081014 Nbt Pavatex Insulation & Carbon Lock Up

Wood fibre insulation & its characteristics / Olin Bartlomé / 2008

PAVATEX Solutions for Sustainable Building

Wood fibre insulation for walls, roofs & floors

Autumn 2008, Olin Bartlomé


About

Olin Bartlomé

Technical manager NBT

Technical manager/project leader PAVATEX (Switzerland)

Graduated engineer (process management & construction)

Project work & studies in Spain (Erasmus) & New Zealand

Trained carpenter


Table of contents

2. Our environment & PAVATEX fibre boards

1. PAVATEX – Facts about the company

3. Functions & Systems

4. Tested characteristics & values

5. Other sustainable key features & summary


PAVATEX has…

Two plants in Switzerland (Fribourg & Cham)

165 employees

Full, round-the-clock utilisation of production capacity

Revenue in 2007: 98.5 mCHF 45 m£

Key figures on PAVATEX


PAVATEX in Cham

Producing since 1932


PAVATEX in Fribourg

Producing since 1949


PAVATEX SA (Cham)

Production of wood fibreboard

PAVATEX GmbH

Distribution and advice on application techniques in Germany and Austria

PAVATEX SA (Fribourg)

Production of wood fibre and mineral fibreboards

Distribution and advice on application techniques in Switzerland

PAVATEX Benelux BV

Distribution and advice on application techniques in the Benelux countries

PAVATEX Italy

Distribution through partner (Naturalia GmbH)

PAVATEX France SARL)

Distribution and advice on application techniques in France

PAVATEX UK

Distribution through partner (Natural Building Technologies)

PAVATEX distribution


PAVATEX has been manufacturing wood-fibre insulating materials in Switzerland for over 70 years:

PAVATEX’s market share in Switzerland in roofs is estimated at 80 percent

PAVATEX is also the market leader in wood fibreboard insulating materials in:

Germany (market share of approx. 40 %)

Austria (market share of approx. 60 %)

Italy (market share of approx. 50 %)

France & the Benelux countries

UK & Eire

PAVATEX develops the process constantly and introduces annually innovations: e.g. PAVADENTRO in 2006 & PAVACLAY in 2007

Market leader in WF for the building fabric


2012: Will it become the most famous date in history?

Humanity emits say x million tonnes of greenhouse gases

Some of these are absorbed by natural “sinks”, the rest stays in the atmosphere

Over the years these levels build up, causing the well-known warming and other effects

The roughly 50-year time-frame on what the Kyoto protocol is based on e.g. assumes that the climate change caused by it is linear

Our environment


Unfortunately these unruffled prospects have been shattered by increasing evidence that the systems does not behave in a simple linear way:

The system has feedback loops whose general effects is to accelerate climate change and…

release increasing quantities of natural greenhouse gases hitherto locked away in the biosphere

Once these feedback processeshave been activated they wouldprobably impossible to stop

Our environment


Hence the triggering of the feedback effects could take place much sooner than the 50 years

How long have we got before we reach this critical point at present rates of emissions?

Nobody can be sure

Experts views range from “already too late” to just a fewdecades

It wont however hardly cover the timeit takes to do R&D etc.

Our environment


Nevertheless, there might be time for one last effort to stave climate change (phew!):

In 2012 when the Kyoto treaty period ends, the replacement treaty (Kyoto II) would have to be an extremely radical document

It would probably initiate a kind of worldwide decarbonisation that some have called the “Apollo-Gaia Programme”

The significance of “Kyoto II” cannot beoverstated: Nothing would work withoutit (single nation attempts, commercial businesses etc.)

Our environment


2012 is probably the earliest date to get everybody on board an effective programme

Part of the programme would have to be devoted to an enormous

carbon-sequestration program (actively withdraw CO2 from the

atmosphere)

This would allow a longer window for us to act

Our environment


However, technologies for doing this are at present rudimentary

Until they are further developed by scientists and engineers one of the

most efficient ways to withdraw CO2 are forests and its products

Our environment


PAVATEX wood fibre boards:

High quality natural insulating materials

Made with the wet-process

Swiss wood fibreboards


The wet process preserves the bonding agents that occur naturally in the wood

Randomly formed hydrogen bonds between the hydroxyl groups of the cellulose and the hemicelluloses bond the fibres to each other

Together with the mechanical anchoring & sticking of lignin between the wood fibres

No additional bonding agents are required



PAVATEX wood fibre boards:

High quality natural insulating materials

Made with the wet-process

Made from a natural raw material: wood

The source:

Forests are natural carbon sinks

Swiss forests absorb around 1.8 million tonnes of carbon dioxide a year



How big is the source?

Switzerland has more woodland per hectare than any other country in Europe…

… and it has an abundant wood supply:

Around 5 million cubic metres of timber is used each year; around 10 million cubic metres of new wood grows each year

Demand for timber may increaseby 55 %* without any requirement to change forestry policy

* Only trees with > 12 cm chest height diameter are considered

Swiss wood fibreboards & our environment


Is it justified to use wood for insulation?

Only waste wood (fresh softwood in the form of slabs, splintersand chippings) from sawmills near the production locations is used as the raw material

The natural ingredients in the wood (e.g. lignin & resins) are used for bonding

Soft fibreboards are entirely different to chipboards or wood-wool slabs



Carbon footprint of wood & timber*:

Every m3 of spruce locks up 880 kg CO2

Every m3 of wood fibre insulation locks up between 275 & 410 kg

CO2 (depending on type/density)

A timber frame house insulated with wood fibre

locks up ca. 36 t of CO2

A timber roof construction insulated with wood fibre boards locks up

ca . 8.4 t of CO2

* Cradle to site



Carbon foot print of wood & timber

Wood is – like any other plants – on a cradle to grave base carbon neutral:

It releases its CO2 after its life

This is then being taken up by growing trees and other plants again (development & degradation level each other)



Carbon footprint of wood fibre insulation:

But beside the carbon-sequestration that gives us a longer window …

Timber is along with hydropower the most important renewable energy

Hence it serves after its life always as a carbon neutral energy supply

Because PAVATEX wood fibre boards are not mixed with any other products (glue, treatments etc.) they can be used as a carbon neutral energy supply in any wood burner e.g.



Life cycle of wood fibre insulation:

Why not composting?

Composting is possible of course but…

composting also can be see as energy loss


Does physically not exist of course…

Because, even worse, the same amount of energy (heat) as it would produce by using it for heating is actually released straight into the atmosphere!


Life cycle of wood fibre insulation:


Product Green house (GWP)

CO2 eq.

(after 100 a)

Ozone depletionCFC eq.

Acidification

SO2 eq.

Over-fertilisati

onPO4 eq.

Ozone forming potentialEthen eq.

Human toxicity

(pollution to air)

Human toxicity

(Pollution to water)

Ecological toxicity(pollution to water)

Primary energy

Unit [10-2 t t-1] [10-8 t t-1] [10-2 t t-1] [10-4 t t-1] [10-4 t t-1] [10-3 t t-1] [10-6 t t-1] [103 m3 t-1] [MJ m-3]

Isolair -99 14 3.9 2.9 4.9 4.7 2.2 3.6 3120

Insulation boards

-79 0.56 3.8 3.7 3.3 4.5 0.8 2.0 2380


Noise insulation

A feeling of wellbeing in a PAVATEX house

Insulation against summer heatInsulation against the cold

+

+ +

Footfall and sounddampening

Breathability

Relative competitive advantage over conventional insulating materials

Variety of functions

+

=


PAVATHERM:General purpose wood-fibre insulating board

PAVATEX roof products:ISOLAIR & PAVATHERM-PLUS insulating sarking boards. In Germany, for example, there are already over 12 million square metres of them on more than 60,000 roofs

PAVATEX floor productsPAVABOARD, the first market-ready thermal insulating board with highload resistance

PAVATEX wall productsPAVATEX DIFFUTHERM, the first integrated thermal insulation system on a wood-fibre basis to be officially approved by DIBt, has been fitted in around 9,000 properties so far

PAVATEX products for the building fabric


General advantages:

Fully certified products & design

Ecological new build & refurbishment

Driving rain proof construction

Possibility of vapour open constructions/No vapour control layer required

Excellent reduction of repeating & non repeating thermal bridges

Excellent noise dampening

High heat storage capacity

Air tightness

Proven design for roofs, walls & floors


Roof of new building

Membrane ca. 0,5 mm

U-value Decrement delay0,31 W/m2K 2,2 h

Sound dampeningca. 30 dB

PAVATHERM-PLUS 100 mm

U-value Decrement delay0,16 W/m2K 9,0 h

Sound dampeningca. 48 dB

An example:A roof area of 100 m2 costs an additional 1300 £ but the loft is likely to be 3°C cooler in summer at 6 pm & around three times quieter all year round


Roofing material

Membrane

Mineral wool 150 mm

Roofing material

PAVATHERM-PLUS

Mineral wool 150 mm


Walls of new building

Basic options: Cladded or rendered

E.g. onto timber frame




Close-up of wall build up:

Rendered façade onto timber frame

You may have come across the following names/abbreviation

External Thermal Insulation Composite System (ETICS) official name according to EOTA

External Wall Insulation (EWI)


Thermal performance of new build walls

Applies also for Pavaclad

PAVATERM-PLUS & DIFFUTHERM have the same λ of 0.044 W mK-1

Total wall thicknesses: 307, 367 & 407 mm

Proven design for roofs, walls and floors

Insulation onto studs

100 mmDIFFUTHERM

160 mmDIFFUTHERM

200 mmDIFFUTHERM

Insulation between studs

140 mmHemp Batts

140 mmHemp Batts

140 mmHemp Batts

U value [W m2K-1] 0.15 0.12 0.10

Decrement factor 0.27 0.102 0.084

Decrement delay [h] 14.8 18.6 19.3


Manufacturing advantages:

Prefabrication to a grand scale possible (incl. windows, rendering etc.)

Dry construction

Fast: other craftsmen & follow up worker not affected/slowed down

No drying time required: Occupants can move in straight away

No moisture brought into building that has to be dried out by usually using a fair amount of energy etc.)

Building physically good-natured constructions

Because of ease of installation the quality of building is not as much depending on the labourer as it is with other designs

Proven design for roofs, walls and floors


Product characteristics are based on verifiable physical values:

PAVATEX wood-fibre insulating materials are standardized building products BS EN 13171:

PAVATEX products wear therefore the CE-marking

CE-marked products can be sold in all CEN countries without any reservations

PAVATEX wood-fibre insulation materials are subject to constant 3rd party testing

Security & warranty is given that stated valuessuch as thermal conductivity λ, moisture content etc. are adhered

Tested values


Quality of PAVATEX insulating materials & systems is verified by numerous labels & quality marks:

BBA

BRE (BREEAM)

NFB

Natureplus

FSC

CO2-Label

Tested values


Other sustainability key features:

Highly efficient building components (e.g. 1.4 W/m2K for triple-glazing windows)

Air tightness target of < 5 m3/h/m2 @ 50 Pa

Energy efficient light fittings On-site recycling facilities, including

an on-site in-vessel composter Water efficient taps, fittings and

appliances

Sustainable building

One Brighton Year of construction 2007 - 2009


Other sustainability key features:

Significant cycle storage On-site Car-Club On-site food-growing spaces Green walls, brown roofs, sky

gardens and mini allotments Community extranet

Sustainable building

One Brighton Year of construction 2007 - 2009


PAVATEX solutions:

Produced & developed in Switzerland for more than 70 years by the most innovative wood fibre insulation manufacturer

Widely used all over Europe & also in Japan

Boards are made of waste wood & they lock up about 11 tonnes of CO2

per building

Raw material resources are literally infinite & FSC certified

Disposal at the end of life cycle is very easy since it is an unaltered natural product (and not a inseparable composite either)

Can be used as carbon neutral energy source at the end of the live cycle

Physical values are tested by 3rd party & guaranteed, production according to BS EN ETAG 004 for DIFFUTHERM

Summary


PAVATEX solutions:

PAVATEX insulation are certified by natureplus this testifies to excellent natural & ecological compatibly

Products can be used for the whole building fabric: Roof, wall & floor

Products protects exceptional against cold, summer overheating, noise & lead to breathable constructions

All common build ups are possible: Onto masonry, timber studs, steel frame etc. & all common facades can be realized: Cladded, rendered, brick façade etc.

Solutions are A rated according to BREEAM

U value of 0.1 W(m2K)-1 can be easy realized with a 400 mm wall

Summary


Many thanks for your attention

One Brighton

081014 Nbt Pavatex Insulation & Carbon Lock Up

Technology

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