Filter Products . ... We build and ship curbs … Seam-to-seam (R&S Seam Clip) side flanges come standard for a complete weather-tight seal. Instead, it is well worth taking a few extra minutes to install an “under/over” curb, which places the upslope side under the roofing in a true shingled lap between the curb and the roof. specify a standard Va inch or V4 inch of slope per foot but should make provisions in his design for positive drain-age. SBS 11.3.5-1 Roof Anchors (typical) SBS 11.3.5-2 Roof Anchors (conventional system) SBS 11.3.5-3 Roof Anchors (PMRA) 12 PROTECTED MEMBRANES and OTHER DETAILS 13 METAL FLASHINGS 14 THE ROOF as a PLATFORM SBS 14.3.3 Structures and Equipment (planter pre-curb) height (12" min. It is not necessary to cut out the entire area of the roof curb. Fax: 860-848-0503. Internally reinforced as needed for proper … Download PDF. Taking these four points into account in your next metal roofing project where roof curbs are required will help assure a well-installed, weathertight condition that should last just as long as the metal roofing system itself. Installing curbs that rest in the flat, lower, panel area of metal roofing invites water tightness problems since the curb now has to be installed and sealed in the most vulnerable area – the surface where rainwater flows. Roof Curbs for Standing Seam Metal Roofs Pick the Proper Material: A galvalume-coated roof doesn’t mean that a galvanized steel roof curb is the best thing to use – in fact, galvanized roof curbs are … At U.S. PLY INC. we try to help our clients in anyway possible. Top of all roof curbs shall be level, with pitch built into curb when … Manufactured with the highest quality craftsmanship and built to your project’s exact specifications. MENU CDI CUSTOM CURB ADAPTERS CURBS. We are headquartered in Ringgold, … Standard roof curbs are manufactured of galvanized steel with continuously welded seams and mitered corners providing air and water tight construction. Standing Seam Roof Curbs install under the roof panel on the up-slope and over the roof … The primary function of the curb … Specify prefabricated roof curbs and related products by a roof curb … The curb can also be mounted on a … Series 4000 – For Membrane or Rubber Roofs To put any concerns about dissimilar materials and galvanic corrosion to rest, keep in mind that galvalume is approximately 80 percent aluminum by volume, so they are highly compatible. This is particularly true on the upslope end of a curb as well as on the two sides parallel to the slope of the roof. more. Required fields are marked *. The Prefabricated HVAC Roof Curb … And in this one sentence lie the benefits and the detriments we face in the roof curb business everyday. Sales (UT): 801-773-5050 Series 1000 – For Traditional Built-Up Roofs. For insulated roof decks with a fully mitered 3” cant and step to match deck insulation thickness. A pyramidal roof is the most aerodynamic and provides the best shape in terms of having the lowest wind uplift profile. When cutting the openings for your new curb, first consider whether you are installing a concentric duct package to the curb… Curb will be flashed. Password Forgot password? The common method of dealing with large penetrations (i.e., spanning over one or more standing seams) is to install roof curbs that form the transition between the roof and the equipment being installed. Helpful Hints. more. The Adjustable Pitch Curb allows an installer to inventory less curbs… Curb will be “mopped” in as opposed to flashed. Roof curb shall be internally reinforced with angles 48" on center and factory installed A variety of special sizes are also available to provide an accessible way to install … Email. About Our Insulated Roof Curbs. Roof curbs may include a custom finish that matches the roof color. For non-insulated roof decks with a fully mitered 3” cant. A roof … Roof Curbs & Curb Adapters; Roof Curbs & Curb Adapters. Curbs shall be factory installed wood nailer fastened from inside of roof curb. Simply put, clearance means free-flowing drainage; lack of clearance can mean water buildup and leaks. SSM makes roof curbs to match.. SSM fabricates roof curbs that respond to a number of different conditions. Wood nailer and gasket where applicable. For single-ply roofing where no cant or step is required. Curbs Plus, Inc. is a manufacturer of conventional and pre-engineered metal building roof curbs, curb adapters, architectural equipment screens, diffusers and more. 888-234-7001; SIGN IN. 90° flange configuration. Vibration Isolation Rails are available in 1” and 2” deflection and are compatible with most roof-supported equipment and standard roof curb systems without modification to the curb base. This curb system is typically used when the roof top unit weight cannot be supported by purlins alone, and loads must be transferred to the main frames with I-Beams. It is not uncommon for a roofer to choose a curb type referred to an an “over/over” curb, meaning that, after the opening is cut, the curb is installed over the roofing on both the upslope and the downslope sides. Equipment rails provide the best value solution. with damper tray) 2" x 2" Nominal wood nailer; 1 1/2" rigid board (R6) insulation; … The Prefabricated HVAC Roof Curbs must be installed in accordance with instructions and as detailed on drawings. BILCO roof hatches provide safe and convenient access to roof areas by means of an interior ladder, ship stair or service stair. Standard roof curbs are manufactured of galvanized steel with continuously welded seams and mitered corners providing air and water tight construction. For standard roof curbs, you have several options and methods available to you concerning the roof opening for your ductwork. The one (1) piece roof curb units can be configured to most metal profile roof panels and can be utilized for exhaust fans, vents, skylights, HVAC units and more. Standard Features. Curb Adapter Sizing Select by Tonnage * : please select... 3-6 Ton Curb Adapter 7.5-10 Ton Curb Adapter [Add $275.00] 12 Ton Curb Adapter [Add $450.00] 15-25 Ton Curb Adapter [Add $799.00] This might be the easiest to install during construction, but it will very likely create more work and callbacks when the upslope side starts to get water into or under the joint, and leaks. Metal roofs made from galvalume-coated steel provide great corrosion resistance and can readily satisfy a 20-year weather-tightness warranty. As a general rule, the curb should be placed directly on the roof support members. Height to be 8” above finished roof deck or as detailed. HVAC curbs provide structural support for rooftop AC units and other roof-mounted equipment. Instead, a curb made from aluminum (preferred) or stainless steel should be used to prevent premature corrosion. Here again, the curb base sides extend to the next natural seam and mates to the roof panel by lapping over the rib, making the curb an integral part of the roof … Alta Products, LLC manufactures insulated roof curbs for all types of roofs – flat, sloped, and ridge style. Series 3000 – For Existing Roofs Use tack welding or other suitable fastening method to secure the roof curb in place. Prefabricated roof curbs have been in use since the roof has been utilized for something other than keeping weather out. Self-flashing with gasket. 1.05 COORDINATION A. They also serve as a location for roof penetration to allow cooled air to flow into the building and return air to … Series 2000 – For Insulated Built-Up Roofs Conn-Fab Sales, Inc.. These are currently being utilized on … No penetration of the roof required? We all know that water seeks the path of least resistance, so the key to keep water flowing down a roof is to avoid creating pockets of resistance. HVAC Roof Curbs. Below are links to all our products downloadable Roof Details and Drawings. Placing the curb on and attaching it to the ribs also allows better transitioning from under the roofing on the upslope end to cover the roof on the downslope end. Internally reinforced as needed for proper equipment support. G90 min. This type of curb has the added benefit of being able to be installed either during the roof installation of after the roof is finished. construction; 8" min. Similarly, once the water reaches the two sides, at least 6 inches of free clearance is needed (i.e., without being encumbered by standing seams or other features) to allow the water to keep going and not back up to create a water head at the upslope end of the curb. Meaning they will set level on a roof which the roof pitch increases, or decreases 1 inch in height, for every 12 inches of roof extension or run. Of course, like most aspects of building construction, there are choices available in materials, methods, techniques, and styles of installing a roof curb. Exhaust fans, HVAC equipment or other specialty devices of all kinds can be accommodated by our curbs. Instead, coordinating the curb size with the rib spacing to provide a rib-to-rib curb eliminates fasteners down both sides of the curb in the pan of the roof panels. Your email address will not be published. CDI CUSTOM CURB ADAPTERS. Equipment Supports. Standard step is 2”. Our focus is on best value, quick turn around, and making your custom curbs. Rooftop curbs are raised metal frames designed for mounting structures safely to your roof. A galvalume-coated roof doesn’t mean that a galvanized steel roof curb is the best thing to use – in fact, galvanized roof curbs are known to rust, corrode, and leak, particularly along weld joints, as soon as a year after installation. The Importance of Cleaning Metal Roof and Wall Panels, How to Avoid Common IMP Installation Mistakes, Hip Roof vs. Gable Roof: What to Consider & How to Choose, Types of Standing Seam Metal Roof Clips & Why They’re Essential. Typical applications … Filter Products ... Standard 14 ; Application . Roof Details . We create our Curbs with materials such as galvanized steel at standard … Canted Roof Curb CCP-CRC. Your email address will not be published. For R-Panel applications, we use the same design techniques as curbs for standing seam roofs; whereas, the up slope/down slope highs fit the same as our standing seam curb. ConnFab has been serving the HVAC, Sheet Metal, and Rooftop industries with custom products for over 45 years. Roof-top Curb Adapters that retro fit any new HVAC Unit to Old Curb Ductwork. The frames are used for accessories that mount above the roof and those that penetrate the … B. Stack roof curbs at site to prevent twisting, bending, or permanent deformation. Roof top mechanical equipment comes in all shapes and sizes. 18ga. Copyright (c) 2014. Economical flat flange models are also available. However, when a large penetration in the roof is needed, such as a large exhaust fan or other equipment, the integrity of the roof can be compromised if not addressed properly. If you have any questions about a product please … Pipe & Equipment rooftop support 3 ; Product Price Actions; Cambridgeport Air Systems - 2000089 Curb … When the key objective is to provide a curb that will perform for the entire life of the standing seam roof, there are four key points to keep in mind. This way, the upslope edge is much more protected and less likely to leak using the same shingled condition occurring on the downslope side – all creating a properly water-shedding, weathertight condition. HVAC Curbs that respond to your equipment needs. Sales (CT): 860-848-9266 Standard Roof Curbs. In order to achieve the necessary slope in his de-sign, he must consider the structural framing of the roof, the deck type, the roof membrane specification, roof … A curb with a minimum clearance of 12 inches between it and any other object on the upslope end will give water enough room to flow around the curb easily. Roof top unit weight will not allow thermal movement of the Standing Seam Roof System if the units were placed on standard curbs attached to the roof. Large Rooftop Equipment Curbs. Fully insulated with 1 ½” thick 3# density fiberglass. 1.877.728.3278 Home Close . Fastcurbs offers custom roof curbs, metal building roof curbs, rooftop equipment RTU curb, equipment rails, skylight curbs and custom rooftop unit adapters. Roof slopes between 4:12 and 6:12 are best for minimizing the wind uplift effects in high wind zones. Roof Curb Type Many differences exist in the specific manner in which curbs can be fabricated and installed but the basic designs fall into three categories. • Uphill base flanges install …