GB2030892A - Method of insulating building structures and water-activatable cement webs useful for such purpose - Google Patents
Method of insulating building structures and water-activatable cement webs useful for such purpose Download PDFInfo
- Publication number
- GB2030892A GB2030892A GB7931923A GB7931923A GB2030892A GB 2030892 A GB2030892 A GB 2030892A GB 7931923 A GB7931923 A GB 7931923A GB 7931923 A GB7931923 A GB 7931923A GB 2030892 A GB2030892 A GB 2030892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- web
- cement
- insulating material
- building structure
- slab
- 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.)
- Granted
Links
- 239000004568 cement Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000011810 insulating material Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 17
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000002657 fibrous material Substances 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 claims abstract description 3
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 2
- 239000011118 polyvinyl acetate Substances 0.000 claims description 2
- 229920003051 synthetic elastomer Polymers 0.000 claims description 2
- 239000005061 synthetic rubber Substances 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 1
- 229920003086 cellulose ether Polymers 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 17
- 239000004744 fabric Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Natural products CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920006327 polystyrene foam Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
- C04B40/0608—Dry ready-made mixtures, e.g. mortars at which only water or a water solution has to be added before use
- C04B40/0616—Dry ready-made mixtures, e.g. mortars at which only water or a water solution has to be added before use preformed, e.g. bandages
-
- 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
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
-
- 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
- E04F13/14—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 stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
- E04F13/141—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 stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass with an outer layer of concrete
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
A method of insulating a building structure which comprises attaching a laminar insulating material to the building structure and applying over the insulating material a cement web comprising a web of fibrous material or foamed plastics material impregnated with a cementitious composition, the cement web being wetted so that the cement is activated and the web ultimately sets to a hard, reinforced cement membrane which covers the insulating material. The invention also includes a water- activatable cement web for construction purposes which comprises a substrate of fibrous material or foamed plastic material partially impregnated with a cementitious composition which is reactive with water to form a set mass, at least one side of said material being substantially free from cement.
Description
SPECIFICATION
Method of insulating building structures and
water activatable cement webs useful for such
purpose
There is now great emphasis on the need to
improve insulation of existing building structures
and one common process involves introduction of foamed plastics material within the cavity of a
cavity brick wall. In the case of older building
structures, the external walls are usually fabricated from solid brick, stone, etc. and
provision of additional insulation is only possible by attaching this either to the external or to the
internal walls. Addition of insulation to the internal
walls has several disadvantages including
reduction in the size of the rooms, interference with decorations and internal fixtures and fittings.
Internal insulation also means that external walls are heated less and therefore more subject to frost damage.
One known method of applying external insulation to buildings involves mechanically fixing or bonding with adhesives, blocks or slabs of foamed plastics material, such as polystyrene, to the outside of the wall, applying a cement screed over the layer of foamed insulation, followed by a reinforcing membrane and then a further cement screed and finally applying a decorative coating to the finished layer of insulation. This procedure has several disadvantages, one of which is that it is difficult and time consuming to apply a cement screed over the blocks or slabs of foamed insulation and this cement screed frequently cracks and exposes the insulation to the weather.
It is axiomatic that for the insulation to maintain its maximum effect, it should be maintained in a dry condition.
One object of the present invention therefore is to provide an improved method of applying foamed insulation to wall surfaces of buildings.
In accordance with one aspect of the invention there is provided a method of insulating a building structure which comprises attaching a laminar insulating material to the building structure and applying over the insulating material a cement web comprising a web of fibrous material or foamed plastics material impregnated with a cementitious composition, the cement web being wetted so that the cement is activated and the web ultimately sets to a hard, reinforced cement membrane which cover the insulating material.
Normally, the insulating material is in the form of slabs or blocks of foamed plastics material, e.g.
metre square and 25 mm or 40 mm in thickness, which are attached to the building structure in abutting fashion by means of a gap-filling adhesive or mechanical fixing means or a combination of both. A membrane of reinforced cement may be formed over the insulation by applying the uncured cement web to the insulation and activating the cement. Preferably, the cement web is activated by wetting with water or an aqueous solution just prior to application to the insulating material. The wetted cement web
will adhere sufficiently to the insulating material
to form a temporary bond pending developing a
permanent bond by the setting of the cement.
However, an adhesive or adhesion promoter, such
as a polyvinyl ether may be included in the
cementitious composition.
Instead of forming the reinforced membrane
covering over the insulating material after
attaching the insulating material to the building
structure, it is also possible to pre-bond the
cement web to the slab or block of insulating
material and then attach the resulting composite
building element to the structure to be insulated.
Continuity in the reinforced membrane may be ensured by subsequent application in situ of overlapping strips of cement web to the insulating material so as to bridge over the joins between adjacent building elements.
Instead of using a separate adhesive to bond the insulating material to the building structure, the blocks or siabs of insulating material (which
may be in the form of composite building elements as described above) may carry adhesive, e.g. in the form of strips or beads to enable them to be attached to the wall. Such adhesive coating
may be protected with a removable release film during storage and transport.
The cement impregnated web used in the method of the present invention is preferably of the same general character as described in our
British Patent No. 1.504,124. This prior patent describes water activatable tapes comprising a substrate of fibrous or foamed plastics material impregnated with a cement, an organic binder which binds the cement to the substrate while the cement is in its uncured state and a hydrophilic thickener. The purpose of the hydrophilic thickener is to assist the penetration of the water into the tape on activation. In some circumstances, the organic binder can be dispensed with, but preferably the organic binder is an elastomeric polymer such as a natural or synthetic rubber.
While a fully impregnated cement web may be used in the method of the present invention, we have found that substantial advantages are obtained if a partially impregnated tape or web is used. There are two main reasons for this. Firstly, it has been found that if a tape issued which. is fully impregnated with cement, such as is obtained by total immersion of the substrate in a cement slurry as described in our above British
Patent the tape when wetted becomes very heavy and difficult to apply in long lengths to a wall structure. Secondly, the cement impregnated tape does not accept many kinds of decorative coating, particularly high build decorative coatings very readily. We have found that by applying the cement slurry to the web in such a way that only partial impregnation takes place, the above difficulties can be reduced or overcome.Indeed it has been found that decorative surface coatings, including non-aqueous coatings, may be applied to the cement membrane while it is still damp with activating water. This significantly reduces the total installation time for the system.
A water-activable cement web wherein the
cementitious composition is only partially
impregnated into the fibrous or foamed plastics
web so that one surface is substantially free from
cement is believed to constitute a novel material.
According to a further aspect of the present
invention therefore there is provided a water
activatable cement web for construction purposes
which comprises a substrate of fibrous material or foamed plastics material partially impregnated with a cementitious composition which is reactive with water to form a set mass, at least one side of said material being substantially free from cement.
Preferably the web is impregnated from one side only of the web with the composition. Partial impregnation of the web or tape may be achieved
by coating a cement slurry of the kind described in our prior patent 1,504,124 onto only one side of a web of fibrous material or foamed plastics material using a flat bed coating machine, e.g. as described in our co-pending patent application No.
37005/78. The coated web is then dried and results in an impregnated tape or web in which one side has a coating of dry cementitious slurry, while the other is substantially free from cement.
An alternative method of producing a partially impregnated web involves fully impregnating a suitable substrate, e.g. by the dip coating method described in British Patent No. 1,504,124 and iaminating the impregnated web with a second,
unimpregnated web so as to form a composite web in which one face is free from cement. If the two webs are brought together while the impregnated web is still wet, the two webs will stick together and remain bonded on drying without the need for additional adhesive.
A further alternative method of producing a partially impregnated web involves forming the web as a tube or sleeve (e.g. by knitting the web directly in tubular form or sewing the edges of an elongate web together) and impregnating the flattened tube by dip-coating or roller-coating from both sides or by any other convenient method. If the thickness of the fabrics is chosen so that the composition does not penetrate to the interior, the tube can be opened out again by slitting the edge to form a partially impregnated web having one surface uncontaminated with cement.
According to the preferred technique, the partially impregnated web is thoroughly wetted just prior to use and applied with the cement side to the foamed insulation, either by overlapping or butting adjacent strips of material. As an alternative the web may be applied in a dry or partially wetted condition and thoroughly wetted when in position on the insulating material. Very little cement is washed through to the uncoated side of the web and decorative coatings can be applied to the cement impregnated web before the web has dried. This is advantageous since the decorative coating (being substantially water impermeable) will slow down the escape of water from the activated cement composition in the impregnated web, and this will result in improved
curing of the cement.Surprisingly, both water
based and solvent-based decorative coatings can
be applied to the outer surface of the cement
impregnated web before the impregnated web has
dried. Although the fibrous substrate is still
apparently damp, we have successfully applied
chlorinated rubber based paints to a wall
insulation covered with cement impregnated web
immediately after application of the web.
When activating the web, an aqueous solution
may be employed which contains substances
which promote or retard the rate of cure of the
cement.
Instead of producing a factory made laminated cement web, it is also possible to produce
essentially the same kind of structure in situ by
first applying a fully impregnated cement web to
the insulating material and subsequently applying
a partially impregnated cement web, with the
cement side innermost, onto the first web while
the latter is still damp. This procedure has the
disadvantage however that it introduces a further
step.
The cementitious compositions used to
impregnate the webs of fibrous or foamed plastics
material are preferably as described in British
Patent No. 1,504,124. The nature of the fibrous or
foamed plastics material may also be as described
in our earlier Patent. We prefer however to employ
web substrates having a high absorbency and the
preferred substrates are stitch-bonded polyester
or viscose fabrics which are high bulk fabrics
which are produced as a felt and then stitched.
The insulating material is preferably a
polystyrene or polyurethane foam, the most
preferred material being expanded, rigid,
polystyrene foam, such as the material supplied by
Dow Chemical Company under the trade name
"Styrofoam". Other useful insulating materials
include foamed polyethylene, wood wool, glass
fibre wool and mineral wool.
The following Example will illustrate the
preparation of a cement web in accordance with
the invention and the insulation of the wall of a
building in accordance with the method of the
invention.
EXAMPLE
85 parts by weight of Portland cement were dispersed in methyl ethyl acetate with 5 parts by weight of methyl cellulose. One part by weight of nitrile rubber was added to the dispersion to achieve a total solids content of about 75 mass per cent. A web of stitch-bonded polyester fabric about 25 cms wide was fully impregnated with the resulting cementitious composition by drawing the web through a bath filled with the slurry and regulating the thickness of the coating on both sides of the web using a doctor blade set to a gap of 2 mms. Immediately upon leaving the bath, the impregnated web was laminated to a similar but unimpregnated polyester fabric by passing the two lengths of fabric between a pair of rollers. The composite fabric strip was then passed to a drying tunnel, including a solvent recovery plant, and then reeled.
The wall of a small house was insulated with expanded foamed polystyrene sheets using the following technique. Sheets of foamed polystyrene approximately 1 metre square and 25 mms thick were attached to the wall using a heavily-filled polyvinyl acetate adhesive.
Alternatively, a cross-linking adhesive, such as an acrylic based adhesive could be used. Preferred adhesives of this type are styrene-acrylate copolymer adhesives.
The adhesive was applied by coating onto the polystyrene and positioning the sheets in closely abutting fashion so as to completely cover the wall. The cement web, prepared as described above, was thoroughly soaked by immersion in water for a few mintues and applied to the polystyrene sheets with the cement-free side outermost. The strips of cement web were overlapped with the joins extending vertically and a hand-held roller was used to ensure that the strips of cement web were pressed firmly onto the insulation and bonded thereto. A resin based textured surface coating was applied by roller immediately over the cement web to complete the installation.
While the invention has been described with particular reference to the insulation of wall surfaces, it will be appreciated that any parts of building structures can be insulated by the process described above, including particularly roof structures. Also the partially impregnated webs of this invention may be used for purposes other than for securing insulation to building structures, e.g.
for any of the purposes mentioned in British
Patent No. 1,504,124.
Claims (21)
1. A water-activatable cement web for construction purposes which comprise a substrate of fibrous material or foamed plastics material partially impregnated
with a cementitious composition which is reactive with water to form a set mass, at least one side of said material being substantially free from cement.
2. A web according to Claim 1 which comprises a web of fibrous material or foamed plastics material which is impregnated throughout with a cementitious composition and which is laminated to a second web of fibrous or foamed plastics material which is substantially free from cement.
3. A web according to Claim 1 or Claim 2 wherein the cementitious composition includes at least one cement, a binder which binds the cement to the fibrous or foamed plastics material while the web is in its uncured state, and a hydrophilic thickener.
4. A web according to Claim 3 wherein the binder is a natural or synthetic rubber.
5. A web according to Claim 3 or Claim 4 wherein the hdyrophilic thickener is a cellulose ether, polyvinly alcohol or polyvinyl pyrrolidone.
6. A building element which comprises a slab or block of insulating material having a web as claimed in any one of the preceding claims bonded to the surface, so that the side of the web which is substantially free form cement faces outwardly.
7. An element according to Claim 6, wherein the insulating material comprises a foamed styrene or urethane polymer.
8. An element according to Claim 6 of Claim 7 wherein the cement web is cured over substantially the whole of the area in contact with the surface of the block or slab, the web including an edge strip which is uncured and is adapted in use to overlap onto and cover the free edge of an adjoining slab or block.
9. A method of insulating a building structure which comprises attaching a laminar insulating material to the building structure and applying over the insulating material a cement web comprising a web of fibrous material or foamed plastics material, impregnated with a cementitious composition, the cement web being wetted so that the cement is activated and the web ultimately sets to a hard, reinforced cement membrane which covers the insulating material.
1 0. A method according to Claim 9 wherein the cement web is wetted just prior to application to the insulating material.
11. A method according to Claim 9 of Claim 10 wherein the web includes an adhesive or adhesive promoter to assist adhesion of the web to the insulating material.
12. A method according to any one of the preceding Claims wherein the insulating material is attached to the building structure by means of a gap-filling adhesive composition applied to the structure and/or to the insulating material.
1 3. A method according to Claim 12 wherein the adhesive is a filled, polyvinyl acetate or styrene-acrylate copolymer.
14. A method according to any one of Claims 9 to 1 3 wherein the cement web has one surface which is substantially free from cement and is applied to the insulating material so that the cement-free surface faces outwardly from the building structure.
1 5. A method according to any one of Claims 9 to 14 wherein a decorative coating is applied to the outer surface of the cement web.
1 6. A method according to Claim 1 5 when appendant to Claim 14 wherein the decorative coating is applied to the cement web while the latter is still wet.
1 7. A method according to any one of Claims 9 to 16 wherein the cement web is in the form of a tape which is applied so that joins are abutting or overlapping and extend substantially vertically.
18. A modification of the method claimed in any one of Claims 9 to 1 7 wherein the cement web is applied to the insulating material prior to attaching the insulating material to the building structure.
19. A method according to Claim 1 8 wherein the cement web is bonded in a cured condition to slabs or blocks of the insulating material.
20. A method according to Claim 1 9 wherein each slab or blockofinsulating material is left free from cement web along one edge and the opposite edge is provided with a strip of cement web which is uncured and is so dimensioned that when the slab or block is positioned adjacent to a similar slab or block, the strip can be overlapped onto and cover the free edge of the adjoining slab or block.
21. A building structure when insulated by the method claimed in any one of Claims 9 to 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7931923A GB2030892B (en) | 1978-09-15 | 1979-09-14 | Mehtod of insulating building structures and water-activa-table cement webs useful for such purpose |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7837004 | 1978-09-15 | ||
| GB7931923A GB2030892B (en) | 1978-09-15 | 1979-09-14 | Mehtod of insulating building structures and water-activa-table cement webs useful for such purpose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2030892A true GB2030892A (en) | 1980-04-16 |
| GB2030892B GB2030892B (en) | 1982-09-08 |
Family
ID=26268871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7931923A Expired GB2030892B (en) | 1978-09-15 | 1979-09-14 | Mehtod of insulating building structures and water-activa-table cement webs useful for such purpose |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2030892B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118588A (en) * | 1982-04-08 | 1983-11-02 | Cyril Oury Duke | Elements for use in landscaping and building |
-
1979
- 1979-09-14 GB GB7931923A patent/GB2030892B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118588A (en) * | 1982-04-08 | 1983-11-02 | Cyril Oury Duke | Elements for use in landscaping and building |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2030892B (en) | 1982-09-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |