Sentences with phrase «airtightness in»

The Pro Clima system takes care of airtightness in the roof build - up, which was a challenge because of the complex roof structure

The primary reason for requiring airtightness in buildings has nothing to do with energy efficiency or occupant comfort, writes Helen Brown, head of building physics at Encraft — it's for the protection of the building fabric.

Not exact matches

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.

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.

In a range of naturally ventilated homes with airtightness ranging from 5 to 20 ach @ 50Pa, winter air exchange rates were estimated to vary between 0.2 and 0.7 ach — and the ventilation rate was not closely related to airtightness, which casts doubt on the long standing assumption that infiltration can be seen as part of the ventilation strategy.2

Specially constructed airtight ply boxes were installed to receive the new windows, and also allow for preliminary airtightness testing to more accurately reveal air leakages elsewhere in the house

Achieving passive house airtightness is a huge challenge for any retrofit, and even more so when, as in this case, the structure is shared with neighbouring buildings.

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.

The original external render provided the airtightness layer for the walls, while there is an air barrier in the floor slab too, sealed to the internal plaster.

Airtightness is typically measured in two units: air changes per hour (ACH) and air permeability (m3 / hr / m2).

Make it Tight: Building Enclosure Airtightness Training In this 4 hour comprehensive introduction to building airtightness and air sealing, attendees will gain detailed knowledge about theory, details, strategies, and practical applications of building enclosure Airtightness Training In this 4 hour comprehensive introduction to building airtightness and air sealing, attendees will gain detailed knowledge about theory, details, strategies, and practical applications of building enclosure airtightness and air sealing, attendees will gain detailed knowledge about theory, details, strategies, and practical applications of building enclosure air sealing.

In terms of Airtightness, a maximum of 0.6 air changes per hour at 50 Pascals pressure (ACH50), as verified with an onsite pressure test (in both pressurized and depressurized statesIn terms of Airtightness, a maximum of 0.6 air changes per hour at 50 Pascals pressure (ACH50), as verified with an onsite pressure test (in both pressurized and depressurized statesin both pressurized and depressurized states).

In addition to presenting at conferences, 475 publishes videos, details, writings, and other aids that help industry practitioners better understand the philosophy and practice of building airtightness and high performance.

Following airtightness, 475 focuses on related components such as high - efficiency ventilation by Lunos, ecological insulation by GUTEX and FOAMGLAS, triple - pane roof openings by LAMILUX and FAKRO, and Passive House energy balance software by the Passive House Institute — all complementary and essential elements in making high - performance buildings.

In order to boost the team's airtightness expertise, McPhillips and his project manager, Clive Morrow completed a one - day airtightness course with Ecological Building Systems in Athboy, CoIn order to boost the team's airtightness expertise, McPhillips and his project manager, Clive Morrow completed a one - day airtightness course with Ecological Building Systems in Athboy, Coin Athboy, Co..

In addition to giving sufficient room to incorporate a second storey, constructing a new roof made achieving airtightness considerably easier by allowing the build team to incorporate airtightness measures into the new design.

Although the selected timber frame system includes an internal airtight layer, an additional membrane was applied to the room side of the panels in order to meet the airtightness target.

Test used to determine a home's airtightness: a powerful fan is mounted in an exterior door opening and used to pressurize or depressurize the house.

We achieved passive in the end for airtightness and [in terms of] the levels of insulation used.»

One man who has a rare amount of experience in retrofitting heat pumps — and no commercial involvement in a heat pump company — is Tipperary Energy Agency CEO Paul Kenny, who has overseen the installation of scores of heat pumps into energy upgraded homes in the Tipperary region and beyond under the Superhomes scheme, along with other energy efficiency measures including airtightness, insulation upgrades and the installation of mechanical ventilation systems, combining cost - effective energy efficiency, comfort and indoor air quality.

Putting aside concerns about some of the assumptions in Deap — for instance assuming air permeability of homes without airtightness test results, when the evidence indicates that homes built in the second half of the 20th century may be much leakier than pre-war homes — HPAI's SEAI liaison officer John O'Shaughnessy said: «Deap is the preferred tool of the department and has proven to work on a lot of social and fuel poor energy upgrades in the past.»

In the backstop house, we modelled all the minimum backstop values for insulation, windows, airtightness and renewable energy and used a gas boiler as the heating source.

At first glance that temperature difference between Part L1A and passive house might not seem much, but when you consider that the latter also ensures warmer surfaces (achieved through better U-values in opaque elements as well as windows), greatly reduced thermal bridges and some 20 times better levels of airtightness, the comfort levels provided by the two approaches are, frankly, worlds apart.

In addition, airtightness had to be improved.

It seems that the choice of heating system thus trumps insulation and airtightness levels in terms of compli - ance, and that a leaky building with modest levels of insulation is an ac - ceptable form of construction in 2013.

There's also considerable room for improvement on airtightness levels required in Part L1A, currently standing at 10m3 / hr / m2 compared to a margin - ally better 7m3 / hr / m2 in Ireland.

One of the big contradictions inherent in Irish building practice is that despite ever higher levels of airtightness, we're not matching that with appropriate ventilation standards.

He points out that in any house, regardless of its level of airtightness, you have to get an adequate supply of fresh air in, and you have to extract the stale, contaminated, moisture - laden air.

Carty was so impressed with the first systems he installed in Celbridge, he actually retrofitted MVHR into his own bungalow — a house built 27 years ago without any airtightness measures.

It is essential, however, that the house has been properly designed in PHPP and then well - executed on - site achieving the required levels of airtightness and low thermal bridging.

Higher energy standards during building and airtightness testing are two key factors in achieving better homes across Europe.

It is typically much easier to achieve the required level of airtightness when using a system - builder (whether concrete or timber frame), where most of the construction (including fitting and sealing of windows) is carried out in a controlled factory environment.

One suggests using a new metric for airtightness and the other says, «But look what happens in this scenario where we keep the same volume but change the surface area!»

1 Oscar Baldry getting down to work in the old newsagent's shop; 2 laying Kingspan and Ecotherm insulation in the ground floor of the old shop; 3 first floor metal web joist detailing, with membrane behind the joists for airtightness; 4 ground floor walls feature 50 mm Xtratherm internal insulation; 5 this is followed inside by an Intello vapour control barrier and a further 25 mm Xtratherm; 6 the new timber frame first - floor twin - stud walls and roof rafters are of a fully breathable construction and full - filled with Warmcel cellulose insulation; 7 holes in the timber - frame where the Warmcel insulation was pumped in; 8 a pro clima Intello membrane on the inside of the first - floor walls and roof; 9 and finally, 50 mm Thermafleece (sheep wool) lined service cavity to the interior.

So the gaps around the beams were filled in, while the main airtightness layer was formed by plastering the walls to the outside.

Wall build - up showing Intello airtightness membrane, which was used in places to ensure airtightness, followed outside by a Wetherby external insulation system

Standing on the top of the vault - not budging at all: Happy participants cheering: Everything is harder when you do it at the wrong time - the airtightness paper should have been in before the bale vault was built.

Though the building wasn't designed as a passive house, careful attention to airtightness using Ampack's range of tapes and membranes, with particular attention paid to key junctions such as windows, chased walls and a counterbattened service void in ceilings, leading to an impressive pressure test result of 0.48 ACH.

But they knew they wanted an oak - framed house built with structural insulated panels (or SIPs, a fairly common and logical way of filling in oak - framed walls and roofs), good U-values, airtightness, and heat recovery ventilation.

According to Frank Flynn (pictured above), one of the reasons airtightness and insulation specialists Cooper Insulation were selected was due to the firm's investment in a Wincon unit — a stripped down version of a blower door often described as a «spirit level» for airtightness.

Airtightness: 9 of the 15 houses in phase 2 achieved less than 0.534 ACH at 50 Pa, well below the passive house target.

In 2006, the International Residential Code tightened up the language to require walls to be sealed, and as of 2009, the IECC requires airtightness testing.

On phase two however, the airtightness strategy was exemplary, and delivered results as low as 0.29 ACH — among the best results ever achieved in this country — ably assisted by experienced airtightness contractor Roman Szypura of Clioma House.

In addition, wet plaster provides an ideal airtightness membrane, leaving the consideration of this aspect down to just the critical junctions and the use of a membrane arrangement on the underside of the roof trusses.

1 The Rochestown House flats prior to the refurbishment; 2 aerated concrete blocks were chosen to form new build elements, including a new third storey that allows for more generous apartment sizes; 3 new triple - glazed windows were installed outside the masonry layer so that the external insulation could wrap around them, and help prevent thermal bridging; 4 the airtightness layer was moved to the outside of the structure by taping the joints of the existing concrete panels, then extending that tape up onto the aerated blocks in the new floor; 5 Aerobord platinum EPS external insulation being fitted to the original concrete panel walls; 6 & 7 the new window frames visible here in the external insulation layer, including Rockwool fire breaks; 8 openings for exhaust and supply intakes for the new Zehnder heat recovery ventilation system, seen here prior to being insulated and airtightened; 9 installation of the Bauder bitumen roofing membrane.

In addition, the structural design made things a little more difficult in terms of achieving airtightnesIn addition, the structural design made things a little more difficult in terms of achieving airtightnesin terms of achieving airtightness.

The PHI standard also has an airtightness requirement (≤ 0.6 air changes per hour at 50 Pascals, ACH50) and a comfort requirement based on temperatures in the house.

Real progress can be made in tackling the root causes by focusing on measuring the airtightness of building enclosures and making them airtight.

And the first step in answering how, is by specifically focusing on airtightness.

British architect Elrond Burrell notes in his post, Passivhaus; Comfort, Comfort, Comfort, Energy Efficiency that the standard for airtightness (0.6 air changes per hour) makes the house completely draft - free.