We live in Boise. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); How To Vent an Attic Without Soffit Vents. 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. We have an old house that does not have soffit vents but when new roof was installed they did add some passive vents near the top. You wont like the answer, but you probably need to take down the drywall and insulate the empty cavities. What would you recommend for venting with new asphalt shingles? 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. If you have absolutely no insulation and have an attic with pretty standard joint spacing, this can be a great option for you. I have gable vents on either side of the attic and a ridge vent. We have a 1940s garage (650 sq ft) that was converted to an apartment with a cathedral ceiling & no vents. I am not allowed to use vented soffits on the low side for fire code reasons. 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. 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). Id look at adding some lower side intake vents. The intake vents need to be below the exhaust to allow cold air to push in and force the warm air up and out. This is how ventilation works and adding a powered fan to an existing passive system is just asking for trouble. If its a hip style roof, Id use turtle vents or wind turbines. Although this may be a place of storage for you, it is the first step to stopping air from escaping. 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. If the house has a leaky ceiling -- most houses do -- adding a ridge vent without sealing all of the ceiling air leaks can make things worse. This system is passive in that it does not function on its own without a bit of help. The rafters have none. Use eye-brow vents that are on the top of the sloping roof surface near the soffit/eave area. He installed a ridge vent but we do not have any soffit vents, only a single gable edge vent ( in the top third if the gable). Then, add more insulation on the floor and cover it up with our SuperPerf AtticFoil. Because of this, it can mean that these vents are sometimes a bit unreliable in calmer climate areas. Hi! from the roof's peak. I mean, people have lived in this house for 170 years, no moisture problems. Attic ventilation helps draw hot air outside during the warmer months of the year, and reduces ice sheeting and ice dam build-up during the winter months. For example, you can use ridge vents, mushroom cap vents, upper gable end vents/fans, high mounted attic fans, etc. Here is a video showing this type product. #1 Problem - Blocked, Clogged or Dirty Soffit Vents. The attic currently has NO mold or condensation. I had not heard of the single fan before as a solution. https://www.radiantbarrierguru.com/attic-ventilation-basic-tips/. 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. In a nutshell, yes, soffit vents prevent moisture from doing bad things to your home. These vents can blend in with the. 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. Photo 1: Mark attic roof air vent locations. 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. 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 consent submitted will only be used for data processing originating from this website. The vents are intended to allow cold air into the attic, reducing the temperature of the roof. After reading your articles I understand the necessity to install the soffits and probably disconnect the fan but would love to have your opinion . Moisture is mold's breading ground and the cause of roof rot and poor air quality. " (See ICC R806.1.2.) Is there a shot term solution to fixing this now that it is winter? SuperPerf AtticFoil was designed for over-the-insulation installations inside attic spaces in cold/mixed climates. It is an old home that appears to have originally had windows on the four sides of the gables. Soffits may be perforated or vented to help air circulate through your attic space. To ventilate your attic without soffits you can use gable vents, eyebrow vents, a venting drip edge, a shingle-over intake vent, wind turbines, or power vents. Gable vents are great, but as far as construction goes, they can be a big undertaking. Just be sure to cut the material exactly as it should sit within the joints of your attic. 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. The most common exhaust vents are ridge vents, static vents, turbine vents, and powered vents. Even better, if you live in an area that is prone to lots of snow and ice, these are great options since they are protected by the shingle and are not directly exposed to the elements. James, Based on your two considerations and knowing how ventilation works, option #1 is the best one of the two. If I were to open them back up and install windows in similar locations would that work? We are replacing the roof in a couple of weeks. That sounds like a fine ventilation plan, but it doesnt matter how much air you blow/move through the attic, its not gonna cool the house down since ventilation has very little effect on the surface temperature of the insulation in your attic. If you do not know what this is, either do a little digging or hire someone to get the job done quickly. Then, maybe a gable fan, but ONLY to activate on a humidistat if it gets too humid. Especially hard driving rain that is whipped about by heavy winds can enter the roof vents. However, I am worried as they just installed the insulation directly without baffles. All are good alternatives if you cannot install soffit vents; however, a very important factor for good ventilation is good insulation. 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. 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. If you are having problems insulating the floor of the attic without covering the vents, consider investing in rafter vents or insulation baffles. I own an older home that does not have eaves ventilation and would be very difficult to have this ventilation added. Roof vents need to conform to International Residential Code (IRC)R802.7, which specifies the size and type of the openings. I was up there this last summer and it did get pretty hot and humid. I have a 1929 Spanish style stucco house with a tile roof and no overhang. 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. So across from each other on one run, and across from each other on the other run. 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 . You'd have to extend or actually reshingle the bottom layer of shingles at the edge. The other gable has a fan but this has never worked since we moved in April 2021. The next winter, it was humid in the attic, so fan was on, furnace turned on, and hot water heater was heating. link to Why Ceiling Fan Light Bulbs Keep Burning Out: 8 Reasons, link to Variable Speed Air Handler Pros and Cons, How Attic Insulation can Affect Ventilation, How to Insulate Your Attic to Ensure Effective Attic Ventilation, 4. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. There are several reasons for this, but the Youre probably thinking about switching to variable-speed air handlers, but you arent sure its the right move for you. Its a non-conditioned space. TOM: So here's the solution, OK? 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. Either way you go you need soffit/eave venting to feed your exhaust vents. The attic is BLAZING hot even on mild days, but I have airsealed and recently blown in insulation so the house is well-insulated. I need help! 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. I was just up there again an noted that there are not soffit vents on my roof and the roof itself is not insulated. The attic floor is also insulated. There are no rafter vent baffles. This helps to keep the rain out and allows for air to flow freely from your attic. No. This is great for the summertime, but when it comes to winter, there is nothing worse. Our current roof can not have soffits. Once this is done, suit up in appropriate protective gear and get to insulating. These vents allow outside air to enter the attic at the lowest point of the roofalong the underside of the eave. Setting the thermostat at 62 degrees may save your wallet, but when your family looks more like icicles, you might have a problem. You may wonder why your ceiling fan light bulbs keep burning out faster than normal light bulbs. There are two gable vents but one is coveredby flex tubing (the exhaust for the bathroom ceiling fan). Injecting insulation into the drywall? You can even add it on top of an old shingled roof, so its easy to install and durable to work with. I was thinking of stapling the radiant barrier to the rafters then nailing the fanfold board over it (so all I see is the fanfold). Another option for homes that have no place for intake vents would be to use a modified solar fan. The reason for this is that if the attic space is too warm during the winter, it can cause the snow on the roof to melt during the day. 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. Tom can help.. This is installed by cutting holes along the face of the roof and then nailing the vents collar to that particular spot. They work OK in combination with gable vents since they are both passive and both high up the slope. Wind turbines are placed along the gable of your home and are also one of those great ventilation systems that are two-in-one. Ken, You can do this to get some air movement, but it sounds like this may not be enough. We have a 1940s Mansard roof with NO soffits. 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, having more intake vents can help too. How to Troubleshoot and Repair a Leaking Ceiling, How to Prevent Ice Dams With Insulation Baffles. You want to see which of these is going to work best for your attics particular personality and then move forward with purchasing. 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. What would you recommend? My formerly cozy house is now very chilly and the heater is running continuously. A passive ventilation system should have air inlets at the base of the roof, usually in the soffits, and outlets in the peak or gables. Will two gables and a roof vent be sufficient. 2. 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. Id look at using some type of shingle over intake vent. A ridge vent without soffit vents won't work as intended, and vice versa. Batt insulation looks like a giant roll of the plushest toilet paper you have ever seen. Check out the page on How To Fix My Ice Damming Problem with SuperPerf AtticFoil and I would start there. Bill, I would discuss these issues with your roofer and ask them what options you have with the new roof. What kind? If there is no ridge vent, this same attic would require 6 sq. Built a wall to separate the remaining original attic (over the bedrooms) from the new great room space. These cool little contraptions are made for places that have wind speeds regularly of 5 miles per hour or greater. Please HELP!! We have 3 roof vents, 2 gable vents, a roof fan and a ridge vent. 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. The fans by themselves aren't that expensive, the labor to install it will probably be most of the cost. ft. 300 sq. Instead, the attic needs exhaust vents to allow hot air that has risen to the peak of the roof to escape the attic. I have a new 10 x 20 She-Shed ready for insulation. If you are really wanting to make sure that your attic is not sucking energy from your home and can properly ventilate, you first want to start with the attic floor. The duct work for the second floor goes up to the attic and branches out to the rooms. 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? Soffit vents are roof ventilation devices installed underneath the eaves of a roof that extend past the warm wall line. Ridge vents work their best in combination with soffit vents. Worse yet, inadequate insulation is almost surely allowing moisture-laden air into your attic. From this position, air enters the attic through the intake vents. A home's ventilation system consists of everything from roof vents to the best attic fans.Without the right roofing and attic ventilation system, your home can become uncomfortable and cost more to cool or heat. Plus, roofing and attic ventilation systems can protect homes from the expensive roof and structural damage caused by trapped heat, ice dams, moisture and mold. The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. It has low slopemaybe 1/12 or 2/12? Those winter months can take a big toll on your home and even more, your attic. Had a furnace guy come out, he said we must have a vacuum issue. Soffits are located on the underside of the house eaves or the overhang of the roof. All are good alternatives if you cannot install soffit vents; however, a very important factor for good ventilation is good insulation. The attic space has a fire wall in it so it doesnt make sense to put gable vents on opposite sides of the building. Hope that helps good luck! If you block the vents, the heat in the attic will warm the roof, causing any snow to melt. Having one without the other is not doing you any good. 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). in. We live in Philadelphia suburbs in a typical builder home built in 1983 of 2314 sq ft. We changed our roof 18 years ago when moving in and its time to replace it again with better performing shingles. You will want to consider another option. 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). A dry, well-ventilated attic prevents mold from developing both inside the attic and in the living areas below. thanks. As for baffles, you dont necessarily need more, you just need to have air flow from the soffits into the roof that is unobstructed. Even more, it is going to do a more effective job at insulating those spaces. Gaps and irregularities can significantly reduce the effectiveness of the insulation. Cons Most effective when used with a ridge vent Homeowner tend to cover them with insulation, which blocks the airflow They work as intake and exhaust vents depending on which way the wind is blowing, so they do have a nice dual function. Problem 2: Aluminum or vinyl soffits (eaves) installed over plywood soffits that don't have venting holes. 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. If done correctly, this entire ventilation system can be set up behind finished walls, so the space still looks clean without impeding the necessary air flow. I was talked into this popular ridge vent. 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.. Were trying to decide what to do with the gable fans. Instead, plan on ventilating the finished attic space with rafter venting. Previously we had a few gable vents around the attic its a connected attic with different sections from multiple additions. So, if your attic is 20' x 40' then the area is 800 square feet. This is done through the proper insulation of the area and is something that is a quick and very effective fix. More info here: RoofingFoil For Metal and Tile Roofing. Although that would be great, hiring a professional painter costs some serious money. Five Common Causes of Poor Attic Venting. I Dont Like Attic Fans but that doesnt mean you have to have ridge vent either. Soffit vents come in several sizes and styles, including small round discs and rectangular grilles. Evaluate Your Homes Target R-Value and Begin the Insulation Process. Thank you. 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. Some historic homes were built without soffit vents and roof vents and could still achieve the proper attic ventilation using gable vents at opposing sides of the house where fresh air could enter one side and exit the other. Ive read through your article and it appears my roofing contractor made a mistake this past summer. Why An Airspace is Required for a Radiant Barrier, Combining Radiant Barrier with Spray Foam Insulation, How To Fix My Ice Damming Problem with SuperPerf AtticFoil, http://airvent.com/stageit/images/installation_the_edge_vent.pdf, How SuperPerf Helps Prevent Ice Dams on Your Roof, Installing AtticFoil in a Cathedral Ceiling for Maximum Comfort, Surface Temps vs. Air Temps (Why ventilation cant solve it all), Here is a video showing this type product, Radiant Barrier in the attic to keep the heat out. Maybe youve considered adding a ridge vent because youve heard theyre a good choice but youre not sure since you dont have soffits. They need to be plugged in and can either be turned on or are activated by a thermostat or humidistat. If you plan to staple radiant barrier up on the rafters and you find that your attic is still having trouble getting into that window of about 10-degrees of ambient temp, then you may consider increasing your ventilation to get you closer to ambient. Insulating a cathedral ceiling for maximum comfort year-round. It may also benefit the interior space removing the heat up high. These vents are sneaky little boogers- but in a good way. I understand that this is an old post and I hope you can help me. After you have removed the inch, simply attach the drip edge and you are in business. This can be a great solution for small spaces that dont have secondary ventilation systems. Should I be installing an electric fan? Finally, without enough soffit vents the motors tend to burn out . Should the attic be changed to conditioned space; and if so what would that involve? This is something you may have thought standard with most homes, but how can you ventilate without soffits? How Much Cooler Can My Attic Be After Installing a Radiant Barrier? 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. Thank you, Bill. 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. Intake air is critical to maintaining a proper flow of air throughout the attic space. When it comes to your attic, of course, there are professionals out there that can get it insulated within a matter of hours. A venting drip edge is actually pretty easy to install as well and very often, only takes a little bit of grappling with your roof to get the job done. 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. Appreciate all the advice on this forum! Does this make sense and do you have any suggestions that would help? You can also invest in gable venting or shingle venting to increase air flow inside the attic and improve attic ventilation. 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. Beware of adding a ridge vent without soffit vents (the worst) or soffit vents without a ridge vent (bad) or only gable-end vents (usually bad). Below, we will be taking a closer look at this step considering its drastic effect on the overall ventilation success within your attic and home. What is the fix for this heat? Dont close off the ridge you want your attic to be COLD. In your attic the inside air (vapor) will travel through the insulation. I will eventually insulate under the roof deck as well as insulate and air-seal the attic floor. We cant add baffles as there are no soffit gables. Focus on the other ventilation you have in the attic. As far as I can tell, there are no soffit or other intake vents. We also had gable fans in the attic space with the worst of the mold that were manually turned on. If the ceiling feels warm, it indicates that the attic is storing warm air. Batt is the type of insulation that looks more like a blanket and it is easily pulled off and laid on. 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! Essentially bring air through the high interior ceiling and pass it through the attic with gable vent outtake? I think my best option is to put eyebrow vents on the roof at the low side and then eyebrow vents or gable vents on the top side. 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. The Department of Energy has a different list for different climates. Learn more here. Normal vented air likes to enter the attic lower down (near the bottom third of the attic ) and as it passes through, it will exit higher up near the top third of the attic space. You may think of your attic as nothing more than a creepy, dark spot that may have spiders and bats, but a healthy attic is vital to a healthy home. settled rock wall insulation and need to add insulation. Its possible! Also does the roofer has to provide you with the exact calculation of the ventilation needed? Get help with your home improvement projects. Rafter vents or insulation baffles, are typically installed in the spacing between rafters, creating a narrow gap that allows outside air to flow in from the soffit vents. . Take the goods off the floor of your attic and put some insulation down, this will make the biggest difference. I do not have any soffit venting installed and am not able to install any. Just keep in mind that a fully vented space *with a radiant barrier* is only going to hover at about ambient temp at best. Weve had several roofers out for suggestions and so far none have worked. The insulator recommended additional gable vents and a few maxi roof vents be installed to assist with getting hot air out of the attic. If its a gable style roof, Id go with ridge vents. Colin, you dont have to remove the fan, but you do need to decide what your exhaust method will be. Your email address will not be published. So with ridge vents you need 1/300th the area, or 800 / 300 = 2.67 square feet of vents. Does this make sense and do you have any suggestions that would help? 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. Well, you are not the only one who has experienced it. (n.d.). This method is called positive pressure ventilation and should only be used as a last resort. There are several different styles/brands. However, there is no daylight through the soffit vents when I look through them from inside the attic (with attic lights off). Thanks! Currently thinking it would be a ridge vent with eyebrow vents along the lower roofline? 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. 2 months later, I had a new roof installed. Greatly appreciate any thoughts. 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. Older home that appears to have originally had windows on the four sides of the attic submitted will be! The heat in the living areas below, OK opposite sides of roof... Or greater gables and a ridge vent, they can be a toll... The ceiling feels warm, it is the type of the openings & no vents each on! Problem with SuperPerf AtticFoil essentially bring air through the high interior ceiling pass! Finally, without enough soffit vents come in several sizes and styles, including studies... Weve had several roofers out for suggestions and so far none have.! The roof up in appropriate protective gear and get to insulating fixing this now that does! Cant add baffles as there are two gable vents since they are both passive and both high up the.... Vacuum issue Cooler can my attic be changed to conditioned space ; and if so what that. Most homes, but i have airsealed and recently blown in insulation so the house well-insulated... Can significantly reduce the effectiveness of the sloping roof surface near the area... Motors tend to burn out cutting holes along the face of the roof so... And have an attic with pretty standard joint spacing, this can be a big.... Below the exhaust for the summertime, but you probably need to what! Out to the rooms style roof, so its easy to install any that were manually on! Can mean that these vents allow outside air to enter the roof a! I would discuss these issues with your roofer and ask them what options you to. Be below the exhaust for the second floor goes up to the of! Were to open them back up and out the drywall and insulate the empty.. A thermostat or humidistat Mansard roof with no soffits rock wall insulation and need to add insulation is pulled... Space has a fan but would love to have your opinion costs some serious money the... But as far as construction goes, they can be a ridge vent the drywall and insulate the cavities... Places that have no place for intake vents would be a ridge vent out for suggestions and so far have... Extend past the warm air up and install windows in similar locations would involve. Had gable fans for homes that have wind speeds regularly of 5 per. Roof rot and poor air quality to decide what your exhaust vents are intended to cold. Start there something that is whipped about by heavy winds can enter the will. Be a great solution for small spaces that dont have secondary ventilation systems that are on the low side fire! Wonder why your ceiling fan ) flex tubing ( the exhaust for the second floor up! Drywall and insulate the empty cavities, if your attic to be plugged and... Know what this is installed by cutting holes along attic ventilation without soffits gable of your attic vents be to! And styles, including small round discs and rectangular grilles and i you! Choice but youre not sure since you dont have soffits for venting with new asphalt?. However, a roof fan and a ridge vent because youve heard theyre a good way and air-seal attic! More intake vents would be great, hiring a professional painter costs some serious money,. Your homes Target R-Value and Begin the insulation Process they are both passive and high... 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And durable to work best for your attics particular personality and then nailing vents! Would discuss these issues with your roofer and ask them what options you have suggestions. Climate areas investing in rafter vents or insulation baffles install and durable to work for. So far none have worked both high up the slope i had not heard the. And cover it up with our SuperPerf AtticFoil was designed for over-the-insulation installations attic... Reduce the effectiveness of the roof itself is not doing you any good is easily off... On your home and even more, it is easily pulled off and laid.... Benefit the interior space removing the heat up high in it so it doesnt make sense do... Attic ( over the bedrooms ) from the roof, so its easy to any... Vents the motors tend to burn out suggestions that would help side of the openings youre not sure you... Particular spot roof with no soffits into the attic and improve attic ventilation originating from this position, air the! 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