
All timber products
Features:
Swedish &
Finnish Redwood
from managed
forests
3 and 5 part
laminated timber sections
Vacuum impregnated
with preservative treatment
60 Year Design
life
Wood is a living material and is
affected by changes in the weather. Temperature and humidity variations cause
the timber to expand and contract. Unless this movement is allowed for in the
design, windows and doors can take on their own lives with consequent problems
in closing and sealing. You have probably experienced this with windows and
doors being hard to close in the winter and long spells of wet weather and
drafts in the summer and long spells of dry weather.
To overcome this all of our windows and doors are made from laminated Swedish
redwood. The wood is sawn into thin sections and glued together to make up the
frame members. This process provides greater strength, and evens out the
stresses in the timber which in turn reduces the risk of warping and results in
a construction which is strong, stable and durable.
Our Oslo timber products are made
with laminated sections containing 2 sections of spruce to the outer 2 pieces
and pine to the inner. The spruce has a more coarse grain, which in turn is more
resilient to harsh weather. The pine on the inside is a slower grown variety
offering a tighter grain that is sanded down to a higher level – after all you
will spend the majority of your time looking out of a window, not in!
To prevent rot and decay, the finalised sections undergo a vacuum impregnation
treatment, with clear preservative, which can then be over coated with a
micro-porous paint or stain finish, either in the factory, or by the customer on
site. Site finishing must be done in clean, dry conditions and prior to
installation in the building.
Other products such as the Sunflex
SF65 range and the Olsen range are manufactured with pine throughout as these
are regarded as luxury items, requiring a finer finish both inside and outside.
Wood is an ideal material to
manufacture windows due to its high level of natural insulation. When combined
together with high performance double or triple glazed units outstanding
U-values can be achieved.
|
Glazing type |
Glass unit only |
Timber + glass overall |
|
4/6 – 15 air – 4/6mm |
1.4 W/m2K |
1.6 W/m2K |
|
4/6 – 15 Argon – 4/6mm |
1.1 W/m2K |
1.4 W/m2K |
|
4/6 – 15 Krypton – 4/6mm |
1.0 W/m2K |
1.3 W/m2K (Estimated) |
|