Geodesic The Concept
As related to a cost effective mass housing solution.

 

Materials

SA Pine
Isoboard

Cemcrete

Technical Finishes (Pty) Ltd

EIFS (Exterior Insulated & Finishing System)
Everite
Rhinowall

 

The structure has a CCMA treated timber framework (SA Pine). SA Pine and is SABS ( South African Bureau of Standards) approved. For more information see www.sabs.co.za.


The timber claddings and cavities have a variety of optional materials. Amongst them is a high density rigid XPS insulation called ISOBOARD®.

For more information see: www.isoboard.co.za.
ISOBOARD®extruded polystyrene rigid foam, has closed cells with common sides and is produced on a continuous, fully automated extrusion process, in accordance with international specifications and standards.

The cost of energy and demand for air-conditioning in buildings is constantly increasing. One of the best ways to conserve energy is to provide high class insulation for buildings.
The ever increasing costs of heating and cooling dwellings, workplaces, livestock and storage facilities, highlights the need for effective, long-lasting insulation. Insulation should be viewed as a long-term investment. With increased energy conservation becoming more and more important, the ability of the product to effectively insulate a building - of whatever type - is equally important.

This is exactly what ISOBOARD® achieves. And what is more the product outperforms its competitors when comparing long term retention of thermal resistance.

ISOBOARD® thermal insulation is a high density, rigid, extruded polystyrene insulation board. It has a 100% closed cell structure and is produced on a fully automated extrusion process - in accordance with international specifications and standards.

In controlled environments e.g. air-conditioned office blocks, wine cellars, etc., the product's payback period ranges from 3 - 5 years, due to savings on energy costs.

With the manufacturing plant base in Atlantis, Cape Town, the use of advanced, state-of-the-art technology makes it possible to guarantee exceptional properties such as:
     
      SAVINGS UP TO 40%
     
      ISOBOARD® retards heat flow into buildings in summer.

      ISOBOARD® keeps heat inside buildings during winter.


HEAT FLOW:
ISOBOARD® has a k-value of 0,024W/m°C (determined in accordance with ISO 8302:1991(E) or ASTM C518) at 20°C mean temperature and 90 day aged. The k-value will increase with time when exposed to air and will also be influenced by water content.

      · high resistance to heat flow i.e. conductivity

WATER:
ISOBOARD® will only absorb 0.32% (ISO 2896:1987) water and heat flow resistance will reduce by only 3%.

VAPOUR:
ISOBOARD® 's closed cellular structure provides exceptional resistance to water vapour permeability. Heat flow resistance will reduce by a maximum of 8%.

      · resistance to water vapour diffusion and water absorption
      
      · uniform density distribution

      · very high compressive strength

      · ageing resistance


PEST:
ISOBOARD® is odourless, chemically inert and does not supply nutrition for pests, or support micro-organism growth.

      · resistance to bacteria and micro--organism growth


FIRE:
ISOBOARD® contains self-extinguishing fire retardants and will not propagate fire in exposed roof applications as certified by the CSIR report no B7510/020 5600 5664. Click here for Large Scale Fire Tests report.

      · non-toxic

      · flame retardant

      · Agrement approved


Cemcrete


(www.cemcrete.co.za) has developed natural, cost-effective, adhesive cement that provides a waterproof base coat sealing for the exterior application. A finish with any type of texture and color is possible with the vast product range offered by Cemcrete.
Some of Cemcrete's product range includes:

BASECOAT
An intergral part of the Exterior Insulation Finish System - EIFS. A special mixture of adhesives, fillers, plasticers, etc. for mixing with ordinary Portland cement to obtain a controlled mixture for repair of concrete and masonry, attaching and subsequent surfacing of polystyrene insulation boards prior to painting, etc.

Base coat and Adhesives use is twofold:
Firstly it can be used as a "base coat" for leveling, patching and filling masonry, concrete and plaster before painting, with or without a glassfibre reinforcing mesh. And secondly as an adhesive for pasting insulation board (polystyrene) or feature segments onto interior or exterior buildings before covering with glassfibre, reinforced mesh impregnated with the same material.

Available in 25 kg drums
Coverage: 0,5 m(sq)/kg mixed material 3 mm thick.


STIPPLECRETE
An economical coloured waterproof cement-based textured finish for exteriors and interiors on walls and ceilings. Integrally coloured to eliminate painting. Brushed to waterproof and then stippled to texture using a whitewash blockbrush directly onto brickwork or blockwork. Cure each coat with water three times the following day.

Passed 24hr SABS rain penetration test on single coat application, report availabe on request.

Coverage: 10 - 14 m(sq.)/40 kg sack stippled
14 - 22 m(sq.)/40 kg sack brushed (Both depend on surface suction).

COLOUR HARDENER
Cemcrete color hardener and color release agent.

For concrete that is more than mere concrete.

A blend of special cements, coloring agents and extremely hard wearing aggregates for dusting onto wet concrete or a wet screed before imprinting with a rubber mould to give the effect of tiles or paving. Used in conjunction with colored release agent to prevent the mould sticking to the wet concrete and give 1, 2 or 3 colors in final surface.

Color hardener colors: Red, Tan, Slate, Ivory, Straw, Grey and Hunter's Green
Coverage: Approximately 5 sq.m/20kg.
Release agent colors: Dark Brown, Black, Terra Cotta, Green, Yellow, Light Grey and Hunter's Green.
Coverage: Depends on usage and depth of color required. Normally 0.4kg/1m.sq.
Surface to be sealed with color hardener sealer.

Cemcrete products are also Agrement approved.



Agrément South Africa serves the national interest by being the internationally acknowledged, independent South African centre serving the building and engineering communities by providing assurance to specifiers and users via technical approvals for the fitness for purpose of non-standardised and/or unconventional products.

Relevance
Agrément South Africa was established as an independent organisation by the Minister of Public Works in 1969. Its support structures bridge the public and private sectors, and include local and international professional and academic advisers.

Primary Business Focus
Agrément South Africa's primary business is the certification of non-standardised construction products, through technical assessments that verify whether the products are fit for purpose.

Primary Target AudienceAgrément South Africa serves the construction communities, by providing assurance to specifiers, regulators, financial institutions and users thereby facilitating entry into the market by entrepreneurs.

For more information go to: www.agrement.co.za.









 www.everite.co.za

Everite, founded in 1941 by Swiss entrepreneur Hans Rudolph Benecke, is a world class supplier of building products to the Southern African region. Everite's strategy is to focus on niche markets, providing service and products that meet customer defined specifications and expectations

By the late 1940's two factories at Klipriver, Gauteng and Brackenfell, Cape Town were producing a comprehensive range of flat, corrugated and moulded products.

The company was listed on the Johannesburg Stock Exchange in 1959.

In the 1980's Everite embarked on a campaign to find a suitable replacement for the asbestos fibres, which led to the introduction of Nutec fibre-cement products. This has now developed to the stage where all their flat products are manufactured without asbestos as a raw material.

In 1992 Group Five acquired the Swiss shareholding of Everite and with it control of the company. In 1997 Group Five bought the remaining 49% of the share and de-listed it.

Today Everite Building Products enjoys a strong presence in South-Africa and has made aggressive inroads into the international market.

Their Product range is well placed across the building and construction industry, serving the full spectrum of end-user market segments, distribution channels and influences with competitive and quality solutions.

Nutec fibre-cement is the registered name for fibre-cement building products made without asbestos. Waste materials from the fibre-cement manufacturing process are either recycled or disposed of under controlled conditions. Builders rubble containing fibre-cement off cuts can be disposed of in normal ways, as the high density material will not release significant quantities of fibre into the atmosphere.

Nutec flat sheets are manufactured from a combination of Portland cement, silica and organic fibres and do not contain any asbestos fibres. These materials have considerable strength in their own right and will not deteriorate with age.

EVERITE has over the years established a reputation for producing outstanding quality flat sheets which have been used over a wide range of external and internal applications.

Nutec flat sheets are available in medium and high density material and in plain and medium density textured finishes, offering a wider choice for innovative applications.

Nutec flat sheets are:

· An economical all-purpose building board which is unaffected by moisture and therefore ideal for internal and external use in almost any application.

· Relatively light in weight and can be supported on light gauge metal frames or light timber structures. These factors facilitate easy handling and erection and are major benefits on projects where low mass construction is an important factor.

· Non combustible and provide perfect protection against flying sparks.

· Resistant to corrosion and are unaffected by ultraviolet light.

· Designed to have good thermal properties when compared to other building materials.

· Manufactured to the highest internal quality standards and compliance is ensured by strict quality assurance programs in the production process as well as stringent laboratory testing.

· All Nutec flat sheets carry a SABS mark for compliance to the specification SABS 803.

· Nutec flat sheets are supplied in their natural color but are compatible with a large variety of applied coatings and paints. This allows the designer an almost limitless combination of colors and textures for external and internal applications.

The sheets are best painted with a pure acrylic PVA paint.

Everite has recently extended its range of Nutec fibre-cement products with the introduction of tongue-and-grooved panelling which features a realistic wood grain finish and is suitable for use in a variety of applications, both interior and exterior.

This product is supplied in a natural grey colour and, as it is compatible with a variety of paints, the timber-like finish can be enhanced with wood stain varnishes or paint techniques. The decorating possibilities with Nutec panelling are limitless - different combinations of colours and textures can be achieved by using a brush, roller or spray gun. When compared to natural wood,Nutec tongue-and-grooved panelling is cost-effective and exhibits high performance properties of being vermin, rot and termite proof, non combustible and maintenance free. Nutec tongue-and-groove panelling is available in 6mm and 9mm thicknesses, widths of 1200mm and in standard lengths of 2400mm, 2700mm, 3000mm, and 3600mm.

Rhinowall

www.rhinowall.com


www.bpbsa.com

BPB Gypsum, the manufacturers of Rhinowall, has been in South Africa for more than 70 years. They are the world's largest gypsum group, operating more than 90 manufacturing plants and serving markets in more than 45 countries. They are also the leading producer of plasterboard in Europe, Canada, Scandinavia and South Africa and have substantial European investments in the manufacture of complementary building materials and paperboard products.

What is unique about Rhinowall studs?

All Rhinowall studs are rigidised utilising a unique patented manufacturing process, which substantially strengthens the product.

What type of Rhinoboard should be used when cladding a Rhinowall?

15mm taper edge Rhino Firestop gypsum board.

How is a one-hour fire rated Rhinowall constructed?

It is constructed of a single layer of 15mm firestop board each side of a 58mm stud.

Can a two-hour fire rated Rhinowall be glazed?

As there is no glass that has a two-hour fire rating, this would not be possible.

How is skirting fixed to a Rhinowall system?

Skirting can be fixed with either self-tapping screws (fixed into the studs), fixed with a 41mm streaker screw, good quality double-sided tape, or if a suitable flat skirting is used, it can be glued directly onto the wall.

What type of paint is used to paint a Rhinowall?

Use good quality PVA paint over a plaster primer on the joints.

How is a floor track fixed to a concrete floor?

The recommended method is Hilti type nails, concrete nails or drill and plug.

Can Rhinowall be used externally?

No, Rhinowall is only designed for internal walls.

What is the life span of Rhinowall?

An internal Rhinowall will last a lifetime provided that it is not abused.

Is Rhinowall fireproof?

The Rhinowall systems have varying fire ratings with a minimum of an hour and a maximum of two hours. Every component is non- combustible.

How sound proof is a Rhinowall?

A Rhinowall varies from 43dB to 52dB. Bear in mind that a single brick wall has a rating of about 44dB.

How wide is a Rhinowall?

89mm

How thick are the gypsum boards used in Rhinowall?

15mm Rhinoboard.

How far apart must the vertical studs in a Rhinowall be spaced?

The studs are spaced at 600mm centres for all Rhinowall systems up to a height of 3600mm.

Do holes need to be pre-drilled for the drywall screws?

No, the drywall screw is self-drilling.

How are the screws fitted into the studs?

With the use of a drywall screw gun, which is a drill with a clutch and a depth gauge.

What is fibatape used for, and what plaster is used to fill the joints?

Fibatape is placed over the Rhinowall joints before plastering to provide re-enforcement at the joint. Rhinoglide is specially formulated setting joint filler, which is used with tapered edge gypsum boards.

What type of doorframe can be used with a Rhinowall?

A steel doorframe. It is possible to use a wooden doorframe but this would have to be made up on site.

What product is used at the abutment to a brick wall?

A steel wall starter is used.

Can Rhinoboard be used to build a shower?

Yes, there is a special moisture resistant board that can be used. This has been tested extensively by the SABS .

Would the same board be used in a kitchen?

Yes, it is ideal for use in a kitchen. It is important to remember to seal the boards with two coats of Gypseal before tiling. Special care should be taken to protect the exposed cut edges.

What is the difference between the two gypsum boards?

The moisture resistant board has a distinctive green coloured paper on the outside whereas the normal gypsum board is brown / beige.

How is Rhinoflam or Rhinocoust Insulation installed into the wall cavity?

By securing to the top track and hung in the cavity.

Is a foundation needed for a Rhinowall system?

No, Rhinowall does not need any foundations.

Is Rhinoboard rodent proof?

Yes.

What is the easiest method to find a stud that has already been boarded?

The easiest way to find a stud in a wall is by running a strong magnet along the wall.

How is a sharp clean edge at a corner of a Rhinowall made?

By utilising a corner bead, which provides a strong sharp edge.

How is a shelf fixed to a Rhinowall?

If the Rhinowall is already built the shelf must be fixed to a stud in the wall, or alternatively using a molly bolt fastener. If the wall is still being built, insert a wooden noggin between studs in the area where the shelf is to be fixed.

How does a picture get hung on a Rhinowall?

If it is a lightweight picture, a stick on type picture hook can be used. If it is heavier the nail and hook type hook may be used, making sure the nail is driven downwards at about 20 degrees.

How do I know I can trust this product?

Rhinowall is manufactured by BPB Gypsum SA, who have been active in SA since 1929 and is a subsidiary of BPB plc, the largest gypsum company in the world.

Can I install built-in cupboards if I have Rhinowalls?

Yes. Rhinowall can support pictures, mirrors, hanging cupboards, wall units, hand-basins and any other device normally attached to residential walls.

How soon after installation can I paint my Rhinowall?

Rhinowall is a dry construction. It can be painted within 24 hours of completion.

Can I use Rhinowall for bathrooms?

Yes. You can even install your shower in Rhinowall as it is moisture resistant. .

· The walls are manufactured from natural gypsum and only recycled paper is used.

· There are also no harmful or toxic substances in Rhinowall.

· Rhinowall waste is less than 10% of that of masonry construction and the dust produced when cutting the wall is harmless.

· BPB Gypsum, the manufacturers of Rhinowall, are ISO 14001 listed, i.e. they are compliant with the international environmental standard for manufacturers. At the end of the day, less atmospheric pollution is caused in manufacturing Rhinowall than brickwork.
Insurance companies accept Rhinowall in fire protection applications and in some cases even call for drywall firebreaks.

It has a 60-minute fire rating, which is more than 3 times the legal requirement.

The SABS and government accept Rhinowall in fire protection applications.

You'll never see a Rhinowall do something indecent, like crack or peel. Only bricks and blocks are that coarse.

Brickwork using sand-cement shrinks on setting. This results in cracks.

If the environment is stable, Rhinowall won't crack.

Say goodbye to constant crack filling and other wall repairs, before repainting.

Cracked walls will compromise the sound insulation of your rooms

Rhinowall's superior sound reduction index easily blocks out 47 decibels.

These walls stop the same amount of sound as plastered 110mm brickwork and can be upgraded to 220mm brick performance with Rhinocoust insulation.

The wall is the least of the potential paths for noise. Areas of concern are: door frames, window frames and ceilings.

Brickwork is seldom straight; this leads to gaps that allow sound to pass through. Because Rhinowall is straight, it doesn't compromise acoustics.

Many multi-screen cinema complexes use special drywall for soundproofing.

Rhinowall does not transmit or lose heat, so your walls feel warmer in winter and cooler in summer.

The superior insulation that these walls offer will reduce the cost of your winter heating bill.

Rhinowall is classified as rodent proof. It will last the life of the building when used under normal residential conditions.

Renovations are done in less than half the time needed with brick walls.

Rhinowall is easily cut with a stanley knife. Boards are easily handled by two people.

Smooth finish, better than one done by a professional plasterer.

30 kg/square m instead of 400 for brickwork.


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