An important aspect towards achieving a water repellent roofing system is the installation of roof pipe flashing. Typically, pipe flashing prevents the entry of water into the joints connecting the roofing and pipe. Here is a systematic guide explaining the step-by-step installation of roof pipe flashing performed by a professional roof plumber.
Step 1. Selection of material
Flashings come in different types of materials including aluminium, copper, lead, zinc, stainless steel among others. The flashing chosen will depend on the budget of the property owner. Copper provides the greatest durability; however, its price tag takes it out of the reach of many people. Aluminium is the popularly used material for roof flashings resulting from its high durability, cost-effectiveness and easy installation resulting from its suppleness.
Step 2. Preparing the flashing
The flashing should feature an opening in that it should be pre-cut based on the diameter of the roof pipe. In case the flashing is not pre-cut when buying, the roof plumber is proficient enough to cut it on his or her own. Generally, the roof plumber will create an opening in the flashing that is slightly smaller in contrast to the pipe diameter to stop any leaks resulting from the space flanking the flashing and the pipe. Aluminium's softness gives the roof plumber an easy time when cutting flashing.
Step 3. Install the flashing
Next, the contractor slides the flashing above the pipe, making certain that the flashing sits closely on the roof surface. Given that the opening or gap in the flashing is a little smaller compared to the pipe, a close fit can be realised around the pipe.
Step 4. Secure it in
With the use of a hammer, the roof plumber nails both sides of the flashing onto the roof surface so that it's firmly fitted. The choice of nails is equivalent to the same material type as the flashing. This helps prevent any reactions with opposite metals.
Step 5. Apply sealant
The roof plumber quickly applies spray sealant to the screwed nails. An even coating of seal is applied over the nail holes to prevent the holes from becoming openings for water leakage. Note that the sealant forms a lasting seal on the nails that is resistant to cracks, rust or oxidisation.
Step 6. Set up the rain collar
Finally, the contractor glides the rain collar above the pipe and adjacent to the flashing. After that, the screw is twisted firmly to secure the rain collar in position above the flashing. This seeks to provide further protection to the flashing as well as the roof.
Get in touch with a roof plumber from a business like O'Boyles Roof Plumbing in your area if you have specific questions about roof piping and its installation.