Flexible Moulding Installation Tips

Measuring Required Length

Half, Full or Quarter circle the formula is :

  • Half Circle = RADIUS X 3.14
  • Full Circle = RADIUS X 3.14 X 2
  • Quarter Circle = RADIUS X 3.14 X .5

Arc Segments, Eyebrows and Ellipticals the formula is:

  • Arch RISE X 2 + Arch WIDTH
  • how to measure for flexible moulding

Ovals the formula is:

  • Oval WIDTH X 2 + Oval HEIGHT x 2

CautionRound up to the nearest whole foot. There is a 4 foot minimum per length.

CautionBe sure to include enough material for miters and any reveal.

Calculating the RADIUS

Calculating the RADIUS for flexible Half, Full and Quarter Circle arches:

Calculating the RADIUS for flexible Crown Moulding:

 

Radius

Radius = Distance from the center to the outside of a circle (1/2 the Diameter )


diameter

Diameter = Distance accross a circle
( radius X 2)


Circumference

Circumference = Distance around a circle (Diameter X 3.14)

 

Cutting and Shaping flexible mouldings

  • Flex Trim and ZzzzFLEX moldings can be cut, sanded and shaped using typical woodworking tools.
  • Hold material firmly to table or fence when cutting.
  • Cut material long and then shave to exact length.
  • When shaping, use several "shallow" passes rather than one "deep" cut.
  • Do not sand or shape the wood grain on stain grade material.

 


Cutting flexible moulding

 

Fastening flexible mouldings

  • Pre-determine material placement and layout.
  • Keep nails and screws to a minimum.
  • Keep nails and screws away from edges to prevent bumps at edges.
  • Use construction adhesive such as P/L Urethane along the entire length.
  • Use a thin adhesive such as Gorilla Glue for bonding joints.

 

Nailing flexible moulding
 

Painting flexible mouldings

  • Flexible moulding is not UV stable and will grey or darken over time if not painted (or stained).
  • Clean material before painting using soap and water or mineral spirits
  • A primer coat is recommended but not required.
  • Never paint before installation.  The material is flexible and the paint may crack during installation.
  • All paints work well.

 

Painting flexible moulding
 

Staining flexible mouldings

  • Flexible moulding is not UV stable and will grey or darken over time if not stained (or painted).
  • Wood grain material appearance can be affected if the surface is scratched, sanded or altered.
  • Never stain before installation.  Flexing of the material during installation may damage the stain.
  • Clean material thoroughly before staining usin soap and water or mineral spirits.
  • Mask off surrounding areas.
  • Heavy stains such as "gelled stains", work best.
  • Clear coat after staining.

 

  1. Always install before staining.
  2. Be sure the material is clean and free of dirt and oils. Clean with paint thinner or soap and water if needed.
  3. Mask off any adjacent non-stain areas.
  4. Apply the stain with a brush covering the entire surface of the material, especially in any deep grooves or crevices that may exist.
  5. Using a clean, dry brush, begin removing the excess stain.
  6. Clean the brush of excess stain by wiping on a rag.
  7. Continue removing excess stain with the brush until the desired color is acheived.
  8. Clear coat with lacquer, polyurethane or varnish using spray equipment. Applying clear coats with a brush may remove stain.

 

 

Staining flexible moulding