Solid Hardwood vs Engineered Hardwood: 25-Year Cost

How the solid vs engineered comparison works

A floor has three costs over 25 years, not one: the upfront install, the replacement, and the resale value at the end. Solid is installed once over 25 years — it lasts 25 years or more. Engineered is installed twice over 25 years — at year 0 and again at year 20 — because it lasts about 20 years. Solid is also worth about $4,000 to the house when it sells, while engineered is worth about $2,000; the net cost is the gross cost minus that resale value. Divide by 25 and you have the net cost per year.

At the defaults — 1,000 sq ft, solid $12.00/sq ft installed, engineered $9.00/sq ft installed, solid $4,000 resale, engineered $2,000 resale — the solid upfront is 1,000 × $12.00 = $12,000.00 and the engineered upfront is 1,000 × $9.00 = $9,000.00, so engineered wins upfront by $3,000.00. The solid gross is $12,000.00 and the engineered gross is $18,000.00, so solid wins gross by $6,000.00. And the solid net is $12,000.00 − $4,000.00 = $8,000.00 while the engineered net is $18,000.00 − $2,000.00 = $16,000.00 — so solid wins net by $8,000.00, or $320.00 a year against $640.00.

The worked example, line by line

Setup: 1,000 sq ft; solid $12.00/sq ft installed, $4,000 resale; engineered $9.00/sq ft installed, $2,000 resale; 25-year horizon.

Line 1 — the upfront cost. Solid: 1,000 × $12.00 = $12,000.00. Engineered: 1,000 × $9.00 = $9,000.00. Engineered wins by $3,000.00.

Line 2 — the applications. Solid lasts 25 years or more, so over a 25-year horizon it is installed once. Engineered lasts 20 years, so it is installed twice (years 0 and 20).

Line 3 — the 25-year gross. Solid: 1 × $12,000.00 = $12,000.00. Engineered: 2 × $9,000.00 = $18,000.00. Solid wins by $6,000.00.

Line 4 — the 25-year net. Solid: $12,000.00 − $4,000.00 = $8,000.00. Engineered: $18,000.00 − $2,000.00 = $16,000.00. Solid wins by $8,000.00.

Line 5 — the net cost per year. Solid: $8,000.00 ÷ 25 = $320.00/yr. Engineered: $16,000.00 ÷ 25 = $640.00/yr.

Line 6 — the break-even engineered price. Engineered ties solid on net cost when its installed price is ($8,000.00 + $2,000.00) ÷ (2 × 1,000) = $5.00/sq ft. Buy engineered below that and engineered wins net; above it, solid wins net. At $5.00 a foot the engineered net is $8,000.00 — an exact tie. The gross ties at $6.00 a foot (2 × 1,000 × $6.00 = $12,000.00), but engineered still loses net by $2,000.00 at that price, because of the resale gap.

Every branch, checked

800 sq ft: the solid upfront is 800 × $12.00 = $9,600.00 and the engineered upfront is 800 × $9.00 = $7,200.00 (engineered by $2,400.00); the gross is $9,600.00 against $14,400.00 (solid by $4,800.00); and the net is $5,600.00 against $12,400.00 (solid by $6,800.00), or $224.00 a year against $496.00. A smaller floor shrinks every number by a fifth, but the winner is the same at every size.

Solid at $9.00/sq ft: the solid upfront falls to 1,000 × $9.00 = $9,000.00, the same as engineered, so the upfront is a tie; the gross is $9,000.00 against $18,000.00 (solid by $9,000.00); and the net is $9,000.00 − $4,000.00 = $5,000.00 against $16,000.00 (solid by $11,000.00), or $200.00 a year against $640.00. Cheap solid ties upfront and still wins net by more: one cheap solid floor still costs less than two engineered floors.

Engineered at $6.00/sq ft: the engineered upfront falls to 1,000 × $6.00 = $6,000.00, so the gross is $12,000.00 against $12,000.00 — a tie — and the net is $12,000.00 − $2,000.00 = $10,000.00 against $8,000.00 for solid — solid wins net by $2,000.00, or $320.00 a year against $400.00. Cheap engineered ties gross but still loses net: two cheap floors still cost more than one dear one, once the resale gap is counted.

Resale $0: with no resale value, the solid net is the gross cost: $12,000.00 against $18,000.00 for engineered, so solid wins net by $6,000.00, or $480.00 a year against $720.00. Solid does not need the resale value to win: one solid floor is cheaper than two engineered floors on its own.

1,200 sq ft: the solid upfront is 1,200 × $12.00 = $14,400.00 and the engineered upfront is 1,200 × $9.00 = $10,800.00 (engineered by $3,600.00); the gross is $14,400.00 against $21,600.00 (solid by $7,200.00); and the net is $10,400.00 against $19,600.00 (solid by $9,200.00), or $416.00 a year against $784.00. A bigger floor widens the gap in dollars, but the winner is the same at every size.

Reverse — the break-even engineered price: engineered ties solid on net cost when its installed price is ($8,000.00 + $2,000.00) ÷ (2 × 1,000) = $5.00/sq ft. At $9.00 a foot engineered is well above that, so solid wins net by $8,000.00; at $4.00 a foot it is below, so engineered wins net. The $5.00 line is where the two floors are exactly equal over 25 years.

What the defaults assume

The model counts install, replacement, and resale only: it does not count the cost of removing the old floor, the underlay, the skirting, the finishing or the sealing. It assumes solid lasts 25 years or more and is never replaced — in reality a solid floor in a wet room can cup, and a floor over underfloor heating needs care. It assumes engineered lasts 20 years and is replaced once at the same price — in reality a thick wear layer can last longer, and a thin one can be scratched through in a few years. It assumes the resale values hold: solid adds about $4,000 to a house and engineered about $2,000, but the real numbers depend on the buyer and the market. It assumes prices stay flat for 25 years, which they will not. Rounding convention: money is rounded to cents and all figures are computed from unrounded values, rounded only for display.

Output · formula · meaning

Who uses this

• The homeowner reflooring the living room: they learn solid costs $8,000.00 net over 25 years against $16,000.00 for engineered — and solid can be refinished many times, so the floor that looks better is also the cheaper one.
• The landlord flooring a rental: they will never see the resale value, but with resale at $0 solid still wins net by $6,000.00 — so they install solid, knowing the engineered floor would need replacing before the tenant moves out.
• The homeowner who found cheap engineered: at $6.00 a square foot installed, engineered ties solid on gross — but solid still wins net by $2,000.00, so they check the net before they buy the cheap planks.
• The renovator flooring the whole house: at 1,200 sq ft solid wins net by $9,200.00 — so they price the whole house, not the first room, before they decide.

Accuracy & limitations

The math is exact for the numbers you enter: the upfront is the area times the installed price, the gross adds the replacement, and the net subtracts the resale value. What the model cannot do is know your floor: solid in a wet room can cup, and engineered with a thin wear layer can be scratched through in a few years. It leaves out removal of the old floor, underlay, skirting, finishing, and sealing — ask the installer whether the quote includes those. It assumes the resale values hold, but the real numbers depend on the buyer and the market, and a buyer who plans to re-floor will pay nothing for it. It assumes prices stay flat for 25 years, which they will not: solid and engineered prices move with timber. For the floor against laminate, see hardwood vs laminate flooring; for carpet against hardwood, see carpet vs hardwood flooring.