So I would balk at tearing it off.”. Harold Orr link problems … (Search craigslist or try the Insulation Depot in Framingham MA if there isn't a source closer- it's only 60-90 minutes from the NH beaches.). As GBA senior editor Martin Holladay points out, Buckley is in Climate Zone 5, where code requires a minimum of R-38 ceiling insulation. This past winter was the easiest to heat in the 11 years here. Caveat emptor. Thanks Martin. That having been said, I favor a product called Insul-lam in my area, Nail-Base in others, now coming to be known as "retro-fit SIPS" The product has a layer of EPS foam insulation bonded to a single layer of OSB. Is there any glue-like stuff we could use to attach 2 to 1 or even 1 to the roof decking? He intends to do the work himself. © 2021 The Taunton Press, Inc. All rights reserved. Make a grid frame work of 2" dimensional to make space for the insulation. Retrofit room in roof insulation is now established as a common energy efficiency measure in the domestic sector. Flexible formaldehyde free glass mineral wool. The panel adds a remarkable amount of structure as well as insulation to the project. I also foamed the edges touching the wooded frame. “The roofing is relatively new (5 yrs). Adding exterior foam on an old roof is a good idea whenever a reroof is planned—it is a once in 50 year opportunity to bring the house up to higher level of energy performance. 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 shadowy interiors. New cladding and underlayment is then installed over the retrofit insulated panels. You must be a magazine subscriber to access this feature. Installing a Vapor Barrier in a Sealed Crawlspace, 'Natural' Brick and Block are Beautiful Materials, Exterior Roof Insulation Retrofit (Vented Roof), Building Resilience (5): A Durable Roof That's Dried-In As Soon as It's Sheathed, Moisture Management Guide: Three Design Rules, Peel and Stick Membrane Installation Tips from a Roofer, How to Flash an Open Valley with W-Type Valley Metal, Building Resilience: Doubling a Spanish Colonial in Minneapolis, MN. Apply 2x4s on the flat over each rafter and fasten with 6 inch screws. TopHat135 cellulose roof insulation is an odourless, non-toxic substance that will keep your home or office cool in summer and warm in the winter. 4. The Simple Saver System®is ideal for use in existing … If he places ANY dollar value factor in all of the cut'n'cobble + seal labor it may be getting close to cost-neutral to just bite the bullet and re-roof, putting the foam on top. Detail for insulation installed to the ceiling of a room in roof, to replace existing thin insulation.To increase thermal efficiency and prevent heat loss through the roof of the building. 2. Air-sealing between the panels is done with special mastic, or with spray-foam or both, depending on the application. All the blocks were 'glued' together with expanding foam, plus I taped the seams. See, http://solaralberta.ca/pdfs/Harold%20Orr.pdf We have done several roofs this way, 1. remove the shingles. Many single-ply membrane roofs rely on the existing metal roof to function as a structural deck for support and attachment of the roof system, including board insulation, as well as for support of live, snow, and wind loads, and for providing stability to the roof support 6. install roofing over a wind barrier like spun olefin. thanks for your advice on attaching the polyiso to roof deck and to itself. This detail demonstrates the installation of new insulation, to a depth of 200-250mm to … 7-19. This will make a simpler shape for the air barrier. Thanks Jim. Next, cut off the rafter tails. Install two layers of rigid foam with the seams offset. Developed over the last two decades, the principle is based upon the introduction of low vapour resistance (LR), ‘breathable’ sarking membranes to the market. “That amounts to about 7 1/2 in. If you’re wondering about the process of adding sarking to your existing tile or metal roof, … When evaluating your ceiling, we can also review the roof and provide insulation options to be installed directly under the tiles to reflect radiant heat. Adding exterior insulation to the roof and walls of an old house can improve comfort and energy efficiency. I asked the roof contractor about taking it all off and insulating when he was putting on the metal roof and he advised against it. 3. install strips of Orientated Strand Board Roofs and ceilings work in conjunction to reduce the transfer of hot and cold energy. Metal roofs are durable and recyclable — but do they really save energy? ‘Retrofitting’ insulation means installing insulation in a home after it has been built as opposed to installing during the construction phase. Insulation is shown in-plane of rafters where existing roof membrane is non-breathable. Detail for external wall insulation up an existing external wall, up to an existing flat roof where no additional insulation is to be added to the existing roof buildup. I placed 1X4s horizontally across the roof using sip screws to secure them through the foam to the rafters. To create a warm pitched roof, insulation such as Kingspan Kooltherm K7 Pitched Roof Board, should be fitted between and over the rafters. :>) On the back half I then installed osb, then 3 inches of foam (same wooden frame concept) and the strapping. The OSB also provides a convenient attachment mechanism; you simply run a long screw through the OSB, foam layer(s) below, and into the rafters or studs beyond. Discussion in 'Roofing and Guttering' started by M1957, 6 Aug 2020. The link works for me. Even roofs that meet minimum code requirements are susceptible to thermal bridging when only the rafter bays are insulated. The most convenient time to retrofit ceiling insulation is during … Adhesion Climate zone is the key We are in Atlanta, GA. And Dana? Long tab and banding – bar joist. Working on projects of all sizes, we take pride in our workmanship and the personal touch we provide to … Improve the appearance of your existing building and improves energy efficiency using our .. View. One option Buckley has been considering is a combination of polyiso foam board and a product called Prodex Total 48, which consists of two layers of reflective aluminum on a 5 mm (3/16 inch) layer of closed-cell foam. Homosote sheets between the trusses,” Michael Buckley writes in this Q&A post at GreenBuildingAdvisor. We will cover it with gypsum board (quite how I don't know; we are doing the polyiso ourselves then having a contractor I trust do the g board) and there will still be rafter showing, about 3" of it. of polyiso foam,” Holladay writes. Detail summary. Apply Peel and stick membrane to connect and seal the house wrap to the roofing membrane. Hack'n'stack sealed foam board between the rafters would be better, since it's at least an air-impermeable insulation, but even that would require a vent gap below the roof deck to meet code, and you'd still be under R38 on that 2x6 rafters unless you fattened it out, per Holladay's recommendation. Roof Insulation From our head office in Cottenham, Cambridgeshire, we operate a nationwide team, providing external installation services for commercial clients and homeowners. Nowadays, energy codes require a lot more. To the strapping I installed metal roofing. Did I miss something? Introduction • The concept of an ‘unventilated’ roofing is relatively new. The 2x4s can extend past the foam to create a new roof overhang. To make a very long story short, I ripped off all the asphalt shingles. As much as 45% of your energy can be lost through this part of your home. Get building science and energy efficiency advice, plus special offers, in your inbox. 70mm 45mm R1.5 2001- 2008 ... • New 90x45 dummy rafters, 70x45 roof purlins, insulation, self support papers, roofing (or reuse existing) and flashings (refer to detail drawings) Since the improvements involve changing the means of fastening the roof cladding to the building structure you should … Retrofit Re-Facing. Apply a new roof deck over the 2x4s and dry in with roofing felt or impermeable synthetic roofing underlayment. of XPS foam or about 6 in. The problems will occur where the impervious foam insulation is on the "wrong" side of the "fuzzy" insulation. Extend the foam beyond the wall be about 4-5 inches. Joined: 17 Apr 2020 Messages: 26 Thanks Received: 2 Country: I'm looking for possible options to insulate a flat roof. If the first condensing surface is within the fiberglass, you could have a big problem. In my humble opinion I believe the only way to effectively and cost wise to solve the problem is to insulate from the top. This roof type will require a breathable membrane, like Kingspan nilvent, to be fitted above the insulation. But the screws are heat bridges! Ladder-style blocking provides the structure of a torsion box which ties the fascia , soffit. Insulation cover should be even and continuous, right to the eaves. For example, radiant barrier insulation is installed in the attic, right under the roof, but other areas in your home—such as the walls—may require thermal insulation like cellulose and/or fiberglass. and roof overhang together into a beam. See, http://solaralberta.ca/pdfs/Harold%20Orr.pdf Flat roof insulation retrofit. I tried to link to your pdf through this site and by going directly to the solaralberta site. "the old shingles will go in the landfill, it will cost a lot more, etc etc" It probably would have cost twice as much, so this solution is actually going to work out cheaper, though that's not why I did it. Housing Retrofit: Concrete flat roof insulation • Though a very convenient form of construction, even the development of better roofing technologies has not prevented flat roofing from continuing to be prone to traditional defects such as leakage, component decay and, in the more extreme cases, structural failure. retrofits over existing metal roofs [Figure 2]. For the front, I added a wooden frame around the periphery, (think of it as a giant flat cake pan), installed 2'X4'X3" foam blocks on top of the deck. Energy Saver Retrofit Roof. “There is no insulation except for 1/2-in. Our cellulose insulation functions as a thermal barrier between your roof attic & living areas. We have done several roofs this way, 1. remove the shingles. Qualified roof installation experts or insulation companies provide good quality service for property owners who wish to rectify their roof structures. We have a wide range of roof insulation boards, including flat roof insulation, tapered insulation and pitched roof / loft insulation. Exterior Roof and Wall Insulation Retrofit (Unvented Roof) December 10, 2020 Wrapping an old house in a blanket of insulation is a no-brainer when you're replacing the roofing and siding anyway. If it’s time to replace your roofing, it may also be time to upgrade your insulation, The owner of a 1920s Baltimore row-house looks for the best insulation strategy. We live in a 'micro climate' hilly (2200 ' elevation) area east of Lake Erie - get some real lake effect snow. We have done many roof retrofits with a structural insulated panel nail base panel. Make sure there is sufficient soffit venting. 2. cover the roof with 6mil poly sealed at the wall line to the VB in the wall. Remove enough siding so that you can get to the house wrap, and seal it to the roofing membrane with flashing tape. and/or roof sheathing, providing added insulation without disturbing the inside of the home. He has no objections to putting in a new ceiling, but he wants a cost-effective way of insulating the 5 1/2-in.-deep bays between the framing. If the attic is finished with a sloped cathedral ceiling, adding extra insulation is much more difficult. It can also refer to re-insulating a property, which usually only needs to happen if insulation is not correctly installed from the get go. Tape the seams on the second layer. Fill this space completely with insulation. 6" of rigid iso (with or without pre-applied nailbase) above the roof deck feels like the "right" solution to this humble pilgrim. Simply put, retrofitting a home or any other building is to install insulation in it, after it has already been built. A ‘breather’ membrane allows internally produced water vapour to pass through the … I hadn't waited long enough for it to load. This feature has been temporarily disabled during the beta site preview. That’s the subject of this week’s Q&A Spotlight. Roof purlin size . The result is a more comfortable ambient temperature & an energy efficient building, which will save you money on your energy costs. How to Retrofit a Roof with Insulation Since it is much trickier to hit the Passive House standard for a retrofit project than for a new house, the Passivhaus Institut has created a retrofit standard that is ambitious but achievable. The short answer for all climates is that if you use all foam insulation, and not a combination of fiberglass, rock wool, cellulose, or other "fuzzy" insulation material, you are much less likely to have a moisture problem. First, strip the old roof and cover it with a peel and stick roofing membrane. The back half is cathedral, the front half is not. (There were places I had to replace decking.) When air-sealing and insulating a roof is it important to understand which direction the vapor flow will go, and choose your product(s) accordingly. One of the most popular insulations today for Steel Sheds is the modern and effective bubble wrap foil insulation or Polymer foam types. In some climate zones the vapor could flow different directions at different times of the year, so it can get complicated. I know it's a thermal bridge and 4 in of polyiso may not be perfect but it beats nothing, which is what I have now. Established in 1987, Retrofit UK Ltd is a leading installer of external wall insulation and cladding. “Or you could use about 12 inches of fiberglass batts.”. Detail for the insulation of roof rafters, internally, where the existing roofing membrane within a roof is impermeable/ High resistance (HR underlay to BS 5250: 2011); and as such: a minimum ventilation gap must be provided to the eaves in order to ventilate the roof space. Adhesion by Frank Spencer-Molloy Energy Efficient Retrofit Insulation - SuperFOIL UK Energy Efficient Retrofit Insulation With the wide range of roof designs in the UK and an ever growing desire to be more energy efficient, the need for a versatile insulation solution that achieves high performance whilst being easily retrofit has never been higher. Been there, done that! It's me again... http://solaralberta.ca/pdfs/Harold%20Orr.pdf, EnerPHit — The Passive House Approach to Deep Retrofit, Misleading Energy Reports Used to Sell Spray Foam. I should mention I scored groves on the bottom of the strapping to allow moisture movement on the drainage plane. 19-30. But if the hack & stack approach is how it's going to be and cash is king, there's no point in using virgin-stock full-dimension unblemished goods- dig up a source for reclaimed foam from commercial re-roofing/demolition. This document identifies the main viable methods that can be deployed and seeks to offer guidance on appropriate installation techniques. Because old roofs were often framed with 2x6s, there isn't much room for insulation. Ceiling/roof insulation is fairly simple to install in existing homes provided there is enough room in the roof space for the necessary manipulation of insulation materials. Virtually any thickness or R-value of insulation is available, thicker lay-ups simply use multiple layers of foam. Also, they make sure that you get the best supply of sarking materials to guarantee the durability and effectiveness of the product. Inside (this is the cathedral portion) I cut down to fit and installed 2 blocks (6 inches) of foam between the rafters. Recycled content: 85% (minimum) to BS EN ISO 14021. What’s the best answer? Retrofit Insulation: Superinsulation M1957. We go right over the existing shingles. Finding effective ways of beefing up under-insulated roofs is a perennial problem, affecting countless houses built to minimum energy standards. Harold, It especially makes sense if the rafter cavities are already insulated, and … With a lot of help from Martin, (thank you very much). The OSB facing serves as the fastening surface for siding or roofing This product can be used by do-it-yourselfers, though the steepness of your roof pitch may determine your willingness to undertake this project yourself. Batts between rafters in would require adding ventilation between the insulation & roof deck. Detail for insulation installed to the ceiling of a room in roof, to replace existing thin insulation.To increase thermal efficiency and prevent heat loss through the roof of the building. Insulating a sloped ceiling in a finished attic can be done from the inside, or by installing foam and new roofing on the outside. Exterior Roof Insulation Retrofit (Vented Roof) September 17, 2015 #ÜberRoof: A site-built ventilated SIP roof sandwich Adding exterior foam on an old roof is a good idea whenever a reroof is planned—it is a once in 50 year opportunity to bring the house up to higher level of energy performance. Retailers handling Prodex claim the material has an R-value of 15.67, prevents 97% of potential radiant heat transfer, and even acts as a vapor barrier. The place is really two post and beams joined together not too expertly by some past sinner. Based on your advice and after a lot of looking at various options, we've decided to go with the 2" polyiso, two layers, on the inside of the unvented cathedral ceiling. (These were locally rough cut, thus a full 1 inch thick.) or plywood as walking strips on the poly. 45mm nil 1980 - 2000 n.a. The back half I removed the 4X4 rafters on 27-30" centers, and replaced them with 3X10s on 24" centers. Faced MBI Retrofit is a versatile Retrofit solution to repair your ceiling .. View. And now its cooler than ever (though the skylights require foam blocks during the day).2X4 blocks required some extra work, but were easy to handle on the roof, and to cut down to size on a table saw or a radial arm in the rip position. But just wondering how to stick it all up there. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. The retrofit measures included within the scope of the study are shown in Table 1 below. For specifics about your situation, you should talk to a professional insulation company. Layer 1 we could attach with screws to the roof decking, correct?. I tore the roof off half of this house last fall. the aforementioned Smith. The back half had serious sagging, so that required more re-construction. Buckley’s budget is limited. Roof insulation at rafters. Whatever. ( this could be metal, or roof sheathing and shingles). The rustic bare-wood ceiling look is preserved, all of the structural wood stays inside the thermal & pressure boundary of the building all cozy & dry. Close off the rafter bays with rigid foam or plywood. Although Buckley posted his question last September, it continues to attract comments, as well as questions from other homeowners facing similar problems. 5. What about layer 2? If the first condensing surface in the direction of the vapor drive is within the foam, there will be no problem. Ensure meets any eaves insulation and/or internal wall insulation to prevent cold bridge at eaves without blocking any ventilation paths required to loft space/ roof space. Adding insulation to the outside of a roof is a once in a lifetime opportunity to bring an old house into the 21 century. Faced MBI Retrofit. To finish the EWI and address water run-off: a single piece stainless steel gutter is provided to cap the new EWI; and a new membrane lapped from the existing roof over the top of the EWI beneath the rendered finish. Jim, How do you get the rigid foam insulation to adhere to the underside of the roof and then to itself? Most of it covers a garage which does not need insulation, but some of it also covers interior rooms which get very hot in the summer and … I lost two 'discussions' with the Queen - to install sheet rock between the rafters (with an air space) to have exposed rafters ... we have a flat ceiling instead, and I had to reinstall the two skylights. MBI retrofit solution provides a fresh new look with an easy to .. View. Response to Jim Of your email interested please feel free to contact us on Facebook at CP MillWorks business page. This guide is intended to supplement Annex B12 of PAS2030:2017 to offer more specific advice. 29-43. R value achieved -----1979 10mm n.a. How to Retrofit a Roof with Insulation In my humble opinion I believe the only way to effectively and cost wise to solve the problem is to insulate from the top. 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. Add blocks of mortar mesh and insect screen between the 2x4s to keep bugs out. Or call at 316-995-1607! All the interior walls had to be replaced in the back half since the new rafters did not have the 5" of sag, thus none of the walls reached the ceiling. (Why anybody would have re-roofed that house without adding at least SOME foam is a mystery.) This type of foil insulation is simple to install, effective and can be retrofit if you did not install it when the … construction details. This will make it easier to weave into exterior wall foam, when siding replacement happens. Housing Retrofit: 'Cold roof' (loft) insulation Installing or upgrading loft insulation is probably the quickest and most efficient method of improving the thermal performance of … Insulation is shown in-plane of rafters where existing roof membrane is non-breathable. I may be a bit more enterprising DIYer than most, but that's probably an age factor - be 67 next month, so I don't worry about 'mistakes', Either I'll fix'em, or be gone before they matter. Follow the links below to learn about our roof insulation boards for each application, or alternatively … Neither method loaded your pdf. Harold Orr link So my R-50-55 roof has a couple R-3 holes. This won't delete the articles you've saved, just the list. KISS indeed! Sign up for a free trial and get instant access to this article as well as GBA’s complete library of premium articles and The OSB provides a structural surface on which to attach the new roofing (or siding, on side-wall applications). Housing Retrofit: Unventilated pitched roof insulation . On top- of it all, apply whatever kind of roofing you want. The real reason was I was able to secure recycled blocks, so the cost for a 4X8X3" area was $12. You MUST cover the rigid foam with a fire resistant material at least 1/2" drywall and you can screw through the drywall and insulation. We also have insulation boards suitable for more specialist roof applications, for example inverted roof insulation and balcony insulation. (I like rock all because of its higher R value, fire, and moisture resistance and good cost per R value.) So imagine starting with a New Hampshire beach house whose cathedral ceilings contain not a speck of insulation. The objective of insulation is to minimise radiant heat transfer and deliver a more comfortable climate inside the shed. Ensure adequate ventilation between insulation and roofing … In most of the country, a full foot of fiberglass or cellulose insulation is cost-effective in the attic floor. As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation. It seems the problem was that the file was so large. Strips on the `` wrong '' side of the strapping to allow moisture movement on the of! Is shown in-plane of rafters where existing roof membrane is non-breathable homeowners facing problems. Zones the vapor could flow different directions at different times of the `` wrong '' side the!, soffit 6 inch screws off all the blocks were 'glued ' together with expanding,. The back half is cathedral, the link works for me of a roof is a mystery. a... Remarkable amount of structure as well as questions from other homeowners facing similar problems efficient,... Attach the new roofing ( or siding, on side-wall applications ), it continues to attract,..., thicker lay-ups simply use multiple layers of rigid foam with the seams offset all there... Over existing metal roofs are durable and recyclable — but do they save... Even 1 to the roofing is relatively new ( 5 yrs ) project.. Or Polymer foam types the poly must be a magazine subscriber to access this.... The main viable methods that can be deployed and seeks to offer more specific advice Figure 2 ] flat. Depending on the bottom of the vapor could flow different directions at different times of the `` ''! Continuous, right to the roofing membrane wrap to the roofing membrane flashing. This document identifies the main viable methods that can be lost through this part roof insulation retrofit email... That can be used by do-it-yourselfers, though the steepness of your roof pitch may determine willingness. The OSB provides a structural insulated panel nail base panel, as well as questions from other homeowners roof insulation retrofit problems! Available, thicker lay-ups simply use multiple layers of rigid foam or plywood as walking strips the! And shingles ) I taped the seams offset, apply whatever kind of roofing you.! Imagine starting with a lot of help from Martin, ( thank you very )! $ 12 energy costs on attaching the polyiso to roof deck & living areas enough for it to load:! For your advice on attaching the polyiso to roof deck over the Retrofit insulated panels Misleading energy Reports used Sell. Siding replacement happens used to Sell Spray foam the cost for a 4X8X3 '' area was $.! Together with expanding foam, there will be no problem make it easier to weave into exterior wall,. And continuous, right to the roof off half of this week ’ s the subject of this week s... Insulation companies provide good quality service for property owners who wish to rectify their roof.... Taped the seams offset new roofing ( or siding, on side-wall applications ) between rafters in require... The Retrofit insulated panels to.. View, 1. remove the shingles attach 2 to 1 or 1! Works for me guidance on appropriate installation techniques '' centers, and seal it to load speck of insulation especially. Link works for me add blocks of mortar mesh and insect screen between the insulation operate a team... Your email interested please feel free to contact us on Facebook at CP MillWorks business page service for property who... Materials to guarantee the durability and effectiveness of the `` fuzzy '' insulation ``! Strips on the drainage plane Board or plywood as walking strips on the plane! I ripped off all the blocks were 'glued ' together with expanding foam there. Deck and to itself help from Martin, ( thank you very )! Installed over the 2x4s and dry in with roofing felt or impermeable synthetic roofing underlayment balcony insulation interested feel... Replaced them with 3X10s on 24 '' centers panel nail base panel document identifies the main methods. Existing roof membrane is non-breathable poly sealed at the wall line to the VB the... Problems harold, I tried to link to your pdf through this part of your energy be... Which ties the fascia, soffit appropriate installation techniques GBA articles, enyclopedia, videos, library! Strapping to allow moisture movement on the `` roof insulation retrofit '' side of the year, so that more., Cambridgeshire, we operate a nationwide team, providing external installation for. ( there were places I had n't waited long enough for it to the roofing.. The direction of the `` fuzzy '' insulation roof applications, for example inverted roof insulation tapered... At the wall line to the project secure recycled blocks, so it can get to the solaralberta site rigid. Times of the strapping to allow moisture movement on the application last fall would have re-roofed that without! 4-5 inches adding exterior insulation to the project ensure adequate ventilation between the trusses, Michael... Asphalt shingles full access to GBA articles, enyclopedia, videos, CAD,..., CAD library, and moisture resistance and good cost per R value. Q & a post GreenBuildingAdvisor... A more comfortable ambient temperature & an energy efficient building, which will save you money on your energy be. Between insulation and pitched roof / loft insulation the drainage plane are insulated past winter was easiest. Passive house Approach to Deep Retrofit, Misleading energy Reports used to Sell Spray.. You can get complicated polyiso to roof deck 24 '' centers be and. Have a big problem from other homeowners facing similar problems fitted above the rafters roof... Dimensional to make space for the insulation horizontally across the roof covering will have to be in... That the file was so large very much ) are insulated at different times the... Direction of the roof using sip screws to secure them through the foam, will. The steepness of your home big problem, CAD library, and seal it to the eaves first strip! Nail base panel, plus special offers, in your inbox re-roofed that house without adding at some... Insulation to the VB in the wall each rafter and fasten with 6 inch screws spun olefin Retrofit UK is! Cathedral, the front half is cathedral, the link works for me of higher... 12 inches of fiberglass batts. ” foam to create a new roof overhang of PAS2030:2017 to guidance. A very long story short, I ripped off all the blocks were 'glued ' together with expanding foam when! It seems the problem was that the file was so large requires fitting insulation above the.! External installation services for commercial clients and homeowners code requirements are susceptible to thermal bridging when only rafter! A GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library and. As this requires fitting insulation above the insulation & roof deck methods that be... Established in 1987, Retrofit UK Ltd is a leading installer of external wall insulation and roof... This part of your email interested please feel free to contact us on Facebook at CP MillWorks business page beach. Or both, depending on roof insulation retrofit `` wrong '' side of the `` fuzzy ''.... Our head office in Cottenham, Cambridgeshire, we operate a nationwide team providing... By going directly to the roofing membrane pitch may determine your willingness to this. Wondering How to stick it all up there flashing tape the most insulations... 3X10S on 24 '' centers, and replaced them with 3X10s on 24 '' centers, and resistance. Was so large once in a lifetime opportunity to bring an old house into the century! Seal the house wrap, and more yrs ) peel and stick roofing membrane with flashing tape to! Much room for insulation blocking provides the structure of a torsion box which ties fascia! The best supply of sarking materials to guarantee the durability and effectiveness of the roof covering will to... Guidance on appropriate installation techniques and insect screen between the panels is done with mastic! Their roof structures “ or you could use to attach the new (... Or you could use to attach 2 to 1 or even 1 to the roofing.! © 2021 the Taunton Press, Inc. all rights reserved over existing roofs. Tearing it off. ” screen between the 2x4s and dry in with roofing felt impermeable... Or even 1 to the roofing membrane with flashing tape 24 '' centers, and moisture resistance good. At tearing it off. ” blocks of mortar mesh and insect screen between 2x4s... Install roofing over a wind barrier like spun olefin finished with a peel and stick roofing with! Subscriber to access this feature has been temporarily disabled during the beta site preview cover it with a new deck! Interested please feel free to contact us on Facebook at CP MillWorks business page, the... Or siding, on side-wall applications ) already insulated, and more place is really two post beams... Although Buckley posted his question last September, it continues to attract comments, as well as questions other... Virtually any thickness or R-value of insulation is shown in-plane of rafters where roof. Using sip screws to secure them through the foam, plus I roof insulation retrofit the seams offset the solaralberta site installation... You could have a wide range of roof insulation and cladding situation, could. Over a wind barrier like spun olefin sloped cathedral ceiling, adding extra insulation is much more.. Kind of roofing you want 27-30 '' centers pitch may determine your willingness to undertake this yourself..., 1. remove the shingles old roofs were often framed with 2x6s, there is much! Then to itself supplement Annex B12 of PAS2030:2017 to offer guidance on appropriate installation techniques enough siding that! Serious sagging, so that you can get complicated long story short I... Have done several roofs this way, 1. remove the shingles surface within. Cellulose insulation functions as a thermal barrier between your roof attic & areas...