The Department of Energy has a different list for different climates. If your attic is warm and warms the bottom of a cold roofline, you can create condensation with the right conditions so I would caution you against this. They're most effective when used in conjunction with a continuous ridge vent. The ductwork has been sealed and insulated. I will eventually insulate under the roof deck as well as insulate and air-seal the attic floor. Im wondering what to do? We waited another year and then added insulation from R7 to R38. Send your questions to Tom: http://homeshowradio.com/ask-tom-tynan/ See more AskTom videos: http:. We and our partners use cookies to Store and/or access information on a device. The low slope prevents me from using an edge vent. There are two gable vents but they are obstructed by a chimney. https://www.radiantbarrierguru.com/attic-ventilation-basic-tips/. The fascia is a horizontal board that is fixed to the ends of roof rafters or trusses at the eaves of a building. Intake air is critical to maintaining a proper flow of air throughout the attic space. I am not allowed to use vented soffits on the low side for fire code reasons. I had additional blown insulation added, although I was told by the insulator that my R value was already quite good and that things appeared to be sealed properly in the attic. Who wants a big, bulky vent smack on the side of their home bringing the most attention to the roof of their house? Cross ventilation openings should be no less than 1/16 inch and no more than 1/4 inch. ft. of airflow per 150 sq. The international building code requires attics to be vented according to the minimums specified in International Residential Code (IRC)R806.1: All attics need to be ventilated to avoid problems with mold, moisture, high energy bills, and damage to the roof or gutter system. Adding airflow will help drop the air temps in the garage, so if you plan on using it to work in, that would be a good idea. I will be installing a metal roof within the next few months and since I have the opportunity to do the venting correctly, Id love your expertise on what that would look like. Alternately, if you spot thick ridges of ice on the gutters or have had to melt ice dams in your drainage system, this is an indicator that the attic is not properly vented. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. I asked a lot of questions and I was never actually shown if my house HAS any soffit vents! We are moving quickly to replace the 1950s Balsam Wool insulation (maybe R2 value) with new fiberglass and heat shield foil on attic floor and then replacing the three-tab roof with GAF architectural shingles, probably black. A blocked soffit vent is almost as useless as not having intake vents at all, so if you are insulating the attic, make sure to avoid placing insulation over these vents. Get help with your home improvement projects. It may seem like a long road ahead trying to figure out what type of ventilation your attic needs, but there is certainly a solution out there for you. Also, does the ridge vent need to be entire length of the ridge (ranch home)it seems like that is a lot of exhaust for a home my size (1900 sf). Even on a calm day the flow of cool air in through one gable out through the other side can occur at a regular rate. It is typically made of wood, uPVC, or metal, and serves several important functions in roofing and construction. Use eye-brow vents that are on the top of the sloping roof surface near the soffit/eave area. " (See ICC R806.1.2.) If your house has minimal (or non-existent) overhangs that wont accomodate soffit vents, or you simply arent able to install them for some reason, then you have a couple of options to provide intake air inlets low near the roof perimeter. ft. of attic about living space. Also, leave the ridge vent exposed and leave about a foot uncovered (no barrier or board) the whole length of the roof where the roof meets the soffit so air can circulate between the rafters. Exhausting the roof with a smartvent or eyebrows? Is it worthwhile to install soffit vents and a ridge vent if there is no air channel? Your house - your attic is not properly ventilated because you don't have any way for the air to get in the bottom." TOM: OK. You can learn more about how that works here: Why An Airspace is Required for a Radiant Barrier. There are several different styles/brands. Started smelling fumes in the basement. yikes. How To Vent an Attic Without Soffit Vents The standard intake vent for attics is a soffit vent (also sometimes referred to as an "eave vent") and it allows for air to enter the attic down low, near the eaves. Once you have the attic spic and span, you need to figure out what your target R-value is. Your email address will not be published. However, there is no daylight through the soffit vents when I look through them from inside the attic (with attic lights off). The only air inlet (since no soffit vents) is a couple of gable vents. Batt is the type of insulation that looks more like a blanket and it is easily pulled off and laid on. On inspection, there are 3 or 4 rectangular intake soffits feeding the vaulted ceiling from the outside, but the roof does not appear to have an exhaust (the two eyebrows on this roof feed from the attic that was sealed off). Without proper ventilation to keep things cool, the excessive heat and humidity can prematurely age shingles, warp and distort roof sheathing and cause mold and mildew growth. Although this may be a place of storage for you, it is the first step to stopping air from escaping. However, soffit vents are often blocked by inexperienced DIYers when insulating the attic. Photo 1: Mark attic roof air vent locations. I am getting mixed signals from those in the home building industry and the internet, some telling me not to install both gable vents and maxi roof vents as they conflict with each other in getting hot air out, some telling me just gable vents or just maxi roof vents. The consent submitted will only be used for data processing originating from this website. Builder installed a static mushroom vent in attic roof above garage , but were not seeing any soffits or lower vents. Or, should I suck air out both ends and allow the fans to suck conditioned air to provide ventilation? I I have eaves but am not sure if they can soffitted or we should add low gable vent. Previous owners covered up three of them and now there is only one (albeit very large) louvered gable vent. The only problem is there's no soffits in this house. Wondering if a minimal amount of airflow through the fiberglass is better than none? He is skilled in residential, commercial, industrial and institutional plumbing, electrical, carpentry, installation, renovations, and project management. Im inclined to say to myself I got taken but maybe no harm done since the four windows and open space from 50 year old fan not working is enough fresh air coming in. Thank you. It's a good idea to install shingled intake vents and roof edge vents during the initial roof installation, but you can also install or replace existing intake vents when you update the roof shingles. Greatly appreciate any thoughts. How to Troubleshoot and Repair a Leaking Ceiling, How to Prevent Ice Dams With Insulation Baffles. Soffits may be perforated or vented to help air circulate through your attic space. feet. https://codes.iccsafe.org/content/IRC2018P7/chapter-8-roof-ceiling-construction. You can check if your attic needs better ventilation by touching the ceiling of the floor below on a hot day. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. A ridge vent without soffit vents won't work as intended, and vice versa. They can find all the areas where the most air leaks are, can say how much is going to be just enough and are capable of installing it without any major flukes. TOM: So here's the solution, OK? The fans by themselves aren't that expensive, the labor to install it will probably be most of the cost. It may also benefit the interior space removing the heat up high. Does this make sense and do you have any suggestions that would help? Yes, this would be the correct order to do it: foil first, then insulation board. Required fields are marked *. However, without soffit vents, that makeup air comes from indoors, a situation that is not desirable in any season. I have a vaulted ceiling in a bedroom that terminates at the wall where the attic is. The two most common options are to: If you are installing a new roof, consider a drip edge vent. I had a new asphalt shingle replaced on my roof a few months ago. I had an old roof replaced this past Sept. 35+ years old leaks occured that started the roof project. Since you are installing a new roof, your timing is perfect. Without soffit vents, the ridge vents will draw air through other attic inlets, like a gable, but this will limit the air circulation in the attic. By adding adequate ventilation, a homeowner can control the humidity under their roof, and the perforations in a soffit vent are perfect for this purpose. Good idea or bad? If you want to bulk up your r-value, you should add it to the attic floor, where you already have r-value or else omit the board all together. So the attic fan is drawing air out, but theres not enough air coming in, so its creating a vacuum which is causing the exhaust fumes from the chimney to backflow into the vent from the hot water heater. These vents are positioned well for drawing air into the air and they are easy to keep clear of ice and snow. Went all the way up to the roof deck and applied insulation and tongue/groove paneling below (looks great). What is the best way to apply the radiant barrier and fanfold board to the rafters (which goes first against the rafters, radiant barrier or fanfold board), so that there is still circulation and no issues with moisture? Too much spacing and your insulation efforts could be all for not. Insulation can make a huge difference in how well heat stays put and thus, can majority change your heating costs. The bedroom gets up to 90 degrees when it is anywhere above 80 degrees outside and is warm to the touch all the way up, including the recessed lighting fixtures. Hi Ed, My home is English Tudor styled and has no overhang/soffit. You will want to consider another option. Even without soffit venting, it is important to provide an air gap at the soffitlevelto help keep the roof deck dry. If there is plenty of soffit venting and if you have a relatively tight ceiling, then the makeup air will come from outside, which is desirable, summer and winter. With a venting drip edge, you will likely only have to remove about an inch off the part of your roof that covers the rafters on your roof. Typically you would have a gable vent on each end of the attic. Instead, the attic needs exhaust vents to allow hot air that has risen to the peak of the roof to escape the attic. Soffit venting is a great way to introduce air into the attic without adding any noticeable additions to the home. Do not block attic vents in winter. After assessing my attic space I noticed I have 5-6 soffit vents at the bottom of the attic however with the way the space was sectioned off between the 4 units I dont have any access to the ridge vent up top. The guideline for attic venting is 1 ft for every 150 ft of attic floor, if there is no vapor barrier between the living space and the attic. Basically, its a slot cut in the deck a couple feet up from the drip edge that will act like soffit vents an allow air to get into the attic. Please HELP!! A ridge vents works by drawing air upward and out of the attic space. BEST SOLAR OPTION: iLIVING Solar Roof Attic Exhaust Fan. Ventilating attic spaces can help regulate temperatures in your living spaces. Does this make sense and do you have any suggestions that would help? I have two contractor proposals. One way to know for sure if to hire someone (or DIY) to check your attic ventilation with a smoke test; theres adequate attic ventilation if the smoke exits out the exhaust vent during the test. Hello everyone. Remember, its a bad idea to mix exhaust vent types (passive vents with active fans). The key is having plenty of INTAKE air coming in lower, typically via the soffits. It is able to conform more easily than batt insulation and thus, can get into areas that other types of insulation normally could not. Be patient and be thorough and you will have another DIY project done! I had not heard of the single fan before as a solution. Use a passive system and you wont have issues with sucking air out of your home (or chimney). Many sincere thanks, Liz. Brock I dont ever recommend mixing passive and active vents in the same attic because it almost always leads to problems. How Much Cooler Can My Attic Be After Installing a Radiant Barrier? I was thinking when we replace the roof, we should install a ridge vent. But no issues, just hot in summer. The new ridge vent contributes to attic depressurization, and the result is that more conditioned air is pulled through the ceiling leaks, raising your energy bills. This is how ventilation works and adding a powered fan to an existing passive system is just asking for trouble. Mary ice damming has to do with having a relatively warm roof (usually from leaking warm air out of the attic floor) and so the solution is to have a super cold roof. It has low slopemaybe 1/12 or 2/12? Greebo is spot on, you want soffit vents for your air intake. The total venting space should equal 1/150 of the floor . Hope that helps good luck! Once this is done, suit up in appropriate protective gear and get to insulating. Hi Ed: We have a small 1980 log cabin, one-floor with great room/kitchen on one end and bedrooms on the other end. Install a ridge vent along the roof peak so that the air has somewhere to exit the attic space. When the attic or roof heats up, the ice or snow on the roof melts. You'd have to extend or actually reshingle the bottom layer of shingles at the edge. Then, add more insulation on the floor and cover it up with our SuperPerf AtticFoil. Loose fill is just as it says loose. Well, you are not the only one who has experienced it. Due to their nature-reliant construction, they are super energy-efficient and can save you some serious money when it comes to your homes energy expenses. Original (?) The upper portion is defined as: "Upper ventilation shall not be lower than 3' below the ridge or highest point of the roof. Without a fascia board, water could enter the roof space and cause rot, mold, and other types of damage. Manage Settings Whats surprising is that there is evidence of moisture (drips probably from snow melt coming in on roofing nails) but there was barely any mold in the attic to the surprise of roofing contractors, remediators and others weve had do work in the home. ft. = 3 sq. Ridge vents can work without soffit vents; however, this won't be very energy efficient. We live in Boise. The results? We are replacing the roof in a couple of weeks. Our house is a Garrison Colonial (post WWII style) with NO soffits. This is going to a ventilation system that is active, rather than passive, but it also requires electricity in order to function. More info here: https://www.radiantbarrierguru.com/attic-ventilation-basic-tips/. Having one without the other is not doing you any good. If you will remove the fan, then the gables can be left alone but consider a ridge vent. You can see an install here: How to Install AtticFoil in a Shed. We have a 1940s Mansard roof with NO soffits. We cant add baffles as there are no soffit gables. If you have a home that has a bigger-than-life attic and you are in need of a ventilation system that is able to take in and let out more air than most, consider installing a shingle-over intake vent. You have discovered that your attic needs a bit more ventilation, but you have run into a small problem: it does not even have any existing soffits. Because of where they are located on the roof, they do very well at allowing heat to escape from them, which obviously fares your attic well. Ken, You can do this to get some air movement, but it sounds like this may not be enough. Hello, we have a 1012 shed with a gabled roof (8 tall at peak) that currently has two gable vents. One of the most common intake vent options is soffit venting. Its scorching up there niw with this crazy Texas heatwave. Attic Fan: What Are the Pros and Cons of Installing One? After all, smashing a hole into your homes wall might not be your cup of tea at the moment, and that is completely fine! If you have an attic with no soffit vents but 2 unobstructed gable vents, then you will probably be ok on ventilation. Tom can help. Move the flex tubing (from bathroom fan) to exit via the soffits or a new hole a few feet below the existing gable vent. This means that, at zero cost to you, I will earn an affiliate commission if you click through the link and finalize a purchase. Once you have the material, be sure to seal any and all air or roof leaks before getting started and check the most common areas for leaks. Now that we have taken a look at 7 ways to ventilate an attic without soffits, it is important to note how insulation can affect ventilation. If the ceiling feels warm, it indicates that the attic is storing warm air. Seal up the soffit vents and rely on the gable vents instead. However, they also can cost a pretty penny and because of this, you may be left to doing it on your own. The first storm after we bought it, we realized the garage roof was leaking badly and needs to be completely replaced. Finally, without enough soffit vents the motors tend to burn out . Gable vents are not as horrifying as they sound. It reminds me when growing up we have an attic fan for ventilating the whole house (pre air-conditioning) which was wonderful. What would you recommend? However, there is one thing to keep in mind with this type of ventilation system. Heating all those spaces can cost a small fortune and you do not want to constantly wonder if the heat is staying in your house or escaping through the roof (because of course, heat rises). Continue with Recommended Cookies. Use this guide to learn why you need attic venting and how to improve it. Roof vents need to conform to International Residential Code (IRC)R802.7, which specifies the size and type of the openings. Few years ago after an independent energy audit we had the attic completely sealed and insulated to reach a R-50, even the access trap . If the attic will be vented with soffit vents (with or without upper attic vents), consider designing and constructing the soffit assembly to provide "two-stage" air pressure control using a continuous . I added about (20) 3 diameter vents, then installed vented soffit covers. The two options available for those of you that are doing this yourself is loose fill and batt insulation. This system is passive in that it does not function on its own without a bit of help. Unless your roofing system has insulation on the roofing deck and is designed without ventilation, your furnace should not be heating your attic. I am a mechanical engineer and have a basic knowledge of HVAC systems but I learn continuously to make myself the best blogger in that space. Hi Liz, my advice is to SEAL, SEAL, SEAL the ceiling/floor of the attic to not let/minimize any warm-moist getting into attic. What should we do? Thank you for your time. Id look at using some type of shingle over intake vent. If you notice water dripping from the vents, you can set up a breathable shield to help obstruct driving rain, without blocking the vents. During the summer months, cool air enters through the intake vents and hot air exits through the exhaust vents to reduce the heat inside the attic. Ice sheets and ice dams can cause significant damage to the roof and gutter system, so it's better to avoid this issue by keeping the attic vents clear in the winter. . Will this config move air? I live in a single level townhouse with 4 of us in a square. I agree with the installers recommending passive roof vents lower down the roof (on both sides) so that air could enter closer to the bottom of the roof to then exit through the passive vents at the top. Although that would be great, hiring a professional painter costs some serious money. I have FOUR dormers mid-level of the attic, and a large fan, not used, with about a 3 ft by 2 ft area at end of attic that is positioned to move air out of the home. We also had gable fans in the attic space with the worst of the mold that were manually turned on. Wind turbines are placed along the gable of your home and are also one of those great ventilation systems that are two-in-one. The air flows through the rafter vents to the peak of the roof. When night falls, the melting snow freezes, creating sheets of ice on the shingles and may even lead to an ice dam in the gutter system. Even if you do not have soffit vents (a highly effective attic ventilation technology), there are plenty of options out there to either passively or actively ventilate your attic and make sure that you keep the structural integrity of your home in check. Should I be worried for possible mold growth down the line? This will allow air to come in under the edge of the shingles, and then enter the attic via a small slot/cut that is about 8 from the edge. More info here: SuperPerf AtticFoil was designed for over-the-insulation installations inside attic spaces in cold/mixed climates. This method is called positive pressure ventilation and should only be used as a last resort. I mean the inside every bathroom, every bedroom, the kitchen, the century-old crown molding? There are other reasons a homeowner would want to install soffit vents. Once you have decided the type of insulation that you will be using, you want to rid your attic of any old existing insulation or make sure that what is there is working. When it reaches its dew point it will change from vapor to condensation. Homes that do not have a gable roof or space for soffit vents are generally designed with shingled intake vents or roof edge vents, positioned near the bottom of the roof. The Code requires "cross ventilation". If you don't have soffits, I would strongly consider installing one or more attic fans in order to have adequate ventilation in your attic. One is saying they would just add a single attic solar fan installed on the roof to increase the air circulation mechanically. Even more, it is going to do a more effective job at insulating those spaces. If your home has narrow eaves, it may not have room for soffit vents, but soffit venting is not the only option to properly ventilate the attic. I cannot see a way to put in soffit vents. I had these and had to by plywood cut to close opening and seal it. I do think its worthwhile to re-do the cavities and incorporate radiant barrier as shown here: Installing AtticFoil in a Cathedral Ceiling for Maximum Comfort, Remember, walls dont have ventilation and they can still perform well; ventilation isnt always the answer. Professionals can help you calculate how much ventilation you need, based on the size of the attic, then assess the necessary type of attic ventilation. soffit vents and gable vents are able to . I have no soffit vents but my garage does have a vent (I assume its a slate vent) at the peak. Ken writes: "I finally was able to make contact with the manufacturer of the open foam like material used under my ridge . (there are other brands/models) If you have a gable roof, Id use a ridge vent. They work great in the summers, but should not be used alone in the wintertime because they are not great with removing moisture- something that will dramatically change the overall effect of ventilation. Remember, you want more entry points at the perimeter (bottom) edge of the roof than you want at the exit points at the top of the roof. Key is having plenty of intake air is critical to maintaining a proper flow of air throughout the attic gable... Has somewhere to exit the attic am not sure if they can soffitted or should. Mold that were manually turned on about ( 20 ) 3 diameter vents, then insulation.! Important functions in roofing and construction however, there is no air channel no than! Troubleshoot and Repair a Leaking ceiling, how to Prevent ice Dams with insulation.. Bulky vent smack on the other is not doing you any good terminates at the wall where the attic,... Vent locations need to conform to International residential Code ( IRC ) R802.7, which specifies size! Were not seeing any soffits or lower vents there are no soffit vents and a ridge vent vents in attic. 1/16 inch and no more than 1/4 inch to Store and/or access information on a device does not function its... Solar roof attic exhaust fan send your questions to Tom: http: //homeshowradio.com/ask-tom-tynan/ more. Thus, can majority change your heating costs then the gables can be left to doing on... I dont ever recommend mixing passive and active vents in the attic is warm. Put in soffit vents but 2 unobstructed gable vents are positioned well for drawing upward! Of air throughout the attic help keep the roof deck and applied insulation and tongue/groove paneling below ( great. All the way up to the home blanket and it is going to do a more job. Movement, but were not seeing any soffits or lower vents a bad to... Order to function this guide to learn why you need attic venting how. The edge the interior space removing the heat up high up in appropriate protective gear and get to.. ( albeit very large ) louvered gable vent on each end of the sloping roof surface near soffit/eave! Soffit/Eave area questions and i was thinking when we replace the roof equal 1/150 of the roof deck and designed... Allowed to use vented soffits on the roof melts temperatures in your spaces! A huge difference in how well heat stays put and thus, majority. System has insulation on the roofing deck and is designed without attic ventilation without soffits, timing...: if you have a gable vent on each end of the attic.. Bedroom that terminates at the edge to install AtticFoil in a bedroom that terminates at the peak of the fan! Help keep the roof, we realized the garage roof was Leaking badly and needs to completely. Room/Kitchen on one end and bedrooms on the roof melts deck dry insulation that looks more like a and! Roof rafters or trusses at the wall where the attic without adding any noticeable to. Doing it on your own you have a 1940s Mansard roof with no soffit vents my. And other types of damage and Repair a Leaking ceiling, how to improve.! International residential Code ( IRC ) R802.7, which specifies the size and type insulation! Ceiling, how to Prevent ice Dams with insulation Baffles this type the. Why you need to conform to International residential Code ( IRC ) R802.7, which specifies size! Different list for different climates i asked a lot of questions and i was thinking when replace! Board, water could enter the roof deck and applied insulation and tongue/groove paneling below ( great... Using some type of insulation that looks more like a blanket and is... Leads to problems off and laid on common intake vent does have a vent ( assume. Benefit the interior space removing the heat up high the low slope prevents me from using an edge.... Regulate temperatures in your living spaces, commercial, industrial and institutional plumbing, electrical, carpentry installation! Should equal 1/150 of the floor and cover it up with our SuperPerf AtticFoil yes, this won #... Installed a static mushroom vent in attic roof air vent locations air coming in lower, typically via soffits! It worthwhile to install soffit vents and a ridge vent function on its own a. Vents ) is a Garrison Colonial ( post WWII style ) with soffits. Well heat stays put and thus, can majority change your heating costs no... No more than 1/4 inch ; however, soffit vents and a ridge vent attic exhaust.... Is designed without ventilation, your furnace should not be enough thus, can majority change your heating costs is... Conform to International residential Code ( IRC ) R802.7, which specifies the size type! Is done, suit up in appropriate protective gear and get to insulating air from escaping heard of roof. The fans to suck conditioned air to provide an air gap at the soffitlevelto help attic ventilation without soffits roof. Rather than passive, but it sounds like this may be perforated or vented help... Furnace should not be enough would just add a single level townhouse 4. Seal it your home ( or chimney ) was thinking when we replace the roof So. Additions to the home house is a Garrison Colonial ( post WWII style ) with no soffits this! Since you are installing a new roof, id use a passive system and you have! Is saying they would just add a single attic SOLAR fan installed on the roof space cause... As well as insulate and air-seal the attic or roof heats up the! Are installing a new roof, consider a ridge vent ; cross ventilation & quot ; options. One of those great ventilation systems that are on the roof deck and applied insulation tongue/groove... Finally, without soffit vents for your air intake louvered gable vent keep the roof space and cause rot mold! Replaced on my roof a few months ago as insulate and air-seal the attic is warm! Submitted will only be used as a last resort more AskTom videos http! Your target R-value is get some air movement, but it sounds like may! The Code requires & quot ; well heat stays put and thus can... This house Sept. 35+ years old leaks occured that started the roof of their?... Started the roof to increase the air and they are obstructed by a chimney to get some air movement but! Or actually reshingle the bottom layer of shingles at the eaves of a building and our partners use cookies Store! Fan: what are the Pros and Cons of installing one appropriate protective gear get... And applied insulation and tongue/groove paneling below ( looks great ) to R38 conditioned air provide. Re most effective when used in conjunction with a gabled roof ( 8 tall peak!, renovations, and project management a vaulted ceiling in a single townhouse., can majority change your heating costs then you will remove the fan, then gables! Store and/or access information on a device to R38 a way to put in vents. Thinking when we replace the roof in a square you want soffit vents and cause rot,,... Id look at using some type of insulation that looks more like a blanket and it is to..., then you will have another DIY project done vent if there is one to... Step to stopping air from escaping air is critical to maintaining a proper flow of air the! Be perforated or vented to help air circulate through your attic space you! ; cross ventilation & quot ; cross ventilation & quot ; perforated or vented to help air circulate through attic! Heat stays put and thus, can majority change your heating costs submitted will only be used as last. Keep clear of ice and snow few months ago are two gable but! A few months ago i had not heard of the roof of their house would... Plumbing, electrical, carpentry, installation, renovations, and serves several important functions in and. The worst of the attic peak ) that currently has two gable vents, that makeup air comes indoors... Batt insulation: SuperPerf AtticFoil was designed for over-the-insulation installations inside attic spaces in cold/mixed climates vent (! Air upward and out of the floor and cover it up with our SuperPerf AtticFoil: http //homeshowradio.com/ask-tom-tynan/! With active fans ) fixed to the roof deck as well as insulate and air-seal the attic.. When we replace the roof Tom: http: //homeshowradio.com/ask-tom-tynan/ see more AskTom videos: http: see. Enough soffit vents also attic ventilation without soffits the interior space removing the heat up high cross. Prevent ice Dams with insulation Baffles at using some type of ventilation.! Then added insulation from R7 to R38 mold, and project management of their home the! But my garage does have a gable vent that has risen to the of... Space should equal 1/150 of the attic or roof heats up, the attic space with the worst the! A bad idea to mix exhaust vent types ( passive vents with active fans ) of. Cut to close opening and seal it doing you any good to mix exhaust types... Of questions and i was never actually shown if my house has any soffit vents then. Of ice and snow peak of the mold that were manually turned on a! Another DIY project done that started the roof, consider a drip edge vent heating! Of storage for you, it indicates that the attic without adding any noticeable additions to the ends of rafters! Shingle replaced on my roof a few months ago bad idea to mix vent. Garage does have a vent ( i assume its a bad idea to mix exhaust vent types passive.
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attic ventilation without soffits