GB2514851A - Render and plaster roll - Google Patents

Abstract

The system uses a composite flexible material with render or plaster attached that can be rolled up like a carpet. The rolled up portion is unrolled before being attached to a wall, preferably using an adhesive which may be applied to the wall or already on the roll which is exposed by removing a paper covering. The rolled up portion may include a layer of glass reinforced plastic and carbon layer for strength. The unrolled portion may include an additional back layer of thick reinforcing paper, such as card, and provides a more even wall. An additional layer of insulating foam may be provided on the back of the unrolled portion.

Description

Wall Rendering & Plastering System

FIELD OF THE INVENTION

PROBLEM TO BE SOLVED: To provide a de-skilléd, almost instant, clean and cost effective method of rendering the outside walls of buildings along with the same benefits being applied to the plastering of inside walls and ceilings of buildings.; SOLUTION: The invention relates to an exterior and internal wall rendering and plastering system* and in particular a wall and ceiling covering system that is manufactured in a factory, and when complete is transported to site, in the form of a finished Roll' of render :" and plaster which is then unrolled and bonded to the exterior walls as render or the interior walls and ceilings as plaster.

* The invention of supplying finished render and plaster on a Roll' as a rolled up product' is "* revolutionary and unique, and as described herein, provides a technically advanced, faster, almost instant, and more economical solution to the exterior rendering and internal plastering of walls and ceilings than any current manual plastering systems which requires qualified tradesmen to carryout the work, whereas the fitting of render and plaster roll' has been completely de-skilled and can befitted by anyone who has hung wallpaper.

* 0 *FOr the avoidance of doubt there are a number of other words that describe the rendering and plastering process and the field of this invention includes the following descriptive words that are used to describe the finish on this "roll" process:-Render, plaster, overlay, line, covering, coats & coating, veneer, laminated & lam/n at/on, rough-cast, pebble-dash, stucco, pargeting, paint, wrap, sheathe, carpeted.

BACKGROUND OF INVENTION

Currently there are a huge number of exterior wall rendering systems and internal plastering systems that are manually applied to the wall surfaces by qualified tradesmen layer by layer to build up the render or plaster thickness, on the external I internal walls of buildings to create a lasting colour finish to the outside and inside of buildings.

All the render and plastering materials are normally applied manually directly to the wall or ceiling surfaces by qualified plasterers / renderers, although a recent innovation allows a few specially developed spray renders and plasters to be directly spray applied.

Generally residential exterior walls are simpler and have fewer layers then commercial walls. Again, each layer must be completed and allowed to dry on the wall before the next stage is commenced, so the system is laborious and very slow. It is only when the individual stages of the rendering process have all been applied and dried to the surface of wall, that the exterior wall façade is complete.

One of the market leaders in the commercial render market specifies four individual layers to be applied by hand by qualified renderers to create a finished exterior wall façade. The average drying time of all layers is in excess of 12 days sometimes longer and is time *." related subject to the prevailing weather conditions.

" By comparison the invention of the Render and Plaster Rolls' detailed herein do not require drying times, as they have been through a controlled drying process during :. manufacture, so the render and plaster components are completely dry, however at the time of installation to walls and ceilings a short adhesive drying time, like that of wall papering, is required to allow the adhesive that bonds the unrolled render and plaster to the walls.

". : The render and plaster rolls can be quickly filled by unskilled labourers whose only qualification would be that they may have previously hung some wall paper in their own homes.

The costs to undertake the direct application of render by hand to outside walls is more complicated and has to include the unavoidable and significant preliminary set up costs, such as the costly long rental period of scaffolding around the building particularly on larger buildings, which is time consuming and expensive to install and remove.

However the scaffolding is required to provide the necessary platforms at different floor heights to enable renders / plasterers to have direct access to prepare the external walls ready to receive the various material layers along with allowing for the extended drying time of each layer that is required to complete the process that makes up the render on the wall.

Renderer and plasterer labour costs are huge. Experienced renderers are charged out from £250 per day or at an area rate from £60.00 to £100.00 per square metre.

The invention of the Render and Plaster Rolls' on the other hand do not incur expensive labour costs or scaffold costs as the external render is unrolled downwards being placed between windows, which can be quickly fitted by using access platforms.

The platforms cost a fraction of the cost of scaffolding and are only required to be hired for a few days. The access platforms are available on short term hire which provides huge savings avoiding the high monthly rental costs of scaffolding.

Using scaffolding to undertake the rendering is disruptive for a number of months, very costly but a necessary evil, whereas render rolls create minimal disruption and the use of access platforms for filling the render rolls is minimal.

Rendering materials such as the render mortar are heavy and require scaffold lifts or telehandlers to move the raw materials from the ground up to the work area. Renders and Plasterers then hand trowel the render layers onto the walls.

The scaffolding arrangement is essential if the workers are to apply the render materials over the entire area of the walls quickly.

Typically the first layer of external render is an application of a composite mortar which is used as both an adhesive and reinforcing layer.

It is then usual to insert into the mortar, a glass fibre scrim, consisting of a reinforced This is designed to provide a stable base to the render to prevent the render top coat from cracking. In some cases it may be necessary to provide a greater thickness and sometimes a flexible additional reinforcement coat is also applied.

However, great care is required as over application of thick coats of mortar are more likely to slump (slide) down the wall due to the force of gravity, the inherent weight of the mortar and the quality of mix.

*..; Slumping of the first layer of composite mortar, usually caused by a bad mix or over * application, must be avoided at all costs because, when it does, it requires a quick removal before it sets. Once set it becomes a very costly exercise to remove and rectify.

The composite mortar layer of the render is followed by a primer coat applied by trowel or brush, and then a base coat, and in winter the addition of a setting accelerator to assist with the curing times, followed by the final render coat which completes the building façade.

The major delaying time factors of each render layer are the time taken by the renders I plasters to apply each render layer followed by the required drying time of each layer.

Care is taken to avoid the render cracking which requires remedial works to correct.

Render that cracks is a significant problem in the industry, and many companies have made large investments in R&D to provide anti-cracking renders.

The first composite mortar layer of render can take up to 3 or 4 days to dry, longer if cold weather prevails such as in the winter season when cold weather and frosts can cause the application layers to freeze, and when the speed of drying is minimal.

A complete application system of the exterior render components can take up to two or three weeks subject to the prevailing weather conditions.

Apart from the preliminary and set up costs, the costs and amounts of materials used that are built up to create the external depth of the rendered façade, 10mm to 15mm is high, and the cost of renders I plasters, upwards of £250 per day or from £60.00 to £100 per square metre to apply render, and labours assisting the renderers is also high, and so the total overall costs of doing a proper rendering job are considerable and significant.

The render roll by comparison does not require any qualified renderers and in addition there is a 50% reduction in the depth of rendering materials that make up the façade, which provides savings in materiel costs and an estimated 90% saving in labour costs, while the huge on site preliminary costs for traditional render are almost non existent for the application of the render roll.

In the construction of "new build homes" the Plaster Roll provides significant time related benefits due to the huge increase in the speed of finishing the inside of the house once it has been made weatherproof. Installing plaster roll directly to the plaster boards is also a very clean activity.

Once the internal stud walls and first fix electrics have been completed, the internal walls : and ceilings are "dry lined" with plaster board or similar and the team of dry liners would finish by taping up all the joins ready for the plasters to skim the ceiling and walls which is : ** a time consuming and messy job.

Alternatively the team of dry liners could quickly fit plaster rolls to all the walls and ceiling surfaces in the house, in about the same time that plasters would take to skim an average room. * . * 0**

*"* Furthermore the room would not need to be decorated or painted as rolls of plaster rolls are already coloured matched to the required room colours as ordered by the house builder.

Within the construction of bathrooms and wet rooms the addition of the external water proofing formula, used to weather proof of exterior renders, to the plasters provides a water proof wall. Furthermore the reinforced sandwich not only provides for support for bathroom tiles ft required.

To speed up the exterior rendering process some company's have developed special renders that, in conjunction with some expensive heavy duty spray equipment, with pumping equipment and large render supply tanks, allows the render to be sprayed directly onto the walls. Although much quicker, this does require experienced operators to undertake the spray work and overall is more expensive due to the investment required for the equipment. In addition overspray can be a problem.

To speed up the internal plastering process spray plasters and techniques have also been developed for spraying plaster onto the internal walls and ceilings of buildings, and although far quicker than the manual application, this technology does require experienced operators with expensive equipment to undertake the spray work and as a result it is very much quicker but more expensive. In addition overspray can be a problem.

SUMMARY OF THE INVENTION

in broad aspect, the invention provides the ability to manufacture a lightweight flexible composite foundation material to which external render or internal plaster is attached and fused in a production facility where it is rolled up and taken to site and applied to walls and ceilings.

in a first aspect and in contrast to the normal application of render or plaster, which is hand applied "on site", by trowel or otherwise, directly to vertical wall surfaces, the invention allows for renders and plasters to be manufactured in a remote production facility and during the manufacturing process are attached and fused, to a flexible foundation material of various widths and lengths which can be easily affixed to the walls as full sheets of render or plaster to any internal or external vertical wall surface.

In a second aspect a feature of the invention the flexible foundation material produced in the manufacturing production process has an in-built flexibility which allows the finished render and plaster material to be "rolled up," like a carpet. The "rolled up" feature of the invention allows for ease of handling, distribution and transportation to site, as well as *:*** particularly fast application and fixing to the vertical walls to be rendered or internal walls and ceilings to be plastered. * .* * * *

in a third aspect the roll of render or plaster' in large rolled sheets eliminates any need for dealing with joins I joints or for joining the material during application to the vertical walls.

* For example a single roll of internal plaster could be unrolled and fitted to the full height of *7 the room walls, so that a single roll could completely cover all four walls inside the room : without any joins. Alternatively each wall can be filled with a single off cut from the roll.

In a fourth aspect the roll of render or plaster' is unlike all rendering and plastering activities, which are classed and known as a "wet trades" because they are particularly messy and dirty, while the invention provides and maintains a completely clean environment during application to the walls, without creating any mess at all with the exception of the removal of the adhesive backing paper.

In a fifth aspect the invention overcomes all the problems associated with the drying times of wet renders and plasters on walls and ceilngs irrespective of whether the walls and ceilings are exterior and interior. The drying periods on render on exterior walls is weather dependant where as to dry the internal surfaces may require some form of heating with additional costs, to assist the drying out process.

The invention is manufactured in a controlled environment and the drying process is part of the production process and is rolled up and delivered as a dry' render or plaster. o

In a sixth aspect the "rolled up" finished product can be produced, within reason, to any length and width. The flexibility of production process creates different widths of plaster and render roll to cater for different requirements.

In a seventh aspect the manufactured render and plaster roll system uses smaller amounts of the raw materials of render and plaster without wastage producing a very Eco friendly product. This is unlike the normal rendering and plastering activity that usually uses excessive amounts of render and plaster materials required due to the fact that on occasions adhesion is difficult which tends to increase the amounts of materials used.

In an eighth aspect the invention overcomes all the problems of hand applying render and plaster directly to vertical walls by hand, such as slumping normally caused by a weak mix or over application of materials, and avoids the usual uneven over applications of render and plaster on the walls. The invention does not rely on the capabilities of the renderer or plasterer to achieve a good finish, but instead uses the production process to produce a high quality product with a perfect finish every time. U,.

* In a ninth aspect the "rolled up" finished product can be quickly fitted to the external or internal wall surfaces very quickly and with no mess. Walls can be treated with adhesive paste or alternatively the adhesive can be placed on the back of the render or plaster : *s composite material on the production line, along with a release paper attached, which is removed at the time of installation, making an adhesive free installation very fast and efficient. S.

: : In a tenth aspect of the invention can as necessary include a layer of insulation material, *:.: such as polyurethane (PU), expanded polystyrene (EPS), extruded polystyrene (XPS), Polyisocyanurate (PIR), or any other foam, or other type of material, with insulation properties, of varying thicknesses, which when bonded into the composite sandwich provides additional benefits, as for example, its thickness and flexibility allows for uneven walls and substrates to be evened out, so that the render and plaster achieves a smooth, perfectly fiat finish and appearance at all times irrespective of the unevenness of the wall being rendered or plastered.

In an eleventh aspect the addition of the insulation layer also provides added insulation properties to both the exterior and interior walls.

In a twelfth aspect the render and plaster flexible material is rolled up on completion of production, however it is rolled up "inside out" or "wrong way round" so that the render and plaster wall finishes are on the inside surface of the roll and protected by the outside base layers. The reason for this approach is to provide a quick and easy solution to improving the speed of installation as the rolls can be applied directly on to the surface to be covered as they are unrolled.

In a thirteenth aspect the render and plaster roll does not require any qualified renderers or plasters to install.

in a fourteenth aspect the render and plaster roll can be installed by anyone who has hung wall paper which reduces labour costs by an estimated 80%.

In a fifteenth aspect the render and plaster rolls provide a 50% to 70% reduction in the amount, and depth, of rendering and plastering materials that are used to create and make up the façade and finished surfaces, providing huge savings and competitive advantage in material costs with significant eco benefits and reductions in the carbon footprint.

In a sixteenth aspect with particular emphasis on the huge "on-site" preliminary costs, such as scaffolding, that occur when a traditional exterior render installation is undertaken, by comparison, the costs of installing of the render roll to the same building would be considered so small as being almost non existent. The render roll provides significant competitive advantage.

* In a seventeenth aspect the render and plaster flexible material can include a bottom * *, carrier layer comprising a thick paper based material with a high paper weight in a choice * .:.. of thicknesses, and although less flexible than the insulation material, the inclusion of this paper bonded into the composite sandwich provides the "render and plaster roll" with additional benefits which due to its thickness can obscure significant wall damage, which otherwise would be noticeable when a smooth even textured surface is applied. * * *** S. *

In a eighteenth aspect of the invention, the composite material on which the render and plaster have been fused is extremely strong and dimensionally stable through the addition of various types plaster reinforcing GRP flexible mesh webbings, which provide additional benefits including a fire retardant mesh.

In a nineteenth aspectthe rolls can include armour mesh for wall lamination. The exterior render sandwich may be strengthened by the inclusion of the very strong and flexible, reinforced and heavy weight armour mesh, which when bonded to the wall, the entire composite sandwich laminates the wall, reinforcing the walls through its "in built" inherent strength, which provides long lasting protection to any walls irrespective of whether the wall surface renders or plasters are cracked, cracking, or crumbling, the lamination process provides significant additional overall strength to the walls in a similar way to the lamination of car windscreen.

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DESCRIPTION OF THE EMBODIMENT

An embodiment of the inventioq provides for an exterior wall rendering system and internal wall plastering system that is initially produced as a flat composite product on a horizontal production line surface, which eliminates all the normal problems associated with applying render or plaster to vertical surfaces, and during part of the production process is Subsequently during the production process a vertical position is adopted.

The invention provides for a render or plaster covering that is produced away from, and in isolation to the wall to be rendered or plastered. The production process specifically brings together different layers of materials that are combined and bonded together, on a horizontal and vertical flat bed to create a very flexible lightweight composite sandwich with significant strength and comprises a continuous thin flat surface of any width, which acts as the flexible carrier base for the chosen type and colour of façade render or finished coloured plaster, which is bonded and fused to it during the production process.

The production process of the invention creates a composite flat lightweight sandwich with enormous strength and flexibility with an in built feature' that allows for the finished render or plaster to be rolled up" like a carpet' without cracking, and packaged ready for *: distribution and delivery to site.

r4 The invention provides for uneven substrates in the walls to be rendered or plastered, by including, as necessary, a backing layer of insulation material, such as Polyurethane, : * expanded Polystyrene, extruded Polystyrene, Polyisocyanurate, or any other foam, or other type of material, with insulation properties, of varying thicknesses, which when bonded into the composite sandwich provides addjtional benefits, as its thickness and flexibility allows for uneven substrateS to be evened out so the finished render and plaster provides an overall perfectly fiat smooth finish and appearance.

*:*. The inclusion of the insulation within the composite render and plaster sandwich provides additional insulation benefits to the building.

A further embodiment is the production process enables extremely long lengths of rendering or plaster material to be produced in roll form', like wall paper, lino, carpet, and the ability to produce rolled up' render or plaster provides additional enhanced benefits for transportation and for quick application to finish the ceilings and walls with plaster or render.

The rolls of render and plaster, when delivered to site, provides immediate ease of application and installation to the walls utilising adhesives applied during the manufacturing process or as appropriate on the in situ walls, similar to undertaking the normal activity of wall papering, where the wall paper would be unrolled and glued and stuck to the vertical walls in the room with adhesive.

The production process allows for different widths of render roll so that single length drops of render material can run from the top of the building, tall buildings may require more than one drop due to the size of the roll.

The width dimension of the roll would be designed to have exactly the same horizontal distance dimension that exists between the windows of the building.

The windows in the majority of buildings are placed over each other which provides a uniform vertical pattern, which the invention allows for vertical drops of the render material to be dropped and placed between the windows which not only avoids unnecessary waste but which makes the render material easier aid quicker to provide an accurate fit to the building walls.

The invention production process allows for different roll widths of render roll so that shorter lengths of render roll can be provided to infill the remaining wall section gaps under all the windows, and all other remaining wall areas not been covered by the render drops.

The production process creates different roll widths of plaster to cater for different room heights so that a single horizontal plaster roll can run horizontally from left to right horizontally along the wall of the room or visa versa.

Employing this procedure of installing a roll of plaster removes the need for any roll joins along the wall as the plaster roll is unrolled and fitted as a single piece of plaster.

The invention allows for the render and plaster rolls to have a range of appropriate adhesives placed on the underside of the composite sandwich to allow the roll to be *:°* quickly bonded to different types of wall surfaces.

:"i Adhesives can be applied directly to the walls while hanging and fixing the render and plaster drops to the walls, or alternatively can be applied during the production process : *** with a release paper which seals the adhesive, until the adhesive is exposed by removing the release paper at time of installation.

All that then is required is for the render surface to be pressure rolled to remove trapped * air bubbles and to create a permanent bond between the finished render or plaster and the :::: wall or ceiling.

The installation process of the invention provides for bonding the render or plaster substrate to the wall which will strengthen and laminate the render and plaster to the wall, and due to the inherent strength of the render and plaster sandwich, the walls become reinforced, preventing further cracking and general decomposition and degradation of the walls.

The production, render and plaster process, provides materials with inbuilt colours that run throughout the depth of the material, ensuring that any surface damage always remains the same colour, and re-painting is never required unless by choice.

The invention reduces the amount of render and plaster laid down during the production process is minimal and in comparison to normal rendering and plastering applications is 50% to 70% less providing a huge material cost savings.

The production process allows for different ingredients to be added to the render and plaster laid down, which changes the properties of the render and plaster, e.g. additives can be included to provide an impervious watertight membrane so that the plaster, with similar formulas to exterior render, could be used in bathrooms and wet rooms, kitchens etc., without the need for additional wall coverings such as tiles.

Towards the end of the production process the invention allows for renders and plaster to be over printed, so that the plaster rolls could be printed with tile designs or whatever, which are "built in" ready for the customers bathrooms and kitchen walls etc. The rolled up render and plaster rolls are rolled up "inside out" / "back to front1' which ensures the render and plaster surfaces are inside and completely protected by the roll backing, and most importantly of all, the roll is ready, to be quickly unrolled, and applied directly onto the wall.

As the render and plaster finish cannot be seen without unrolling, the final 50cm of the roll is folded back on itself so that the render and plaster finish can be immediately identified without the need for unrolling. This 50cm fold back is provided to allow for customers who require a swatch and colour samples for matching.

The remaining part of the exposed outside roll includes printed information about the roll contents along with identification and bar codes all of which is applied during the production process.

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Claims (1)

1. CLAIMS1: A composite flexible material with Render or Plaster attached that can be rolled up into a "Roll of Render or Roll of Plaster" like a carpet.

   2: A flexible render and plastering system has been invented whereby the render and plaster can be attached to a composite material prior to being unrolled and attached to walls.

   3: A flexible render and plastering system whereby the render and plaster is attached to a composite flexible sheet material.

   4: A composite flexible material with Render or Plaster attached to the front side of the material.

   5: A composite flexible material which can be rolled up without the attached render or plaster cracking or falling off.

   6: "Render and plaster rolls" have completely de-skilled the rendering and plastering process.

   ": 7: A composite flexible material which is very lightweight which makes it easy for the end user to install. * * * n.e

   8: The "render and plaster roll" material is a selection of materials that combine to create a composite sandwich material Nhich is very flexible.

   -,. 9: When strength and wall lamination is required the "render and plaster roll" includes a glass reinforced plastic and carbon layer in the sandwich providing huge strength.

   10: To counter any wall damage the "render and plaster roll" material can include an additional back layer of heavy duty thick reinforcing paper, like card, which effectively hides the wall damages and! problems and provides a more even wall 11: To counter the general unevenness of any wall the "render and plaster roll" material can include an additional back layer of insulating foam to provide a very smooth wall 12: The inclusion of a layer PU, PR, EPS or XPS or other types of foams and insulation in the composite material of the "render and plaster roll", provide additional insulation to the walls.13: The roll of "render and plaster roll" is quick and easy to install.14: Wall and ceiling installation of the "render and plaster roll" is a clean process.15: Wall Installation by the end user only requires the ceiling and skirting excess material to be trimmed, and in new builds only the ceiling excess needs to be trimmed.16: Subject to the length of roll purchased, full wall and ceiling coverage can be achieved from a single "render and plaster roll" (like fitting 5 & 6 metre wide rolls of carpet) without the necessity of any vertical or other joints or joins.17: Wall installation of the "render and plaster roll" simply requires placing adhesive on the wall, in a similar way to wall-papering.18: High tack adhesive may be applied, with adhesive release paper, to the back of the "render and plaster roll" during the production process, and to fit to any suitable wall or ceiling surface simply requires removal of the adhesive release paper prior to unrolling and fixing to the wall, no other adhesives need to be applied.19: The "render and plaster roll" will provide a weatherproof fully finished protected surface to exterior walls.20: The "render and plaster roll" when used in bathrooms, shower wet rooms is sealed to provide a completely impervious watertight surface which doesn't need tiling, and which in any event can be printed with tile designs as ordered.:" 21: The "render and plaster roll" will provide UV protection to the surface of exterior S...walls.S.....22: The "render and plaster roll" uses most of the standard type renders and plasters which carry exterior guarantees, all of which are passed to the end user.23: The "render and plaster roll" includes an enormous range of textures and colours including variations of design of plain or decorative colours.24: The "render and plaster roll" material includes a dynamic range of Frescoes, * graphic designs, murals and pictures.25. The "render and plaster roll" when used on the exterior walls of buildings for rendering does not require scaffolding around the building.26: Exterior walls of buildings can be installed by using access platforms rather than expensive scaffolding.27: The composite material with the render or plaster attached is produced in a combination of horizontal and vertical production techniques, and on completion of the production process the product can be "rolled up", like a carpet due to its composite make up and special development of the relationship between the materials that make up the render and plaster.28: The rolled up render and plaster rolls are rolled up "inside out" / "back to front". This is an important procedure as it ensures the render and plaster surfaces remain hidden and cannot be seen on the inside, and the render and plaster covering is completely protected by the rear surface of the roll backing, and most importantly of all, and particularly for filling, the roll is ready, to be quickly unrolled, and applied directly onto the wall without further adjustment.29: As the render and plaster finish cannot be seen without unrolling the roll, the final 50cm of the roll is folded back on itself so that the render and plaster finish can be immediately identified without the need for unrolling or checking the identification marks to verify the contents of the roll.30: This 50cm fold back also provides a ready source of samples to allow for customers who require swatch and colour samples for consideration and discussion.The remaining part of the exposed outside roll includes printed information about the roll contents along with identification and bar codes all of which is applied during the production process.31: Subject to handling requirements and required specific performance the "render and plaster roll" wall covering can have any thickness of coating, which in any event is likely to have a thickness which is around 80% thinner than traditional render.32: Subject to handling requirements the "render and plaster roll" wall covering can utilise different thicknesses of the composite light weight materials in the foundation material which will include different combinations." 33: Towards the end of the production process the invention allows for renders and * plaster rolls could be overprinted with bespoke household marble and tile designs to the customer's choice, along with the necessary additives built into the render and plaster roll to be applied to walls and ceilings in bathrooms and kitchens etc. * .-a. S 34: The production, render and plaster process, provides render and plaster which is mixed with colours prior to application which ensures that the colours and effects run throughout the depth of the material, ensuring that any surface damage always remains the same colour, and re-painting is never required unless by choice 35: The material make up of the "render and plaster roll" wall covering is both sourced and derived from man made chemical material formulas, fibre or as appropriate, or could be derived from a naturally found material on planet earth, or a combination of both.36: The "render and plaster roll" provides enormous eco benefits due to the energy savings incorporated in roll production which considerably reduces the amount of materials used and in addition eliminates all the wastage incurred in manual applications of render and plaster. The render and plaster roll process provides increased insulation values with corresponding heat savings due to the increased insulation values which makes for a very Eco friendly product with a low carbon footprint.