Installing Rolled Roofing Over Existing Rolled Roofing

This aluminum flashing protects the edges of the roof sheathing.

Installing rolled roofing over existing rolled roofing.

Install a drip edge around the perimeter of the roof. As with the felt paper it is very important to properly align the roll roofing. Installing over an existing roof since roll roofing is very light and thin but not particularly durable it s a great option for installing over an existing roof. Watch licensed home inspector john villella owner of all pro home inspection explain this rolled roofing material issue that was found at a recent home insp.

Spread the roofing cement along the. It needs to be nailed down with each nail spaced roughly 6 inches apart. Rolled roofing is very adaptable and can be cut into 12 inch by 36 inch strips to act as hips and ridges or 9 inch strips for eaves and rakes. If removing your current shingles is a problem it is usually permissible to re roof over your existing roof with rolled roofing.

After the eave drip is in place it is time to lay the roll roofing. Installing the rolled roofing 1. Use a trowel to scoop up the roofing cement. Sweep the roof deck with a push broom in order to remove debris such as stones leaves twigs moss and loose.

Prepare a valley between joined roofs by cutting a strip that is 18 inches wide and covers the entire length of the. Even small cracks in the existing roof can jeopardize the integrity of the layer of roll roofing. After it is unrolled and spread into place over the roof it must be nailed down. Cut the rolled roofing.

Step by step roll roofing installation 1. Using a measuring tape measure 35 inches 89 cm up from. Apply roofing cement to the roof. Hammer raised nail heads into the roof deck to ensure a smooth surface for an effective installation of the.

Mark a chalk line to identify the end of your first layer. Add a second piece of full width roll roofing over the first.