Built-in gutters were a popular roofing feature in buildings built before 1925.
Built-in gutters, also known as box gutters, collect and direct rainwater from building roofs away from the foundations of those buildings. Built directly into the side of the roof, these gutters form an integral part of the building's drainage system. To function as needed, box gutters require maintenance. If they aren't maintained, water may back up, causing damage to roof shingles, discoloration of building siding or soil erosion at the foot of the building. Upkeep of built-in gutters can prove difficult, as many are lined by formed metal, which can corrode, causing even more damage to the building surface from the corrosive tainted water. Patches and paint can restore the metal.
Instructions
1. Place the ladder against the building side. Take care not to allow the ladder to lean directly onto the gutter, which can crush the gutter.
2. Have an assistant hold the base of the ladder steady and climb the ladder until you're in reach of the gutter. Clean any debris from the gutter such as tree limbs or leaves. Remove obstructions along the length of the gutter, especially any that have blocked the downspout openings, preventing water from running down the gutter to the exit points. Sweep out the gutter using a broom or stiff-bristled brush.
3. Take a water hose and water down the gutter, removing any dirt. Allow the gutter to dry completely.
4. Examine the metal lining in the gutter for holes or breaks. Repair holes by placing a patch of a waterproof roofing membrane cut to size using a utility knife and placed over the existing gutter lining. Install the membrane by applying a layer of rubber adhesive to the membrane surface before pressing the membrane firmly into the gutter, conforming to the shape of the gutter. Allow the adhesive to dry overnight.
5. Apply a layer of oil-based paint to the gutter lining to protect it from corrosion. Build up the layer of paint by applying multiple coats until the paint is solid in color with none of the lining showing through. Allow the paint to dry completely.
