The Prolam PL17 Non-Visual Grade Beams are structurally engineered timber elements with high strength and dimensional stability intended intended for use in applications where appearance is unimportant. All appearance blemishes are permitted in this grade. The surfaces are machined, but machine skip is permissible and blemishes, voids and manufacturing will remain unrepaired. Loose, knots, wane, pith and open knot holes may be present.  Prolam PL17 Non-Visual Beams are treated to H3.2 and H1.2

Timber used for laminating is carefully selected for production and graded according to strict Prowood specifications. All timber stock is kiln dried, to 13% average moisture content, to ensure efficient bonding in the gluing operations.

The laminations are machine finger jointed if required, with glue being cured by state of the art European press systems and controlled temperature. Prolam PL17 glulam products are available in visual and non-visual utility grades and are pre-cambered to Prolam's specific precamber. Un-cambered Prolam PL17 beams are available to order.

Prolam PL17 beams are manufactured to the wide range of sizes specified by the Prolam Pro online specifier.  Specify with certainty with our online calculator!