airtightness - passivehouseplus.co.uk

Ecological launch range of new airtightness products

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”.

The PH+ guide to external insulation

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.

New homes data reveals extent of Irish low energy revolution

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.

Our passive journey #5: Getting the right advice

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 airtight liquid membrane gets BBA certified

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.

New build homes face emerging ventilation crisis

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?

Ireland’s largest passive scheme achieves world-leading airtightness

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 opens new Gloucester factory

MBC Timber Frame Ltd 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. 

Detail out flat roof condensation - Partel

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. 

Cellulose insulation improves airtightness by 30% — PYC Systems

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. 

Trunk Low Energy Building launch new CLT business

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 

Ampack receives new BBA certs

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.

The UK's greenest ever retrofit - 6 years on

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.

New coastal ICF home goes passive at low costs

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.

Longford self-build goes certified passive on a budget

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.

Passive House Plus back issues now freely available online

The digital versions of all previous issues of Passive House Plus are now freely available online.  The magazine is available in entirety in digital form, while many of the feature articles are also now available in HTML form - or in other words as regular web articles. The digital editions use the Issuu pageflipper software, which was chosen for its functionality, simplicity and the ability for readers to interact with magazine content - for instance by sharing links to articles in the magazine via social media or email, or by clicking links to websites contained in articles and adverts.

Daikin heat pumps installed at new low energy Wicklow development

The second phase of a new energy-efficient residential development — boasting A3 rated dwellings — has recently launched in Rathnew, Co Wicklow. Kirvin Hill, built by Broomhall Developments, is a new estate of three-bedroom houses, including both semi-detached units and bungalows.

Mechanical ventilation and IAQ - what the evidence reveals

As previously revealed in Passive House Plus, the evidence appears to indicate that natural ventilation systems don’t adequately ventilate our homes. But does mechanical ventilation perform any better?

Artfully crafted Tyrone passive house

This new Dungannon home shuns conventional passive house design and embraces the late 19th century Arts and Crafts movement.

Airtightness - the sleeping giant of energy efficiency

A building’s airtightness test result isn’t just an indicator of its energy efficiency – it’s an unambiguous indicator of build quality. With a little care in design and on site, airtightness targets that may seem impossibly tough are anything but, argues leading architect and certified passive house designer Simon McGuinness.

The small passive house problem - a solution?

It’s sometimes said to be hard – perhaps too hard – to get a small house to meet the passive house standard. But a small house will have small heating bills, so why is it hard for a small house to be a passive house? Leading passive house consultants Alan Clarke and Nick Grant delve into the passive house software to find out what’s going on.

London upgrade future proofs historic building

The general consensus is that it’s not appropriate to upgrade historic buildings to avant garde energy efficiency levels, creating a sense that conservation of the natural and built environments may be mutually exclusive concerns. Not so, argue Arboreal Architecture’s Harry Paticas and passive house engineer Alan Clarke in an updated version of a paper presented at the 2014 International Passive House Conference, about a highly experimental upgrade to a London townhouse that may point to a sustainable solution.

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