Step 3 – specification saint-gobain product series

As we review the material specification of Stand 47 further, in this post we take a look at some of the Saint-Gobain materials that we will be using in the walls and ceilings.

Gypwall activ’air

Floor finishes on the project include parquet flooring which require sealants / finishing materials that release VOC’s. Activ’Air helps mitigate and improve the indoor air quality that would otherwise be compromised by building materials. With the accommodation schedule set out, it is important to consider the health and well-being of inhabitants. 

–   Converts VOC’s* (Volatile Organic Compounds) and other pollutants into inert compounds.
–   Passively improves indoor air quality.*
–   Removes 70% of aldehydes from the air even after several renovations.
–   Provides up to 50 years of VOC absorption, based on tests and analysis.
–   Can be used with most water based acrylic and breathable wallpaper .
–   More effective in reducing VOC’s than additional ventilation.
–   Ideal for buildings with stringent air quality requirements: Residential, Educational, Health Care.

* What are VOC’s?
Volatile organic compounds (VOC’s) are hydrocarbon compounds that evaporate easily. With some of them, harmful effects on health have been demonstrated. 3 out of 4 VOCs contained in indoor air are aldehydes.

* Factors affecting indoor air quality:
Unsealed plywood or / Urea Aldehyde foam insulation / treated fabrics
Glues / carpets and furniture / carbonless copy paper, computers, copiers and printers / cleaning materials / paints, solvents, adhesives.

Gypwall moisture resistant

–   The core of the board is impregnated with water repellent additives 
–   Suitable for use in areas like bathrooms and kitchens.
–   Suitable base for tiling wet areas like showers. Adequate waterproofing must be included. 
–   Isover Cavitybatt insulation helps reduce sound transmission in bathroom areas.
–   Continuous beads of SoundSeal are applied between building structure and framework to reduce sound transmission.

Gypwall duraline

–    GypWall DuraLine drywall systems have a duty rating established in accordance with all the full requirements of BS5234. This rating relates to the strength and robustness characteristics of a drywall system against specific end-use applications.
–    Single layer 60min fire resistance to SANS 10177:2
–    Four duty rating Categories.
–    Major circulation areas for example corridors and stairwells.
–  Designed for use in areas that require greater impact resistance and an increased level of robustness. 

Gypceil prestige s (board)

–    9.5mm thick RhinoBoard used, with cross tees spaced at 40mm apart to eliminate sagging due      to skimmed finish. 
–    Constructed with a T37K screw up ceiling grid
–    Easy Clip installation
–    Cross tees are reusable – manually moved 
–    Cross tees can be removed by twisting No tools required.
–    Convenient punch out for easier thread-through wiring
–    Framework aligns true in large installations.
–    Provides a high quality aesthetic with concealed ceiling framework.
–    Skimmed with Gyproc RhinoLite for smooth finish and enhanced aesthetics. 
–    Uniform skimmed finish provides flexibility to building design. Concealed ceiling grid allows for future space planning to be more flexible and without restrictions from ceiling grids.

Gypceil prestige s (steel brandering)

Brandering is the frame that creates the structure for the drywalling to be placed on. The following characteristics are to be found with the Gypceil brandering specified at Stand47:

–    Steel brandering framework has been designed to replace timber brandering.
–    Easier handling + cutting, lightweight building material – quicker construction.
–    Quick and easy levelling.
–    Guaranteed straightness of long sections.
–    Reduced waste due to availability of different lengths.
–    Improved accuracy.
–    Gyproc Sharp Point Screws 25mm spaced 150mm secure boards to framework, providing a much more positive fix as opposed to nails.

Step 3 – specification benefits of saint-gobain drywalls

Our choice for using Gyproc Drywall Systems in Stand 47 is motivated by these benefits:

–       Locally sourced & manufactured materials.
–       Easily adaptable for renovations, less waste of materials.
–       Lightweight building systems save on foundation costs and reduces structural load.
–       Accommodates services with minimal mess or chasing (within the cavity).
–       Drywall framework service holes accommodates routing of electrical services.
–       Light weight building materials equals reduced construction time, reduced transportation loads and cranes are employed for reduced periods of time.
–       Cleaner construction site in comparison to brick and mortar.
–       Neat finishes and accurate – steel framework will not warp or twist like timber.
–       Achieve heights over 8m without columns or buttress. (Brick walls would require bracing)
–       Gyproc Plasters use less water than sand cement plasters.
–       Can withstand a limited degree of moisture.
–       Superior thermal performance with minimal partition width. 
–       Systems are SABS and SANS compliant for acoustic performance and fire resistance. 
–       Drywall systems can achieve a fire resistance of up to 180min.
–       Boards can be quickly secured for guaranteed system performance.
–       Framework surface indentations make screw location easier and reduce slip.

Home channel snippets of Stand 47

The snippets featuring our interview with Home Channel about aspects of Stand 47 will be aired on the following days and times…

17 Apr 13 

18 Apr 13 

19 Apr 13 

20 Apr 13 

21 Apr 13 






Off the grid!

A few days ago we got an email from one of our readers Brad Clark, who designed and built a composite off grid house for himself using similar technology to ours. We found the design extraordinary in the context of what it has set out to achieve…and best of all? It is a proudly South African example of innovation.

Located on a farm in Gauteng, among the ‘green features’ that have been designed for the house, it also contains a small organic veggie farm, an eco-pool, a tennis court made out of recycled car tyres, as well as some Nguni cows. 

Alternative energy technologies used in the house include 30 PV panels arranged in two arrays of 15 panels. They can be seen quite clearly in some of the photographs. Each array has its own controller leading to a battery bank of 12 batteries with a single inverter. They supply enough power to run all the lights and appliances in the house.

Hot water and cooking energy is received from LP gas although a two plated biogas cooker is also being used. A by-product of having Nguni cows means that there is a lot of biogas available, so the owners are in the process of adding a bio gas hot water system to the mix.

In winter the house is heated by means of two fire places that are fired with timber from a lot of exotic trees on the farm that are being gradually replaced with indigenous trees. The house has been designed to have insulation in the floors, ceiling and walls and curtains are lined with neoprene to give that extra bit of insulation around the windows.