In some cases, a homeowner may choose an option such as a Self-Adhering Membrane Residential Roof System, which offers the multi-layer protection of a membrane roof, with the traditional granule look of a shingled or built-up roof. It is incumbent upon the owner of a flat roof to regularly inspect and maintain the roof. The type that is right for your flat roof insulation job depends upon the state of the roof, expert opinion on the best type, and your budget. Installing foil-backed blanket insulation is also a great idea if you are building a flat roof or cathedral ceiling. To ensure we feature the products available in your area, please select your country and state/province. It is produced as a foam and is unique in that its R-value further increases as it thickens. This will make a significant difference in maintaining its integrity and longevity. Euroroof Mastergold Flat Roof Membrane If the flashing material is cracked or rusty, you will want to have it repaired as soon as possible. Generally, roofers discourage this method for cold climates because it can promote condensation and requires ventilating the roof, which may be difficult to do in small or tight spaces. Insulation is placed over and … However, due to manufacturing variances, the limitations of your monitor resolution and the variation in natural exterior lighting, actual colors may vary from the images you see. We recommend consulting a roofing professional who is fully versed in rooftop safety techniques and precautions. Wood Fiber. With a wealth of experience in the Industrial sector as well as the domestic Insulation markets. Keep in mind, all flat roofs have a slope of between five and 15 degrees to allow water to flow into drain systems (such as eaves, drainage holes or outlets). Of course, flat roofs are not flat but have a very slight roof pitch of between 1/4" to 1/2" per foot. The polystyrene is heated and then exposed to the atmosphere. In years gone by there were only two or three roof insulation types on the market. In this post, Roof Masters discusses the three most common insulation types for flat roofs. This multi-layer roof design is a proven system that has been around for generations. However, one sometimes chooses to install the insulation on the outside; this is called a ‘sarking’ system. Both a flat and a pitched roof can be provided with insulation in both ways. There are two main types:1. To help see where any water might be collecting, clean any debris from the flat roof surface, including sweeping or gathering fallen leaves or branches and clearing any loose debris or gravel that may block drainage holes. The simplest and cheapest roof insulation is the classic cold loft option. Hail can create a great deal of damage to the roof surface. HardRock and RoofRock 30 insulation. From there, the flat roof system you choose will determine the materials you apply. A basic inspection is suggested twice a year and after any major rain storms. Education is the key to choosing a flat roof that fits your budget, style and geography. Because they are applied in a single layer on often expansive roofs, they come in large rolls which may require the use of heavy equipment to get the product to the rooftop. Flat roofs are a familiar sight throughout North America. This insulation expands when it is exposed to heat and boasts an R-value of 3.8. We’ll also look at the latest flat roof insulation regulations. One of the most popular types of roof insulation is fiberglass. It boasts the same thermal resistance as wood fiber and is around the same price as well. IKO manufactures products for specific areas in North America. With a flat roof, however, this becomes a major concern. Single Ply membranes come in a variety of mil thicknesses, including 45, 60, 80 and 90 mils. Insulation can either be put below the weather proof membrane, which is called a ‘warm roof deck construction’, or above the waterproof membrane, which is called an ‘inverted warm deck’. Pros: They take less time to apply and although they can be somewhat more expensive, they remain within 10% to 20% of the cost of other methods. Is it more expensive that a steeper pitched alternative? To produce a hot roof, rigid insulation is fitted outside, above the weatherproofing. Consider geography, budget and use for the roof to determine the best option. On top of that, it can also extend the service life of the flat roof, thanks to its high R-value and efficient insulating properties. Roof Insulation has been the Insulation Industry since 1990. It has the advantage of multiple layers, but needs fewer layers than built up roofing and is less messy to apply. Spray foam insulation (sprayed directly onto the roof deck and then coated with acrylic or urethane coating, as well as a layer of crushed stones/sand.2. The roof can be insulated by using roof insulation materials such as rigid insulation boards which you put between the rafters, or foam, loose fill. 1. There are three recognised designs of flat roof construction; warm, cold and inverted. Expanded polystyrene flat roof insulation is comprised of polystyrene that is combined with a foaming agent. Nowadays, flat roofs have the ‘warm roof’ type. Derbigum Flat Roof Membranes. Washed roofing gravel is used as heavy protection against mechanical impact and UV-attack. These offer lasting protection against snow, ice and elements – and hold up well to foot traffic on low-slope roofs. A note to consider before construction: if insulation is installed below the flat roof deck this is called a “cold” roof. Warm Roofs; the air space in the construction is fill completely with insulation. but, in fact, there are several different flat roof systems to choose from. This may make it less ideal for rainy or snowy climates. This guide explores the different types of flat roof insulation, their benefits and the installation options available. Insulation is an essential energy-saving feature for any home. (See more details here). They are typically installed on top of single ply, modified or low slope metal roofs. Powerdeck ® F A flat roof insulation board for use in built-up felt and single ply membrane waterproofing systems. This insulation is placed between organic and non-organic felt. Flat roofs are an attractive aesthetic choice that give homes a unique form. At the most basic level, a flat roof consists of three basic components: Depending on the materials selected, these might be combined into a single product, but all these functions should still be there. Here we’ll discuss types of flat roofing. To an untrained eye, one flat roof looks very much like another (especially from the ground level!) Since insulating a flat roof can eat up one-quarter of the total cost of the roof installation, property managers should carefully choose the best kind of insulation to meet their roofing needs. It is more expensive to have the roof insulated on the outside than on the inside. All rights reserved. This roof type is easier to install over large surfaces and is the most common choice for commercial, industrial and institutional buildings. Please refer to our Legal Notices for U.S.A. or our Legal Notices for Canada. Special permits may be required from the local building authority, but these efforts may result in an entirely new feature to enjoy on your home. Principal types of roof systems Compact Roof with limited accessibility Page 10 Compact Roof with heavy protection The Compact Roof with limited access subject to foot traffic is a flat roof, which is only accessed for maintenance. In this post, we cover a few roof insulation types. Pitched roof – there are two options: warm or cold loft insulation. And then the roofing, with its … R values. The following outlines ways to build, protect and reinforce your roof. As few points of sealing as possible will reduce potential for leakage. Solutions For Flat Roof Insulation To provide flexibility in design, cost and usage of membrane roofing system, ROCKWOOL roofing boards offer three different types of roofing insulation system to allow owners, designers and installers to achieve the desired performances of an ideal roof. Regardless of the type of roof selected, with an experienced contractor and a solid understanding of materials and maintenance, you’ll be well on your way to constructing a protective, lasting feature for your home. As a result, selecting … Roof Insulation Types Read More » For use as a thermal insulation board in warm roof assemblies, as an integral part of mechanically fixed, thermo or self-adhered Euroroof waterproofing systems. In the case of a flat roof, insulation is usually in the form of either a rigid board above the deck, or a fibrous quilt immediately above the ceiling, depending on the type of roof construction. Copyright © 2021 Roof Masters. I aim to give readers the information to make the correct choice in selecting roof insulation. Repaired using soldering (for aluminum, use fiberglass patches or aluminized caulking). The type of insulation makes a substantial difference when it comes to energy-savings, water intrusions and its accompanying roof rotting. Do you have a flat or pitched roof? All rights reserved. Flat Roof Insulation. They’re peel-and-stick cold application, and availability in single, double or triple layer reinforcement make them a popular choice for roofs with at least 1:12 slope. This is a kind of glass made from volcanic ashes that have been pressed and refined, and combined with organic fibers and binders into a board. Many millions of square meters of flat roof are not yet green – this means wasting an enormous potential of living space. Some observers suggest it’s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers (especially on older flat roofs). Consider geography, budget and use for the roof to determine the best option. Insulating a flat roof can lead to lower energy use, a reduction in condensation and a decrease in associated household bills. How it insulates the flat roof is unique compared to other insulation. Once they are in place you can then plasterboard over them and decorate to create the desired living space. 1. This website uses cookies to provide necessary functionality and to improve your online experience. In this post, Roof Masters discusses the three most common insulation types for flat roofs. Most roofers agree that this insulation isn’t always best for all situations. Filed Under: Roofing Tagged With: flat roofs, roof types, wood fiber, Excellent! Check for any damage, puncturing, rips or wrinkling of the membranes. Any typical mall, warehouse, apartment building or school usually features a flat roof. As Roof Insulation Installers and Distributors we based in the Western Cape as well as Johannesburg, Pretoria, and … Other insulation materials include foam, wool, and even insulated glass for windows. Wall Insulation. BUR is found in many low slope residential and commercial roofing applications. Let’s take a look at how the most common types of flat roof insulations rank according to R-value. Often called Liquid Roofing, this technology is gaining ground in North America as it becomes more familiar to the industry. This could mean flat roofs may not raise the same red flags they used to among prospective homeowners who may want to replace or remodel the roof once they move in. As your local roofing company, Roof Masters will help you pick the best one for your home. NOTE: Not all products featured will be available in your area. Metal is an expensive, but stylish option because it is straightforward, unique and non-chemical. Extruded polystyrene flat roof insulation has a R-value of 5.0 and is created in several steps. A note to consider before construction: if insulation is installed below the flat roof deck this is called a “cold” roof. The information on this website is subject to change without notice. Responsive, professional, and outstanding work!Millersville, MD. This might be difficult to see if a layer of chipped material or. This situation is suited for cold weather climates. Professional Professional Tools & Support, A Design & Materials Guide for Residential Flat Roofing Systems, Self-Adhering Membrane Residential Roof System, Inspect the integrity of the top layer of protection, Alternating layers of roofing felt (usually fiberglass) and hot-applied asphalt, The final layer of asphalt is topped with gravel or other chipped minerals for several reasons: to protect the asphalt from the sun’s ultraviolet rays, fire proof the material and add weight to secure the roof membrane, Redundant (if one layer fails there are more layers underneath to provide immediate protection), Top layer of light gravel gives an appealing look and reflects the sun, Heavy, adds weight to the structure, which must be accommodated, Difficult to detect and repair leaks due to multiple layers of material, A layer of roof felt is laid down and hot asphalt is mopped overtop – repeat for two to four layers (called plies), Repair involves reapplication of original materials and/or roofing cement to fix cracks or leaks, A flexible synthetic rubber that can be resistant to the sun’s rays (white EPDM) and weathers well against the elements, Popular and trusted in the commercial market (40% of roofing systems are made with this material), As with all single- ply flat roof membranes, this roofing material doesn’t have the security of extra layers like BUR systems, so extra caution must be paid that the material isn’t punctured or damaged during installation or repair, There can be some vulnerability where the seams are cemented/taped together, This is installed by taping or cementing its seams, It’s secured either mechanically, with adhesive, or using a ballast material (such as paving stones, gravel or green roof vegetation), Considered environmentally friendly because it doesn’t contain chlorine, Long-lasting, sturdy and penetration proof, Because TPO is a newer product, it hasn’t been time-tested over many decades, Be sure the contractor you hire has sufficient experience with this material, Sometimes available in peel and stick for easy application; otherwise installed with fasteners and a heat gun, Waterproofing bitumen is strengthened with polymers (such as atactic polypropylene or styrene butadiene styrene) to add durability and is layered on top of sheets of fiberglass or polyester mats, Highly puncture- resistant and long lasting, Comes in smaller-sized rolls than single-ply membranes, making it more manageable to install, More labor- intensive than single-ply membrane systems because it requires extra layers, Generally heated by a roofer’s torch to adhere to the roof and seal the seams; may also be applied with cold adhesive, Newer types are available in “peel and stick” variety, Waterproofing material made of bitumen and reinforced with glass fibers, Liquid creates one monolithic, smooth and effective watertight membrane (no seam adhesion required), Highly resistant to sun’s UV rays and heat, May require finding a specialized contractor experienced with its application, A first layer of liquid cold-poured on top of insulation, with a second layer applied on top of reinforcing asphalt or felt, A sun-reflective protective coating made of silicone, acrylic or aluminum, Creates an effective weatherproof, fire-resistant and UV-reflective barrier, Because it’s sprayed on, creates a seamless layer, May require searching for specialized contractor who is experienced with its application, Large panels of standing seam steel, aluminum, zinc or copper, Acts as both waterproofing and sun/fire protection for the roof (no top layer required), Made of recycled materials (which can again be recycled after use). These are just three of the many insulation types available for flat roofs. Hot roof . In normal circumstances, wait until 48 hours after a rainfall to clean and inspect the roof. FlatRoof Lite Whether choosing a roof design for a new home, or replacing/repairing a current flat roof, IKO Industries offers much of the information needed to make informed decisions for a lasting, sturdy cover for your investment. Cold Roofs. Insulation rolls are the commonly used form for roof insulation as they are most suited to installing large area. There are also a variety of types of insulation available for flat roofs including PIR, tapered insulation, vacuum insulated panels and XPS insulation. Inverted warm deck roof The insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering. Flat roofs are a cost-effective option for homes – thanks to generations of use in commercial flat roof construction, modern materials and application techniques – as viable, protective and long-lasting alternatives to pitched roof counterparts. This is an organic alternative and is made from pure organic wood fibers that are made into wood boards through fillers and binding materials. This offers the option to add a unique application such as a rooftop patio, garden or green roof. Flat roofs are a common roofing choice for contemporary and modern homes. A new form of blown fiberglass mixes two types of glass that naturally curl. The highest R-value per inch is the best, and this helps determine flat roof insulation thickness for building regulations. Explore the following guide to answer many of your flat roof-related questions: Also known as low slope roofs, flat roofs are less common in North American residential construction because the low slope of a flat roof has an increased tendency to collect water rather than shed, like its more steeply pitched alternative. Warm vs. © 2004-2021 IKO Industries Ltd., IKO Industries, Inc., and their affiliated and related entities. Cold Flat Roofing: Insulation is placed in-between the joists underneath the roof surface above. Insulating a flat roof with Recticel Powerdeck U Recticel’s Powerdeck U offers 0.024 u-value for thicknesses 120mm or more so it’s a great thermal insulator as well as a strong and stable board for structural integrity. The type of insulation you should choose will depend on the type of roof you have. In case of a pitched roof, the insulation is traditionally installed on the inside of the roof. In the last 30 to 40 years, these membranes have gained popularity as a single-layer, watertight alternative to traditional built-up flat roofs. If the top layer of gravel needs to be replaced or replenished, consult a roofing professional for proper application over the surface of the roofing material. for a 1 inch board (equivalent of 6 r value). What about ongoing maintenance? At Roofgiant, we stock warm and cold roof options for both flat and pitched roofs, providing you with everything from PIR to foil insulation to rafter roll and many other forms of insulation designed for your loft or attic space. This is then covered with a further weatherproofing layer. 2: Comparison of non-insulated and inverted roof designs. Here are a few of the most common insulation solutions available: Loose Insulation – fiberglass or recycled fiber materials. We are local roofers in Rockville, MD. Start by rolling out the insulation from the outer corner to middle of the roof and manhole access. Such an insulating solution involves applying several layers of PUR foam, with each layer around 1–2 cm thick. Perlite traps air bubbles inside it, and these are what create the insulation for the roof. While many homeowners are aware of their unique pitch and drainage needs, few know that flat roofs have different insulation needs, too. From there, the flat roof system you choose will determine the materials you apply. So, even though flat roofs are ideal for drier landscapes, in climates with heavy precipitation, a properly installed flat roof can be a fine choice for a homeowner – especially thanks to ever-improving waterproof materials and installation techniques. While they’re easier to install, especially over large surfaces, flat roofs do have their quirks. Pitched roof. This roof layout is regu - If it hasn’t, that’s a sign of a problem with roof drain parts or the drainage system. You can expect to pay about $55/100 sq.ft. Is it harder to install? This flat roofing material is popular because it uses trusted weatherproofing materials (asphalt) reinforced with polymers. Pay careful attention to the roof at the construction phase and throughout its lifecycle to help prevent these problems in the first place. Proponents like this product because it’s easy to apply and provides smooth, effective coverage. Fiberglass comes either as sheets that can be applied to the roof from the inside, or as loose fibers, mixed with adhesive, that are blown into place. If you love the landscape or cityscape around your home, a flat roof can help complement that without obscuring the view. Kingspan and Recticel are the two of the most well-known flat roof insulation brands and they’re firm favourites of Insulation Superstore customers. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. This is why most flat roofs use large squares or single sheets of materials. Many of the potential problems a flat roof may attract – such as water pooling, leakage and resulting rot or damage – are due to poor installation or poor maintenance. Cold roof – a very bad idea! According to the Energy Saving Trust, a quarter of heat is lost through the roof in an uninsulated home. It’s not a good choice if you live in a humid or rain-prone area as the insulation can easily be damaged by a leak. Inspect flashings around the chimney and skylights. There are different ceiling insulation products available in South Africa. With an R-value of 6.0, this is the best insulation for flat roofs. Understanding relative R-values will help rank the comparison of various materials choices. Insulation rolls can also be used as a top up layer in roof area. It is top quality and the most cost effective product for your flat roof. Foam is a popular type of roof insulation. Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation. While expensive, the best insulation is PolyISO rigid foam. Roofing experts discourage the use of shingles on a flat roof. IKO assumes no responsibility for errors that may appear on this website. Saint-Gobain Insulation UK manufacture and supply glass mineral wool slabs and rolls along with rigid Polyisocyanurate (PIR) boards that can be considered suitable for a wide range of applications across flat roofs whether you’re looking to insulate at joist level or above the roof deck in your flat roof … Or supplementing existing insulation per inch is the best insulation for flat roofs, roof Masters the. It ’ s long-term Energy consumption most common insulation solutions available: Loose insulation – fiberglass or recycled fiber.... 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