Once poorly understood by the mainstream building industry, airtightness is now increasingly seen as one of the most crucial objectives on any building project. Not only is it vital for energy efficiency, it’s also key for thermal comfort and for protecting a building’s structure from dampness and mould. In this comprehensive guide to airtightness, we look at why it’s so important, how exactly it’s measured, and most importantly, how to achieve it on site.
Charlie Luxton will speak at the first event in Ecological’s Perfect Airtight Seal on 16 October at the National Self Build and Renovation Centre, Swindon, while the London event on 18 October will take place in the Building Centre.
Leading low energy timber frame manufacturer MBC Timber Frame has completed work on another project aiming for the passive house standard.
Ecological Building Systems featured on a recent episode of RTE’s The Great House Revival. The show, which is presented by architect Hugh Wallace, follows homeowners undertaking the arduous task of transforming derelict properties into modern buildings.
Ecological Building Systems have announced the launch of the new pro clima products Tescon Sprimer, Aerosana Viscon and Roflex Solido to the Irish and UK Markets. These new airtightness solutions “expand pro clima’s market leading range of high quality sealing systems for inside and out”.
In the first in a new series of technical articles on some of the key technologies in sustainable building, John Hearne makes the case for wrapping buildings in an external insulation layer, and describes some of the main issues to watch out for.
Ireland’s new build housing market is undergoing a radical transformation in energy performance specifications, analysis by Passive House Plus has revealed — with oil heating all but vanishing from use, leaving gas boilers and heat pumps to dominate the heating market.
In the fifth instalment of her column on designing and building a passive house for her family, Nessa Duggan talks about the importance of getting good advice — on everything from airtight sliding doors down to your choice of timber flooring.
Blowerproof liquid air-tight membrane has been certified by the British Board of Agrément. Blowerproof has been used widely across Europe for many years as a proven and effective method of achieving high levels of airtightness in many different buildings, and on a wide range of substrates.
Despite increasing standards of insulation and airtightness, housing developers face few requirements to provide better ventilation and indoor air quality for new home buyers — beyond knocking extra holes in walls. But as reports of condensation and mould affecting new housing developments continue to surface in both the UK and Ireland, and research indicates many new homes may have poor indoor air quality, are developers finally waking up to the need for properly engineered ventilation systems?
A unique new home in the Forest of Dean, designed by Loyn & Co Architects and nominated for this year’s RIBA Stirling Prize, features the second largest expanse of Internorm’s HS330 large scale glazing system used to date in Europe.
The first airtightness test has taken place at phase three of the Silken Park development at Citywest, which is set to be Ireland’s largest residential passive house scheme. A diagnostic initial blower door test, done when the external envelope was completed on one of the development’s show houses, took place on December 12 and delivered a worldbeating result of 0.16 air changes per hour (ACH), well inside the passive house standard of 0.6 ACH and the best result this magazine has ever noted for a masonry building.
MBC Timber Frame has announced the opening of its new manufacturing and design premises at Quedgeley Court, Gloucester. The company told Passive House Plus that it has the capacity to manufacture 50,000 to 60,000 square metres of passive housing per year at the new facility.
Low energy building and airtightness specialists Partel have warned of the importance of ensuring any flat roof construction is properly designed to prevent interstitial condensation and the accumulation of moisture.
In October 2015, PYC Systems carried out the first of several air tests at the Hilltop project in Richard’s Castle on the Hertfordshire— Shropshire border, Architype’s first small scale residential passive house project. The first blower door test result was 0.59 air changes per hour (ACH), prior to insulating the envelope, which everyone was keen to improve on as it only marginally passed the passive house standard and was prior to fitting services, which are known to increase the risk of air leaks.
This stylish new passive house in Cork City managed to achieve one of the best airtightness results Passive House Plus has ever witnessed using an innovative new Irish-manufactured airtight timber board
Trunk Low Energy Building has announced a brand new venture, Trunk CLT, which provides a specialist structural engineering, fabrication and erection service for any client or architect who desires an inherently low energy cross laminated timber shell solution for their project
Ecological Building Systems are pleased to announce global leaders in innovative airtightness solutions Pro Clima have added a new range of pre-folded airtightness tapes, Tescon Profect to their array of intelligent airtightness solutions.
A new low energy and airtight extension is currently on site at the TLC Nursing Home in Maynooth, Co Kildare.
Leading airtightness and vapour control product manufacturer Ampack’s BBA certification now includes the company’s external systems — Ampatop Protecta, Ampatop Protecta plus, Ampatop Aero and Ampatop Aero plus.
This pioneering upgrade project, completed in 2009, turned a Victorian redbrick in Birmingham into one of the UK’s greenest homes. Along with a much wider ecological agenda, the house employed fabric first principles
of insulation and airtightness, and met passive house design targets at a time when the standard was still in its infancy in the UK.
This house on the coast of County Waterford is built from an insulated concrete formwork shell that delivers an inherently warm and airtight construction, and easily exceeds passive house targets.
Three years ago quantity surveyor Ross Cremin set out from scratch with the goal of self-building a passive house on a site in rural County Longford. Here he tells the story of his project and offers advice for others thinking of building their own passive house.
The University of Nottingham has developed a “novel and easy-to-use test for measuring the airtightness of buildings” in order to help eliminate draughts, improve energy efficiency and reduce heating bills.