High-pressure laminate (HPL) is the default surface for commercial casework, store fixtures, reception desks and work surfaces. It comes in several grades that differ in thickness and purpose, and a vertical grade used on a countertop, or a standard grade bent around a tight radius, will chip or crack early. Below: how the grades differ and where each belongs.
HPL is made from layers of resin-impregnated kraft paper with a printed or solid-colour decorative sheet and a clear wear layer on top, pressed together under heat and high pressure into a thin, hard sheet. It is then glued to a core such as particleboard or MDF. The North American performance standard is NEMA LD 3, which sets grades and test methods for wear, impact, heat, stain and other properties.
HPL is different from low-pressure laminate (LPL, often called melamine or thermally fused laminate), where a resin-saturated decorative paper is fused directly onto the board. LPL is economical and widely used for cabinet interiors and lower-wear surfaces. The 2nd edition of the Architectural Woodwork Standards allows it on the exposed outside surfaces of casework at Economy grade and calls for HPL there at Custom and Premium grades; later editions and project specifications can differ, so check the edition your project cites.
Grade names and exact thicknesses vary a little between manufacturers, so specifications usually name the NEMA LD 3 grade and a nominal thickness, plus the manufacturer, colour and finish.
Compact laminate is HPL made thick enough to stand on its own, with a phenolic kraft core and decorative faces on both sides. Manufacturers make it from a few millimetres up to 25 mm (1 in) thick or more. Because it has no wood core, it tolerates water far better than laminate on particleboard or MDF, which is why it is used for washroom partitions and vanities, lab tops, lockers, wall cladding in wet areas and some countertops. Edges are machined and sanded rather than banded, so the solid core forms the whole visible edge; it is usually black or dark brown unless a colour-core product is chosen. Standard and fire-rated versions are available. Thicker panels can bow slightly, so manufacturers publish support spacing and fastening rules that should be followed.
Laminate is only as good as what it is glued to. Particleboard and MDF give the flattest base; moisture-resistant cores belong under sinks and in wet areas. See particleboard, MDF and plywood cores. Edges are where laminate work most often fails, so pair the grade with the right edge treatment; our edgebanding guide covers the options. For a comparison of laminate with wood veneer, see laminate vs veneer.
We build laminate casework, counters and store fixtures in our Vaughan plant, from cutting and edgebanding through assembly. The shop drawings our drafting team issues for review are the place to confirm laminate grades, seams and grain direction before production, and laminate samples are normally submitted alongside them for review and approval. Send us your drawings and finish schedule to start.
Horizontal general purpose grade (HGS), about 1.2 mm (0.048 in) thick, or a horizontal postforming grade where the edge is rolled. Vertical grade is thinner and more likely to chip and crack on a working surface.
Horizontal grade is thicker, about 1.2 mm, and made for surfaces that take wear and impact, such as countertops and desks. Vertical grade is about 0.7 mm and is used on doors, cabinet sides and wall panels that see less impact.
No. Melamine, or low-pressure laminate, is a resin-saturated paper fused directly to the board. It is economical and common for cabinet interiors. High-pressure laminate is a separate, harder sheet glued to the core and is the usual choice for exposed surfaces that take wear; check which the project’s woodwork grade and specification allow.
Where surfaces get wet or need to stand without a wood core: washroom partitions and vanities, lab tops, lockers and wall cladding in wet areas. Its phenolic core tolerates moisture far better than laminate on particleboard or MDF.
Not directly. Laminate manufacturers limit exposure to high temperatures, and hot pans or appliances can blister or discolour it. Use trivets, heat-resistant inserts or a different surface where hot equipment sits.
