Archive for November, 2010

Ask This Old House, Episode #905

Building a wheelchair-accessible garden bed
Original Air Date: Week of November 4, 2010

Landscaping contractor Roger Cook builds a raised garden bed that is accessible by wheelchair. He used landscape timbers infused with glass that are resistant to rot and insect damage.

TimberSIL glass-wood planter box

TimberSIL glass-wood raised planter box










TimberSIL wood Authorized Dealers

(866) WOOD-551


Greenhouse built with Glass Wood

Tucson, AZ
TimberSIL® wood really is the perfect material for building a greenhouse. TimberSIL’s non-toxic resistance to rot and insect damage makes it very attractive to those with a green thumb.

There are only a couple options on the market that give the strength and beauty of natural wood while being able to resist decay.  Old grown heartwood Redwood and Cedar are known to have a natural resistance to decay. Sadly, most of the old growth forests have been wiped out and today’s Redwood and Cedar are less resistant than they used to be 20-40 years ago.  The younger  juvenile trees harvested today have little to no heartwood, which is much less resistant to insects and rot.

Another option, exotic hardwoods from South America like Ipe or Iron Wood that are extremely hard and dense, these species hold up well and are very strong. Exotic hardwoods come with a very expensive price tag, and most are not sustainably harvested.

Then lastly you have pressure treated wood (PT), wood that uses chemical insecticides and fungicides to preserve the wood from decay. Typically pressure treated wood is green in appearance and is incised with a series of holes which allows the chemical treatment to soak in better. These holes are not very attractive and decrease the strength of the board. You will also have to use specially coated and higher priced fasteners as some the chemicals in the wood can eat right through metal. It is also warned not to use pressure treated wood where the chemicals could come in contact or become a part of food.

TimberSIL® wood is the eco-friendly and longest lasting option.