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Blog / How to guides

How to felt a shed roof

06 February 2017

Does your shed's roofing felt need replacing? Fitting a felt roof is easy when you know how. All you need is a ladder, a few basic tools, and this free guide and video tutorial.

You’ll need:

  • Hammer
  • Utility knife
  • Ladder
  • Screwdriver

1 - Measure and cut the felt

measuring roofing felt before fitting to shed
Measure twice, cut once

Measure the length of your roof, and cut a strip of felt to size, allowing a couple of inches either end for overhang.

2 - Lay out and affix the felt

rolling out roof felt on a shed roof
Make sure the felt sits evenly with no wrinkles or creasing

Roll the felting out over the roof, and smooth out any creases.

Tack it in place with tacks around six inches apart along the edge, then tack along the edges of the roof batons and gable tops.

tacking roofing felt onto a shed roof
Use galvanised clout nails to tack your felt to the roof

Repeat for the opposite side. You may need two or more strips either side, depending on the size of your shed.

3 - Add the capping felt

tacking capping felt onto a shed roof
The capping felt is to make sure no joins are open to rainfal

Now that both eaves of your shed are covered, measure and lay a final piece of felt along the apex of the shed. This is your ‘capping felt’. Tack this down on either side at six inch intervals.

4 - Finish the shed roof

Affix the fascia boards and finials to the ends of the building. Drill pilot holes before screwing them on to avoid splitting the wood.

5 - Maintenance

Check your felt regularly (at least annually) for signs of wear and weathering. If individual strips show signs of damage, they can be replaced without having to renew the entire roof. Check out our guide for repairing shed roof felt here. In the meantime, have a look at how the Waltons experts fit roofing felt to a shed roof.


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