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Polystyrene Product Company

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Order Polystyrene Nationally Online, Direct From Factory, Or Request A Bulk Buyer / Building Contractor Quote Via Email Today

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Polystyrene - Johannesburg

011 678 5626

Polystyrene - Cape Town

 

021 200 5926

Polystyrene - Durban

031 940 7056

Polystyrene - East London & PE

087 095 3259

National Email

sales@polystyrene.co.za

PolyRoof - Concrete Roof Insulation Boards

SKU 35PRJHB20DV
R242.55
Order online before our special ends!
In stock
1
Product Details


Order PolyRoof - Concrete Flat Roof Insulation Directly Online Today!


The Cost Effective Way To Insulate Your Concrete Roof Slab In South Africa!


Store Prices:



Current Retail Prices Per m2 (Excl. VAT):


  • There are too many variations to document the per m2 for each thickness and region.
  • That said, it is very easy to calculate the per m2 rate. Just divide the board price by 3!
  • You will find that this is an extremely cost effective product for this application.


PolyRoof - Above Concrete Roof or Inverted Roof Insulation


PolyRoof Insulation is a very cost effective way to insulate concrete roof slabs and protect the waterproofing layer at the same time. It is both an insulation board and a waterproofing protection system.


In South Africa, concrete roof slabs that are exposed to the elements attract significant heat and cold in our summer and winter months respectively. If not insulated properly, concrete slabs can easily reach summer temperatures of 40 degrees and this heat is then transferred into the living or working areas of the building below. PolyRoof Insulation Boards stop the heat and cold from reaching the concrete roof slab ensuring that the slab remains at ambient temperature.


The Inverted Roof Applications Explained


  • First the concrete slab is cast with a screed to fall sufficient to ensure proper run-off.
  • The torch-on or other waterproofing system is then applied the the concrete roof slab.
  • Our PolyRoof insulation Boards are then cut and placed tightly on top of the waterproofing layer.
  • A filter fabric (that we can supply) is then place on top of the PolyRoof Insulation Boards.
  • A stone or paving layer is then placed on top of the filter fabric to ballast the system.


SANS 10400 Part XA Building Requirements For Buildings:


Concrete Roof Insulation is a building requirement, in terms of the SANS 10400 Part XA Building Regulations in South Africa. There are different insulation requirements depending on where your project is in South Africa.

The table below defines the Thermal Insulation (R-Value) requirements, for any roof, by region, in South Africa. This is the R-value of the entire roof system including ceilings.


Zone Locations Thermal R-Values
1 Johannesburg, Bloemfontein 3.7
2 Pretoria, Polokwane 3.2
3 Makhado (Luois Trichardt), Nelspruit 2.7
4 Cape Town, Port Elizabeth 3.7
5 East London, Durban, Richards Bay 2.7
6 Upington, Kimberley 3.7


Deemed - To Satisfy Design Requirements For Buildings:



In some cases, existing buildings can be insulated on Deemed-To-Satisfy design principles. Where the deemed-to-satisfy principle are acceptable lower insulation value requirements may be justifiable. Please consult with your architect to see if this principle applies.

In order to meet thermal requirements certain thicknesses or PolyRoof Boards will be required. Generally new builds require the SANS 10400 Part XA regulations to be met.


PolyRoof Board Thicknesses & Thermal Insulation R-Values:


Board Thickness Thermal Insulation (R-Value)
35mm 1.000
40mm 1.143
50mm 1.429
75mm 2.145
100mm 2.857
120mm 3.429
150mm 4.286
200mm 5.714
300mm 8.571


PolyRoof Board Densities & Compressive Strength:


PolyRoof Insulation boards are sold in high density or preferably extra high densities to ensure the least amount of water absorption and compressive strength requirements are met.

  • It is best to consult with your engineers and architects to determine which density and thicknesses are best suited to your requirement.
  • Please be advised that low and medium density products will fail in this application.


Type Density Compressive Strength
High Density 20 kg/m3 110 KPa @ 10% Compression
Extra High Density 24 kg/m3 to 30 kg/m3 160 to 200 kPa @ 10% Compression


Manufacture & Supply:


PolyRoof Insulation is manufactured locally in South Africa and distributed nationally from our regional factories in:

  • Johannesburg
  • Cape Town
  • Durban
  • East London
  • Port Elizabeth

We also export our polystyrene sheets, blocks and other products to certain countries in Africa, based on order volumes.


Order Process:


  • Add the products and quantities you want to you order.
  • Select delivery or request a delivery quote if your location is not covered.
  • Submit your order for review
  • We will then call you to review your order or discuss delivery costs with you.
  • You will then approved the order or not.
  • We will then cut your order and deliver it.
  • Fast & Easy!

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Our Recent Notable Polystyrene Related Projects

Cape Town Convention Center Extension Concrete Roof Insulation Project

1400m2 of 120mm Extra-High Density Concrete Roof Insulation (PolyRoof Insulation) Laid On Top Of Torch-On Waterproofing With Paving Overlay

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Nelson Mandela Children's Hospital Raised Slab Project 

3000m2 of 50mm Extra-High Density Concrete PolyVoid Fillers To Raise An Existing Concrete Slab By 1m. Extra-High Density Polystyrene Has Incredible Compressive Strength Properties.

PolyVoid - Structural Fill Blocks.jpg
 

Polystyrene Product Company

When You Need A Reliable National Supplier Of Polystyrene Sheets, Insulation, Thermal Ceilings, Void Formers & Decking Blocks In South Africa Or For Export!

We Love To Assist!

National Sales & Head Office

 

Unit 8, Lower Ground Level, Commercial City, Tungsten Rd, Strydompark, Randburg, 2194

VAT Number: 4220273447

CO. Reg Number: 2016/072709/07

Main Office Number:

011 678 5626

 

Main Email: sales@polystyrene.co.za

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By Polystyrene Product Company