EP0874089A2 - Insulation and drainage element made from a hard foam material and method of using the element in the ground - Google Patents

Abstract

A rigid foam, especially extruded polystyrene, insulating and draining element(3) used near ground level has either: a) water drainage grooves and surfaces(1) on the side facing the building or b) internal channels, both types running downwards to drainage pipes or layers. Joints between elements(3) on the outward facing side are covered by a fibre fleece(2). A similar drainage element is claimed which excludes the fleece(2) but includes filtering strips or ropes in the joints between elements(3). Also claimed is an insulating and drainage element in roll form comprising adjacent rectangular cross-section strips of extruded polystyrene foam backed with a fleece. Two or more edges of the fleece project from the edges of the roll so that they overlap the joint with an adjacent roll. The building facing side has longitudinal, transverse or diagonal grooves or naps for water drainage. A method for insulating buildings at soil level with the polystyrene foam elements(3) is claimed.

Description

The thermal insulation of components, also in the area in contact with the earth, comes because of the need to save energy, an ever larger one Importance too. For economic and ecological reasons searched for solutions that are simple and with as little as possible Use of materials must be carried out.

See insulation materials that are known in the ground even without moisture protection can be installed, methods apply in which the insulation layer must be sealed against moisture as technically outdated, because it is easier and less problematic to waterproof the structure to be applied to solid surfaces (such as the basement outer walls) as well as the insulation outside the seal and this to be installed in a protective manner at the same time, especially known and proven In this application, rigid plastic foams are made of extruded Polystyrene.

Because of the special nature of the soil or a special one Location of the house (e.g. on a slope), it is often also necessary that Surface or in the vicinity of buildings other water through a downward drain in drainage pipes because pressing water could damage the building cause, if not the waterproofing and the whole Building construction matched to such a load, i.e. the building is built more complex.

The vertical drainage can take place using suitable bulk material, but there are also special elements that are sufficiently permeable to water made of different materials. These items are on the Continuous outside of the seal if thermal insulation (Perimeter insulation) is present on this outside, up to installed for drainage.

But insulation elements made of polystyrene extruder foam are also known where there are sufficient grooves on the outside and one side Dimensions are milled through which the water is drained can be, as in the known inventions EP 30948 and EP 31908 the grooves are covered by geotextile nonwovens are intended to prevent the channels from being covered with soil or fine particles filled in and slurried out, but must be ensured be that the grooves protected by geotextiles too remain functional if the according to the installation depth occurring earth pressure occurs.

This is one of the reasons why such insulation drainage elements are only up to limited installation depths.

It has also been found that when inconveniences meet Conditions such as large earth pressure, large fine fraction in the Soil, unsuitable bulk material and / or high water pressure, the drainage part of the known foam plastic elements is overwhelmed and is squeezed, slurried or even destroyed.

In addition, the used when filling the building Compaction equipment the functionality of the water drainage channels adversely affect or cancel.

The invention was based on the task of an insulation drainage element Rigid plastic foam, preferably polystyrene extruder foam to develop its insulation and drainage performance even with unfavorable Soil and installation conditions with greater earth pressure and higher Water pressure ensures that the functions of thermal insulation and Drainage are fulfilled and it is thus ensured that on Building no pressurized water can occur.

The task was solved by laying the for drainage required channels / areas (1) of the soil / filler facing side of the element made of rigid plastic foam to the side facing the building / waterproofing (Fig.1) or into the interior of the insulation board (Fig. 2) and by separating the functional parts Filtration (2) and drainage / water drainage (1) Because the task of drainage in front of buildings is only pressing To prevent water on the building envelope.

The plastic hard foam parts / plates (3) now get independent on the position of the filter layer and on the opposite side of the plate in the installation forward mainly to the building floor (and to the Drainage pipes) directed water drainage channels. (1) The channels can be vertical (Fig.3), vertical and horizontal (Fig.4) as well run diagonally (Fig. 5) However, larger ones are also possible Keep areas of the side facing the building clear for drainage and only provide knob-shaped spacers (4). (Fig.6)

Of course, on the side facing the building of elements also pre-made known suitable for drainage Plastic parts (5) are glued (Fig.7) but without the if used since then apply continuously Filter fleece.

As already mentioned above, the drainage pipes / drainage surfaces / drainage plastic parts are located in contrast to the known methods and also in contrast to the inventions EP 30948 and EP 31908 in Installation condition now on the building or on the building sealing (11) on.

The dimensions of the channels (1) need only be as possible To direct waterfalls, and the otherwise possible, the function affect loads such as mechanical damage to the fleece, Destruction due to excessive earth / water pressure, damage to the Filter layers due to the large bridging distance are immaterial and no longer need to be considered Channels, grooves, stirring (1) can now be wider, deeper, larger, because only the compressive strength of the entire element on the The outside limits the application.

Fleeces (2) that prevent soil from penetrating into the drainage channels or to prevent the seal (11) only have to still be present in the area of the insulation elements / insulation board joints (Fig. 8) and therefore have no large gaps They are on the side facing away from the building Side of the elements.

It is even possible in the case of a corresponding fold / joint design Fold / joint area only filter tapes / ropes (6) or glue in. (Fig. 9) Principle now areas on the side facing the ground occur with pressing water, but this does not hurt, because After the task, the only thing that matters for the building is that in the area of the outer walls (12) and the seal (11) no pressing water is present.

Because keep the insulation elements made of polystyrene extruded foam (3) proven their insulating ability also in the area of pressing water.

If the entire surface of the elements is in contact with the waterproofing of the building (11) is desired, the drainage channels (1) can also lie inside the panel of the insulation elements or at an edge in the Inside of it. (10)

Drainage channels (1) inside can also be done by joining them together be achieved / created by two foam plastic elements.

As far as the arrangement of the filter fleeces (2) is concerned, they are generally installed in the area of the flat facing facing the soil in such a way that the geotextile filter fleeces overlap on the neighboring plates.
It is also possible to apply the filter fleece (2) in the joint area in strip form or continuously in a separate operation after the assembly of the plastic hard foam elements. For reasons of economy, however, it will be preferred to use ready-made elements, which are already provided with fleeces.

As far as the joint formation of the insulation drainage elements is concerned, so can these also basically smooth, i.e. without special profiling be (7) if the canals facing the building or the canals Allow any water to be distributed inside but can also be easily and without in the Elements in special channels and in contrast to EP 31908 improved the possibility of water distribution via a "storage space" will.

For this purpose, the insulation boards are at the top and bottom, depending on Template, either on the narrow side or on the broad side provided with a step fold, but not how otherwise all levels of the fold of an element to the usual appropriate levels of the other fold, but lean not or at least not at least one level (Fig. 11 Fig. 12)

The location of the resulting from this simple change of the fel Cavity allows a connection (and a Distribution of water) to the downward channels.

Even in the case of joint formation with tongue and groove, the the same principle easily created a storage space (8) when the spring is pointing up or down is shorter than the groove of the adjacent plate. (13) It is but also possible e.g. with the upper part of the lower plate a step fold, the lower part of the upper plate but blunt, i.e. without leaving a fold, or vice versa the upper one Run part of the lower plate bluntly and the lower part the top plate with step fold. (Fig. 14)

In another embodiment, the vertical channels continued in the fold area over its entire width, so that the upper edge of the plate is broken through (9) is. (15)

All these joint variants have in common that on the Soil-facing side overlapping on the neighboring plate Plastic fleece (2) is located. (Except ribbon / rope)

The principle according to the invention can also be used with rollable plastic hard foam parts acc. EP 0430 141 B1 (Fig. 16) with the filter layer (2) also the soil is facing and the drainage oils / drainage surfaces (1) separated of which on the other side of the element when installed on the building issue.

Contrary to that described in the invention EP 0430 141 B1 and shown way, the drainage channels (1) are not on the nonwoven side of the element but separately on the opposite side in the hard plastic foam or behind it Channels can be either lengthways or crossways (depending on the installation whether horizontal or vertical) or diagonally Diagonal channels can make the runways both horizontal as well as vertically, but there are also knobs (4) possible on the side facing the building.

At the base or at the footprint of the invention Depending on the type of footprint, elements can either be Channels (1) by hand in sufficient size and shape to the drainage area, the horizontal drainage or but you use prefabricated water-permeable, filter-secured Corresponding elements.

At the upper end of the perimeter insulation according to the invention the drainage channels either covered or by filter fleeces secured so that neither soil nor plaster (connection work) can get into the channels.

Claims (10)

Insulating drainage element made of rigid plastic foam (3), preferably Polystyrene extruder foam for the thermal insulation of Components in the ground and for the drainage of water marked that on one side of the element (and in the installed state based on the building) drainage grooves / surfaces (1) are predominantly down (to the drainage pipes or drainage layers) are directed and on the other side and only in the joint area one in the installed state on the neighboring elements overlapping filter fleece (2) that all panel joints covers. Insulating drainage element made of rigid plastic foam (3), preferably Polystyrene extruder foam for the thermal insulation of Components in the ground and for the drainage of water characterized in that inside the plastic foam sheets Channels (1) are located one below the other can be connected, which are mainly down (to the Drainage pipes or drainage layers are directed, and which on one side (in the installed state the soil facing) and only in the joint area when installed filter fleece overlapping the neighboring elements (2) that covers all panel joints. Roll insulation and drainage system with strip-like juxtaposed Stripes of rectangular cross-sections made of rigid plastic foam (3) preferably extruded polystyrene foam, the a carrier web on one side made of water-resistant, filter-stable nonwoven (2) which protrudes on at least two edges, that when installed, all panel joints are covered and on the other side longitudinal, transverse or diagonal grooves (1) or knobs for draining water are located. Insulation drainage element made of plastic hard foam (3) is preferred Polystyrene extruder foam for the thermal insulation of Components in the ground and for the drainage of water characterized in that on the in the installed state drainage channels / areas on the side of the building or predominantly inside the elements channels (1) are located below, which also follow are directed below and encircling the joints of the elements Have filter tapes or filter strings (6). Insulating drainage elements according to claim 4, wherein the drainage channels (1) inside by merging two accordingly preformed plates (3) are created. Insulating drainage element made of rigid plastic foam, preferably Polystyrene extruder foam (3) for the thermal insulation of components in the ground and for water insulation according to requirements 1, in which at least one fold of a step fold design is shorter, so that when installed a storage space / cavity on the side facing the component / building (8) arises. Insulating drainage element according to claim 1 with tongue and groove joint formation, at which the spring on at least one side of the plate (3) is shorter than the groove that is in the Installation of adjoining plate so that a cavity is created which is connected to the drainage channels. Insulating drainage element made of rigid plastic foam, preferably Poystyrene extruder foam (3) for the thermal insulation of components in the ground and for draining water as required 1 with rebate design, where the drainage channels (1) across the entire width of a fold be continued so that the fold comb-like (9) broken is Insulation drainage element made of hard plastic foam, preferably Polystyrene extruder foam (3) for the thermal insulation of Components in the ground and to drain water Claim 1 with a notch at least one side of the panels has no fold, so that when installed on the side facing the building in A cavity (8) is created in the joint area. Process for the thermal insulation of components in the ground and for draining water with rigid plastic foam (3) preferably polystyrene extruder foam according to the Claims 1-9.

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