US2899821A - Ventilated facade insulation - Google Patents
Ventilated facade insulation Download PDFInfo
- Publication number
- US2899821A US2899821A US2899821DA US2899821A US 2899821 A US2899821 A US 2899821A US 2899821D A US2899821D A US 2899821DA US 2899821 A US2899821 A US 2899821A
- Authority
- US
- United States
- Prior art keywords
- slabs
- light
- weight concrete
- facade insulation
- insulating
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 title description 30
- 239000004567 concrete Substances 0.000 description 52
- 239000011505 plaster Substances 0.000 description 18
- 239000004570 mortar (masonry) Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 210000001503 Joints Anatomy 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000002349 favourable Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Images
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
- E04B1/70—Drying or keeping dry, e.g. by air vents
- E04B1/7069—Drying or keeping dry, e.g. by air vents by ventilating
Definitions
- the facades or external walls insulated in this manner are then usually coated with a layer of plaster so that the light-weight concrete slabs are entirely enclosed.
- the outside of the plaster layer is in turn covered with glass mosaic tiles which are secured in the plaster.
- the light-weight concrete slabs both when the light-weight concrete slabs are secured to the concrete walls either by the adhesion of the concrete mass in the mold or by means of mortar spread on the walls and when the outer layer of plaster is applied the light-weight concrete slabs absorb moisture which causes a reduction of their heat insulating capacity and at the same time is ydetrimental to the adherence of the plaster to the surface of the slabs. If the external layer of plaster is suiciently porous, it is true that the insulating layer may dry out slowly under favorable conditions, but if the plaster layer is dense and practically impermeable or when an external covering of glass mosaic tiles is used, the moisture is compelled to remain in the light-weight concrete slabs.
- the present invention has for its main object to eliminate this disadvantage and to provide a ventilated facade insulation of the above-mentioned type in a simple manner.
- the invention thus relates to a facade insulation comprising light-weight concrete slabs mounted on the external walls of a building and the main feature of this facade insulation according to the invention is that the light-weight concrete slabs included in the facade insulation are provided with grooves in their ⁇ abutting edges so that a network of intercommunicating Ventilating channels is obtained in the insulation, said ventilating channels openly communicating with the outer air at the upper and lower edges of the facade insulation.
- the light-weight concrete slabs are placed on the wall in such a way that said Ventilating channels run in the horizontal and vertical directions, but it is also possible to arrange the light-weight concrete slabs otherwise with the Ventilating channels forming angles other than 90, for example, 45, with the horizontal and the vertical plane, respectively.
- the invention further relates to a light-weight concrete "ice g 2 slab for obtaining a ventilated facade insulation' of the type just dened and the main feature of the said lightweight concrete slab is that it is ⁇ provided with longitudinal grooves in at least two of its meeting edges and preferably in all four of its edges.
- FIG. 1 shows front elevation of a part of a facade insulated with light-weight concrete slabs and before the application of the plaster coating
- Fig. 2 shows a partial vertical section through such a facade-insulated external wall in ready-coated condition.
- 1 is a concrete external wall of a building on the outside of which a plurality of heat-insulating light-weight concrete slabs 2 are rmly secured and covered externally by a layer of plaster 3 and if desired by glass mosaic tiles 4 (Fig. 2).
- the light-weight concrete slabs 2 are provided with longitudinal grooves 5 in all their four edges, the said grooves forming Ventilating channels 6 entirely enclosed by the light-weight concrete material in the joints between the slabs 2.
- the ventilating channels 6 form a network with both horizontal and vertical intercommunicating channel sections and the channel networn communicates with the outer air both at the upper and lower edges of the facade insulation as indicated by the arrows 7, as at the upper and lower edges of window apertures and the like.
- a corresponding ventilation may be obtained when each light-weight concrete slab is only provided with grooves along two meeting edges forming an angle to one another, provided that the light-weight concrete slabs are placed uniformly so that the grooves in the different slabs form the ⁇ same network wherein they all communicate with each other. It has been found desirable to locate the grooves closer to the insides of the light-weight concrete slabs than to their outsides in the finished insulation since 'then the air current through the Ventilating ychannels will be stronger thanks to the increased temperature of the complete wall nearer the interior of the building. Under all circumstances, however, care must be taken that the grooves do not open on the insides of the slabs, otherwise the channels will be choked up when casting the walls or when setting the slabs with mortar on a completed wall unless special precautionary measures are taken.
- a novel Wall construction of a building which includes an inner sustaining wall, a layer of insulating slabs adhesively bonded to the exterior face of said sustaining wall, one entire face of each insulating slab being bonded to a portion of the external surface of said sustaining wall by adhesive mortar, a substantially moisture-impermeable continuous coating adhering to the exterior side of said layer of insulating slabs, said insulating slabs being arranged in adjacent edge-to-edge relationship, each of said insulating slabs having a continuous 3 channel connecting together -the four remaining sides of said insulating slab, saidchannel being isolated -from the aforementioned front and back faces of said insulating slabs, said channels in adjacent slabs thus forming a concealed network of unobstructed intercommunicating 5 Ventilating channels extending throughout said layer of insulating slabs, and said network of unobstructed intercommunicating Ventilating channels opening into the outer air at the upper and lower margins of said insulating layer.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Description
Aug- 18, 1959 s. H. NYCANDER VENTILATED FACADE INSULATION Filed July 8, 1955 5 H. /Vycanaer 73 'W7 1r/y.
United States Patent() VENTILATED FACADE INSULATION Sven Hilding Nycander, Bromma, Sweden, assignor to Internationella Siporex AB, Stockholm, Sweden, a corporation of Sweden Application July 8, 1955, Serial No. 520,887
Claims priority, application Sweden July 15, 1954 1 Claim. (Cl. 72-18) In the erection of buildings, particularly concrete buildings, it is customary to improve the heat insulating properties of the external walls of the building by mounting light-weight concrete slabs on the outside of said walls. These light-weight concrete facing slabs may either be secured to the walls by mortar or other cement when the concrete in the wall is already set or they may be inserted in the molds for forming an external lling layer therein during the casting of the concrete forming the external wall so that they are firmly secured to the concrete.
The facades or external walls insulated in this manner are then usually coated with a layer of plaster so that the light-weight concrete slabs are entirely enclosed. In certain cases the outside of the plaster layer is in turn covered with glass mosaic tiles which are secured in the plaster.
Both when the light-weight concrete slabs are secured to the concrete walls either by the adhesion of the concrete mass in the mold or by means of mortar spread on the walls and when the outer layer of plaster is applied the light-weight concrete slabs absorb moisture which causes a reduction of their heat insulating capacity and at the same time is ydetrimental to the adherence of the plaster to the surface of the slabs. If the external layer of plaster is suiciently porous, it is true that the insulating layer may dry out slowly under favorable conditions, but if the plaster layer is dense and practically impermeable or when an external covering of glass mosaic tiles is used, the moisture is compelled to remain in the light-weight concrete slabs.
The present invention has for its main object to eliminate this disadvantage and to provide a ventilated facade insulation of the above-mentioned type in a simple manner. The invention thus relates to a facade insulation comprising light-weight concrete slabs mounted on the external walls of a building and the main feature of this facade insulation according to the invention is that the light-weight concrete slabs included in the facade insulation are provided with grooves in their `abutting edges so that a network of intercommunicating Ventilating channels is obtained in the insulation, said ventilating channels openly communicating with the outer air at the upper and lower edges of the facade insulation.
Generally, the light-weight concrete slabs are placed on the wall in such a way that said Ventilating channels run in the horizontal and vertical directions, but it is also possible to arrange the light-weight concrete slabs otherwise with the Ventilating channels forming angles other than 90, for example, 45, with the horizontal and the vertical plane, respectively.
The invention further relates to a light-weight concrete "ice g 2 slab for obtaining a ventilated facade insulation' of the type just dened and the main feature of the said lightweight concrete slab is that it is` provided with longitudinal grooves in at least two of its meeting edges and preferably in all four of its edges.
The invention now will be more particularly described with reference to the accompanying drawing showing somewhat dagrammatically and by way of example an external wall of a building having an outside insulation according to the invention.
In the drawing- Fig. 1 shows front elevation of a part of a facade insulated with light-weight concrete slabs and before the application of the plaster coating and Fig. 2 shows a partial vertical section through such a facade-insulated external wall in ready-coated condition.
In both gures, 1 is a concrete external wall of a building on the outside of which a plurality of heat-insulating light-weight concrete slabs 2 are rmly secured and covered externally by a layer of plaster 3 and if desired by glass mosaic tiles 4 (Fig. 2). The light-weight concrete slabs 2 are provided with longitudinal grooves 5 in all their four edges, the said grooves forming Ventilating channels 6 entirely enclosed by the light-weight concrete material in the joints between the slabs 2. The ventilating channels 6 form a network with both horizontal and vertical intercommunicating channel sections and the channel networn communicates with the outer air both at the upper and lower edges of the facade insulation as indicated by the arrows 7, as at the upper and lower edges of window apertures and the like. It is, of course, necessary to prevent water and impurities from penetrating into the channels, which can be effected at the upper edge of the facade insulation by allowing the roof 8, a window-sill or the like to project slightly in the usual manner to hide the upper openings of the channels in the insulation.
A corresponding ventilation may be obtained when each light-weight concrete slab is only provided with grooves along two meeting edges forming an angle to one another, provided that the light-weight concrete slabs are placed uniformly so that the grooves in the different slabs form the `same network wherein they all communicate with each other. It has been found desirable to locate the grooves closer to the insides of the light-weight concrete slabs than to their outsides in the finished insulation since 'then the air current through the Ventilating ychannels will be stronger thanks to the increased temperature of the complete wall nearer the interior of the building. Under all circumstances, however, care must be taken that the grooves do not open on the insides of the slabs, otherwise the channels will be choked up when casting the walls or when setting the slabs with mortar on a completed wall unless special precautionary measures are taken.
What I claim is:
A novel Wall construction of a building, the combination which includes an inner sustaining wall, a layer of insulating slabs adhesively bonded to the exterior face of said sustaining wall, one entire face of each insulating slab being bonded to a portion of the external surface of said sustaining wall by adhesive mortar, a substantially moisture-impermeable continuous coating adhering to the exterior side of said layer of insulating slabs, said insulating slabs being arranged in adjacent edge-to-edge relationship, each of said insulating slabs having a continuous 3 channel connecting together -the four remaining sides of said insulating slab, saidchannel being isolated -from the aforementioned front and back faces of said insulating slabs, said channels in adjacent slabs thus forming a concealed network of unobstructed intercommunicating 5 Ventilating channels extending throughout said layer of insulating slabs, and said network of unobstructed intercommunicating Ventilating channels opening into the outer air at the upper and lower margins of said insulating layer.
738,643 Van Camp Sept. 8, 1903 1,058,949 Diebel Apr. 15, 1913 1,644,996 Grossinger Oct. 1l, 1927 FOREIGN PATENTS 838,949 Germany May 15, 1952
Publications (1)
Publication Number | Publication Date |
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US2899821A true US2899821A (en) | 1959-08-18 |
Family
ID=3448548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US2899821D Expired - Lifetime US2899821A (en) | Ventilated facade insulation |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170857A (en) * | 1976-08-20 | 1979-10-16 | Bauhutte Leitl-Werke Rieger-Anlagentechnik Gmbh | Facade construction |
US4642958A (en) * | 1982-05-03 | 1987-02-17 | Pewitt Bernard B | Ventilated wall and roofing system |
US5218798A (en) * | 1991-09-30 | 1993-06-15 | Blm Group | Exterior insulation facing system |
US20090193746A1 (en) * | 2008-01-29 | 2009-08-06 | Ludowici Roof Tile | 2/3rds width flat interlocking tiles |
USD952189S1 (en) * | 2020-03-06 | 2022-05-17 | Anthony Joseph Martin | Wall |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US738643A (en) * | 1902-08-18 | 1903-09-08 | Benjamin F Van Camp | Building-block. |
US1058949A (en) * | 1912-01-20 | 1913-04-15 | Henry Diebel | Silo. |
US1644996A (en) * | 1925-01-16 | 1927-10-11 | Grossinger Anton | Building construction |
DE838949C (en) * | 1951-03-06 | 1952-05-15 | Franzherm Hanfeld Dipl Ing | Lightweight construction board for permanent formwork in concrete ceilings and for floating screed |
-
0
- US US2899821D patent/US2899821A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US738643A (en) * | 1902-08-18 | 1903-09-08 | Benjamin F Van Camp | Building-block. |
US1058949A (en) * | 1912-01-20 | 1913-04-15 | Henry Diebel | Silo. |
US1644996A (en) * | 1925-01-16 | 1927-10-11 | Grossinger Anton | Building construction |
DE838949C (en) * | 1951-03-06 | 1952-05-15 | Franzherm Hanfeld Dipl Ing | Lightweight construction board for permanent formwork in concrete ceilings and for floating screed |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4170857A (en) * | 1976-08-20 | 1979-10-16 | Bauhutte Leitl-Werke Rieger-Anlagentechnik Gmbh | Facade construction |
US4642958A (en) * | 1982-05-03 | 1987-02-17 | Pewitt Bernard B | Ventilated wall and roofing system |
US5218798A (en) * | 1991-09-30 | 1993-06-15 | Blm Group | Exterior insulation facing system |
US20090193746A1 (en) * | 2008-01-29 | 2009-08-06 | Ludowici Roof Tile | 2/3rds width flat interlocking tiles |
USD952189S1 (en) * | 2020-03-06 | 2022-05-17 | Anthony Joseph Martin | Wall |
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