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MiraTEC Trim

Made from the patented TEC™ process, MiraTEC® Treated Exterior Composite trim combines the eye-catching beauty of cedar with the long-lasting performance of an engineered product. Because it is not hardboard, MiraTEC trim will not delaminate, is moisture, rot and termite resistant, and is backed by a 50-year limited warranty.

MiraTEC Treated Exterior Composite Trim is the first and only wood composite trim to earn an evaluation report from ICC Evaluation Service (ICC-ES). To view ESR-3043, visit the ICC website at:

Competitive and long term performance testing shows MiraTEC resists moisture, rot and termites and outperforms the competition. Moisture resistant: As measured by ASTM D1037 for water absorption and thickness swelling. Rot resistant: Tested per AWPA E16 Field Test for Evaluation of Wood Preservatives to be Used Out of Group Contact: Horizontal Lap-Joint Method. Termite resistant: As measured by AWPA E7 Standard Method of Evaluating Wood Preservatives by Field Tests with Stakes.


Since 1999, MiraTEC has been proudly made in Towanda, Pennsylvania. MiraTEC trim is produced on one manufacturing line using the patented and proprietary TEC manufacturing process. Covered by U.S. Patents 5,677,369; 5,980,798; 5,993,709 and 6,030,562.  This sealed press, steam-injected process was created specifically to make trim.

Sustainable wood fiber, wax, phenolic resins – for moisture resistance, zinc borate – an EPA-registered biocide, and other proprietary ingredients are combined in to create a trim board that’s one solid piece.  MiraTEC trim is uniformly thick and dense, with no voids or knots. Any way you use it, MiraTEC trim provides maximum yield, eliminates waste, and offers a plentiful product supply and stable pricing.

MiraTEC most closely replicates the authentic grain of wood, thanks to substantial research and investment in the product line.  See the difference here. By combining beauty with the best in technology and performance, MiraTEC trim helps you achieve a distinctive look for the long term.

MiraTEC trim provides the perfect accent to any exterior cladding – cement fiber, vinyl, brick, OSB, hardboard, wood or stucco. You have the option of a smooth side and a textured side for maximum versatility. It’s factory primed with a mildew-resistant primer on four sides for easy painting. MiraTEC trim presents wonderful possibilities for dentil trim, gables, corner posts, porch trim, fascias, windows, doors, column wraps, decorative trim and other non-structural architectural elements.  View the gallery below.

  • Resists moisture, rot and termites.
  • Reversible: clear cedar wood grain texture on one side, smooth on the other.
  • Easy to handle, machine, cut and nail.
  • Won’t check, split or crack.
  • Cuts consistently due to uniform product density.
  • Factory-primed on four sides with a low VOC primer containing a mildewcide.
  • Available in 5/8″, 4/4 and 5/4 thicknesses, 16′ lengths and in widths of 3″, 4″, 5″, 6″, 8″, 10″, 12″, 16″ and 2″ MiraTEC batten.
  • Class C Fire Rating: Flame Spread 120; Smoke developed 90.
  • Backed by an industry-best 50-year limited warranty.
  • Green: made from sustainable materials, certified to contain no added urea formaldehyde and primed with a low VOC primer containing a mildewcide.
  • First and only wood composite trim to earn an evaluation report (ESR-3043) from ICC-ES; it performs to a standard hardboard and OSB can’t.


MiraTEC Hardboard

  • MiraTEC trim is one solid piece. Hardboard trim has clearly visible lamination lines.
  • MiraTEC trim is made from a process created specifically for exterior trim. It is not two pieces of siding glued together like most hardboard trim.
  • MiraTEC trim has greater moisture resistance, and therefore better long term performance.
  • MiraTEC trim has a more comprehensive warranty and protects against hail damage, rot, termite and warp.
  • MiraTEC trim has a more authentic wood grain texture.

Moisture Resistance


  • MiraTEC trim has a more authentic wood grain texture.
  • MiraTEC trim is reversible.
  • MiraTEC trim is highly resistant to moisture. Independent tests show fiber cement absorbs over five times more water (ASTM 24-hour soak tests).
 Water Absorption

  • MiraTEC trim is 100% silica free. Cutting fiber cement releases silica, which is a known carcinogen.
  • MiraTEC trim is not brittle or difficult to stack.
  • MiraTEC trim handles like wood; so it’s easier to cut and nail, and does not require special tools.
  • MiraTEC trim is available in widths up to 16″ and lengths of 16′, which takes less time and labor to install.
  • MiraTEC trim is backed by a 50-year limited warranty. Most fiber cement trim is backed by a 15-year limited warranty.
  • MiraTEC trim costs up to 30% less.*
    * Varies by market.



  • MiraTEC trim has a more authentic wood grain texture.
  • MiraTEC trim accepts all shades of paint beautifully.
  • MiraTEC trim is not prone to thermal expansion.
  • MiraTEC trim is made from sustainable material and renewable resources.
  • MiraTEC trim costs 50% less. PVC trim is a super premium priced product.



  • MiraTEC trim offers stable availability, supply and pricing.
  • MiraTEC trim is an engineered product and resists warp. Wood warps, twists, splits, and breaks.
  • MiraTEC trim offers 100% yields.
  • MiraTEC trim offers protection against rot and termites.
  • MiraTEC trim has a 50-year limited warranty; wood has no warranty.
  • MiraTEC trim is factory primed with a low VOC primer with a mildewcide; wood is not primed.
 MiraTEC Competitive Chart