How To Lay Felt On Concrete Roof

Cutting your felt pieces.

How to lay felt on concrete roof.

Calculate the area of your roof by combining the area of each surface. You can install the mesh over old roofing material or insulation. Add about 2 inches 5 cm to each of your measurements before calculating the area. Laying the second bonded layer of underlay felt.

Lay fiberglass mesh over the roof and cut it to length. If it were me i would go with a top quality sbs modified and polyester reinforced 2 layer felt system. Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it. As you work the paper can be tacked down in the center so it won t blow away.

Laying the felt the roofing felt should be applied in layers that overlap. If the felt is in a brittle aged condition then i would suggest you strip back to the concrete first. How to lay felt on a flat roof. This layer is not bonded to the decking so that the decking can move without damaging the felt roof.

In this tutorial videojug takes you through the necessary tools and easy instructions to installing a felt roll for the roof and other tips to keep in mind. Most pros use this line to begin shingling working left and right toward the rakes. You will be looking for any decking that has rotted or bowed. Step 2 placing the felt.

Spread the mesh pieces side by side overlapping them by about 3 8 in 0 95 cm. Installing any gutter drips. Laying the first nailed layer of underlay felt. The first section of the tiles is cut to size and attached to the roof starting at a lower edge and working up.

This will give you extra felt to hang over. Check to ensure the roof is in good enough condition to walk over. Will last you 35yrs. Otherwise attach the tiles to the roof felt.

Step 1 prep work. Then use a utility knife or scissors to trim away the excess so the mesh fits tightly against the roof. Use roof adhesive to fix down the tiles as each one is slid into place and nail the tiles down. Go to a roofing merchant rather than b q for materials.

The felt keeps the roof deck dry before shingles go on protects against wind driven rain as shingles fail and increases fire resistance.