NO20220700A1 - Procedure for re-insulating an existing wall - Google Patents

Procedure for re-insulating an existing wall Download PDF

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Publication number
NO20220700A1
NO20220700A1 NO20220700A NO20220700A NO20220700A1 NO 20220700 A1 NO20220700 A1 NO 20220700A1 NO 20220700 A NO20220700 A NO 20220700A NO 20220700 A NO20220700 A NO 20220700A NO 20220700 A1 NO20220700 A1 NO 20220700A1
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NO
Norway
Prior art keywords
wall
plates
insulation
existing wall
attached
Prior art date
Application number
NO20220700A
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Norwegian (no)
Inventor
Ole Gunnar Selvaag
Original Assignee
Ogs Seed As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ogs Seed As filed Critical Ogs Seed As
Priority to NO20220700A priority Critical patent/NO20220700A1/en
Priority to EP23179767.1A priority patent/EP4293169A1/en
Publication of NO20220700A1 publication Critical patent/NO20220700A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762—Exterior insulation of exterior walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78—Heat insulating elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0801—Separate fastening elements
    • E04F13/0803—Separate fastening elements with load-supporting elongated furring elements between wall and covering elements
    • E04F13/081—Separate fastening elements with load-supporting elongated furring elements between wall and covering elements with additional fastening elements between furring elements and covering elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Building Environments (AREA)

Description

Foreliggende oppfinnelse vedrører en fremgangsmåte for etterisolering av yttervegger i vanlig forekommende hus. The present invention relates to a method for re-insulating external walls in commonly found houses.

Etterisolering av småhus, SINTEF akademisk forlag, 2017, gir en omfattende innføring i de forskjellige fremgangsmåter som kan benyttes for etterisolering av de mange veggtyper som har vært benyttet i løpet av de siste hundre år. Boken inneholder imidlertid lite om damptransport gjennom isolasjonen. Post-insulation of single-family houses, SINTEF academic publishing house, 2017, provides a comprehensive introduction to the various methods that can be used for post-insulation of the many wall types that have been used over the past hundred years. However, the book contains little about vapor transport through the insulation.

Damp kan komme inn i en vegg når damptrykket (partialtrykket) i luften inne søker å finne vei ut mot kald side av veggen. Dette kan skje ved diffusjon gjennom indre kledning og folier, og gjennom sprekker og riss i den innvendige overflaten. Denne fuktigheten må så slippes ut i det fri for ikke å skade veggen. Steam can enter a wall when the steam pressure (partial pressure) in the air inside tries to find its way out towards the cold side of the wall. This can happen by diffusion through internal cladding and foils, and through cracks and cracks in the internal surface. This moisture must then be released into the open so as not to damage the wall.

Foreliggende oppfinnelse angår rehabilitering av eksisterende trevegger, etterisolering av vegger og sikring mot fuktskader. Oppfinnelsen er nærmere definert i de påfølgende patentkrav. The present invention relates to the rehabilitation of existing wooden walls, subsequent insulation of walls and protection against moisture damage. The invention is further defined in the subsequent patent claims.

Utvendig panel, plater og eventuell utforing av eksisterende vegg fjernes. Diffusjonsåpen papp kan monteres over den frilagte isolasjonen i den eksisterende veggen slik at denne ikke nedfuktes av nedbør i byggeprosessen. Utforingsstykker monteres på den eksisterende veggen som underlag og justering for en bæring for den nye etterisolasjonen som skal monteres. Disse stykkene virker til å gi veggen størst mulig volum med mineralull, slik at transporten av vanndamp blir mest mulig effektiv og uhindret, og at varmeisolasjonen blir best mulig. Volumet mellom bæringselementene fylles med dampåpen mineralull. Denne beskyttes mot nedbør og fukt med diffusjonsåpen papp. Plater med høyisolerende skumplast festes til bæringen med skiver og skruer. Som endelig finish gis veggen en kledning eller et lag med puss og glassfiberduk. Til sammen gir dette veggen en robust overflate. External panels, plates and any lining of the existing wall are removed. Diffusion-open cardboard can be fitted over the exposed insulation in the existing wall so that it does not become damp from rainfall during the construction process. Lining pieces are mounted on the existing wall as a base and adjustment for a support for the new additional insulation to be installed. These pieces work to give the wall the greatest possible volume with mineral wool, so that the transport of water vapor is as efficient and unhindered as possible, and that the heat insulation is the best possible. The volume between the support elements is filled with vapor-exposed mineral wool. This is protected against precipitation and moisture with diffusion-open cardboard. Plates with highly insulating foam plastic are attached to the support with washers and screws. As a final finish, the wall is given a coating or a layer of plaster and fiberglass cloth. Together, this gives the wall a robust surface.

Denne løsningen gir veggen definerte veier og måter for evakuering av vanndamp som kan komme inn i veggen, under og etter rehabilitering. Oppfinnelsen kan omfatte fire veier, to veier i horisontal retning og to vertikalt. Bæringen, som kan være av tre, gis en avstand fra eksisterende vegg. Stykker av tre tjener til å justere bæringen rett, og til å gi nevnte avstand. For å slippe ut damp ved overkant og underkant vindu, kan vinduet plasseres tilbaketrukket fra den utvendige isolasjonsplaten, for eksempel 20mm. På den måten kan vanndampen gis fri vei fra damputjevningslaget mellom platen og den eksisterende veggen og ut til friluft. De samme åpningene kan anordnes ved grunnmur og tak. På veien ut til friluft vil isolasjonsevnen av den ytre platen sørge for at kondensering av vanndamp ikke skjer mot platen selv på kalde dager. Dette oppnås ved at isolasjonsevnen til veggen , den dampåpne isolasjonen og platen tilpasses hverandre slik at temperaturen på platens innside blir relativt høy store deler av året. This solution gives the wall defined paths and ways for the evacuation of water vapor that can enter the wall, during and after rehabilitation. The invention can include four paths, two paths in the horizontal direction and two vertically. The support, which can be made of wood, is given a distance from the existing wall. Pieces of wood serve to set the bearing straight, and to provide said distance. To release steam at the upper and lower edge of the window, the window can be set back from the outer insulation board, for example 20mm. In this way, the water vapor can be given free passage from the vapor leveling layer between the plate and the existing wall and out into the open air. The same openings can be arranged in the foundation wall and roof. On the way out to the open air, the insulating ability of the outer plate will ensure that condensation of water vapor does not occur against the plate even on cold days. This is achieved by the insulating ability of the wall, the vapor-open insulation and the slab being adapted to each other so that the temperature on the inside of the slab is relatively high for large parts of the year.

Betingelsen for at veggen skal fungere etter forutsetningene er at den eksisterende veggen har en velfungerende diffusjonshindrende folie, papp eller plate under innvendig panel. Mangler diffusjonshindringen, kan en slik monteres på utsiden av den eksisterende veggen. The condition for the wall to function according to the prerequisites is that the existing wall has a well-functioning diffusion-preventing foil, cardboard or plate under the inner panel. If the diffusion barrier is missing, one can be mounted on the outside of the existing wall.

Da må isolasjonen i den eksisterende veggen reduseres eller fjernes. Derved holdes temperaturen høy i den eksisterende treveggen, samtidig som den relative fuktigheten blir holdt lav, og råte unngås. Then the insulation in the existing wall must be reduced or removed. Thereby, the temperature is kept high in the existing wooden wall, while the relative humidity is kept low, and rot is avoided.

Til bedre forståelse av oppfinnelsen skal den beskrives nærmere under henvisning til et utførelseseksempel med støtte i vedføyede tegning. Tegningen viser et vertikalsnitt gjennom en vegg forsynt med en tilleggsisolasjon etter en fremgangsmåte ifølge oppfinnelsen. For a better understanding of the invention, it shall be described in more detail with reference to an embodiment with support in the attached drawing. The drawing shows a vertical section through a wall provided with additional insulation according to a method according to the invention.

Figuren viser en eksisterende vegg 1, for eksempel en bindingsverkvegg, som på innsiden har en gipsplate 2 og en dampsperre 3. Innenfor dampsperren ligger opprinnelig isolasjon 4, for eksempel 10 cm mineralull. Tidligere paneling og vindsperre er blitt fjernet. The figure shows an existing wall 1, for example a half-timbered wall, which on the inside has a plasterboard 2 and a vapor barrier 3. Inside the vapor barrier lies the original insulation 4, for example 10 cm of mineral wool. Previous paneling and windbreak have been removed.

Til veggens bindingsverk (ikke vist) blir det festet avstandsholdere 5, her i form av i vertikalretningen langstrakte treklosser som er skrudd fast i bindingsverket. Klossenes tykkelse tilpasses individuelt slik at deres ytterflate 6 blir liggende i samme vertikalplan, for derved å utjevne eventuelle uregelmessigheter i den eksisterende veggens overflate. Til klossene blir det festet horisontale bæreelementer 7, her i form av rekker av tremateriale. Dampåpent isolasjonsmateriale 8, så som mineralull, blir anbragt i mellomrommene mellom bæreelementene 7 og isolasjonen 4, og en vindsperre 9 eller lignende blir anbragt utenpå isolasjonsmaterialet 7, bl.a. for å holde dette på plass og beskytte det mot vær og vind under det videre arbeid med oppfinnelsen. Spacers 5 are attached to the wall's framework (not shown), here in the form of vertically elongated wooden blocks which are screwed into the framework. The thickness of the bricks is adjusted individually so that their outer surface 6 lies in the same vertical plane, thereby smoothing out any irregularities in the existing wall's surface. Horizontal support elements 7 are attached to the blocks, here in the form of rows of wooden material. Steam exposed insulation material 8, such as mineral wool, is placed in the spaces between the support elements 7 and the insulation 4, and a wind barrier 9 or similar is placed outside the insulation material 7, i.a. to keep this in place and protect it from weather and wind during further work on the invention.

I neste omgang blir plater 10 av høyisoledende materiale, så som PIR, anbragt mot vindsperren 9 og understøttet nedentil av platevinkler 11. Platene har eller får en 9 mm gipsplate 12 på utsiden og fastholdes ved hjelp av lekter 13, som festes til bæreelementene 7 ved hjelp av skruer 14. Lektene danner lufting og feste for en utvendig supanelkledning 15. In the next step, plates 10 of highly insulating material, such as PIR, are placed against the wind barrier 9 and supported below by plate angles 11. The plates have or receive a 9 mm plasterboard 12 on the outside and are held in place by means of laths 13, which are attached to the support elements 7 by with the help of screws 14. The laths form ventilation and fixing for an external supanel cladding 15.

Det vil forstås at oppfinnelsen ikke er begrenset til det ovenfor beskrevne utførelseseksempel, men kan varieres og modifiseres innenfor handlingene angitt i de følgende patentkrav og ekvivalenter av disse. It will be understood that the invention is not limited to the embodiment described above, but can be varied and modified within the actions indicated in the following patent claims and their equivalents.

Claims (7)

PATENTKRAVPATENT CLAIMS 1. Fremgangsmåte for etterisolering av eksisterende vegg (1), hvilken fremgangsmåte omfatter følgende trinn:1. Procedure for re-insulating an existing wall (1), which procedure includes the following steps: eventuell kledning og vindsperre på veggen (1) fjernes;any cladding and wind barrier on the wall (1) is removed; avstandsholdere (5) festes til veggen (1) med forutbestemte mellomrom, idet tykkelsen av avstandsholderne søkes tilpasset slik at deres ytterflate (6) blir liggende i samme vertikalplan;spacers (5) are attached to the wall (1) at predetermined intervals, the thickness of the spacers being adapted so that their outer surface (6) lies in the same vertical plane; horisontale rekker (7) festes til avstandsholderne (5) med innbyrdes vertikal avstand; mellomrommene dannet mellom rekkene (7) og veggen (1) fylles med en dampåpen isolasjon (8); oghorizontal rows (7) are attached to the spacers (5) with a mutual vertical distance; the spaces formed between the rows (7) and the wall (1) are filled with a vapor-permeable insulation (8); and plater (10) av høyisolerende materiale anbringes mot rekkene (7) og festes til disse, idet isolasjonsevnen til veggen (1), den dampåpne isolasjonen (8) og platene (10) tilpasses hverandre slik at kondensasjon av eventuell tilstedeværende vanndamp mot platenes unngås på kalde dager.plates (10) of highly insulating material are placed against the rows (7) and attached to them, the insulating ability of the wall (1), the vapor-open insulation (8) and the plates (10) being adapted to each other so that condensation of any water vapor present on the plates is avoided on cold days. 2. Fremgangsmåte ifølge krav 1,2. Method according to claim 1, hvor den dampåpne isolasjonen (8) luftes ved gulv og tak samt fortrinnsvis over og under vinduer.where the vapor-open insulation (8) is ventilated at the floor and ceiling and preferably above and below windows. 3. Fremgangsmåte ifølge et foregående krav,3. Method according to a preceding claim, hvor platene (10) på utsiden forsynes med lekter (13) for lufting og feste av en ytre kledning (15), idet lektene festes med skruer (14) som rager gjennom platene (10) og inn i bæreelementene (7).where the plates (10) on the outside are provided with laths (13) for ventilation and fastening of an outer cladding (15), the laths being attached with screws (14) that protrude through the plates (10) and into the support elements (7). 4. Fremgangsmåte ifølge et foregående krav,4. Method according to a preceding claim, hvor platene (10) på utsiden blir forsynt med en gipsplate, fortrinnsvis 9 mm tykk.where the plates (10) on the outside are provided with a plasterboard, preferably 9 mm thick. 5. Fremgangsmåte ifølge et foregående krav,5. Method according to a preceding claim, hvor isolasjonsmaterialet i platene er PIR.where the insulation material in the plates is PIR. 6. Fremgangsmåte ifølge et foregående krav,6. Method according to a preceding claim, hvor det i tilfelle av manglende diffusjonshindring på innsiden av den eksisterende vegg (1), blir en diffusjonshindring montert på utsiden av den eksisterende vegg (1) etter at eventuell isolasjon i den eksisterende vegg er redusert eller fjernet.where in the case of a lack of diffusion barrier on the inside of the existing wall (1), a diffusion barrier is mounted on the outside of the existing wall (1) after any insulation in the existing wall has been reduced or removed. 7. Fremgangsmåte ifølge et foregående krav, hvor vinduer trekkes inn en forutbestemt avstand fra platene (10). 7. Method according to a preceding claim, where windows are retracted a predetermined distance from the plates (10).
NO20220700A 2022-06-17 2022-06-17 Procedure for re-insulating an existing wall NO20220700A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO20220700A NO20220700A1 (en) 2022-06-17 2022-06-17 Procedure for re-insulating an existing wall
EP23179767.1A EP4293169A1 (en) 2022-06-17 2023-06-16 Method for retrofit insulation of a wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20220700A NO20220700A1 (en) 2022-06-17 2022-06-17 Procedure for re-insulating an existing wall

Publications (1)

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NO20220700A1 true NO20220700A1 (en) 2023-12-18

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Application Number Title Priority Date Filing Date
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EP (1) EP4293169A1 (en)
NO (1) NO20220700A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322433A1 (en) * 2002-08-17 2004-02-26 Walter Gutjahr Method for renovating/protecting damp external insulated walls, applying to outside of insulation profiled foil and high tensile grid mesh with primary/external binding plaster layer with air layer connecting to outside atmosphere
NO321257B1 (en) * 2003-01-10 2006-04-10 Selvaag Spinoff As Draining insulation
WO2022075857A1 (en) * 2020-10-08 2022-04-14 Selvaag Gruppen As A prefabricated external wall element

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702578A1 (en) * 2010-01-18 2011-07-29 Flumroc Ag Insulation.
GB2497796A (en) * 2011-12-21 2013-06-26 Hardie James Technology Ltd Thermally Efficient Façade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322433A1 (en) * 2002-08-17 2004-02-26 Walter Gutjahr Method for renovating/protecting damp external insulated walls, applying to outside of insulation profiled foil and high tensile grid mesh with primary/external binding plaster layer with air layer connecting to outside atmosphere
NO321257B1 (en) * 2003-01-10 2006-04-10 Selvaag Spinoff As Draining insulation
WO2022075857A1 (en) * 2020-10-08 2022-04-14 Selvaag Gruppen As A prefabricated external wall element

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Publication number Publication date
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