Trans Canada Wood Products is proud to supply its customers with an Acoustic Fencing Product that is:

• Naturaly Decay Resistant

• Dimensionally Stable In-Service
  
  
• Produced to High Quality Standards
  (NLGA Grading Rules - Grade Stamping available upon request)
  

NORTHERN WHITE CEDAR ACOUSTIC FENCING

The purpose of an acoustic fence is to provide a comfortable outdoor living environment to individuals adjacent to a noise source area. Specific Ontario Ministry of the Environment (MOE) requirements for sound barriers include a minimum surface density of 20 kg/m2, a designed and constructed fence with no cracks or gaps, and only localized gaps under the fence to allow for drainage.

Trans Canada Wood Products Ltd. has introduced an acoustic fence made of NORTHERN WHITE CEDAR. To ensure this new species would perform to MOE surface density standards, Trans Canada Wood Products retained the services of SS Wilson Associates to review some aspects related to the acoustic properties of Northern White Cedar.

Briefly, the test results show that a 21/4" infill board section will provide the required MOE surface density of 20kg/m2.

Northern White Cedar is found in most eastern provinces and has a light brown heartwood and a sapwood that is nearly white. The texture is fine and even, the grain is usually straight, and the growth rings are not prominent. The wood has a pleasant aromatic odour and weathers to a silvery sheen with inconspicuous checks. A book titled "Canadian Woods, Their Properties and Uses" states that Northern White Cedar has superior decay resistance and is one of the most durable species in Canada. Other references confirm this natural durability and resistance to decay.

  A technical report published by Forintek Canada's Eastern Forest Products Laboratory titled "Strength and Related Properties of Woods Grown in Canada" indicates that Northern White Cedar has a total volumetric shrinkage of 6.4%. This is over 15% less shrinkage than a comparable species, Western Red Cedar. In a book titled "Limit States Design of Wood Structures" authored by F.J. Keenan, it suggests that radial checking is expected in species with:

1. high specific gravity;
2. high ratio of tangential to radial shrinkage (St/Sr);
3. low tensile strength perpendicular to the grain.

A review of this data shows that Northern White Cedar and Western Red Cedar have comparable properties, as follows:

Based on these properties as the main factors which will effect radial checking,   fence boards of Northern White Cedar and Western Red Cedar will perform equally in exterior inservice conditions. In summary, good dimensional stability combined with excellent natural decay resistance will ensure that acoustic fences built of Northern White Cedar will provide the durability required inservice.

Trans Canada Wood Products sources the product locally which results in material savings when compared to competing cedar products. In addition, because material supply and processing are local, Trans Canada Wood Products can ensure each order is delivered in a timely fashion, minimizing any construction delays for our customers.

Northern White Cedar
acoustic and privacy fencing
is a superior grade
wood product.

Used for hundreds of years
in North America it has
proven a match for sun, rain and
even blowing sand.

Easily recognized
as it weathers to a characteristic
soft pewter colour,
as opposed to the dark grey
or black of its red  cedar
relatives, this light weight
wood is easily worked,
and very durable.

Northern White Cedar Trunk