Roof covering is probably the most important element in a building. Builtup roof article about builtup roof by the free. Bur offers the added protection of redundant multiple layers, performs well in extremes of heat, cold, wind, and snow, is easy to repair, and has a proven track record. A typical interior roof drain assembly occupies about a 4 by 4foot 1. Typically, a built up roof will need routine maintenance and recoating every 46 years. Steel roofing systems metal roofing materials garland co. Replacing a roof rand engineering architecture, dpc. Mbbur 03 wall flashing detail for supported deck dwg doc type. A classic flat roof is either almost completely level or has a very slight pitch of 3 in 12 inches or less.
Our management team will work with you to develop a plan and construction schedule designed to minimize the impact on your business operations, or that of your tenants, during any roofing installation or repair projects. A study by ducker international in 2005 identified the average cost per year of a metal roof to be 30 centssquare foot while singleply roofs stood at 57 cents and built up roofing at 37 cents. It is made up of many layers and typically the top layer is where the tar and gravel lie. Torontos leading roofing contractors at kingkoating offers commercial roof repair, construction and replacement services.
Bur systems generally are composed of alternating layers of bitumen and reinforcing fabrics that create a finished membrane. In this 5 part series we will cover each of the following. Each material has its own advantages and disadvantages and any of them can be the right choice depending on your building, climate, and budget. Builtup roofing application guide two section 22 rs4927 214 replaces 11 asphaltapplied and cold application builtup roofing application guide 3. Sometimes a base sheet, used as the bottom most ply, is mechanically fastened. Roof surfacings on flood coat and aggregate roof surfacing, hot bitumen is poured onto the roof membrane at a rate of approximately 0. There are a few other benefits of builtup roofing systems. Bur is preferred for lowslope, or flat, roofs because it creates a continuous sealed surface. Built up roof material can consist of bitumensaturated felt, coated felt, polyester felt or other fabrics. Bur roofing systems are composed of three elements.
A typical builtup roof configuration consists of four layers of asphalt and three layers of felt. Although builtup roofs are durable, leaks can develop. Built up roofs should be checked at least once a year for developing issues. Built up roofs have solved the low pitch roof problem for ages, a challenge that asphalt shingles could never handle. Some flat roofs have hot tar builtup roofing, which may have a gravel surface. The application of the asphalt primer is important because older built up roof systems may be brittle or lack the oils present in a newer roof system. You can fix a rubber roof yourself by using this rubber roof repair kit. Corps of engineers commentary on roofing systems, some general criteria for system selection, and aspects of protected membrane and vegetated roof systems. Flat roofs, or lowslope roofs, are also commonly found on commercial. Flat roofing in toronto king koating commercial roofing contractor. Builtup roofing is one of the oldest and most reliable ways of installing a new roof.
Builtup roofing types, advantages, and applications. Count on iko for the best in builtup roofing systems. The gable roof is one of the most popular roof designs due to its attractive symmetrical shape, efficiency at shedding water, and option for attic space. Mbbur 02 tapered edge flashing detail pdf doc type.
Proper flashing design is the responsibility of the roof designer. The asphalt provides the waterproofing capabilities while the felt reinforces the asphalt. The slight selvage of a few inches, if broken or unsealed, leaves open the possibility for huge leaking problems. Epdm, thermoplastic, builtup, modified bitumen, and metal. Mbbur 02 tapered edge flashing detail dwg doc type. Builtup roofing, also called bur, is the most common roofing material used on lowslope roofs. Any additional insulation and details will increase your total labor charges. If you have any questions about a product please dont hesitate to call us, we will help you get your roofing job done right the first time. This type of elastomeric roof coating is the best for flat roof repair, lowsloping roofs i. Lowrise residential construction steel framing alliance.
Kings roofing is an union contractor affiliated with allied roofers and. Builtup roofing if properly installed and maintained, a commercial builtup roof can last 40 years. Download cad, specs, 3d, bim and green product information. With increased interest in sustainability and green buildings, its. These roof systems are commonly referred to as tar and gravel roofs. Cold applied built up roofing systems burmastic built up roofing systems when you need the durability and exceptional waterproofing capability of a multiply builtup roof but using a system with hot materials is not the right choice, tremco roofings burmastic cold applied builtup roof system is the way to go.
The typical surface for builtup roof systems consists of gravel with a heavy application of asphalt or cold tar. The number of plies in a cross section is the number of plies on a roof. It must protect the structure itself and provide for the comfort of the building occupants or the protection of valuable property, while exposed to a. The builtup roof is generally a flat roof, or a low pitched roof, which is made of a number of levels. Builtup roof material can consist of bitumensaturated felt, coated felt, polyester felt or other fabrics. Engineered modified bitumen roofing membranes originated in europe in the mid 1960s and have been used successfully in the united states and canada since approximately 1975.
Builtup roofing has been used for more than 100 years and is extremely durable. With increased interest in sustainability and green buildings, its only fair to look at the issues and see where bur stands. Part 1 in this revit tutorial, we will take a look at the roof by footprint and roof by extrusion options for creating roofs. Built up roof bur and modified bitumen mod bit membranes, available in smooth surface and granulated mineral surfaces, are typical asphalt roof membranes. No turned up corners or any indication that the patch is failing. By applying a primer to the surface of the roof, the patch can then bind itself to the roof surface, increasing the longterm performance of the patch. They may also develop where wind has blown the gravel away and exposed the surface to sun, heat, and cold. Before fixing the membrane in place, it needs time to relax as epdm. Builtup roofing system hot mop roofing system multi. Built up roofing systems, also known as bur, are considered one of oldest and most reliable roofing systems for commercial properties that have a low sloping or flat structure. A vertical wall assembly capable of resisting lateral. Flat roofs are an ancient form mostly used in arid climates and allow the roof space to be used as a living space or a living roof. Flashing problems account for the majority of roof leaks on lowslope builtup roof systems. It is composed of alternating layers of reinforcing fabric and bitumen asphalt and is finished with a top layer of aggregate, such as stone or gravel.
A gravel and tar builtup roof is exactly that layers of gravel and asphalt laminated felt on top of a flat roof. If you live in an arid region or an older urban area, you may have a large flat roof. It must protect the structure itself and provide for the comfort of the building occupants or the protection of valuable property, while exposed to a wide variety of climatic conditions. Its used regularly on flat roofs and has firmly established itself as old reliable in. This outstanding combination of hightensile strength felt and waterresistant asphalt. A typical built up roof configuration consists of four layers of asphalt and three layers of felt. These are most often found where flashing is located, such as at connections between the roof and the chimney, the eaves, or another roof plane. Built up roofs are installed using several layers of a special type of roofing felt that has been asphalt impregnated and embedded in bitumen. Dec 08, 2019 although built up roofs are durable, leaks can develop. Orlando fl built up roofs contractor ecobuilt roofing. Typically, a builtup roof will need routine maintenance and recoating every 46 years. Builtup roof coating systems armour proof coatings. As the roof is installed, more and more layers are added to increase durability and longevity, hence the name builtup.
It may be covered with a granular roll roofing, epdm which is smooth surfaced, or modified bitumen which may be smooth or mineral surfaced. Encyclopedia article about built up roof by the free dictionary. When you choose not to remove the existing flat roof, apply the poleforce builtup roof system. A surfacing is generally applied and can be asphalt, aggregate gravel or slag, emulsion or a granulesurfaced cap sheet. Iko builtup roofing bur systems are composed of layers of roofing asphalt and asphalt felts which are installed so that the multiple interwoven plies form a roofing membrane. As these roofs age, weathering can shorten the life expectancy of the roof system. Below are links to all our products downloadable roof details and drawings. Encyclopedia article about builtup roof by the free dictionary. The gravel and tar builtup roof is the one most commonly known. The term four plies denotes a fourply roof membrane construction. Going back about 120 years, the grandfather of flat roofs is the builtup roof or bur. In recent years, national roofing contractor association nrca data would suggest that fiberglass reinforced builtup roofing systems have been. Builtup roofs have solved the low pitch roof problem for ages, a challenge that asphalt shingles could never handle builtup roofs are installed using several layers of a special type of roofing felt that has been asphalt impregnated and embedded in bitumen applied with a hot mop. This detail is of extreme importance in colder climates like the north and midwest where this type of split is more prevalent.
Builtup roofing asphaltic primers, sealants, and cement. Traditionally, domestic flat roofs use two or more built up layers of bituminous felt. The isometric roof drain detail shown here is known as an interior drain detail because it always is used within the field of a builtup roof bur system and drainage is directed to the interior of the roof area. Modified bitumen mb roofing is an asphaltbased, close cousin of the builtuproof bur designed for buildings with lowslope or flat roof structures. A builtup roof in orlando, florida that features a reflective coating can be considered a cool roof. At garland, we offer metal roofing materials and steel roofing systems. The slate and tile roof support system is an advanced insulated roof panel system designed to support either slates or tiles. Dec 15, 20 repairing a flat roof in san jose california.
Ive put three patches on the rubber roof on my building in the last 6 months and they still look like the day i patched. When a final energy star coating is properly installed on a builtup roof, average summertime temperatures can drop by 60100 degrees. Built up roof membranes, referred to by the acronym bur, have been in use in the u. Count on iko for the best in built up roofing systems. In an industry where innovation is king and roofing materials come and go, built up. Building a gabled roof requires basic carpentry tools and skills, but as long as you make precise cuts and measurements, youll be able to make a roof for any simple structure. Builtup roofs should be checked at least once a year for developing issues. This is a system that has been around and in demand for ages. With no kettles or disagreeable odor, the burmastic system is ideal for restoration projects on buildings that must remain occupied during a roofing. Asphaltapplied and cold application builtup roofing. Cover the bare area with hot bitumen poured at a rate of 70 pounds per square, and embed fresh gravel or slag.
The granddaddy of membrane roofing is builtup bituminous roofing bur. A builtup roof is a multilayer, lowslope roof consisting of a base deck of metal, plywood or concrete, followed by a layer of rigid roof insulation, and covered with alternating layers of roo. Our highly reliable waterproof membrane is fieldfabricated with layers of bitumen. We pioneered builtup roofing systems in america more than 160 years ago.
When the bituminous coating on a mineralsurfaced built up roof is exposed, as shown in figure 710, brush loose gravel or slag from the bare area. A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. When the bituminous coating on a mineralsurfaced builtup roof is exposed, as shown in figure 710, brush loose gravel or slag from the bare area. Flashing design for builtup roofs roofing contractor. Built up roofing is one of the oldest and most reliable ways of installing a new roof. Going back about 120 years, the grandfather of flat roofs is the built up roof or bur. Builtup roofing systems, also known as bur, are considered one of oldest and most reliable roofing systems for commercial properties that have a low sloping or flat structure. Burmastic built up roofs are available in multiple configurations, each offering such features as the extra strength, redundant protection and longterm performance of a multiply system. Iko built up roofing bur systems are composed of layers of roofing asphalt and asphalt felts which are installed so that the multiple interwoven plies form a roofing membrane.
The poleforce reinforcing roof fabric is more conformable than the polescrim or polebase so it works well on irregular existing surfaces. Builtup roof bur and modified bitumen mod bit membranes, available in smooth surface and granulated mineral surfaces, are typical asphalt roof membranes. A built up roof, most of the time referred to as bur, is a timetested roofing system typically comprised of hot tar and gravel. Timber boarding planking this should be tongued and grooved, and preservative. Feb 12, 20 part 1 in this revit tutorial, we will take a look at the roof by footprint and roof by extrusion options for creating roofs. Epdm, thermoplastic, built up, modified bitumen, and metal. There are 4 main types of elastomeric roof coatings namely. The complete guide to epdm roofing roofing superstore blog. We were too remove the existing roofing systems down to the existing decking and install a. Very convenient that all you need to do the job is in o e box.
A builtup roof, most of the time referred to as bur, is a timetested roofing system typically comprised of hot tar and gravel. Certain burmastic plies and adhesives even contain recycled content, making our. Seamless and waterproof the continuous solid surface does not require joints or seams, removing the most vulnerable area for leaking. The modified bitumen is a cap sheet for a built up roof that is used in lieu of gravel, although it works well by itself on a sloped roof with positive drainage or no standing water. Benassi, aia as a building owner or manager, you are wel i aware of the reasons for main taining a watertight roof on your struc ture. We will also make sure that we attach the walls to each roof type. There are several types of industrial and commercial roofing materials. The second stage focuses on details and edges, using a much stronger. To protect the roof from damaging ultraviolet rays, which cause it to dry, shrink, and eventually crack, the roof surfacing is usually treated in several ways. Some flat roofs have hot tar built up roofing, which may have a gravel surface.
677 737 718 552 713 1081 1533 49 1493 150 1442 1144 1070 358 1409 1317 1339 555 16 919 1233 1134 462 1284 1123 285 662 711 497 610 1248 716