 The
Finnforest Finnseal is a machined and treated timber product, designed
to be fitted to the end of
the Finnjoist to provide a fast, simple and efficient
solution to the requirements of the Building
Regulations.
The
Finnseal is machined to provide a secure fit when nailed to the end of
the Finnjoist.
The
Finnforest Finnseal is supplied treated to provide a shield to the
Finnjoist in the event of elevated
moisture levels in the cavity.
The
Finnforest Finnseal removes the need for sealing around the perimeter of
the I-Joist
with mastic.
The Finnforest Finnseal is accepted for
use in external walls by both the NHBC and Zurich. The Finnforest
Finnseal has been assessed to provide compliance to parts A, B, E &
L of the Building Regulations (Structure, Fire, Sound and Air Leakage).
AIR LEAKAGE
The Finnforest Finnseal has been
tested for air leakage by CERAM (Report SW045/05) in depths of 220, 240
and 300mm and widths of 38, 45, 58 and 89mm. This detail has been
shown to the almost twice as effective as some currently accepted
methods of demonstrating compliance to the requirements of Part L.
FIRE
The Finnforest Finnseal has been
assessed by Chiltern Fire (report FEE/F05012) as providing an adequate
fire stop for use in both external and party walls.
SOUND
When using the Finnforest
Finnseal in a party wall situation, it is necessary to refer to the
information provided by Robust Details Ltd. The Finnforest
Finnseal can comply with the details provided in the section 'Separating
Wall-Cavity Masonry' details E-WM - 1 to 6. Please also refer to
appendix A regarding proprietary joist caps/ends.
WORKING PLATFORM
Provided the Finnforest safe
loading chart is followed, there is no need for additional propping to
the floor during construction. Should Finnseals be used in
conjunction with Masonry Hangers, it will be necessary to contact
Finnforest or the hanger manufacturer for further information.
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