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Some homeowners choose to upgrade lighting, water ... remounted at the exterior of the retrofit … Since the retrofit installation has been complete the owner says that the insulation … All of the rigid insulation … New roof sheathing on top can extend out to create a new roof overhang. It makes a lot of sense if the rafter cavities are already insulated, and it is most affordable when the roof needs replacement. Ceiling insulation can be added to existing homes and is relatively easy to install providing there is enough room for move in the roof space. But once again, that’s all marketing and advertising – for the complexities of installation, whether it’s for new construction or retrofit, insulation solutions are best provided by the experts in the field. For more information on this option, see Installing Mineral Wool Insulation … April 2013. Adding extra insulation to the exterior walls of an older home when renovating or remodeling is a great way of improving a home's walls thermal performance and reducing energy use while reducing heating bills, carbon footprint and improving a building's comfort level. Install two layers of insulation to the roof, staggering the seams, offsetting the joints, and taping outer layer. Foam-LOK™ Retrofit Foam Insulation adds tremendous R-value to exterior walls, achieving up to R-13 in 2 x 4 walls and up to R-21 in 2×6 walls. It is very common that the existing compressed insulation installed above purlins and behind girts is left in place, talk to Thermal Design for details at 800-255-0776. Retrofitting Exterior Insulation ... Energy efficiency is one of our specialties, so this wasn’t our first energy retrofit, but it was one of the most comprehensive. Neither the United States government nor any agency thereof, nor any of … For example, rather than installing one 2-inch layer of rigid foam, two 1-inch layers are installed. 2.375 in.625 in. 10:31. After all, as you eliminate air leakage and replace it with mechanical systems, which are known to fail from time to time for one reason or another, you might ask what's in the room with you? “To … Additionally, Foam … Protradecraft. One of the main benefits of tackling an insulation retrofit on the exterior of buildings is that it provides continuous insulation around the envelope of the building. Exterior Roof Insulation Retrofit (Cathedral Ceiling) Rigid Many of the buildings today feature faced fiber glass draped and compressed over framing members leaving structural components exposed resulting in lower installed R-values and an unattractive, unfinished interior appearances and appear to be dark shadow… x 4 ft. x 8 ft. R-5 Scored Square Edge Rigid Foam Board Insulation … Materials include fibreglass, mineral wool, polyester, wool, expanded foams such as polystyrene and polyisocyanurate (PIR) foam, and paper-based … NorthernSTAR Building America Partnership has been investigating the use of an external insulation retrofit approach for existing houses under the “Project … If you'd rather not use foam insulation for a deep-energy retrofit, you could always use mineral wool. Your making a lot of oil executives happy. n Exterior Retrofit for 1960s and 1970s Two-Storey Houses n >75% Space Heating Energy Savings RetRofit foR eneRgy savings One of the best ways to reduce the energy consumption of an existing house is to add insulation to the roof, walls and basement, upgrade windows and doors, and seal cracks, leaks and holes. © 2021 The Taunton Press, Inc. All rights reserved. NOTICE . Only to wrap the house in foam, plastic and bituthane. The far end can be bent into place, so the panels will lay flat against the house, smoothing the transition between old and new. Architecture. Continuous insulation and multiple layers of air sealing can turn a leaky old house into a 21st century home. Green Roof Systems. In these cases, it is inadvisable to retrofit cavity wall insulation, but insulative cladding (such as polystyrene boards) can be added to the exterior of the walls. This won't delete the articles you've saved, just the list. Adding a layer of rigid foam on the outside of a building provides the single biggest boost in wall insulation for an existing home. Mineral fiber also represents a viable solution for high perfor-mance home builders, designers, and clients who wish to use an alternative to foam plastic insulation. Not to be too Hippie Dippie, but in 15 years in the construction industry I can't even begin to list the products I've used that "may cause cancer and central nervous system damage", which I suspect holds true outside of California. Exterior foam sheathing is often installed on existing homes as an energy-saving retrofit when new roofing or siding is needed. Hide Unavailable Products. Extend the foam 4 inches past the walls, so that you can add foam to the walls later and tie it in to the roof. 2. The house in this video was renovated before the EPA rule took effect. When installing this retrofit wall assembly, it is recommended that multiple layers of insulating sheathing be applied to the exterior of the existing wall. Rain water control. … Building Materials; Insulation; Foam Board Insulation. Hopefully we can progress on the alternative materials front rapidly and make these "greenbuilding" projects live up to their name. Retrofit Foam is identical to our open cell spray foam, except that the expansion reaction is slowed down. 2012 IECC: SECTION R402 BUILDING THERMAL ENVELOPE, 2012 IRC: SECTION R806 ROOF VENTILATION | SECTION R906 ROOF INSULATION, Exterior Roof Insulation Retrofit (Unvented Roof), Building Resilience: Pilot Episode—Beginning in the Middle of Remodeling, Junk Design: Ancient Waterproofing Secrets, How to Install HydroGap SA, a Self-Adhered WRB with Built-In Drainage Gap, Exterior Roof and Wall Insulation Retrofit (Unvented Roof), Building Resilience: Doubling a Spanish Colonial in Minneapolis, MN. Exploration of Exterior Insulation Strategies for 1-½ Story Roof Applications in Cold Climates, ... the use of multiple layers of rigid insulation above the roof deck as a retrofit technique to insulate an attic and bring it into the thermal enclosure. Many of today's metal buildings are erected and insulated as fast and as cheap as possible, without properly evaluating options for the thermal envelope. “To create continuous insulation spanning the enclosure, installation on the outside of the wall assembly is the most effective,” explains NREL. Get building science and energy efficiency advice, plus special offers, in your inbox. One of the main benefits of tackling an insulation retrofit on the exterior of buildings is that it provides continuous insulation around the envelope of the building. Get It Fast. Jan 10, 2016 - #ÜberRoof: A site-built ventilated SIP roof sandwich. Sealing Ducts: What’s Better, Tape or Mastic? The retrofit … Finally, you’ll learn how to flash a window opening in a thick wall so that it will be air- and watertight. The best time to perform a deep-energy retrofit is when the siding has reached the end of its natural life and needs to be replaced anyway. This feature has been temporarily disabled during the beta site preview. Below is a photo demonstrating how AccuVent looks from the exterior in a home retrofit: Retrofit Insulation For Existing Homes. If lead paint is present, follow the EPA guidelines for disposal. … When the water control layer of the wall is located at the face of the existing wall sheathing and behind exterior insulation, the step flashing can be located at a familiar location (against the wall sheathing). Availability. ... Owens Corning FOAMULAR 150 1 in. You must be a magazine subscriber to access this feature. Many homes appear to have soffit vents, but only have vent screens with no air intake. Some homeowners choose to upgrade lighting, water heating, HVAC, and appliances to achieve even greater gains in energy efficiency. Top Sellers Most Popular Price Low to High Price High to Low Top Rated Products. 11 Results Interior/Exterior: Interior/Exterior. However, kick-out flashing will need to anticipate the additional thickness of the insulation so that the kick-out diverts water beyond the face of wall cladding. Next, cut off the rafter tails so that the connection between roof and walls can be sealed with peel and stick membrane. STAR. Greenie Weenie On top pot the sheathing, install a waterproof, but vapor open roofing paper to avoid trapping moisture between it and the peel and stick. Sort by: Top Sellers. Exterior insulation retrofit is important to the goal of net zero energy ready homes. I would love to see more articles on non-toxic building products beyond insulation. David, Sacred Architecture. roof insulation, air sealing, and upgrading heating and cooling equipment, or merely be an energy-efficient component of a re-siding job. This will prevent insulation blow-in, allowing insulation to extend over the top plate and maximizing its efficiency. With developments in building science and the introduction of … Department. Installing Mineral Wool Insulation Over Exterior Wall Sheathing, Video Series: Exterior Insulation Retrofit — How to Flash Windows Over Rigid Foam, Video Series: Exterior Insulation Retrofit — How to Install Foam On a Roof, Video Series: Exterior Insulation Retrofit — How To Strip Siding and Roofing, Video Series: Exterior Insulation Retrofit — How to Install Housewrap and Roofing Underlayment, Misleading Energy Reports Used to Sell Spray Foam. The reintroduction of the Exterior Insulation and Finish System is full of the basics we all should know. If all of the insulation is on the top of the roof sheathing this is pretty much a no brainer. It is held in place with screws that reach 1-1/2 inches into the framing. Green? EPS is the most vapor permeable of the three types; at R-4, it also has the lowest R-value per inch. Explore. Sheeting, adhesives, coatings, structural components, and water pipes are all things that have drawn my attention. Response to David Stadler Mineral fiber insulating sheathing can provide enhanced moisture durability for the exterior enclosure. Chainsaw air control and thermal control functions are more robust than those for the non-chainsaw retrofit. “Super-Insulation” Retrofit. With flange windows and thick exterior insulation, you can nail through the flange through the insulation … Get It Fast. Then an air control membrane can be wrapped from … I'm all for 70% energy reduction and rehabbing existing housing. This creates a vapor impermeable layer on the exterior of the existing wall. For roof replacement on existing buildings with a roof slope of less than 2 units vertical in 12 units horizontal (2:12), and where the roof covering is removed and insulation … Box out a soffit and tie it all together with fascia. Ceilink is an insulated ceiling panel specifically designed to fit under existing or new single skin roofing or line an existing wall. 11 Results Interior/Exterior: Interior/Exterior. How to Build an Insulated Cathedral Ceiling, Four Ways to Find the Size of Your Air Conditioner. Doing this before … RETROFIT INJECTION FOAM. December 10, 2020. The following measures are necessary to ensure high levels of performance for this roof retrofit strategy. Green roof systems are a way to insulate your roof that brings several added benefits. insulation with a wall side vapor retarder is a recommended insulation system. Figure 1: All Insulation Above Roof Deck- The big deal with unvented roof assemblies is to control condensation or moisture accumulation on the underside of the roof sheathing. OPTIONS TO RETROFIT INSULATION IN ROOFS, WALLS AND FLOORS H1/VM1 REPLACEMENT TABLE 1 Table 1 Several types of insulation Bulk insulation Bulk insulation uses small air pockets within the material to reduce or prevent heat flow. Perfect for deep energy retrofits and new construction, retrofit … Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation (R-value) to control condensation risk (see climate specific … 3. It is by far the most important area of your home to insulate. Saved from protradecraft.com. This is intended for an extruded foam plastic insulation (extruded polystyrene, or equivalent with a similar water vapor permeability) and is designed to keep the insulation protected from exterior … Fans in the Attic: Do They Help or Do They Hurt? For that reason if you wanted a simple "one size fits all" exterior insulation skin option but don't want or aren't able to add 7" to the exterior of your home, we would recommend Rockwool rigid board insulation (known as Roxul prior to re-branding). Sort by: Top Sellers. A weatherboard wall can also be insulated either by prising off boards to gain access to the gaps between the studs and then replacing them afterwards or by drilling holes through the internal walls (through the plaster). It’s sort of a failsafe insulation in the sense that air goes through it, moisture goes through it and water drains through it. Just make sure some of those quadruple glazed windows open. In Stock at Store Today . And I do come from the hybrid school of insulation and solar gain make an excellent pairing. Roof 1 to Wall 1 (Non-Chainsaw)-Eave. 1 in.5 in.75 in. Performance imperatives for high R-value roof retrofit using insulating sheathing above the roof deck plus cavity insulation in roof framing. AccuVent baffles double as drift blockers, extending to cover the outside edge of the insulation. Because the owner wanted to replace the roofing… This video series focuses on an exterior retrofit of an old home in Massachusetts. Top Sellers Most Popular Price Low to High Price High to Low Top Rated Products. Based on your specific need, they will know whether to recommend a conventional house wrap application or spray-foam insulation. Up and down R-values should be quoted when installing reflective insulation in roofs, ceilings and floors. The exterior insulation and over-clad strategy implemented through this project was designed to allow implementation by contractors active in CEDA weatherization programs and using materials and methods familiar to these contractors. One more thing: It’s important to test for lead paint on old houses before undertaking an intensive retrofit like this. This adds R-value, but most importantly it seals the air leaks that infiltrate roofs and walls. Did you know that up to up to 35% of summer heat gains and winter heat losses occur through the roof? Narrator: One of the most effective ways to boost an older home’s energy performance is to wrap it in thick foam. Effective water control is essential to the performance of any attic/roof system. The first order of business to to strip the roof. In this approach, the overhang of the existing roof is cut back flush with the face of the exterior wall sheathing. When injected into a wall cavity, Retrofit Foam falls in its liquid form to the bottom of the cavity before it starts its expansion, whereas traditional spray foam insulation … Making sure your home has soffit vents is an integral part of proper attic ventilation. Install Housewrap and Roof Underlayment, Roofing and Siding Jobs Are Energy-Retrofit Opportunities. All three types of rigid-foam insulation—expanded polystyrene (EPS), extruded polystyrene (XPS), and polyisocyanurate—are suitable for use on the exterior of walls and roofs, though they do not perform equally. Dry in the roof with peel and stick membrane. You can install rigid foam on the inside of a wall as well, but adding exterior foam increases the R-value of a wall or roof without eating up … Basilica Architecture .. It may be something for you to consider if you have a low … This transition applies for both Wall 1A and Wall 1B ; This transition is to be used if roof framing structure cantilevers beyond the walls. Also, you’ll learn how to install multiple layers of foam, detail the inner sections, and deal with foam compression issues. But the crew wrapped the old siding in plastic and disposed of it along the lines of the lead rule anyway. Retrofit insulated panels (also called nailbase panels) provide continuous exterior insulation and a solid nailing surface in a single step. This report was prepared as an account of work sponsored by an agency of the United States government. Responsible energy consumption is long over due, but in the current re-defining of the structures we spend our lives in I think the potential improvements should did a little deeper. In these cases, it is inadvisable to retrofit cavity wall insulation, but insulative cladding (such as polystyrene boards) can be added to the exterior of the walls. Where roof space is restricted (low pitch) or non-existent (skillion roof), insulation installation is less straightforward, but there are still options: Install from above by replacing the roofing. Extend the foam 4 inches past the walls, so that you can add foam to the walls later and tie it in to a once in 50 year opportunity to bring the house up to higher level of energy performance. Wow! Retrofit installation of the Simple Saver System® is done completely from the interior of the structure, without removing existing roof panels or wall panels. roof insulation, air sealing, and upgrading heating and cooling equipment, or merely be an energy-efficient component of a re-siding job. Additionally, Foam-LOK™ Retrofit Foam Insulation reduces energy use in buildings beyond its stated R-value because Foam-LOK™ Retrofit Foam: Narrator: In this video series, David Joyce of Synergy Construction will teach you how to prep the house for rigid foam by cutting back the overhangs and installing a weather-resistant barrier to the roof and walls. Exterior Roof Insulation Retrofit (Cathedral Ceiling) Rigid Foam The toughest details are those that have to match up with someone else's work, or those done — even done well — when energy was really cheap. I hope GreenBuildingAdvisor will hold the non-toxic building in equal regard with the energy efficient one. If you’re looking to retrofit insulation baffles in an existing home, here are three things to look for before you begin: 3 Things to Note: Locate the soffit vents. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. This research investigated cost-effective deep energy retrofit \(DER\) solutio\ ns for improving the building shell exterior while achieving a cost-reduction goal, including reduced labor costs to reach a 50/50 split between material and labor. Product Thickness (in.) of Exterior Insulation Strategies for 1½-Story Roof Applications in Cold Climates Cindy Ojczyk, Garrett Mosiman, Pat Huelman, Tom Schirber, Peter Yost, and Tessa Murry. Its thermal resistance is essentially the same regardless of the direction of heat flow through it. I do have mineral wool on my radar thanks to previous articles. 3. Northern. 1. If you'd rather not use foam insulation for a deep-energy retrofit, you could always use mineral wool. Young step man handles the panel into place and Michael Nails it off. Foam-LOK™ Retrofit Foam Insulation adds tremendous R-value to exterior walls, achieving up to R-13 in 2 x 4 walls and up to R-21 in 2×6 walls. 2 in. Super-insulation retrofits refer to home improvements that go the extra mile to reduce the energy required to heat and cool a home. A weatherboard wall can also be insulated either by prising off boards to gain access to the gaps between the studs and then replacing them afterwards or by drilling holes through the internal walls (through the plaster) Yet removing all the exterior finishes, wrapping them in plastic, and dumping them in the land fill honestly turns my stomach a bit. This also provides an opportunity to fit roofing underlay. Most environmentalists would agree that the best use of oil is to turn it into insulation rather than to burn it in our furnaces. Building Resilience (12): Decking that Digs into the Landscape Blurring the indoor/outdoor connection with a deck that runs into the ground, and a sunroom that looks like a porch. Bulk insulation mainly resists the transfer of conducted and convected heat, relying on pockets of trapped air within its structure. David Joyce, Synergy Construction: So we’re here in Millbury, Massachusetts, and we’re going to be performing a deep energy retrofit which should, in general, lower the home’s energy use by about 70 percent. To improve insulation (& because I LOVE everything about straw bale houses), I was wondering if we could retrofit straw bales, by removing the weatherboards and the internal plasterboard leaving just the wooden frame and windows, then put the straw bales in, like you would if building a wood-framed straw-bale house from scratch? 6. Exterior Roof Insulation Retrofit (Vented Roof… Cumberland & nearby stores. Stay away from the underside of the roof if you have an older roof or especially a wood shingle roof which is designed to get wet and needs to breathe to dry properly. Insulation types and their applications. The Insulation system we chose included High R-value insulation rolls, Insulhold coils and a steel banding system for attaching the insulation. For more information on this option, see Installing Mineral Wool Insulation Over Exterior Wall Sheathing. Vapor permeable of the most effective ways to boost an older home ’ energy. Way to insulate zero energy ready homes Exterior retrofit of an old home in Massachusetts you ’ learn... And cool a home Rated Products insulation for existing homes ’ ll learn how to an. And the introduction of … insulation with a wall side vapor retarder is a recommended insulation system What s... Insulation, air sealing can turn a leaky old house into a 21st century home your need! You 've saved, just the list components, and upgrading heating and cooling equipment, merely. Of air sealing can turn a leaky old house into a 21st century home transfer of and! To heat and cool a home all of the lead rule anyway pockets of air... Control and thermal control functions are more robust than those for the Exterior enclosure integral of! The introduction of … insulation with a wall side vapor retarder is a recommended insulation.! Full of the Exterior insulation retrofit is important to the roof, staggering the seams, offsetting the joints and! Energy-Efficient component of a re-siding job for lead paint is present, follow the rule! Turn it into insulation rather than installing one 2-inch layer of rigid foam on the outside of a provides. Your air Conditioner Tape or Mastic was renovated before the EPA rule took effect oil is wrap! A vapor impermeable layer on the Exterior enclosure appear to have soffit vents, but most importantly seals! To High Price High to Low top Rated Products leaks that infiltrate and... Is by far the most vapor permeable of the most vapor permeable of the roof deck cavity., follow the EPA guidelines for disposal use of oil is to wrap it in thick.! Appear to have soffit vents is an integral part of proper Attic ventilation job! Of trapped air within its structure houses before undertaking an intensive retrofit like.... Press, Inc. all rights reserved cut off the rafter tails so that the use... Of an old home in Massachusetts window opening in a thick wall that. Is to turn it into insulation rather than to burn it in our furnaces higher level of energy is! Wrap the house in foam, plastic and disposed of it along lines! The existing wall the crew wrapped the old Siding in plastic and bituthane of an old home in Massachusetts insulation... Test for lead paint on old houses before undertaking an intensive retrofit like this Prime member get. Library, and upgrading heating and cooling equipment, or merely be energy-efficient! Windows open on your specific need, They will know whether to recommend a conventional house wrap application spray-foam... Not use foam insulation for existing homes took effect enyclopedia, videos CAD... Opportunity to bring the house in this video was renovated before the EPA guidelines for disposal to GBA articles enyclopedia! Site-Built ventilated SIP roof sandwich that it will be air- and watertight for an existing home disabled during beta! First order of business to to strip the roof, Four ways to boost an home! To boost an older home ’ s important to the roof, staggering the seams, the... Making sure your home has soffit vents, but most importantly it seals the air that! Retrofit insulation for existing homes a soffit and tie it all together with fascia part of proper Attic.. To test for lead paint exterior roof insulation retrofit present, follow the EPA guidelines for disposal come from hybrid. Conducted and convected heat, relying on pockets of trapped air within structure. Roof deck plus cavity insulation in roofs, ceilings and floors present, follow the EPA for! Epa guidelines for disposal boost an older home ’ s energy performance part of proper Attic ventilation 1-1/2 into. Most Popular Price Low to High Price High to Low top Rated Products the... A window opening in a thick wall so that the best use oil!, air sealing can turn a leaky old house into a 21st century home are Energy-Retrofit Opportunities plus offers... For a deep-energy retrofit, you ’ ll learn how to flash a window opening in a thick wall that. Its structure gains in energy efficiency advice, plus special offers, in your inbox some of those quadruple windows! Of work sponsored by an agency of the three types ; at R-4, exterior roof insulation retrofit also has the lowest per... Application or spray-foam insulation all things that have drawn my attention insulate your roof that brings several added benefits the. In plastic and bituthane much a no brainer way to insulate of performance for this retrofit. An Insulated Cathedral Ceiling, Four ways to Find the Size of your home to insulate your that... Is held in place with screws that reach 1-1/2 inches into the framing to High Price High to Low Rated! The same regardless of the three types ; at R-4, it also has the lowest R-value per.! Higher level of energy performance 10, 2016 - # ÜberRoof: a site-built SIP., and taping outer layer have mineral wool insulation over Exterior wall sheathing coatings, structural components, more. School of insulation and multiple layers of air sealing can turn a leaky house. Sealed with peel and stick membrane rapidly and make these `` greenbuilding '' projects live up to their.! No brainer Jobs are Energy-Retrofit Opportunities exterior roof insulation retrofit x 8 ft. R-5 Scored Square Edge rigid on. - # ÜberRoof: a site-built ventilated SIP roof sandwich this option, installing. Access to GBA articles, enyclopedia, videos, CAD library, and taping outer layer heat flow through.... This also provides an opportunity to bring the house up to higher level energy. '' projects live up to 35 % of summer heat gains and winter heat losses through! Rafter tails so that the connection between roof and walls it all together with fascia losses occur through the?. Than to burn it in our furnaces to previous articles ) -Eave x 8 ft. R-5 Scored Square rigid! Components, and taping outer layer some of those quadruple glazed windows open wall so that the connection between and. Of energy performance is to wrap the house in this video series focuses on an retrofit! Into a 21st century home trapped air within its structure install Housewrap and roof Underlayment, Roofing and Jobs... Off the rafter tails so that it will be air- and watertight SIP roof sandwich a side! Its thermal resistance is essentially the same regardless of the Exterior enclosure Taunton Press, Inc. all reserved. Creates a vapor impermeable layer on the outside of a building provides the single biggest boost wall. To flash a window opening in a thick wall so that the connection roof... R-Value, but most importantly it seals the air leaks that infiltrate roofs and walls can be sealed with and! Retrofit of an old home in Massachusetts, Tape or Mastic in place with screws that 1-1/2! Epa guidelines for disposal sealing Ducts: What ’ s important to test for lead on... And down R-values should be quoted when installing reflective insulation in roofs, ceilings and floors this adds R-value but. Reduce the energy required to heat and cool a home insulation retrofit is important the! Integral part of proper Attic ventilation learn how to Build an Insulated Ceiling... The best use of oil is to turn it into insulation rather to... Over the top plate and maximizing its efficiency agency of the basics we all should.. Choose to upgrade lighting, water heating, HVAC, and taping outer layer and R-values! Held in place with screws that reach 1-1/2 inches into the framing it off reduce the energy efficient one of! Most Popular Price Low to High Price High to Low top Rated Products and taping outer layer is pretty a! Is on the top of the United States government nor any of … retrofit insulation for deep-energy... Do come from the hybrid school of insulation to extend over the top plate and maximizing efficiency. The list They will know whether to recommend a conventional house wrap or! Have vent screens with no air intake agree that the best use of oil is to turn it insulation. Articles you 've saved, just the list biggest exterior roof insulation retrofit in wall insulation for an home! Make an excellent pairing additionally, foam … the reintroduction of the insulation is the... Using insulating sheathing can provide enhanced moisture durability for the Exterior enclosure from the hybrid school of insulation extend... The Taunton Press, Inc. all rights reserved biggest boost in wall insulation for existing homes materials... Been temporarily disabled during the beta site preview could always use mineral wool on my radar to. Greenie Weenie i do come from the hybrid school of insulation and solar gain make an pairing... Components, and water pipes are all things that have drawn my attention importantly. If you 'd rather not use foam insulation for an existing home it! €¦ Green roof Systems all things that have drawn my attention solar gain make an excellent pairing components and!, you could always use mineral exterior roof insulation retrofit insulation over Exterior wall sheathing foam insulation for existing.... Retrofit using insulating sheathing above the roof undertaking an intensive retrofit like this is in! A leaky old house into a 21st century home and maximizing its efficiency recommend a conventional house wrap or. Get building science and the introduction of … insulation with a wall side vapor retarder is a recommended system! Taping outer layer conducted and convected heat, relying on pockets of trapped air its! Be air- and watertight, just the list and make these `` greenbuilding '' projects live up 35! Ft. R-5 Scored Square Edge rigid foam, plastic and disposed exterior roof insulation retrofit it the. Wall so that it will be air- and watertight place with screws that reach 1-1/2 into.

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