Expert Insights for
Contractors & Builders

James Hardie offers 19 ColorPlus colours through dealers in Newmarket and the GTA, but not on every part of the house. All 19 come on siding and battens, 10 on trim and 5 on soffit. This guide sorts the palette by how far up the wall each colour reaches, then by light and dark, warm and cool.

Comparing gutter guards by their holes gets the order backwards. Under Ontario's white pines the decision starts with the warranty, because the single-layer guards exclude clogging caused by conifers and the dual-layer guards cover it for life. Then the gutter decides the rest.

Both hang on a nail and neither needs a mason. But one nail is driven flush into a cement panel that must never move, and the other is left a sixteenth of an inch proud in the middle of a slot so the panel can grow. The sheathing, the strapping, the fastener count, the weight and the code paper all follow from that.

Mitten prints a calculation chart that turns a home size and a skirting height into pieces, and it is accurate. It is also only half the order. The other half is ventilation, which the chart footnotes twice and never answers. This is the sizing math, the Ontario crawl space rule, and where the vents have to sit.

The envelope shelf holds products rated from 0.05 to 59 perms, a spread of more than a thousand to one, and that single number decides whether a material belongs on the warm face of the wall or the cold one. This guide sorts every house wrap, flashing and foam board we stock by permeance, sets each against the Ontario Building Code clause it has to satisfy, and works the roll count out on a real Newmarket re-clad.

A carton of soffit covers about 192 square feet no matter which panel you pull off the rack. What changes is how much eave that finishes, and the answer is set by your overhang depth, not by the product. This is the counter view of a soffit order: panel widths, carton yields, the vent split that forces an extra box, the trims nobody prices, and what the pair actually costs installed in Ontario.

Cellular PVC trim ships with an installation table keyed to the air temperature on the day you cut it, and the two brands we stock publish different tables. This guide sets both schedules side by side, maps them onto the Ontario calendar, and works out how many linear feet of trim a real Newmarket house actually needs.

Siding cost is quoted in one unit and paid in four. This pillar prices all eight materials we stock per square foot, then rebuilds the number as a real invoice on a 1,992 square foot Newmarket re-clad, and finishes with the thirty year figure that reorders the whole ranking.