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Underfloor Insulation Installation
Instructions
The following information is written on every bag of product;
- Number of panels
- Nominal coverage area
- R-Value (Fitted Insulation value)
- Nominal weight
- Installation instructions
- Nominal length, width and thickness of each piece
- Description of contents
- Name and address of manufacturer
- Statement of compliance with the standard AS/NZS
4859.1:2002
- Date of manufacture
Fitting
Ensure you have a sharp knife or saw for cutting and trimming
panels.
Fit panels with the 20mm ridges touching the underside
of the floor.

Select the correct panel width for the correct joist space,
as you might have ordered more than one size.
Trim the edges of the panels if they are oversize, by cutting
one or more of the con-cen-tina edges and always ensure the
width of the panel is over size to create a snug fit between
the floor joists.

Fixings
Non corrosive nylon fixings with a stainless steel nail are
available for purchase ONLY TO SECURE LOOSE PANELS AND TO
SUPPORT PANELS WHERE THE UNDER-FLOOR IS SUBJECT TO WIND. Most
panels will self support between the joists with a friction
fit.

When insulating new floors, nail two fixings at opposite
corners per panel, flush with the top of the joist, the
panel will then sit flush with the under side of the floor.
Pipes and plumbing
To accommodate obstacles such as pipes and plumbing, use
your sharp knife to cut the panel and notch around those difficult
areas. It is acceptable to use a polyeurathane foam material
to seal off the more difficult areas. This product is available
from most Hardware stores.
To retain maximum insulation, ensure all air gaps are sealed
around the out side perimeter
Electrical cables
CAUTION: ELECTRICAL CABLES AND EQUIPMENT PARTIALLY
OR COMPLETELY SURROUNDED WITH BULK THERMAL INSULATION MAY
OVERHEAT AND FAIL. THIS APPLIES TO WIRING INSTALLED PRIOR
TO 1989. READ THE FOLLOWING INSTRUCTIONS:
For cables installed prior to 1989 ensure all insulation
is fitted leaving the cables exposed.
If fitting around down lights or other electrical appliances,
leave a 150mm clearance around the appliance.
To separate all other electrical cables from Expol under-floor
insulation use Expol wireguard. Wireguard can be purchased
in 20metre rolls.

Utilise your waste
If you are left with product over, instead of burning or
dumping, why not insulate another area in your home, such
as your hot water cupboard or ceiling where insulation may
have been removed.
If you have small scraps left, break into pieces the size
of your thumb nail and mix with the soil in your pot plants
to aid drainage and root growth.
Recognised installers
If you would prefer to have Expol under-floor Insulation installed
by a recognised installer, find an installer
near you.
BRANZ
Appraisal
Expol Under-floor Insulation has been appraised by BRANZ
and complies with Certificate No. 256 (2006).
Please refer to the certificate for further technical information.
Copies of the BRANZ Appraisal are available by calling our
toll free number Phone 1-800 Under Floor, 1-800-86-33-73,
or by downloading
here.
Insulation standard
Expol Under-floor Insulation complies with the Australian
and New Zealand Standard AS/NZS 4859.1:2002.
Manufacturing
standard
All panels have a yellow stripe down one edge to confirm
compliance with manufacturing standard AS 1366 Part 3 1992
for SL grade
These instructions were updated 1st July 2007
We at Expol trust that for years to come, you will enjoy
the benefits of fitting Expol Under-floor Insulation beneath
your home.
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