Can You Felt a Shed Roof in the Rain

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You want to make sure that a shed that contains your valuable personal belongings is waterproof, roof to floor. One of the most effective ways to prevent unnecessary leaks and water exposure on your shed roof is to incorporate a roof felt panel that helps your shed’s roof breathe. Attaching felt to your shed’s roof can be an easy task, but can you felt a shed roof in the rain?

Felt is a material that keeps your roof dry by absorbing water and then repelling it, allowing your shed’s roof to breathe. Roofing felt is best accomplished when dry to avoid ripping when you are adding shingles, but it is possible to apply in the rain since it repels water effectively.

If you need to put on your felt to protect your new shed from an incoming storm, it may be best to get out there and do it even with a light shower. Keep in mind that working in the rain on a roof in any manner could be dangerous, but if you need it in a pinch, that option is available to you. Planning is key to any addition to your shed, so read on to learn more about how to felt your shed in the rain.

Is It Possible to Apply Felt to Your Shed in the Rain?

Because felt is repellent to water, it is possible to install felt onto your shed in the rain. Before you go out there and risk your health, consider some of the following concerns.

  • Working in elevated spaces in a thunderstorm can be dangerous, as at any moment a lightning strike may connect near your working area and cause you bodily harm.
  • Rain will cause your equipment to become slick, such as ladders, staple guns, and nails. While it is possible to use these tools in the rain, without proper protective equipment, you may slip on a watery surface.
  • If you are planning to apply your felting and shingles in one day, we recommend allowing your felt to dry before applying the shingles. If you apply your shingles while the felt is wet, you are prone to running into further damages that may eventually cause leaks.

Applying felt to your shed’s roof will help prevent any excess moisture from rotting your shed’s roof over time. The sooner you can implement felting onto your shed, the better. Felt acts as a protective layer between the structure of your shed and the outer layer of shell-like shingles. If any moisture is able to sink past the shingles, the felt will absorb that moisture and distribute it properly to protect your shed’s roof from rot.

Planning is essential in the proper construction of your shed’s roof, so make sure to pick a day that the weather is predictable, if applicable. You will need to clean the roof decking of debris, nails, leaves, or other objects.

Make sure to thoroughly clean your roof before applying felt so that you can keep from having the wood exposed to harmful outside weather forces. Use coarse sandpaper to scrape off any felt from earlier construction if you are planning to re-felt your shed’s roof.

These are a few of the many elements that you will have to consider balancing when you are applying felt to your shed’s roof. Make the construction process easier on yourself by setting yourself up for success. Find a group of hands to help you apply each section of dry felt to your shed’s roof and apply shingles for a hard exterior coat that will protect your roof from harmful debris, water, or other destructive weather elements.

Is It Necessary to Apply Roofing Felt on a Shed?

Maybe you have just built your own shed, but you are unsure how to seal the roof off.

Is it necessary to apply roofing felt on a shed? If you are considering adding shingles to protect your shed’s roof from harmful weather elements such as wind and rain, you might want to consider investing in felt before adding the shingles.

Felt is a relatively inexpensive project that will save you tons of money that you would have otherwise had to have spent on repairs. Felt is the first line of defense protecting your shed’s roof structure and sealing it from excessive moisture which can lead to rot. Harsh wind and rainstorms may be able to penetrate the protection of protective shingles, so it is best to be on the safe side and apply felt to your shed’s roof.

Adding roofing felt will give you an inexpensive moisture barrier that will prevent water from finding its way onto the OSB joints and causing structural damage. The most essential function of most shed types is to create a dry space to hold equipment, provide a workstation, and protect your personal belongings, and the best way to keep your roof sealed from too much moisture is by applying felt to your shed’s roof.

Covering the joints made by the sheathing created when applying felt will help keep OSB joints dry and prevent cracking from moisture or cold temperatures. Add multiple layers of this inexpensive sealant for the ultimate protection against harmful weather elements. While felt is not technically waterproof, it is a great repellent and works effectively alongside a tough exoskeleton such as shingles.

How to Apply Roofing Felt on Your Shed

If you are curious to learn more about how to apply roofing felt onto your shed, you have come to the right place.

First, calculate the area of your roof and combine the surface area to assess how much roofing felt you will need. Roofing felt usually comes in panels that cover 432 square feet, and you need to give a little room in your calculations to accommodate the overlap that you will need on each joint. We recommend buying an extra pack of felt if you need more or mess up a certain panel section.

Next, cut the appropriate felt sections to size using a hooked blade knife. Make sure to cut your sections on a flat surface to create accurately sized felt sections. Use a yardstick to trace a straight, level line into the felt before making the final cut. Felt is malleable, and you can finesse the material to your benefit along the way.

Remove any debris on the surface of your roof. Remove grime left from felt residue on the surface of your roof with a putty knife. Make sure to keep an eye out for any loose nails or screws, and replace them. Make sure the roof is dry before applying the felt.

You can apply a waterproof paint or primer to make sure your felt attaches to the materials on your roof and provides a tight seal.

How to Re-Felt Your Shed Roof: A Few Tips

If you are applying felt onto a shed that has already had felt on it once before, you are going to follow a lot of the steps of the above model. If you still are hesitant to get out there and apply felt to your shed’s roof, take heed of the below tips and tricks to promote proper reconstruction. If you have started to notice that felt is tearing off of your existing shed’s roof, it may be time to repair it.

First, assemble your tools. You will need a ladder, hammer, screwdriver, Stanley knife, shed roofing felt, and felting nails. Remember that most sheds are not designed to support the weight of a full-grown adult, so stay off the roof and on a ladder as much as possible when attaching felt onto your shed’s roof.

Strip off the old felt and remove any existing residue with a putty knife to ensure a clean, dry surface to attach your new felt pieces to. You can use the hammer’s claw and the Stanley knife to pull away the previous felt on our shed.

Next, make sure that you measure your felt pieces twice, and cut them down to size. You can place the felt directly on the roof and nail it down with felt nails, or you can apply a waterproof paint seal to attach your felt pieces easily and effectively to the roof of your shed. When working on a slope, make sure to start your application at the bottom of the roof and work your way to the upward slope. You want felt to overhand on three sides to promote proper drainage. This is why it is important to measure twice!


As you can see, there is a lot to consider when approaching the proper construction of the roof of your shed, and applying felt is a great way to protect your shed’s roof from excessive moisture and rot. Since felt is an effective water repellant, you can put felt on the roof of your shed when it is raining, although it is best to apply shingles when the felt is dry to avoid damage that may eventually cause leaks. Stay on the safe side and invest in your shed’s roof protection with felt.

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