Rubber Roofing Pocket Application Guide For technical assistance call: 1-800-225-4714 EXT 7888 www.RoofKitRoofing.
Table of Contents Page 2........................................................ General Information Page 2.................................................... Cautions and Warnings Page 4....................................................... Recommended Tools Page 4........................................................... Available Products Page 5......................................................... Surface Preparation Page 6.......................................................................
GENERAL INFORMATION This APPLICATION GUIDE has been designed to give the installer a GENERAL DESCRIPTION of a RoofKit fully adhered roof system. This APPLICATION GUIDE is intended as a reference aid only and is not intended or meant to be allinclusive. Prior to the installation of a RoofKit roof system, it is recommended that the installer view the RoofKit “Instructional” Video. This video is available from your local RoofKit dealer or visit RoofKitroofing.com.
• Avoid adhesive contact with skin. Contact with skin should be avoided and necessary protective equipment and clothing should be worn. • Avoid adhesive contact with eyes. Contact with eyes should be avoided and necessary protective equipment should be worn. • Safeguard against falling by reading ladder manufacturer's warnings; and by establishing a perimeter warning system utilizing ropes with flags attached. Surfaces may be slippery when wet or covered with frost.
Tools Recommended The following list is for reference only, as tools and equipment may vary from project to project: • • • • • • • 2-inch steel or hard rubber roller Scissors Chalk line Tape measure Solvent resistant rubber gloves Stir stick for adhesives 9-inch paint roller frame and several large nap, solvent compatible roller covers • Caulk gun • Screw gun and hammerdrill RoofKit Products Available • RoofKit Rubber Roofing Membrane (45 mil thickness) available 10' x 20' or 15' x 25'.
ROOF SURFACE PREPARATION RoofKit Rubber Roofing Membrane will adhere to insulation boards compatible with RoofKit adhesives (this does not include polystyrene insulation). The roof membrane will also adhere to plywood, OSB (Oriented Strand Board), one-half inch (1/2") high-density wood fiberboard, and concrete. If polystyrene insulation is used, cover the insulation with one-half inch (1/2") high-density wood fiberboard. Butt all insulation boards together, staggering all of the joints.
INSTALLATION Unroll the RoofKit Rubber Roofing Membrane over the substrate so that the sheet is in the desired position and is wrinkle free. If more than one roll of membrane is required, subsequent rolls must over lap the prior roll a minimum of four inches (4") for seaming. Care should be taken to ensure the membrane overhangs the perimeter of the roof at least three inches (3"). Allow the RoofKit Rubber Roofing Membrane to relax for approximately 30 minutes depending upon weather conditions.
Contact Adhesive Application Open and thoroughly stir the Contact Adhesive. Using a solvent approved roller, apply Contact Adhesive to both the substrate and the membrane at a rate of sixty (60) square feet per gallon. Use care not to get adhesive into the seam area(s) (See Figure 4). Allow the adhesive to dry to the finger touch of tacky, but not stringy (approximately 20 to 35 minutes). Then carefully fluff air under the top half of the membrane and roll the membrane into the glued substrate.
membrane. Caution: limit foot traffic on the membrane while adhesive is curing. The sheet offers less resistance until the adhesive is completely cured. Repositioning of the membrane is possible while the adhesive is still wet. After the adhesive begins to set-up (approximately 20 to 35 minutes) apply pressure with a push broom to ensure good contact. This application requires a porous substrate, such as High Density Fiberboard. Fold back the remaining unglued portion of membrane and repeat this process.
contact fashion. All membrane-to-membrane seam applications require RoofKit Seam Primer and 5" Cover Strip to be installed over the entirety of the seam. PIPE PENETRATIONS When laying out the field membrane and a pipe is encountered, roll the folded membrane to the pipe. Be sure to maintain the proper alignment of the membrane with the roof edge, wall, and seams. Make a straight cut from the pipe to the nearest edge of the field seam (see Figure 5).
3. Install 6" Reinforced Strip to the substrate with Fastening Screws and Plates every twelve inches (12"). Ensure that the 6" Reinforced Strip is butted to the curb detail. Clean and prime all membrane surfaces, including the 6" Reinforced Strip, and allow to dry. 4. Roll the membrane around the curb, leaving a triangle of membrane, and turning the membrane up on all four (4) sides.
7. The membrane should travel up the curb at least eight inches (8") or to the top of the opening if it is less than eight inches (8"). See Figure 7, previous page. SEAMING MEMBRANE After adhering the membrane so that the width of the seam is the width of the 3" Seam Tape, using a crayon, mark a line one-half inch (1/2") from the leading edge of the top membrane sheet every 3'-4' (shown in Figure 8). This will provide a guide for the correct placement of the seam tape.
Unroll the Seam Tape along the length of the seam, tape side down, aligning the Seam Tape paper with the crayon marks. Then with the release paper still in place, roll the Seam Tape with a steel or hard rubber roller. This will set the Seam Tape into place and keep air from being trapped under the tape. Fold the top membrane onto the Seam Tape release paper (shown in Figure 10). Reaching under the top ply of membrane, pull the release paper away from the Seam Tape at a 45º angle to the seam.
PERIMETER WALLS AND INSIDE CORNERS Install to the substrate the RoofKit 6" Reinforced Strip with Fastening Screws and Plates every twelve inches (12"). Ensure that the 6" Reinforced Strip is butted to the parapet wall. Apply Multi-Purpose Bonding Adhesive to the 6" Reinforced Strip, folded membrane, and the wall area. Starting at the base or angle change between the corner and opposite end of each wall, begin to roll the membrane up and along the wall. Roll the excess membrane towards the corner.
Starting at the base of the inside corner pocket, press the two glued surfaces together. Adhere the pocket to either wall (shown in Figure 11A) with Multi-Purpose Bonding Adhesive. Install a piece of Tape Flashing eight inches (8") wide extending from the bottom of the pocket fold to the top. The Tape Flashing should extend four inches (4") onto the pocket and four inches (4") onto the wall. Caulk all edges of the tape flashing. (shown in Figure 12).
OUTSIDE CORNER DETAIL 1. Prior to installing any flashings, using the scrub pad, apply Seam Primer to all areas to be flashed. Cut the Tape Flashing twelve inches (12") by twelve inches (12"), or enough to cover the corner area. Round all corners of the Tape Flashing. After the Primer has dried, fold the flashing in half. Place the Tape Flashing against the vertical surface so that three inches (3") overlaps on one side of the corner and nine inches (9") overlaps the other side.
2. Install a second layer of twelve inch (12") by twelve inch (12") Tape Flashing over the first, but reverse the process by installing the nine inch (9") half overlapping the previously installed three inch (3") piece. See Figure 13B. This patch should extend onto the roof surface a minimum of four inches (4") and up the vertical a minimum of eight inches (8").
RUBBER PIPE BOOT WITH STEEL CLAMP 1. Measure the outside diameter of the pipe and cut the pipe boot at the corresponding index ring. DO NOT CUT DIAGONALLY THROUGH THE INDEX RING. The Pipe Boot should fit snugly over the pipe. 2. Install the Pipe Boot over the pipe and turn the boot inside out exposing the bottom of the boot flange. Apply Seam Primer at least ten inches (10") in all directions from the pipe.
2. Make sure to clean the protrusion and remove any loose flashings. Scrub Seam Primer to the area being flashed and allow to dry. 3. Cutting from Tape Flashing, install a four inch (4") piece extending two inches (2") up the protrusion and two inches (2") onto the roof deck. Wrap the entire protrusion, allowing a two inch (2") overlap of each flashing. Use as many pieces as necessary to flash the pipe. 4.
T-JOINTS A T-Joint is formed when two layers of RoofKit Rubber Roofing Membrane form a seam that travels under, or over, a third layer of membrane. The center of the “T”is where the middle layer ends and the top layer bridges over the middle layer. This T-Joint can provide an opportunity for water to seep under the membrane. To avoid problems at this area, a T-Joint patch should be installed as follows: 1.
Where a Field Seam Travels Under a Wall Flashing. Field Seam at Vertical Change Where a field seam makes a radical bend (turns up a wall or down over a perimeter edge), a six-inch (6") wide by twelve inch (12") long piece of Tape Flashing is to be adhered over the seam. Round the corners of the Tape Flashing. Follow standard flashing procedures; install the flashing so that half of the flashing is on either side of the area to be covered. Finally, use Rubber Caulk to seal all edges.
Where a Cover Strip Travels Under a Pipe Boot or Other Flashing. IMPORTANT: ONLY TAPE FLASHING IS USED FOR T-JOINT PATCHES. ALL T-JOINT PATCHES SHOULD BE THOROUGHLY ROLLED WITH A STEEL OR HARD RUBBER ROLLER. METAL EDGE DETAIL Fully adhere the membrane to the roof edge. Allow the membrane to wrap completely over the edge of the roof a minimum of three inches (3"). Install the metal edge using 3/4" minimum roof nails every 4" to 6" on center.
When splicing two pieces of Cover Strip, allow for a minimum overlap of four inches (4"). After properly rolling the entire Cover Strip, install a six inch (6") piece of Tape Flashing over any T-Joints. Seal all exposed edges with Rubber Caulk. ROOFKIT MEMBRANE TO SHINGLE TRANSITION When installing a RoofKit Rubber Roofing Membrane system with a tie-in to an existing shingle roof, remove three (3) courses of shingles. Adhere the membrane onto the sloped roof deck.
WOOD DECKS IMPORTANT: THE ROOFKIT MEMBRANE IS NOT DESIGNED AS A FINAL WALKING SURFACE AND SHOULD BE PROTECTED FROM EXCESSIVE FOOT TRAFFIC. When installing a wood deck over the RoofKit Rubber Roofing Membrane, the deck sleepers should be laid over an extra piece of EPDM membrane called a separator sheet. The EPDM separator sheet should extend a minimum of two inches (2") past the sleeper on all sides. See figure 20. DO NOT attach the sleepers through the RoofKit Rubber Roofing Membrane.
REPAIR OF ROOFKIT RUBBER ROOFING MEMBRANE If your RoofKit Rubber Roofing Membrane is punctured or torn, repairs can be made easily by: 1. Cleaning and priming the membrane with Seam Primer at least four inches (4") in all directions from the puncture or tear. 2. After the primer has flashed off, cut a piece of Cover Strip three inches (3") larger than the puncture or tear and round all corners. Remove backing and place over puncture. 3. Hand roll the entire Cover Strip with a steel or hard rubber roller.
GLOSSARY BRIDGING: Occurs when the membrane is unsupported at a juncture or angle change. Moisture condensing on the bottom of the membrane can cause further delamination. Areas where bridging occurs should be repaired and re-flashed. CONTACT ADHESIVE: RoofKit Contact Adhesive is used to adhere the field membrane to substrate, walls and curbs. It should be thoroughly stirred before using. (Do Not Use For Seams) COVER STRIP: Five inch (5") wide cured EPDM membrane with butyl tape laminated to one side.
METAL EDGE DETAIL: Used to create a finished appearance and prevent water from running down the surface of fascias and walls. The Metal Edge is made from painted aluminum and galvanized or painted steel. MULTI-PURPOSE BONDING ADHESIVE: RoofKit MultiPurpose Bonding Adhesive is used to adhere the field membrane to walls, metal, curbs, and rubber to rubber applications. It should be thoroughly stirred before using.
T-JOINT: An area formed when two layers of RoofKit Rubber Roofing Membrane form a seam that travels under, or over, a third layer. The center of the “T" is where the middle layers end and the top layer bridges over the middle layers. TAPE FLASHING: Uncured EPDM membrane with adhesive tape that is used whenever the field sheet has to be cut to accommodate outside corners, pipes, T-Joint patches and field seams making angle changes.
QUICK REVIEW OF APPLICATION PROCEDURES 1. SUBSTRATE a. Plywood, OSB or high-density wood fiberboard. b. Concrete. c. Insulation boards – polyisocyanurate. 2. INSULATION a. Insulation joints are butted together with no gaps. b. Correct fastener pattern and quantity used. c. 100% adhesion of the membrane to the substrate. 3. FIELD SEAMS a. Seam Primer should be visible past the leading edge of the field seams (over scrub). b. There are no wrinkles, void or fishmouths in any portion of the field seams. c.
6. PENETRATIONS a. Tape Flashing is applied in two layers a minimum of eight inches (8") above the roof deck. b. Pipe Boots are terminated with a Pipe Boot Steel Clamp and are caulked with Rubber Caulk. 7. METAL EDGE DETAIL a. Metal Edge is prepped (cleaned with seam primer), and of sufficient gauge and adequately fastened to withstand wind uplift. b. Properly stripped in using five inch (5") wide Cover Strip. Cover Strip should extend a minimum of two inches (2") beyond any fastener. 8.
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FREQUENTLY ASKED QUESTIONS GENERAL 1. Can I use RoofKit EPDM membrane as a pond liner? No, the RoofKit membrane is a roofing grade material. Use only certified fish-friendly membrane available by special order. 2. What are the sizes, thicknesses and roll weights of RoofKit EPDM membrane? SIZE 10'x 20' 15' x 25' 10' x 50' 10' x 100' 20' x 50' 20' x 100' 10' x 50' 10' x 100' 20' x 50' 20' x 100' THICKNESS 45 mil 45 mil 45 mil 45 mil 45 mil 45 mil 60 mil 60 mil 60 mil 60 mil WEIGHT 60 lbs. 113 lbs.
7. Will the RoofKit EPDM membrane be damaged by asphalt-based products? Yes. The membrane should not come in contact with roof cement, black jack, or other asphalt-based products. 8.
14. Can I install RoofKit EPDM membrane directly over an existing roof? Yes, but a new commercial grade roof Insulation board, OSB board, or plywood is required. 15. How do I fasten the roof insulation board? Use RoofKit plates and screws, installing a minimum of 10 plates per 4' x 8' board. (See Application Guide.) 16. Can I apply RoofKit EPDM membrane directly to a plywood surface? Yes, making sure that the surface is clean, dry, even, with no sharp corners. 17.
22. What happens if the RoofKit Latex Bonding Adhesive freezes? This could damage the adhesive and affect its performance. 23. How do I use the RoofKit Multi-Purpose Bonding Adhesive? The Multi-Purpose Bonding Adhesive can be used for any application on the roof: adhering the membrane to a substrate or membrane-to-membrane seaming. This adhesive must be applied to both the membrane and the substrate in a thin coat using a small-nap paint roller.
27. What are the container sizes and coverage rates for the RoofKit adhesives? Latex Bonding Adhesive: 1 gallon and 3.5 gallons, 100 sq. ft. per gallon Multi-Purpose Bonding Adhesive: 1 gallon, 60 sq. ft. per gallon Contact Adhesive: 5 gallons, 60 sq. ft. per gallon 28. Can I use wood glue to install RoofKit EPDM membrane? No, use only RoofKit adhesives to ensure a quality installation. SEAMING 29.
32. How many people are needed to install a RoofKit EPDM system? This would depend on the size of the project, but for many reasons it is recommended to have at least two people. 33. How is the RoofKit Termination Bar used? The Termination Bar is used for the attachment of the membrane at wall and edge details. It is attached with RoofKit screws (or masonry fasteners, if required). 34.
38. How do I repair a large tear or rip in the RoofKit EPDM membrane? Cut a patch out of RoofKit Cover Strip to extend 3" past the tear, making sure to round all corners on the patch. Clean the torn area with RoofKit Seam Primer and a scrub pad about 2" wider than the size of the patch. Wait for the Primer to dry, then pull off the release paper on the Cover Strip and place the patch over the primed area.
1 2 3 4 5 6 7 7095 Americana Parkway Reynoldsburg, OH 43068 For technical assistance call: 1-800-225-4714 EXT 7888 8 www.RoofKitRoofing.com Rev.
