Sealing a roof will help prevent leaks and keep water out of your home. Metal roofs need to be sealed every two years to stay in good condition. They also need to be sealed after storms and damaging winds. Sealing a roof is much simpler than other jobs on the roof, such as installing shingles or metal roofing. Sealing a roof is not very time-consuming and can go a long way toward keeping a home leak-free.
Things You'll Need
- Two ladders
- Wire brush
- Chlorine bleach
- Garden hose
- Stiff-bristle paint brush
- Patching cement
- Roof coating
- Roof coating brush
Inspect the roof, looking for cracks and gaps that may be causing leaks. Remove any flaking from the current roof coating with a wire brush. Look closely around seams and sweep away the debris with a broom.
Look over the roof and remove any loose debris and reattach any screws that are sticking up from the roof. Check for mildew spots and treat them by rinsing with chlorine bleach.
Wash the roof thoroughly with a garden hose. Verify that there are no puddles forming. These puddles can form if the house is not level, there is an indentation in the roof surface or if the gutters are clogged. Dry off the roof with clean rags.
Cover all seams and edges of flashing with patching cement using a stiff-bristle paintbrush. Overlap all of the seams by 1 inch and also cover any screw heads. Be sure to cover all roof seams, flashing and J-rail because these are the three areas where most of the leaking occurs. Let the patching cement dry for at least one hour.
Mix the roof coating and begin applying with a roof brush. Brush over the entire area of the roof and carefully follow the instructions on the label for proper coverage. Start on one end of the roof and work toward the other side. Do not apply too thick of a coat as it will dry and crack over time. Climb down the ladder and allow time to dry.
Tips & Warnings
- Position one ladder at the end of the roof so you can climb down without walking over the new roof coating.
- Do not attempt to seal the roof when it is raining or if the temperature is below 50 degrees Fahrenheit. This will affect the curing process of the sealant.
How to Control Roof Leaks
Treat a leaking roof as an emergency, because it can wreak havoc in your house in a very short time. Attend to...
How to Seal a Camper Roof
Campers often sit unattended outside for long periods of time, and the constant exposure to the elements allows rainwater to leak through...
How to Seal a Corrugated Roof
Corrugated roofing panels come in both metal and plastic and contain a raised ridge pattern instead of a flat surface. The ridges...
How to Seal Roof Flashing
How to Seal Roof Flashing. There are many places that flashing can leak on your roof. Sometimes you can tell where the...
How to Seal Coat and Protect a Metal Roof
Coating metal roofing with a sealant is an effective way to help prevent common leaks, forestall rust, and extend the life of...
How to Apply Kool Seal
Kool Seal is one of several reflective coatings on the market to finish or retrofit roofs increasing their thermal resistance and improving...
How to Spray Repair a Roof
Roof leaks left unrepaired, no matter how minor, lead to expensive fixes and replacement. When dealing with smaller leaks, they can be...
How to Apply Elastomeric Roof Coating
Elastomeric roof coating is a product designed to heal slight damage to roofing materials as well as protect the surface. "By fixing...
How to: Rubber Sealant for a RV Roof
RV roofs are highly susceptible to the elements. Rubber roofs often develop leaks which require immediate attention. The edges of the rubber...
How to Seal Over Asphalt Shingles
Asphalt shingles are used on 80 to 85 percent of all residential roofs. Because of this, there is a large segment of...
Which Roof Coating Is Best for a Flat Roof?
Flat roofs can't be really flat. Any roof must have some slope, or pitch, to allow water to run off. Any roof...
The Best RV Roof Sealers
The number of people choosing to travel by recreational vehicle (or RV) is rising as every day passes. People feel it is...
RV Sealant Removal
When your roof starts to leak, a window needs to be resealed or your exhaust vent needs to be replaced in your...