How To Lay Felt On Concrete Roof

Go to a roofing merchant rather than b q for materials.

How to lay felt on concrete roof.

Most pros use this line to begin shingling working left and right toward the rakes. 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. The first section of the tiles is cut to size and attached to the roof starting at a lower edge and working up. Spread the mesh pieces side by side overlapping them by about 3 8 in 0 95 cm.

How to lay felt on a flat roof. If the felt is in a brittle aged condition then i would suggest you strip back to the concrete first. Installing any gutter drips. Laying the first nailed layer of underlay felt.

The felt keeps the roof deck dry before shingles go on protects against wind driven rain as shingles fail and increases fire resistance. Will last you 35yrs. Add about 2 inches 5 cm to each of your measurements before calculating the area. Step 1 prep work.

Next find the center of the roof at the top and the eave then snap a vertical chalk line. Step 2 placing the felt. If it were me i would go with a top quality sbs modified and polyester reinforced 2 layer felt system. Use roof adhesive to fix down the tiles as each one is slid into place and nail the tiles down.

Check to ensure the roof is in good enough condition to walk over. Lay fiberglass mesh over the roof and cut it to length. Start by measuring the length and width of one side of the roof in. Otherwise attach the tiles to the roof felt.

Then use a utility knife or scissors to trim away the excess so the mesh fits tightly against the roof. This will give you extra felt to hang over. Laying the felt the roofing felt should be applied in layers that overlap. 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.

Laying the second bonded layer of underlay felt. This layer is not bonded to the decking so that the decking can move without damaging the felt roof. Cutting your felt pieces. You can install the mesh over old roofing material or insulation.

As you work the paper can be tacked down in the center so it won t blow away.