on how to replace the roofing felt on a shed

Top tip
  • You may need to replace the felt on your shed every 2-3 years if it’s in an exposed location. You won’t need to do it as often if it’s sheltered.

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