Can You Put Felt Over Felt Without Leaving Any Marks?

When it comes to ensuring the waterproofing of a flat roof, it’s essential to follow the right guidelines. To calculate the required materials, start by multiplying the length and width of the roof. For optimal waterproofing, it is recommended to use a combination of roofing materials. This typically includes applying two layers of underlay felt, followed by one layer of roofing felt. This layered approach provides superior protection against water infiltration. Please note that these guidelines were last updated on December 22, 2021, and it’s advisable to check for any updates or specific recommendations for your roofing project to ensure it meets current standards.

Is it possible to apply new roofing felt over existing felt on a shed? When it comes to refelting your shed roof, it’s important to note that if you already have old felt in place, you will need to remove it before proceeding with the replacement. However, if you are constructing a new shed, you can skip this initial step. This means that if your shed already has roofing felt that needs replacing, you’ll need to take the extra step of removing the old material, whereas with a new shed, you can directly apply the new roofing felt.