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Frequently Asked Questions


  1. Is ACQ treated lumber toxic?
  2. What fasteners should I use with ACQ lumber?
  3. What type of wood and sizes do you offer for scroll saw hobbyists?
  4. How is Plywood graded?
  5. What is the difference between a linear foot and board foot?
  6. What is the difference between hardwoods and softwoods?
  7. Why does birds eye occur in different kinds of wood?
  8. What determines the dimensions of lumber?
  9. How do I fix a squeaky hardwood floor?
  10. How do I get the inside corner cut to match up when installing the crown moulding?
  11. How do I join lengths of mouldings?
  12. At what height is chair rail moulding normally installed?
  13. How do I repair a split in wood furniture?
  14. When redecorating a room, should the baseboards be left on or off?

Is ACQ treated lumber toxic?
ACQ lumber is safe when handled properly and presumed to be non-carcinogenic. However, acq treated lumber has a corrosive effect on most metals.

What fasteners should I use with ACQ lumber?
Certain metal products (including fasteners,hardware, flashing and railings) may corrode when in direct contact with ACQ treated wood products due to the higher copper content in the new treatment process. ACQ lumber is highly corrosive to the traditional fasteners you would have used previously with CCA lumber. It is important to only use ACQ approved metal products, such as Stainless Steel Screws and Hot-Dipped Galvanized Bolts and Joist Hangers.

What type of wood and sizes do you offer for scroll saw hobbyists?
The ideal wood for scroll saw work is Baltic Birch. This special plywood is constructed with more veneers per unit of thickness than other types of plywood. Manufactured in Europe, this panel is ideal for routering, scroll sawing or for applications requiring high stability. It is available in 5' x 5' sheets and in metric thicknesses of 3mm, 6mm, 12mm, 18mm and 24mm. We also sell 1/2 (30x60) & 1/4 (30x30) sheets if you don't require as much.

How is Plywood graded?
SHEATHING: Generally broken into 4 grades. SELECT: Should be solid face, can allow some veneer splits, no wider than 1/16” knots are allowed, but must be sound and tight, not more than 1-1/4” in diameter. STANDARD: Face will be made from “C” veneer, can have knot holes in face thru 1st layer of veneer only, knots are limited to 1-1/4” in diameter. D GRADE: All fall down from above, including some face or back veneer missing or loose. CULL: Allows for any possible imperfections - delamination, off square or miss sized

What is the difference between a linear foot and board foot?
A linear foot is a measure of length 12 inches long, regardless of width and thickness, commonly used in the sale of mouldings and finished smooth four side woods. A board foot is a number calculated by determining the volume of a board that is 12 inches wide, 12 inches long and 1 inch thick (144 cubic inches).In most cases, this size is determined from the woods original state when cut and is referred to as its nominal size. Once the board has been dried, straight-edged and surfaced it arrives at its finished state. In other words, a 1" x 6" (3/4" x 5-1/2") board that measures 2 feet long is exactly one board foot. (width in inches x thickness in inches x length in feet / 12) or (width in inches x thickness in inches x length in inches / 144)

What is the difference between hardwoods and softwoods?
The degree of hardness has no bearing on whether the wood is a hardwood or a softwood. Hardwood is the lumber cut from deciduous or broad-leaved trees that produce enclose seeds such as Cherry, Maple, Walnut, Oak, etc. Softwood is the lumber cut from coniferous or needle-bearing trees that produce free unopened seeds such as the cones of Fir, Cedar and Pine.

Why does birds eye occur in different kinds of wood?
It hasn't been proven conclusively what the actual cause is, however it is known that it only occurs in trees which undergo growth stress from competing with surrounding trees for light and nourishment. Studies have shown that a tree which has developed birds eye at an earlier stage of its life will no longer develop the figuring in future growth if the trees around it are cut down. Nearby maple trees that also developed birds eye continued to do so if the neighbouring fauna was left undisturbed.

What determines the dimensions of lumber?
After surfacing, a board might be reduced by as much as 1/4" on each side but it will still be identified by the nominal width. This is the Erosion. A nominal 2" x 4" (two-by-four) is actually only one and one half by three and one half inches in size. Here are the nominal and actual sizes for most common lumber: A nominal 1" x 2" is actually 3/4" x 1-1/2. a nominal 1" x 6" is actually 3/4" x 5-1/2", a nominal 2" x 4" is actually 1-1/2" x 3-1/2". Most construction lumber is supplied in lengths of eight, ten, twelve, fourteen and sixteen feet.

How do I fix a squeaky hardwood floor?
The squeak is probably in the subfloor over a floor joist. Best way is to run screws into the subfloor through the joint nearest the squeak. If this is awkward, first screw a 2 x 2 to the side of the joint tight to the subfloor, then screw up through the 2 x 2 into the subfloor.

How do I get the inside corner cut to match up when installing the crown moulding?
One piece is butted into the corner and the other is coped to fit around the first. The piece to be coped is cut at a 45-degree angle to reveal the profile. A coping saw is then used, angled inwards slightly, to cut along the profile revealed so that the cut takes the shape of the butted moulding. Once it has been trimmed to fit, the coped piece is installed.

How do I join lengths of mouldings?
When you have to join two pieces of moulding to form one long continuous piece, use an overlapping 45° mitre cut. This is called a “scarf joint”.

At what height is chair rail moulding normally installed?
Chair rail moulding is normally installed at 36" to 42" from the floor.

How do I repair a split in wood furniture?
You can repair the split by using Epoxy Adhesive and clamping it together. The repair will be stronger than the original wood.

When redecorating a room, should the baseboards be left on or off?
When a room is to be redecorated extensively, including new wallpaper and new carpets, it is best to take all the baseboards off. This will allow you to run the wallpaper down the wall so that the baseboard can cover the edge. It will also allow you to strip all the old paint or other finish off the baseboards with a liquid stripper much more easily than left in place. You can also refinish them much more easily. Be sure to label the pieces of baseboard on the backside as you take them off and label the wall below the level of the wallpaper with a Corresponding code. An added advantage of doing it this way is the carpet installers will invariably do some damage to your newly refinished baseboards with their tools if they have to lay new carpet with the baseboards in place.

Windsor Plywood, the experts you need to know!