The Deep Retrofit of a home means carrying out multiple energy upgrades all at once to achieve a BER of A-rating.

This made a ship-lapped, airtight seal at the bottom of the wall, which means the connection remains flexible since the adhesive bonds, but doesn't dry out.

There are significant obstacles to performing a (DER. So the plan to address this is - after we have done the remaining sides of the house - to remove what little overhangs remain on the roof (chainsaw retrofit...). All horizontal and vertical membrane seams were taped with TESCON VANA tape. First wrap the existing occupied house in an airtight and waterproof membrane that is UV resistant (Pro Clima DA). Additionally the trusses above make it impossible to get a continuous air barrier in the attic floor and connect it to the DA on the outside. On the exterior edges of the window bucks, 2x4s on edge were fastened with screws so there would be something solid to nail to when installing the TJI’s at these bucks. In the next step the window openings were cut out of the overlapping membrane. We had recently finished our Foam-Free Deep Energy Retrofit (DER) blogpost and were working on our first set of construction drawings.

It protects the house during construction and provides airtightness and vapor control inboard of the new insulation layer, right where you want it. To create a vented rain screen on top of this reinforced monolithic vapor open house wrap, we nailed 1x3s vertically to the TJIs. The final prices may differ from the prices shown due to specifics of VAT rules. This was done because if the bays are not contained, the cellulose can bleed into the next one, which makes it becomes much harder for our insulators to properly dense pack the cellulose (because it's impossible to count bags per bay for density estimation if they are not contained).

Yet, while the technologies needed in order to improve energy efficiency are readily available, significant progress has not yet been made, and “best practices” for implementing building technologies and renewable energy sources are still relegated to small “niche” applications.Offering essential information on Deep Energy Retrofits, the book offers a valuable asset for architects, public authorities, project developers, and engineers alike. Then - Create an Account, RFT 18-19C - Deep Energy Retrofit-255 Riverside Drive East, Windsor, ON. This loop in the frame corner ensures the tape is properly connected all the way into the window buck corner. It also fills both the uneven concrete substrate airtightly, and allows seasonal expansion and contraction of wood wall without compromising the airseal. The two of us dug down by hand, cleaned the foundation, added 10” of EPS foam and back-filled it again, all in a day. The first item we tackled was creating an airtight connection to the foundation. Window bucks sticking through DA - before taping buck seams. Pre-applying CONTEGA SL to the window frame. Concurrently with adding the horizontal battens, we added a vertical flying batten between the vertical 1x3s - see concept in detail [to the right]. The holes created by insulating are simply covered with more TESCON VANA tape (475 note -TESCON VANA 150 or VANA 200 are recommended tapes to get sufficient tape adhesion around the installation holes to the membrane - however it is of course also possible to ship-lap several pieces of regular TESCON VANA/INVIS).
JavaScript is currently disabled, this site works much better if you Rowe Hill: Foam-Free Deep Energy Retrofit (DER) by Maine Passive House, Foam-Free Deep Energy Retrofit (DER) blogpost. Below is a detailed description of Jesper's process, written by the the builder himself. The walls are 2x6 spaced 24”OC with ½” sheathing and cedar shingles for siding. Case studies from the U.S.A. and Europe show that that Deep Energy Retrofit can be achieved with a limited core technologies bundle readily available on the market. The roof is constructed with regular trusses with a 6/12 pitch.

We had recently finished our Foam-Free Deep Energy Retrofit (DER) blogpost and were working on our first set of construction drawings. If you do not have an account, In the next step, all other siding was stripped and we removed the old windows. This way we have a totally tight wall cavity until we can extend the ProClima WRB over the roof, and we can connect the SOLITEX MENTO membrane from the roof to the one on the walls as well (475 note - we recommend the detail above, in which the DA would connect to INTESANA on top of the roof - after that temporary roof underlayment/durable vapor variable airbarrier is installed, the TJI are added to the roof. What does a Deep Retrofit involve? Next, outboard of the cellulose install a waterproof, airtight, and vapor open membrane (Pro Clima SOLITEX Mento Plus). Another important component of the quality assurance process is a procurement phase, during which bidders’ qualifications, their understanding of the scope of work and its requirements, and their previous experience are analyzed. To complete the project we estimate spending an additional $60,000 which will include a ventilation system and a new roof. Cost of deep-energy retrofits, of course, is a huge challenge. OSB boards that would extend exactly 9.5" past the DA were nailed to the inside of the rough window openings. View Comments. We hope to maintain the use of our wood stove which currently covers 95% of our annual heat demand, but we’re ready to install a mini split if the wood stove turns out to be impractical. We live in ski country and the Vana tape is so reliable and has such great adhesive quality that it’s our favorite tool to repair rips and holes in ski clothes, which constantly gets wet and dry, but the tape never gives up. But after doing the first wall, we decided the next step would be to do the remaining three walls all at once, mostly because the sheetrock dust settles everywhere, which is problematic, especially in an occupied house with an open design. Please review prior to ordering. Later we spray-foamed the gap between the windows and the RO with low expanding foam. Additionally the OSB window bucks were air-sealed to the DA barrier by taping these inside corners with TESCON Profil BEFORE the TJIs were installed (this is a very important airsealing sequencing step, as otherwise TJIs would be in the way of properly taping that seam). © MERX - All rights reserved. Also, requirements to building envelope-related technologies (e.g., insulation levels, windows, vapor and water barriers, and requirements for building airtightness) depend on specific climate conditions. This Guide provides best practice examples of how to apply these technologies in different construction situations.High levels of energy use reduction using core technology bundles along with improvements in indoor climate and thermal comfort can be only achieved when a Deep Energy Retrofit adopts a quality assurance process. The biggest problem right now is that the attic space is not properly airsealed. Tender documents can be found at www.wechc.com We taped this shelf to the DA, taped seams, and finally taped the exterior WRB to this plywood as well. We primarily stapled the membrane under the overlaps - and any staples we needed in the field around windows and corners, were also taped so they were waterproof and air-sealed (475 note - See instructions on the right, click for PDF). The house was built in 2000 (yes wooden windows don’t last more than 13 years in harsh conditions). On the sides and top, extension jams were installed. This would have made the same hidden zero clearance connection. This made the occupied house weather-tight while the windows were missing. ...you'll find more products in the shopping cart. 4 Comments . We have a dedicated site for USA, Authors: In addition to design, construction, commissioning, and post-occupancy phases of the quality assurance process, the Guide emphasizes the importance of clearly and concisely formulating and documenting the Owner’s goals, expectations, and requirements for the renovated building during development of the statement of work. The DA weather resistant barrier was installed right over the window openings. The plan is to make the attic space part of the conditioned space as the last step in the project. It’s built on frost walls with a slab that has 2” of XPS foam below the slab. (gross), © 2020 Springer Nature Switzerland AG. Before we installed the windows we taped the inside of the double-sided CONTEGA SL tape to the inside edges of the window frames. Offers extensive information on Deep Energy Retrofits to buildings, Provides guidelines for engineers, public authorities, project developers, and architects alike, Shares in-depth insights into best practices from Europe, ebooks can be used on all reading devices. We then dug down to the footers on the hottest day of the year (94F° on the south side of the house) 4' down, 24’ across. Partition walls on the inside are obvious leaks that we cannot address while we live there.