Frequently Asked Questions:
Q: What are the dimensions of your Underfloor Insulation?
A: Each PACK contains 3 ROLLS of premium R2.5 Polyester Insulation
One pack measures 1350mm (height) x 700mm (diameter), and weighs 24kg
Each roll is 10 meters (length) x 450 mm (width) x 140 mm (loft/thickness)
An entire pack covers 13.5 m2 and will be delivered as vacuum packed
Q: What is the standard Price per m2 on UFI?
A: One pack costs $144 and covers 13.5 m2. That’s just $10.67 per m2.
Q: How is it installed?
A: We install the insulation by stapling every 100mm to the bottom (lower edge) of the floor joists. This installation method ensures a tight fit with no chance of sagging, drooping or falling out. Please be aware that most standard joist depths are 90mm deep and the insulation is 140 mm thick this means that there is a little bit of pillowing - stapling every 100mm - 150mm will ensure it stays put and does the job!
Q: What stapler to use?
A: Using an electric stapler is something that we cannot stress enough for your safety due to the fact it will be double insulated, this means on the chance that you happen to hit an electrical wire it will not be a fatal accident. Also, if you have to staple more than 800 times for one pack, I can almost guarantee that your hands are going to hurt!
Q: How many staples do I need?
A: For best result, choose 10mm galvanised staples, and allow about 800 staples per pack of insulation.
Q: What staples to use for very hard wood?
A: The staple we have used through trial and error is the T50 Arrow 10 mm staple. These are available on our webstore. It staple leg length is long enough to ensure that it collects the desired amount of insulation, pierces the timber and holds in the stubborn hardwood floors.
Q: What clearance do I need under my floor?
A: A minimum clearance of 400 mm is needed for a smooth installation. This clearance allows enough room for one installer and Insulation and a comfortable distance (as comfortable as you can be!) from you to the floor.
Our standard sizing and joist width is found by Clicking HERE.
To make sure that your insulation fits no matter how wide or narrow your joists are, Click HERE
Q: How much improvement would it make?
A: Without underfloor insulation, your floorboards are the same temperature as outside, this is due to the floorboards rating is R0.7.
With carpet and a great underlay, the rating is R1.0 and for many people an additional R0.3 is noticeable.
When you add our underfloor insulation to your home, your floor will have a minimum rating of R3.2 with a timber floor, or R3.5 with carpeted floor.
With underfloor insulation installed, your floorboards are the same temperature as inside!
Q: Is there a noise reduction benefit?
A: All insulation has an acoustic benefit due to its density. Although, if you are after an acoustic performing batt, please be aware that the Sound Solution also comes with the highest R rating of R2.5.
Q: Does wind affect the effectiveness of underfloor Insulation?
A: Our underfloor insulation has a dense face which we ensure is facing downwards. Apart from being better for stapling through it also reduces wind penetration of the insulation. Unless your underfloor is extremely windy, the wind will not penetrate into the insulation. In extreme circumstances you can either line the underfloor perimeter with bargeboards or line under the joists with Aircell Retroshield.
Q: What is our fire rating standard and how does it hold up against other products in this standard?
A: It complies with all fire rating standards. It is not legal to sell insulation in Australia that will carry a flame. We have a video on our YouTube Channel that shows our Technical Director trying to burn it with a blow torch.
Q: How about for the product installation, do you have a warranty for it?
A: As it is a DIY product, we cannot provide an installation warranty, as the installation process is outside of our control.
Q: Can I cut the Greenstuf Underfloor insulation?
A: Manipulating our underfloor installation can be quite easy due to the manufacturer designing it to have a strong integrity when it is rolled out. If it is laying across you it is a LOT easier to tear as seen HERE. If using the turn and tear method is not something that you were interested in you are able to cut our installation with a fine metal cutting blade attached to a circular saw.
PLEASE NOTE This method may not be desirable due to the waste that will inevitably be produced and also reducing the coverage that the underfloor insulation pack will provide.
Q: Why leave the power on when Installing?
A: We recommend leaving the power on due to the convenience it will provide if you accidentally snag an electrical wire. It will also allow convenience of using corded light sources and staple guns.
Q: Do the staples rust?
A: Using the recommended galvanised staples, the staples will not rust due to the metals production process and being corrosion resistant.
Q: How long does it take to deliver?
A: That depends upon your location. Please call us on 1-300-326-627 for an indication.
Q: Can we refund the un-used packs?
A: We do NOT have the ability to receive un-used packs. This is a special order with the manufacturer. If you have excess stock, it can be installed in your roof as extra insulation, make cushions or cat / dog beds.