PVC trim flexes more than wood, so it's a good idea to have plenty of support . GRK's RT composite trim head screws have a special reverse thread near . Thermal Expansion and Running Joints .. Ground Rules for Grade-Level Decks.
And unlike wood (which mostly shrinks crosswise), PVC trim grows and . it will shrink when the weather gets cold, and expand when the weather gets hot.
Similarly, PVC trim is expected by 2014 to surpass metal as the No. . has improved in the past decade, it still struggles to beat problems caused by thermal expansion, . Well, since 2004, seven wood-plastic composite manufacturers and suppliers have faced . Most of the wood consists of cast-offs from flooring factories.
PVC azek trim looks and cuts like wood and it lasts forever, but there are a few . such as corner trim boards and door trim that's near the ground or unprotected by an overhang. .. Dark colors tend to absorb more heat and increase expansion.
Jul 27, 2014 . Use these tips for installing PVC trim the right way. . PVC is a form of plastic that's used in a hundred different ways, including for plumbing pipes. . You can cut PVC products with the same power tools that you use for wood. .. more of the sun's heat and increased expansion of the PVC, causing the trim to.
Oct 21, 2011 . For wood, wood composites, and fiber cement, movement is all about . The coefficient of thermal expansion describes how the size of an . For cellular PVC trim, as well as most exterior building products, the . For instance, gluing the cellular PVC fascia board to the sub-fascia with Liquid Nails sub-floor or.
Wood composite, plastic, and fiber-cement trim products promise to hold . When installing a 40-foot fascia of engineered wood, the installer must allow for expansion, . wood chips are heated with steam and hot water, then mechanically ground. . Like hardboard, it is bonded together by resins under heat and pressure.
CLTE Coefficient of Linear Thermal Expansion for Common Building Materials . what is the linear expansion of glass, metal, wood, masonry or plastic in response to . Nylon, 0.0000447 (molding & extruding compound), Clay tile, 0.0000033.
Allow for Thermal Expansion of Plastic or Cellular Vinyl . restrict movement in PVC trim by gluing it to a wood.
Aug 31, 2012 . What is the best glue for bonding PVC trim to wood? . For bonding to wood, we recommend Liquid Nails Sub-Floor Adhesive or Heavy .. To minimize thermal expansion, should I cement them together or will that exacerbate the problem? .. I have Versatex cellular PVC trim on the exterior of my cottage.