susref - Construction IT research at VTT

SUSREF
Sustainable Refurbishment of Building
Facades and External Walls
7th framework programme
Theme Environment (including climate change)
Small or medium scale research project
Grant Agreement no. 226858
Date:2012-4-30
Version: Final
1 (57)
Deliverable:
D4.2 - General refurbishment concepts
Introduction, Background, Description of refurbishment concepts and Aspects of
assessment
Authors: Antti Ruuska, Sirje Vares, Tarja Häkkinen
List of contents:
1. Introduction ........................................................................................................................... 1
2. Objectives ............................................................................................................................. 2
3. Background - refurbishment technologies - literature review ................................................. 5
3.1 Introduction .................................................................................................................... 5
3.2 Classification of refurbishment technologies .................................................................. 5
3.2.1 Role of insulation materials ........................................................................................ 6
3.3 Technologies for replacing existing walls ....................................................................... 8
3.4 Technologies for applying external thermal insulation layers ......................................... 8
3.4.1 Thermal bridges in external thermal insulation ........................................................... 8
3.4.2 Air tightness in external thermal insulation ................................................................. 9
3.4.3 Different concepts for applying external thermal insulation layers ............................ 10
3.4.3.1 External thermal insulation composite systems (ETICS) .................................. 10
3.4.3.2 Ventilated façades............................................................................................ 11
3.4.3.3 External thermal insulation panel systems ....................................................... 12
3.4.3.4 Insulating plasters ............................................................................................ 13
3.5 Internal thermal insulation of the envelope ................................................................... 15
3.5.1 Risk of condensation................................................................................................ 15
3.5.2 Thermal bridges and air tightness in internal thermal insulation ............................... 15
3.5.3 Different concepts for applying internal thermal insulation ....................................... 16
3.5.3.1 Plasterdboard laminates................................................................................... 17
3.5.3.2 Insulation boards covered with plasterboard .................................................... 17
3.5.3.3 Insulation boards fixed to wall and plastered directly ........................................ 18
3.5.3.4 Insulation fixed to a freestanding studwork ....................................................... 18
3.6 Cavity insulation .......................................................................................................... 19
3.6.1 Thermal bridges and humidity .................................................................................. 20
3.6.2 Insulating with bulk material ..................................................................................... 21