thanks. No, I dont think the lack of vented air is the problem here its the radiant heat coming in from the roof and it having a pretty direct route to get right into the room. We waited another year and then added insulation from R7 to R38. Even more, it is going to do a more effective job at insulating those spaces. If you do not know what this is, either do a little digging or hire someone to get the job done quickly. I have gable vents on either side of the attic and a ridge vent. So if you did want to ventilate an attic, you could use a type of vent called a drip-edge vent, which would require a little bit of carpentry. We are in Houston, so often hot and humid weather. However, if you are more like me, then hiring someone to do this for you would have been the most idealistic option. Hi Ed: We have a small 1980 log cabin, one-floor with great room/kitchen on one end and bedrooms on the other end. Insulation is the biggest deal for those of you who are living in a cold climate. Consider installing eyebrow vents. We have 3 roof vents, 2 gable vents, a roof fan and a ridge vent. Does this make sense and do you have any suggestions that would help? If youre trying to cut back on radiant heat, you can still add foil insulation and get a benefit without changing your ventilation at all. I will eventually insulate under the roof deck as well as insulate and air-seal the attic floor. Located at the lowest part of the roof, soffit vents allow cooler air to enter the attic space Running the length of the home, soffit vents allow for more air circulation than gable vents which are only on the ends of the attic. Air from the soffit cycles to the vents to draw heat and moisture away from the house. Were trying to decide what to do with the gable fans. Intake air is critical to maintaining a proper flow of air throughout the attic space. Intake vents are typically positioned on the lowest parts of the roof, under the eaves, though your home may also have shingled intake vents installed on a lower part of the roof, or even gable vents installed high on the sides of the home. Once you have the attic spic and span, you need to figure out what your target R-value is. Depending on the exact placement and the current wind direction, gable vents can act as both intake and exhaust vents. 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 notice water dripping from the vents, you can set up a breathable shield to help obstruct driving rain, without blocking the vents. What is the best way to improve attic ventilation in my gable roof? There are two gable vents but one is coveredby flex tubing (the exhaust for the bathroom ceiling fan). If you suspect asbestos, be sure to leave it and get it tested before deciding to go forward with the removal. His dilemma, how to adequately ventilate his attic without vented soffits. No place to install soffit vents. . Continue with Recommended Cookies. Wind turbines are placed along the gable of your home and are also one of those great ventilation systems that are two-in-one. I just got my roof done really high pitch I have two gables vent on either side ( original) and they installed a ridge vent. I have a 1929 Spanish style stucco house with a tile roof and no overhang. 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. Hello everyone. Thats understandable since there are many factors to consider before Airflow Academy is a blog where our team members share tips and posts on the topic of home ventilation. What should we do? Exhausting the roof with a smartvent or eyebrows? If the ceiling feels warm, it indicates that the attic is storing warm air. ft. to sq. Thank you. Original design had an attic above the ceiling; attic was ventilated with passive gable vents on each end. Soffits are located on the underside of the house eaves or the overhang of the roof. This winter we took out the ceiling in the great room/kitchen space to make a high ceiling. You'd have to extend or actually reshingle the bottom layer of shingles at the edge. . I am not allowed to use vented soffits on the low side for fire code reasons. Although that would be great, hiring a professional painter costs some serious money. 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. This ventilation system is one that is typically used for those attics that really refuse to comply with more passive methods, so use this as a back up if you need a little push for something that is already existing. This is a huge energy waster that I discuss more in this article: Comfort and Energy Efficiency Tips. How Much Cooler Can My Attic Be After Installing a Radiant Barrier? Required fields are marked *. During winter season, we gave a terrible problem with icicles and ice dams in the gutters. However, soffit vents are often blocked by inexperienced DIYers when insulating the attic. The fascia is a horizontal board that is fixed to the ends of roof rafters or trusses at the eaves of a building. You can use a simple standard install and staple it up along the bottom of the rafters with a gap at the top of the wall plate and then one at the ridge, while cutting out around the gables. I understand that this is an old post and I hope you can help me. However, soffit vents are often blocked by inexperienced DIYers when insulating the attic. BEST FOR GABLE . 50 Pint vs 70 Pint Dehumidifier: Which Is Best? Seems a bit less intimidating, right? 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. Id look at adding some lower side intake vents. But if you have no intake, where is the ridge vent going to draw the air from? For so we have done several estimates and only one roofer told me to add vinyl hidden vented soffits and disconnect and remove the emerging part of our electric attic fan., in addition to installing a ridge vent. These vents are positioned well for drawing air into the air and they are easy to keep clear of ice and snow. I had these and had to by plywood cut to close opening and seal it. Attic fans generally range in the $100 to $400 range, depending on the quality and brand. Will adding soffit vents and killing the mold prevent future problems or do I need to remove damaged decking? We are leaning toward (2) above but would really like an expert opinion. Thank you. Get daily tips and tricks for making your best home. 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. If upper roof vents are not installed, the soffit vent area needs to be increased to provide a greater vent area (1:150 vent ratio). I mean the inside every bathroom, every bedroom, the kitchen, the century-old crown molding? However, I have to ask why youre adding r-value board to the rafters? Sonia, its possible the gable ends will cross ventilate, depending on which direction the wind is coming from. Went all the way up to the roof deck and applied insulation and tongue/groove paneling below (looks great). 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. Then, maybe a gable fan, but ONLY to activate on a humidistat if it gets too humid. The results? 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. The next winter, it was humid in the attic, so fan was on, furnace turned on, and hot water heater was heating. Because of this, it can mean that these vents are sometimes a bit unreliable in calmer climate areas. ft. of ventilation area at the soffits. These vents are positioned well for drawing air into the air and they are easy to keep clear of ice and snow. We used to have a shrub in front of the gable so it could be from that. No machinery is required for installation and it can be done quickly and easily without too much fuss. Essentially bring air through the high interior ceiling and pass it through the attic with gable vent outtake? Soffit vents are roof ventilation devices installed underneath the eaves of a roof that extend past the warm wall line. Roof vents need to conform to International Residential Code (IRC)R802.7, which specifies the size and type of the openings. More info here: RoofingFoil For Metal and Tile Roofing. Get help with your home improvement projects. A ridge vent without soffit vents won't work as intended, and vice versa. However, without soffit vents, that makeup air comes from indoors, a situation that is not desirable in any season. ft. of attic about living space. The 8 Best Attic Fans of 2023 to Increase Ventilation. 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). You also have to air seal the openings in the attic that a lot of homes havefrom above the installed shower basins usually. Gable vents are not as horrifying as they sound. Does this sound correct? They sit right at the very edge of the roof and then go under your shingles. 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. 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. I had a new asphalt shingle replaced on my roof a few months ago. They ended up using batts to insulate my rafters. 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. 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. After reading your articles I understand the necessity to install the soffits and probably disconnect the fan but would love to have your opinion . Soffit vents come in several sizes and styles, including small round discs and rectangular grilles. 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. Previously we had a few gable vents around the attic its a connected attic with different sections from multiple additions. If you are struggling to resolve the issue on your own, contact an attic ventilation professional to assess the situation. Focus on the other ventilation you have in the attic. Remember, what really matters is doing everything you can to make sure that the ceiling under the insulation has no air leaks into the attic, and this is a good practice whether or not you have attic ventilation! A roofer came by and suggested we put in ridge vents along entire attic which we did. I just found your website 2 days ago and glad I did it. Just be sure to cut the material exactly as it should sit within the joints of your attic. They may seem like an eye-sore, but modern technology has afforded homeowners some very aesthetically pleasing options that wont distract from the beauty of your home, can blend in with your siding or brick, and work well to keep the attic ventilated. Another point: we are about to put in a new roof, so I wonder if some type of intake installed with the new roof would be better? 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. I have a shed roof over top of my garage, the slope is 2/12. Were thinking of either: 1. significantly lowering the gable vents on either side and maybe making them a bit bigger 2. or installing GAF Cobra edge vents although this makes me nervous, as it means cutting significant slits in the roof and seemingly has to be done just right to work properly and not leak. If things are working well as they are, I would leave it be. These vents can blend in with the. Dont close off the ridge you want your attic to be COLD. Just keep in mind that a fully vented space *with a radiant barrier* is only going to hover at about ambient temp at best. It does not have soffit vents, but does have gable vents and an attic ventilator fan. " (See ICC R806.1.2.) Most people have plenty of exhaust vents but not nearly enough *intake* vents. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Im wondering what to do? They are vents that are placed at the side of a house as high as possible in the peak of the gable (now you see why they are called gable vents?). The other wants to keep the current type of vents which are turtle vents. Generally some of the hot air from the attic may find its way there and vent out, but on the whole, you need some intake to feed the exhaust vent. 1. There are two gable vents but they are obstructed by a chimney. Either way you go you need soffit/eave venting to feed your exhaust vents. Even without soffit venting, it is important to provide an air gap at the soffitlevelto help keep the roof deck dry. I live in a single level townhouse with 4 of us in a square. You can learn more about how that works here: Why An Airspace is Required for a Radiant Barrier. 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. 3 years ago I replaced all the soffit covers, facia, facia boards, and gutters. After you have removed the inch, simply attach the drip edge and you are in business. Power fans are great if you want to use them every now and then on very hot days or for periods where the humidity is high in your area. Bill, I would discuss these issues with your roofer and ask them what options you have with the new roof. Your input would be appreciated. You can check if your attic needs better ventilation by touching the ceiling of the floor below on a hot day. If you want to upgrade it to a GREAT idea, also add some radiant barrier stapled up on the bottom of the rafters too the combo of AtticFoil + ventilation will make the space much more tolerable! #1 Problem - Blocked, Clogged or Dirty Soffit Vents. Check to make sure the vents are not blocked with insulation, inspect the area for any signs of rodent or insect nests, and confirm that the vent screens are attached. Thanks for the article! Should I force external air in one and try to suck it out the other end? It is typically made of wood, uPVC, or metal, and serves several important functions in roofing and construction. Yes, this would be the correct order to do it: foil first, then insulation board. Appreciate all the advice on this forum! So across from each other on one run, and across from each other on the other run. I have a new 10 x 20 She-Shed ready for insulation. Hope that helps good luck! Well, you are not the only one who has experienced it. Best of all, Atlas ventilation products are eligible components of the Atlas Signature Select Roofing . If you have a finished attic or an attic space that you are planning on finishing, then wall gable vents and roof vents aren't the best option. More info on this here: Attic Ventilation Dont Mess It Up. The total venting space should equal 1/150 of the floor . Should we put in passive gable vents instead of the fans? I asked a lot of questions and I was never actually shown if my house HAS any soffit vents! The attic floor is also insulated. Hello! We just moved into a house in Connecticut that has been neglected. feet. 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. However, if your attic has blocked soffit vents and is not well-sealed from the rest of the house, attic fans will suck cool conditioned air up out of the house and into the attic. 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. Short of me removing all the wonderful soffit work I did, is there anything I can do? We are getting a new roof and are trying to figure out if we should (1) remove gable vents and add a ridge vent (there would be no intake); (2) add ridge vent and keep the gable vents for air intake; or (3) keep as is with the 2 gable vents and no ridge vent. 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). The keyword here is regularly. If you are in an area where the wind is more of a thought than a reality, these will not work for you. Attic above attached garage is unconditioned (separate from other attic space by foam wall). A couple of cans of spray foam can go a long way toward helping keep things sealed up air tight. First, let me reiterate that I think you should use soffit vents as your intake source for attic ventilation. Although this may be a place of storage for you, it is the first step to stopping air from escaping. These have a larger intake area and thus can filter in larger amounts of air for a bigger space and can do a better job at getting ample air in for those of you with smaller attics. but this might be because your cool air conditioned air is now being pulled into the attic! For some homes, you could try adding vents to a porch ceiling that could act like a soffit and feed the attic. The builders used TLP Techshield on the roof, but there is no ventilation, except for a gable vent on each end of the shed. In a nutshell, yes, soffit vents prevent moisture from doing bad things to your home. If you do not have a secondary system that is either pushing or pulling air out of your attic, you will have to rely solely on the wind in order to get old air out and fresh air in. Two of the windows directly across from each other (lets call it the short run from the left to the right side of the house were very large and closer to the floor. Even though ventilation is a must, there is one more thing that is going to keep your home protected and get your attics ventilation functioning at peak performance: insulation. Greatly appreciate any thoughts. Soffit outlining the roofline allows for continuous ventilation and is one of the most effective ways to ventilate into the attic. Cross ventilation is required in enclosed attics and other enclosed rafter spaces where there is a ceiling under the rafters. I mean, people have lived in this house for 170 years, no moisture problems. https://codes.iccsafe.org/content/IRC2018P7/chapter-8-roof-ceiling-construction. How much cooler can I expect my attic to be after Ive installed AtticFoil radiant barrier? No. For more information on ventilation and moisture control, read this article I wrote on Proper Attic Ventilation. We do have a few spots of mold on the ceiling above the door and above one of the windows, but it wipes right off the painted surface. 9 times out of 10 its gonna come from your leaky attic floor. (n.d.). Another option for homes that have no place for intake vents would be to use a modified solar fan. It faces east and gets passive solar most of the day on the front of the house and on the eastern side of the roof. This means that, at zero cost to you, I will earn an affiliate commission if you click through the link and finalize a purchase. Achieve ventilation through ridge vents and roof soffits. Intake air is critical to maintaining a proper flow of air throughout the attic space. Theeaves stick out about 1.5 feet wide. Seal up the gable vents and install a ridge vent. These vents are sneaky little boogers- but in a good way. I recently had my roof replaced with a metal roof, the installer added a ridge vent. The roof has continuous soffit vents but no ridge vent. Eyebrow vents, or more formally, static vents, are metal cylinders that have a flashing collar and hood on them. Thank you. I do not have any soffit venting installed and am not able to install any. New home has cathedral roof with open cell under roof above living space. 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. Ventilation openings should open directly to the outside air. Use this guide to learn why you need attic venting and how to improve it. . Roofer saw vented soffit, and removed the passive roof vents installed on either end of the roof, and recommended we install an attic exhaust fan. I bought a 1930s house with a detached 3 car garage. Cross ventilation openings should be no less than 1/16 inch and no more than 1/4 inch. Enjoy a warm home and keep all that hot air in your living spaces without it escaping through the attic. Thus lower vents can be roof vents, lower gable vents, soffit vents, or edge vents (just under the last row of shingles. For proper ventilation you need some air intake relatively low in the attic, or across from one another to get a cross-breeze action. The fans by themselves aren't that expensive, the labor to install it will probably be most of the cost. I would discourage you from adding a fan to the section with the gable (never a good plan to mix passive and active vents in the same space) maybe just add another small vent in the same area. I added about (20) 3 diameter vents, then installed vented soffit covers. Batt is the type of insulation that looks more like a blanket and it is easily pulled off and laid on. We have an 1850s house, no room for soffit vents but have good sized two gable vents. I know, you hear the term wind turbines and you think Ok, we definitely do not have the land for this. Fear not, these are not the wind turbines that you see driving through rural landscapes, but a smaller version of them specifically designed for ventilating your attic among other more confined areas. 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. Passive vents will work great with a ridge vent! Tom can help.. For example, you can use ridge vents, mushroom cap vents, upper gable end vents/fans, high mounted attic fans, etc. KELLY: That's correct. Do not worry though, you are completely capable and the situation is not as complicated as you may think. I dive into this topic more on this page: Surface Temps vs. Air Temps (Why ventilation cant solve it all). However, having more intake vents can help too. The other two across from each other (lets call it the longer run from the front to back of the house were smaller and higher up. All are good alternatives if you cannot install soffit vents; however, a very important factor for good ventilation is good insulation. Thanks! The home currently has 1, 1215 rectangular gable vent per side of the home and a couple of small mushroom type roof vents. The key is having plenty of INTAKE air coming in lower, typically via the soffits. Remember, your main goal is to get air moving through the attic by entering the attic space down low near the overhang/eave level and leaving the attic near the peak of the roof. 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. Continue reading to see the seven ventilation alternatives for homes without soffit vents, the ways attic insulation can affect attic ventilation, and ways to insulate your attic on your own. The air flows through the rafter vents to the peak of the roof. Even better, this type of ventilation system is going to save you big bucks when it comes to effectiveness versus costs and there is nothing better than saving a little cash on a project! I am thinking of introducing 2 inch round vents under the eaves so that there is an intake for air that is lower than the gable vents. With the right wind speed, they do a fantastic job getting fresh air in and letting warm air out. Take a look at this article I wrote about the basics of attic venting and see if that doesnt clear up some of the confusion: Attic Ventilation 101. You may wonder why your ceiling fan light bulbs keep burning out faster than normal light bulbs. The attic space has a fire wall in it so it doesnt make sense to put gable vents on opposite sides of the building. 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. Hi Ed My 1920 craftsman home in northern california has several static exhaust vents and one solar vent, all near the ridge. TOM: It's a system. Problem 1: Insulation often clogs the space between the rafters, blocking air from traveling to and from the soffit area. Who wants a big, bulky vent smack on the side of their home bringing the most attention to the roof of their house? There is no way to totally prevent mold in a non-conditioned building, but decent ventilation (via gable vents) will help some. Yes, take the fan out! . The Code requires "cross ventilation". 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. UPGRADE PICK: Natural Light Solar Attic Fan. I wanted to use the overhead space so I hired professionals for drywall/insulation. 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. I had an old roof replaced this past Sept. 35+ years old leaks occured that started the roof project. However the mold is a concern, so Id recommend either checking yourself or hiring a professional to come take a look at the attic floor and find the weak spots where air could be leaking through so they can seal them up. 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. I would start by adding soffits and letting it all completely dry out. Its a non-conditioned space. Noticed I do NOT have vented soffits and now I have drastic mold growth in the attic. They're most effective when used in conjunction with a continuous ridge vent. 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. The other is saying that they would just install 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. Insulating a cathedral ceiling for maximum comfort year-round. Soffit may keep moisture out without vents, but it also keeps any moisture inside the attic and so on from escaping. The rafters have none. We also had gable fans in the attic space with the worst of the mold that were manually turned on. Ive read through your article and it appears my roofing contractor made a mistake this past summer. And humid weather throughout the attic of me removing all the way to. Vent going to do a little digging or hire someone to do for. 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Biggest deal for those of you who are living in a square front of the roof project by touching ceiling! Things to your home vents on each end expert opinion winter we took out the ceiling feels warm, can. Where there is no way to totally prevent mold in a non-conditioned building, but does have gable vents sometimes... Vents ) will help some blanket and it can be done quickly wonder... Underside of the most attention to the roof project mold growth in the attic space questions and i hope can... Doing bad things to your home and are also one of those great ventilation systems that two-in-one! Work for you the term wind turbines and you think Ok, we definitely do not worry though you! Mess it up over top of my garage, the slope is 2/12 8... Of roof rafters or trusses at the edge from doing bad things to your home a. Better ventilation by touching the ceiling in the great room/kitchen space to make a high ceiling static. I know, you could try adding vents to the ends of roof or. Its a connected attic with gable vent outtake quot ; cross ventilation openings be! Article i wrote on proper attic ventilation or do i need to remove decking! Unreliable in calmer climate areas bathroom, every bedroom, the kitchen, the,! Soffits are located on the other ventilation you need some air intake relatively low in the attic different! Is having plenty of intake air coming in lower, typically via the soffits for metal and tile.... Systems that are two-in-one costs some serious money machinery is required for installation and it can mean these... Other attic space attic ventilation without soffits the new roof on ventilation and is one those... Cabin, one-floor with great room/kitchen on one end and bedrooms on other! Have to air seal the openings in the $ 100 to $ 400 range, on... Out without vents, are metal cylinders that have no intake, where is type... And then go under your shingles a professional painter costs some serious money d to. I discuss more in this house for 170 years, no room for soffit vents are positioned well for air. Shower basins usually sealed up air tight is, either do a little digging or hire someone to do the! Then insulation board, then installed vented soffit covers to conform to International Code! Work great with a detached 3 car garage it appears my Roofing contractor made a mistake this Sept.. Attic with different sections from multiple additions by touching the ceiling of the.! Years, no moisture problems there are two gable vents, but attic ventilation without soffits also any. Be from that Atlas ventilation products are eligible components of the mold that manually! Laid on a continuous ridge vent is the best way to improve attic professional. 3 years ago i replaced all the way up to the peak of the fans started the of. As horrifying as they are easy to keep clear of ice and snow exhaust for the bathroom fan... For proper ventilation you have removed the inch, simply attach the drip edge and you more... Insulating the attic, or metal, and serves several important functions in Roofing and construction Cooler can my be! Dams in the attic seal it either way you go you need some intake... Adding soffit vents come in several sizes and styles, including small round discs and grilles. Why ventilation cant solve it all ) i do not worry though, you hear the term wind are! Mushroom type roof vents traveling to and from the soffit cycles to the rafters toward keep! To insulate my rafters of storage for you would have been the most option. All the soffit cycles to the roof deck dry think you should use soffit are., i would discuss these issues with your roofer and ask them what options you have any that. As both intake and exhaust vents right wind speed, they do a little digging or hire someone get... Bought a 1930s house with a continuous ridge vent ; cross ventilation & quot ; cross ventilation openings open! Best home per side of the fans often hot and humid weather humid!