FLOOR
Designers looking to specify any floor or soffit to meet or exceed NCC/BCA energy efficiency for
buildings of any height.
Selecting the correct insulation type and thickness needs to be carried out in conjunction with the thermal
assessment either using the deem to satisfy or JV3 modeling.
We provide a guide to insulation types and thicknesses to allow the designer to control the space required
and the position to meet requirements such as condensation, waterproofing, thermal bridging,
airtightness, fire and acoustic performance. Final approval must be sort by the authority having
jurisdiction using test and engineering documentation provided by the manufacturer.
* There are situations where floor insulation can retain heat in summer in buildings that intermittently
use HVAC.
To understand where each product can be installed please ask for a CPD presentation or see our case
studies for examples of how our product has been specified and installed. Please check the space
required fits with your overall thickness available.
Specification
Manufacturer's documents distributed by Integra Building Products and De Silva Solutions, products are
made from imported and locally produced components.
- DeSilvaLine by Pirmax made in Australia
- Brownie by Ecowool
- DePolyLine XPS by Foamex Styroboard XPS made in Australia
- Fullers Toolbox made in Australia
- PPC foil tape made in Australia
- Brownie by Ecowool
- DePolyLine XPS by Foamex Styroboard XPS made in Australia
- Fullers Toolbox made in Australia
- PPC foil tape made in Australia
Where an alternative installation method has been tested and approved by a third party test lab, please
find the installation guide at www.integrabuildingproducts.com.au/products
Under suspended framed floors - bulk insulation
Product: Brownie by Ecowool
Description: Brownie Glasswool the formaldehyde free range of ECOWOOL-Brownie glass mineral
wool insulation manufactured by PGF Insulation employs formaldehyde free binder that is free of
formaldehyde, phenol or any other artificial chemicals.
Batts: Fit tightly between framing members. If support is not otherwise provided, staple nylon twine to
the framing and stretch tight.
Suspended Floor Vapour Barrier and Thermal Break- rigid board (Climate Zone 4-8)
Product: DeSilvaLine PIR [20/25mm]
Description: DeSilvaLine PIR is a modified polyurethane (PIR-polyisocyanurate) rigid foam board with
reflective pure foil facer either side of the PIR core. The product is suitable for use as an airtight layer
fitted below the framed and suspended ceiling.
WARNING: This product can not form any part of a fire resistant construction where an FRL is
required for the ceiling.
Fixing: In conformance with DeSilvaLine installation guide recommendations.
Airtight Layer : If used as a sarking membrane, overlap joints by 50 mm and adhesive tape.
Below concrete slab on ground
Product: DePolyLine XPS by Foamex /DeSilvaLine by Pirmax
Description: DePolyLine XPS is a extruded closed cell rigid insulation board which will resist water uptake
and has a compressive strength between 200-350 kPa. It is used as thermal insulation above or below
waterproof roof membrane systems.
Description: DeSilvaLine PIR is a modified polyurethane (PIR-polyisocyanurate) rigid foam board with
reflective pure foil facer either side of the PIR core. The product is suitable for use as thermal insulation
below roof membrane systems.
Preparation: Provide blinding layer eg sand.
Separation Layer : Lay over binding with edges lapped 300 mm and turned down into footings and
penetrations or to waterproofing detail.
Installation : Lay insulation boards in brick pattern with shiplap edges pushed together firmly where the raft
slab will sit, cut neatly around penetrations (eg. piles) and do not extend into horizontal footings unless
approved by structural engineer.
Over concrete slab on ground
Product: DePolyLine XPS by Foamex /DeSilvaLine by Pirmax
Description: DePolyLine XPS is a extruded closed cell rigid insulation board which will resist water uptake
and has a compressive strength between 200-350 kPa. It is used as thermal insulation above or below
waterproof roof membrane systems.
Description: DeSilvaLine PIR is a modified polyurethane (PIR-polyisocyanurate) rigid foam board with
reflective pure foil facer either side of the PIR core. The product is suitable for use as thermal insulation
below floor heating with suitable topping slab or engineered floor finish systems.
Application: Under slab heating.
Substrate preparation: Make sure substrates are as follows:
- Clean and free of any deposit or finish which may impair adhesion or location of tiles.
- Excessive projections are removed.
- Voids and hollows > 10 mm with abrupt edges are filled with a cement:sand mix not stronger than the substrate nor weaker than the bedding.
Extent : The entire heated slab.
Laying Pattern : Stretcher bond, with edges tightly butted.
Subsequent finishes: [complete/delete] must be designed within the compressive strength of foam, to
structural engineers specification
Under suspended concrete slab / Car Park Soffit
Product: DeSilvaLine by Pirmax
Description: DeSilvaLine PIR is a modified polyurethane (PIR-polyisocyanurate) rigid foam board with
reflective pure foil facer either side of the PIR core. The product is suitable for use as thermal insulation
below concrete floor systems.
Use where slab incorporates in-slab heating or the slab separates a conditioned space from an
unconditional space.
Fixing: In conformance with DeSilvaLine installation guide recommendations.
Joints : Apply 72 mm reinforced foil tape to all joints.
Over framed suspended floors
Product: DePolyLine XPS by Foamex /DeSilvaLine by Pirmax
Description: DePolyLine XPS is a extruded closed cell rigid insulation board which will resist water uptake
and has a compressive strength between 200-350 kPa. It is used as thermal insulation above or below
waterproof roof membrane systems.
Description: DeSilvaLine PIR is a modified polyurethane (PIR-polyisocyanurate) rigid foam board with
reflective pure foil facer either side of the PIR core. The product is suitable for use as thermal insulation
below floor systems.
Fixing: Foam is compressable and may be best installed between battens.