Installing and Maintaining Your EPDM Roof Drain
Getting the ideal epdm roof drain installed will be probably the most important thing you may do to avoid position water from ruining your flat roof. If you've spent any time on a roof after the heavy rain, you know exactly what I'm talking about. That will giant puddle sitting right in the particular middle of your rubber membrane isn't just an eye sore; it's a ticking time bomb intended for leaks.
EPDM, or ethylene propylene diene monomer if you would like to be elegant, is an incredible material. It's tough, it handles the particular sun well, and it lasts for many years. But even the best rubber roof on earth is going to fail if the drinking water has nowhere in order to go. That's in which the drain comes within. It's the literal bridge between your own roof surface and your plumbing, and when that connection isn't solid, you're likely to have a bad time.
Why Your Drain is usually the Most Vulnerable Spot
Let's be real for the second: a level roof is by no means truly "flat. " It's designed along with a slight frequency to push water toward a particular point. That stage is usually your own epdm roof drain . Because all the particular water gathers presently there, that specific area sees more tension than anywhere otherwise on the roof. It deals along with constant moisture, debris buildup, and the particular expansion and shrinkage of different materials meeting in one particular spot.
Many of the leakages I've seen on EPDM roofs don't happen in the middle of a large open sheet of rubber. They take place at the sides, the corners, and—you guessed it—the pumps out. When you mix a flexible rubber membrane having a rigid plastic material or metal drain pipe, you require a seal that may handle a little bit of movement. In case you just punch some caulk about it and call it up a day, it's likely to fail by next season.
Selecting the most appropriate Drain intended for the Job
Not all drains are built the same. When you're shopping for a good epdm roof drain , you'll usually encounter a few different styles. You've got your standard inner drains that move straight down with the roof deck, then you've got scuppers that kick water out the part of the wall.
For many residential or even light commercial EPDM jobs, you're looking at a "insert" or "retrofit" style drain. These are great because they have a wide flange that sits flat contrary to the roof deck. You want a flange that is suitable for EPDM adhesives. Some are made of heavy-duty plastic material (like ABS), while some are spun aluminum. Truthfully, aluminum is usually the particular way to go if you would like something which won't split after ten yrs of baking in the sun.
The Secret to a Leak-Proof Installation
Installing the drain isn't just about trimming a hole and dropping it in. It's all about the particular "sandwich. " A person want the drain flange to become sandwiched between the roof deck and the EPDM membrane layer, but there's a specific way to do it so it really stays waterproof.
First off, almost everything has to be clean. I am talking about really clean. In case there's a speck of dust or even old roofing stuff on that flange, the new seal off won't stick. Most pros use the primer specifically made intended for EPDM. You apply the primer to both the drain flange and the particular underside of the particular rubber. Once it's tacky—not wet, but tacky—you roll the particular rubber down onto the flange.
Don't just make use of your hands in order to press it down. You need the small silicone roller to really marry those two surfaces together. If a person see air bubbles, you've got to work them out toward the sides. After the membrane is down, you'll usually install the target patch or even a part of uncured blinking tape over the top for additional security. This produces multiple layers of protection that maintain the water moving into the tube instead of under your shingles.
Dealing with the particular "Ponding" Problem
One thing that will drives people nut products is "ponding. " You install a brand-new epdm roof drain , however you still see a small circle of drinking water sitting around this after a surprise. This often occurs because the drain flange itself sits a tiny little bit higher than the particular rest of the particular roof surface. It creates a little dam.
To fix this particular, some installers such as to "sump" the particular drain. This basically means you develop a slight depression within the roof insulation or the decking right in which the drain sits. It doesn't have in order to be deep—maybe half an inch—but it's enough to ensure the drain is the lowest point in the area. Much more a world of difference in how quick your roof dries out after the downpour.
Maintenance is Non-Negotiable
I realize, nobody wants to climb up on their roof every few a few months, but if you possess an epdm roof drain , you kind of have in order to. Leaves, twigs, and even those odd little helicopter seeds from maple trees and shrubs love to congregate around roof drains.
If the grate gets clogged, your roof turns into a swimming swimming pool. EPDM is solid, but water is heavy. A several inches of standing up water across a large roof may put thousands of pounds of unexpected stress on your structure. Plus, when that will water sits there for weeks, this starts to grow algae, which may eventually break straight down the adhesives used in your stitches.
Clear the debris out at least twice a 12 months. Once in the spring and once within the late fall. While you're up there, give the drain a little poke. Make sure the clamping ring is restricted and the grate isn't cracked. It takes five minutes, yet it could save you a $5, 000 fix bill down the road.
The Importance of the Clamping Ring
Speaking of clamping rings, don't lose yours! Most high-quality epdm roof drain setups come with the metal or plastic material ring that bolts down over the particular membrane. This ring acts just like a bodily backup towards the stuff. It literally pushes the EPDM membrane layer against the drain body.
If your drain doesn't have a clamping ring, you're relying 100% upon the chemical connection of the glue. That's okay with regard to a few years, but as the particular building shifts and the rubber age groups, that mechanical clamp is what's likely to keep the drinking water out. If your own current ring will be rusted or the bolts are snapped, do yourself a favor and replace this now.
Normal Mistakes to Avoid
One of the biggest mistakes I realize DIYers create is definitely the wrong sealant. They'll proceed to the hardware store and purchase a tube of standard silicone or "all-purpose" roofing cement. Perform not use asphalt-based roofing cement upon EPDM. The petroleum within the asphalt will literally eat the rubber. It turns the EPDM into the gooey, wrinkled mess which will never close off again.
Constantly use products specifically labeled for EPDM. That usually indicates EPDM primer, splice adhesive, and lap sealant. Lap sealant is that thick, self-leveling stuff that will you apply at the edges of the spots. It's made to remain flexible so it may move using the roof without cracking.
Another mistake is cutting the hole in the silicone too big. You want the EPDM to overlap the drain flange mainly because much as feasible. If you cut the hole the same size as the drain opening, a person have hardly any area for error. It's better to have a smaller hole which you carefully stretch or even trim once the particular rubber is securely glued down.
Wrapping Things Up
At the end of the day, a good epdm roof drain is really an easy piece of hardware, but it's carrying out a massive job. It's the gatekeeper for your home's dry inside. Whether you're setting up a new 1 on a garage extension or fixing a good old one upon a commercial building, taking the time to prep the particular surfaces, utilize the correct primers, and be sure the tight mechanical seal off is the only approach to take.
It's not the most glamorous a part of house maintenance, but there's a certain reassurance that comes along with hearing the water rushing down the downspout instead of dripping through your ceiling. Keep it clean, keep it sealed, as well as your EPDM roof will take care of a person to get a long, lengthy time.