INSULATED CONCRETE RAFT FOUNDATION SYSTEMS

The Design & Construction of Low Energy Buildings

INSULATED CONCRETE RAFT

FOUNDATION SYSTEMS

Committed since 1956 - jackon.com

CONTENTS

Company introduction

Construction of XPS concrete raft foundation

Standards & certification

Installation process

Project experiences


XPS INSULATED CONCRETE RAFT FOUNDATION SYSTEMS

LEARNING AIMS

▪ To enhance understanding on

- Key features of XPS insulated concrete

raft foundation systems for low energy

buildings

- Relevant standards & certification

- Suitability of XPS for below ground

applications

- Sustainability

- Compatibility with various wall structures

- Installation process

JACKON Group

Committed since 1956

One of the leading manufacturers of XPS and EPS in Europe

Sales: € 303 million / 2017

Approx. 800 employees

21 production sites and 7 sales offices in 8 countries

Main Technologies - Extrusion (XPS); Blocks and molded components; Production of EPS raw material


COMPANY

JACKODUR® ATLAS XPS

INSULATION & FORMWORK

SYSTEM

▪ Jackodur® Atlas XPS – Intelligent,

efficient thermal insulation and

formwork system for floor slabs

▪ Covered by ETA

▪ Certified by the German Passive

House Institute

▪ Environmental focus - EPD


COMPANY

JACKODUR® ATLAS – The Insulated Concrete Raft Foundation System


INSULATED CONCRETE RAFT FOUNDATION SYSTEMS

CONSTRUCTION OF XPS INSULATED

CONCRETE RAFT FOUNDATION

▪ Economical interlocking system

▪ Elimination of thermal bridges

▪ Stable compressive strength properties

▪ Moisture resistant

▪ Thermal and mechanical properties remain

consistent

▪ Supplied cut to size to ensure fast

installation

▪ A certified Passive House solution



CONSTRUCTION OF XPS

INSULATED CONCRETE RAFT

FOUNDATION

▪ The inter-connection design

Side elementSurface element

Corner edge element Formwork element



CONSTRUCTION OF XPS INSULATED

CONCRETE RAFT FOUNDATION

▪ Fast installation of formwork & insulation

in one process



STANDARDS & CERTIFICATION

▪ BS EN 12091 - Thermal insulating products for building

applications. Determination of freeze-thaw resistance

▪ BS EN 13164 - Thermal insulation products for buildings. Factory

made products of extruded polystyrene foam (XPS). Specification


made rigid polyurethane foam (PUR) products. Specification


made phenolic foam (PF) products. Specification

▪ BS EN ISO 13370 - Thermal performance of buildings. Heat transfer

via the ground. Calculation methods



STANDARDS & CERTIFICATION

▪ Structural Code – EN1992 (Eurocode 2), BS8100 &

BS5628

▪ The European Technical Assessment (ETA)

▪ Passivhaus

▪ ISO 9001 (Quality management)

▪ ISO 14001 (Environmental management)

▪ ISO 18001 (Occupational health and safety management)

▪ ISO 50001 (Energy management)



HEALTH & SAFETY

▪ Designed in accordance with ISO 18001

▪ Appropriate health and safety management

system

▪ Hazard identification

▪ Risk assessment

▪ Establishment of intervention measures

▪ XPS elements should be stored flat and

protected against direct sunlight

▪ Avoid the use of solvents

▪ Onsite risk management is undemanding



XPS FOR BELOW GROUND

APPLICATIONS

▪ XPS – Extruded polystyrene

▪ EPS – Expanded polystyrene

EPS (expanded

polystyrene)

XPS (extruded

polystyrene)

Cell structure Open gaps between

the individual foam

beads

Closed cell structure

Moisture

absorption under

freeze-thaw

EN 12091

up to 15%

EN 12091

up to 1%

Samples of EPS and XPS when

injected with a coloured dye




APPLICATIONS

▪ Once any insulating material

absorbs water, its thermal

properties deteriorate.

Units EPS XPS

Moisture absorption, under

freeze-thaw EN12091 Up to 15% Up to 1%

Thermal conductivity, λ EN13164 W/mK 0.034 0.034

Thermal conductivity, λ

With 10% moistureEN13165 W/mK 0.051 -

Thermal conductivity, λ

With 1% moistureEN13166 W/mK - 0.035

* If EPS takes in 10% of moisture, its insulation properties

will deteriorate by 50%.




APPLICATIONS

▪ Excellent thermal insulation

Thickness of

surface element

mm

U-value

m2K/W

160 0.15

200 0.13

240 0.11

2800.10




APPLICATIONS

▪ Fire performance

- BS EN 13501-1 Euroclass E

- XPS covered by concrete

poses no risk in fire safety



SUSTAINABILITY - XPS

▪ Consist of 98% air and 2% polystyrene

▪ Energy saving

▪ Non hazardous to health or environment

▪ Can be reused/ recycled

▪ At the end of life cycle 100% incineration

with energy recovery or 100% landfill



COMPARISON: XPS-v-STRIP

FOUNDATIONS

Typical section through a strip

foundation

Typical section through a XPS

insulated foundation system

Foundations

Slab

Insulation

SlabInsulated formwork

The slab

insulation

Datum 0 Datum 0




FOUNDATIONS

▪ Strip foundations

- Thermal bridge created between the slab

and the foundation

- Additional timber shuttering will be

required for both the slab and the

foundation

- The insulation must be cut to size to fit

under the slab, generating waste and

cost

- The timber shuttering must be removed

and disposed of after use.

Thermal analysis




FOUNDATIONS

▪ XPS foundations

- Thermal bridge eliminated

- Insulation and shuttering installed in one

operation

- Insulation and shuttering system is

supplied cut to size, eliminating waste

and saving time

- No timber shuttering required or waste

generatedThermal analysis



With insulated concrete formwork

1. Crushed stone layer e.g. 0/45 or 0/63

2. Levelling layer e.g. gritt 4/8

3. XPS insulated concrete raft foundation

4. DPC - PE film

5. Foundation slab

6. Plasterboard

7. Concrete core

8. Insulated concrete formwork

9. Exterior render

10. Cement-based waterproof coating & dimple sheet

11. Filter gravel 16/32mm

1

2

3

4

5

6

78

9

1011



With cavity wall solution




4. DPC - PE film

5. Foundation slab

6. Masonry

7. Blockwork

8. Insulation

9. XPS cavity tray insulation

10. Reinforced concrete ringbeam

11. XPS insulation shutter


1

2

3

4

5

6

7

8

9

10

1112



With timber work solution




4. DPC - PE film

5. Foundation slab

6. Plasterboard

7. Insulation/installation layer

8. OSB board

9. Insulation

10. MDF board

11. Battens/air space

12. Timber cladding

13. Cement-based waterproof coating & drainage board


3

1

2

4

5

6

7

8

910

11

12

1314

3



With ETICS




4. DPC - PE film

5. Foundation slab

6. Plasterboard

7. Blockwork

8. ETICS

9. XPS insulation board



1

2

3

4

5

6

78

9

1011



With autoclaved aerated concrete (ACC)




4. DPC - PE film

5. Foundation slab

6. Interior plaster

7. Autoclaved aerated concrete (ACC)

8. Exterior plaster

9. Cement-based waterproof coating



1

2

3

4

5

6

78

9

1011



INSTALLATION PROCESS

▪ Site preparation

- Compress base course

- Install drainage pipes

- Create a level granular

sub-base




▪ Installation of XPS raft

foundation systems

- Surface element

- Edge element

- Corner element

- Formwork element




▪ Made-to-measure interlocking system

▪ All parts pre-cut and numbered for

the floor plan to specifications

▪ Delivered to site as a complete

package




▪ Installation drawing provided

▪ Can be implemented for any

geometry




▪ Tools required

▪ No cutting, minimal waste

folding ruler & pencil

cutter

level

handsaw

sabre saw

tape measure 20m

screeding level

pad saw

hot wire cutter

protective gloves




▪ Start with a corner element




▪ Then the side elements




▪ Install the elements in a

bonding pattern (offset

joints)



PROCESS FROM PLANNING TO DELIVERY

▪ 2-3 weeks

Quotation Production

Verification

Drawing

Layout DeliveryOrder



PROJECT TYPES

Nursing home Daycare centre

Single-family homeSports centre



PROJECT TYPES

Office with

production hall

Single-family

home with

curvature

School

Single-family

home with 90°

bay windows



PROJECT REFERENCES

▪ Bungalow

▪ Area – 182m2

▪ XPS thickness: 160mm



PROJECT REFERENCES

▪ Daycare centre

▪ Area: 820m2

▪ XPS thickness: 200mm



LEARNING OUTCOME

▪ Enhanced understanding of

- Key features of XPS insulated concrete

raft foundation systems for low energy

buildings

- Relevant standards & certification

- Suitability of XPS for below ground

applications

- Sustainability

- Compatibility with various wall structures

- Installation process



OTHER CPDS

▪ The Design & Construction

of Low Energy Buildings –

Insulated Concrete Form

(ICF) Systems


THANK YOU FOR YOUR ATTENTION

Q & A

Jackon UK Ltd

Unit 1, 3 Ormside Cl, Hindley Green, Wigan WN2 4HR

Tel: 01204 221089

Email: [email protected]

www.jackon-insulation.co.uk

Documents

INSULATED CONCRETE RAFT FOUNDATION SYSTEMS