Wood — Loewen Windows


Traditional Beauty, Endless Variety

Bruns Architecture – Fieldstone House

Loewen Wood products feature only* Coastal Douglas Fir or plantation-grown Mahogany in our frames and sashes. These woods do more than just give our windows a rich, warm texture – they’re also naturally tough and resilient, yet remarkably workable, meaning they are ideal for precision milling and capable of holding the smallest, most intricate detailing.

To enhance our woods’ high natural resistance to moisture absorption, decay and insect infestation, every Loewen wood component is treated with a water repellent, wood preservative before assembly.

Douglas Fir is North America’s most plentiful softwood species, accounting for one-fifth of the continent’s total softwood reserves. It is beautiful and durable, making it the ideal species for fenestration and a hallmark of the Loewen all wood offering.

Versatility is one of the key elements in the Loewen product offering – there are endless possible combinations of standard Loewen products.

* Alternate species are available in our Custom offering

Douglas Fir Durability

Douglas Fir outperforms Hemlock & Pine

Wood Species Specific Gravity (density) Impact Strength (height of drop causing complete failure) Compression Strength (parallel to grain) Compression Strength (perpendicular to grain) Hardness (load perpendicular to grain) Resistance to Decay
Weight Over Volume Inch psi psi lbs USFS Grade
Douglas Fir 0.48 31.0 7,230 800 710 Moderate
Mahogany 0.42 Untested 6,460 1,500 830 Resistant
Western Hemlock 0.45 23.0 7,200 550 540 Slightly to
Ponderosa Pine 0.40 19.0 5,320 580 420 Slightly to

Douglas Fir Fastener Retention

This chart shows the force required to remove fasteners

Wood Species Nail Screw Hinge
Douglas Fir 189 lbs 527 lbs 743 lbs
Ponderosa Pine 98 lbs 392 lbs 486 lbs