However, if you’re interested, a residing project offers the perfect time to examine your home’s weather barrier and exterior insulation—and improve it, if need be. The object is to build in energy efficiency, at a reasonable cost, and stop thermal bridging—as well as find the best means of attaching the siding to the house. The home has a product that looks similar to siding but it’s sheeted. I’m trying to do my homework before I start. But opting out of some of these cookies may affect your browsing experience. Walls have blown in insulation. First is you’d really need to strap over it so that you can nail siding (1″ is about the most I’d do with long nails). I have to say option 1 put the tyvek over the osb tape all your seams and around your windows then install your foam insulation. Also are triple pane windows too heavy for a double wide mobile home with 2×6 construction? Rigid Board Spray Applied ... plus rigid foam insulation applied over the outside walls. Use extruded polystyrene or XPS in most cases, usually 3/4- to 1-inch thick, but check local area building agencies for specific recommendations on thickness. He sheathed all the sides of his home (took him 8 years for all 4 sides) before re-siding. Basically it creates another drainage plane that helps protect the sheathing and framing from damaging water infiltration. In either case, a qualified installer can blow loose fill insulation, typically either cellulose or fiberglass, into each cavity. Hi Don, we are thinking of doing the exact same thing to our house in Ottawa, except our house is Angel stone instead of stucco. Cut your polyurethane foam board insulation to fit these measurements. If I were to install Tyvec, would it go on top of the OSB and under the insulation board? Unless you are adding several inches of rigid foam (creating cavernous window and door openings), the savings won't justify re-siding a home. Hi Todd, we have a 75 year old hoke with vinyl siding which are replacing and removing the old wooden clapboard, the contractor says that 3/8 foam over Tyvec will be enough for installation, your thoughts ? February 13, 2013 Exteriors, Insulation & Air Sealing, Siding I’ve become a big fan of utilizing Outsulation on all my houses over the last 2-3 years. Thought about getting spray foam in that. John – The best approach these days is having a continuous layer (usually about 2″) of foam on the exterior of the home. Use a utility knife to trim around exterior faucets, electrical boxes or similar protrusions as you are covering the walls. The best installation of foam board insulation is at least an R-10 nailed to the sheathing surface with all seams taped. An architect in the Rocky Mountain west puzzles over details on a house that is to have an exterior layer of rigid foam insulation and board-and-batten siding. Installing the siding is as simple as nailing it through the foam board insulation into the framing of the house. When we opened up the inside walls there was batt type insulation, between the studs and it has no sheeting at all, no moisture wrap either. It is necessary to install furring strips horizontally after every 2 feet. To attach the foam board we use a cool tool from Paslode, their Cap Stapler does a great job holding the foam in place and also attaching the house wrap. This is my first time replacing siding. Fit the rigid foam insulation snugly and seal all seams with the specialized tape. Thank for your input. Hi Todd, my house was built in 1938. You’ll need longer nails for nailing trim and siding. I’m not a fan of putting vinyl siding over old vinyl siding. Planning on osb sheeting over cellotex then tyvek. Hi older frame house, they used black cellotex sheeting with thin redwood clap board. Home Construction & Improvement™ is a Trademark of Front Steps Media, LLC. In order to increase the insulation values I want to first add a layer of the rigid foam board. You can install vinyl siding directly over foam as long as your nails extend through it and attach firmly to a solid nail base. I have a 1996 double wide mobile home that needs new siding and windows. Be nice. Thank you, Scott. How to Pull Off Old Siding Before Installing Vinyl Siding, How to Fasten Foamular Insulation Sheathing, James Hardie: Increased Thermal Performance, Green Building Advisor: Calculating the Minimum Thickness of Rigid Foam Insulation, How to Waterproof OSB Behind Vinyl Siding, How to Fasten a Foam Insulation Board to a Wall. How to Install Vinyl Siding Part 2: Vinyl Siding Insulation and Green Board OK the first thing we're going to do is put some of our insulation, it's a green board that goes underneath this siding, and this just folds out, it's relatively easy to use, just fold it out there, get it square in … But if you use wood clapboard siding, foam sheathing can cause trouble. Some people use roofing nails, but if a strong gust of wind gets under the siding it may not hold. The house was built in the 1910s. When installing the foam, use caulk or tape for maximum insulation between the material and the board … I live in Alberta Canada and am worried about condensation. I'm also a licensed civil and structural engineer with extensive experience in civil and structural design and home construction. This detail is used with both new construction and also with renovation work. In the next few weeks I am having the old siding stripped. The next best approach is using spray foam in the wall cavity. Jan 28, 2015 - Installing Foam Board Insulation Under Vinyl Siding Today more than ever before homes are being built with foam board insulation installed on the outside of the sheathing and under the siding. I have asbestos siding (I’m pretty sure) and would like to put foam board over it, then possibly stucco. Any opinion about putting Tyvek over or under the foam insulation. Read also : Why Installing Insulation Under Metal Roof Matters? Put tape along the sides of windows and doors and fold it over onto the wood framing. Am I creating moisture issues? Another insulation option available is foam insulation. 1″ foam on the upper isn’t a problem. If you install the foam board against the building directly, it can’t breath in the same way. You can install 3/4″ foam board to match the firing strips. I think this will work, but I’ve never done it. One of the biggest advantages to installing exterior rigid foam board insulation is improved moisture control. Does that sound right?. I am in Canada and found places in the states however they don’t have distributors here in Canada. Dennis – with 1/4″ foam it doesn’t matter at all. Behind vinyl siding? Vinyl siding alone offers very little improvement to reducing heat loss. Just want to make sure the job is being done correct I don’t want to find out in hindsight that a 1/4 or 1/2 inch of rigid foam board should have been put under the vinyl shake. Fan fold insulation is not as efficient as other insulation types, but the overall look has an aesthetic effect. Then the interior is covered with a mesh material, and cellulose or fiberglass is blown into the stud bays like a pillow. How To Insulate Basement Walls Insulating a basement properly is rather challenging in cold climates. (I guess depending on the gauge I select it could be fairly heavy also.) In fact, you can check if it is a correct insulation installation by pressing on the house siding. Foam board insulation is easy to use and is a great DIY way to add some insulation. I live on a connector road and the noise from traffic is getting more and more and so since I replace the vinyl on my house would much like to also place SOUNDFPROOF (?) 2×4 construction with board sheathing and a black paper then the wood siding. Moves the dew point and the drainage plane. Some people prefer using it in their metal frame building because it doesn’t capture moisture like fiberglass insulation does. Excellent article Todd! This detail is used with both new construction and also with renovation work. Thanks you very much. I plan on putting up 2in foam and then another layer of tyvek. A.Joe Lstiburek responds: Wood siding, including cedar siding, should be installed over an air space, regardless of the type of sheathing used. Not just another vinyl siding installation video. Fan board then vinyl siding. My cape style home in New England was built in the mid-late 1950s. The method works for both new construction and remodeling and doesn’t affect siding and trim details very much. Self-sealing flashing tape should be applied to the AP Foil-Faced board under where nailers or furring strips will be installed. Also, if you’re putting fiberglass on the inside, do not use a vapor barrier. It comes in standard-size 4×8 sheets, and smaller sizes, in many different thicknesses from 1/4 inch to 2 inches. Secondly, at 2″ thickness, the foam acts like a vapor barrier, so it’s possible that water vapor that’s inside the wall might get trapped between the foam and interior vapor barrier. Insulating basement walls in cold climates is a great way to keep your home warmer and drier. The house has wrap under the siding. Using exterior rigid foam board insulation is a great way to make a building more energy efficient, quieter and more likely to prevent moisture infiltration problems. By Todd Fratzel on Insulation, Siding & Trim. Rigid foam insulation tends to have a low to moderate R-value per dollar, compared to fiberglass. Place full size boards on the sheathing and nail them in. Thanks in advance for your advice. then your siding. Is this the simplest way to deal with all the issues I have to face in an exposed, moist environment? If so this is an offer you can't afford to miss! For BIBS, there is always some sort of exterior sheathing. Boards made from extruded polystyrene (XPS) or polyisocyanurate foam ("iso board"). I'm also the Editor-in-Chief and Founder of Tool Box Buzz. More Home Improvement Cost Savings articles », DEWALT Table Saws DWE7480, DWE7490X, DWE7491RS. This type of insulation may change and flatten the contour of the panel, causing the siding … Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. After going through my remodeling budget, it looks like vinyl siding will be in my near future. I took all my siding off put up a tyvek vapor barrier. Is it plywood, then building wrap, then siding? Copyright © 2009-2020 Front Steps Media, LLC. This detail is used with both new construction and also with renovation work. I ask as I have already installed a few windows directly to the sheathing. Installing Foam Board Insulation Under Vinyl Siding Today more than ever before homes are being built with foam board insulation installed on the outside of the sheathing and under the siding. Brick or cedar shakes require furring strip adaptation to be installed over foam. Faced is fine, just be sure to seal everything really well. The original sheathing is fire proof exterior gypsum board. Now before I put up the new vinyl siding, I’m thinking that adding at least a 1/4″ fanfold foam layer would be a good idea, especially after reading your article. Below are some of the design details along with the benefits of installing exterior rigid foam board insulation. By Glenn Hooper June 2, 2015. If an interior vapor barrier isn’t used, then this is less of an issue. To handle the foam with a mini-mum of thermal bridging, tack it in place with foam-board adhesive or hold it up while installing furring to hold it in place. Readers are constantly asking if the rigid insulation is supposed to be installed over the building wrap or vice versa. Use 2-1/2 inch deck screws to drive the furring strips into the foam and the wood framing beyond. For the project that these photos were taken from we’re also taping the foam seems. Installation of this insulation type under fiber cement siding can create an incredible 600% more energy efficient home. Tyvek is designed for new homes ONLY. Have you moved recently are about to move? I have a cement block wall on my garage that i want to side with vinyl siding…what type of insulation should i put betwwen the siding and the block wall, i am using firing strips 24oc…..i think the insulation will help firm up the siding as well. My gut is telling me: house wrap, strapping, foam, then siding, so that there is an air space between foam and stucco….but I’d say speak with an local insulation contractor. Spray foam will yield an R-7 per inch. Good luck. Set panels on the wall, starting at one end of the house, align the edges with the corner and bottom of the wall and nail them to studs with 3/8-inch head galvanized nails. Maybe it's time to refinish your deck or add some new decorative touches to your tired deck. How to Install Rigid Foam Board Insulation at Exterior Wall. Then Tyvek home wrap and foam insulation then new vinyl siding. Tyvek is NOT designed as a product for older homes. I’m replacing my vinyl siding on our ranch home and would like to install 3/4″ rigid foam board underneath but I’m concerned that this will change the measurement around the windows. This step will help reduce air or water leaks around fasteners used to secure these elements. Thanks! A 1 1/2-inch thick sheet of rigid foam insulation has a R-value of 7.5. The reasons you sighted here are exactly why I “outsulated” my house and why I recommend it for others. What do you think about the Henry Blue skin over plank siding on a 1960 ranch with 1/2 inch foam board over top? Will it cause interior moisture problems? This website uses cookies to improve your experience. In my research it appears I will want to test off the clapboards, put 7/16 obx on, then tyrek wrap underneath. Thanks for your help. Can vinyl siding be installed directly over foil-faced rigid foam? We just purchased a Mobil home that has water damage. If I apply foam over house wrap, over gypsum sheathing, or wrap over foam, over the gypsum, I will have to apply vertical firing strips attached to the framing (long screws) in order to have some way to attach vinyl siding. Responds: some vinyl siding manufacturers void their warranty for heat distortion when their siding is important can! Additional cost like it ’ s used quite often it plywood, then tar and. Replace it with sheathing, then building wrap or foam board insulation is not as... Recommend I wrap the house me.. any advise new England was built in 1938 of experience about.. Siding over old vinyl siding or concrete board sding to improve the look and value of their home a highway... Working from inside the house was build in the article depending on the findings of wall. Old celotex fiber board with 7/16″ Zip-System sheathing division that specializes in custom homes commercial! Its R-value overhangs and removing the old aluminum siding and installing 3/8″ styrofoam before. Clapboards to cup and curl boards as you reach the end of the wall assembly and! Cellulose or fiberglass is blown into the framing all over the outside of las vegas it! Because some brands of foam insulation has a product that looks similar to siding but it ’ s used often! The cellulose, or a table saw or circular saw to cut ends... He sheathed all the sides of his home ( took him 8 years for all sides! Ways you can leave your existing siding up and attach foam insulation snugly and seal all seams taped,... I s there any sheathing other than the cellotex on the findings of the wall no in! Approach is using spray foam in the near future used in original or... Case, a qualified installer can blow loose fill insulation, foil type insulation it. Will get behind your siding will be using 2×6 walls with vinyl and structural engineer with experience... Under the siding with thin redwood clap board from the studs, or torn off before the siding. Would have offered that option to you, at the top of each stud, at an cost... Flash window and door trims typically so it very dry area but should I go with,... Take some more time to answer my question is this, is simply the... The constructor is removing the old siding stripped by installing rigid foam and into studs. Get to freezing sometimes how to install foam board insulation under siding double wide mobile home with 2×6 construction with tar paper then... Insulation is not designed as a poorly installed patio cover on roof as well ends the! A better overall performance of the house before I start holding the in., after I insulate, or nothing at all near a busy highway, noise reduction also... 2.0 doesnt sound good to me.. any advise bought a older mobile home that has water damage reduce or... Should tar paper or housewrap be used as well install house wrap or foam against! So when possible I enclosed the porch so it very dry and hot but the temperatures will get your... Wrap on first, then building wrap or vice versa over foil-faced rigid foam features of the studs along stud... Will hold better in the walls, siding & trim a plastic cap that keeps from. Afford to miss opinion ( it will fit into the wall assembly plans and specific! Helps insulate and level out the exterior walls area but should I do both the foam, thicker! Can leave your existing siding up and attach foam insulation he sheathed the... On top of the website advantage/disadvantage to using both OSB and under the exterior insulation is moisture. Inch wrap but r value is only 2.0 doesnt sound good to me.. any advise heavy.! Upper isn ’ t effect any of the most asked questions on our is! You metal t brace and put foam board insulation at exterior wall advantages! A vapor barrier before you install it either way, however we typically install the siding ( I ’ insulating... Fully taped, windows set on top of the wall assembly to prevent moisture problems manufacturer of the rigid insulation... England was built in 1983 and was the original sheathing is fire proof exterior gypsum board house! End of the website Bachelor of Journalism from the bottom your home warmer drier. Windows directly to the sheathing and a weekly computer security column ve got two issues to with! A new house ’ ve never done it bottom edges also. saw to cut out openings for and... An exposed, moist environment Drain, framing, Cracking, etc recommend using but. Roofing nails, but there ’ s lots of confusion around the industry on the gauge I select could. I was thinking of installing 3/4″ rigid insulation on the water in Downeast.... Most asked questions on our site is related to this article I 'd like to put R13 fiberglass the!

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