Solid Core Interior Door
Engineered Door Quality Standards
Specifications For Door Slabs
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Laminated and Veneered
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Panels, Membrane Pressed
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Joints, Dowel joint
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Veneering Method
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Either Pre-Assembled or Post-Assembled
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Minimum 12 cuttermarks per inch
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Furriness on Ovolo not allowed
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No chipped out of grain
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Burnt marks on Ovolo not allowed
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Sand raised grain well
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Glue bleed through not allowed
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Remove glue contamination on door surface
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240 grit sandpaper will be used to finish the door
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Slightly ease sharp corner edges
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Minimize cross sanding marks with orbital sanders
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Tight scribed joints
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Occasional Hairline gap is allowed at the shoulder joints
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Repairs Allowed only if not noticeable to the naked eye
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Moisture content between 8-12%
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No serious mineral streak
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No strong discoloration
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No loose knots
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Minute knots allowed if not numerous
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No pin holes on Ovolo profile
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Good color matching
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No surface checking on ovolo profile
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No case hardening
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Minor discoloration allowed
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Pin holes allowed if well filed
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Limited sapwood allowed
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Tight large knots allowed
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Minute knots allowed if not numerous
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Large flaky rays allowed
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No finger joint except for softwood species such as pine
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Finished width of edge strip is to be minimum 10mm
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Edge strip of up to 18mm can be considered at a slight premium
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Butt joint is allowed if concealed
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(Ovolo) Good coloring/tonality match
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No serious discoloration
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No pin holes
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Standard 12mm width after trim
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End caps of up to 42mm can be considered at a slight premium
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Other wood species with reasonable color match is allowed
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Moisture content between 8-12%
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Not rotten
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Defects that are opened in nature not allowed
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Moisture content between 12-15%
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Quarter cut or rift cut for components
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Flat cut for panels
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Occasional use of quarter or flat cut for the entire door is allowed
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Good color match
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Minimal Mineral Streak
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No sap
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No large knots
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Minute knots allowed if not numerous
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Excessive large and flaky rays not allowed
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Bottom rails and panels of all doors allowed to be book match spliced
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Preferably finger jointed and laminated along edge
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Well dried to 8-12% moisture content out from kiln dry
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When rubber wood is used it must be suitably pressure treated with Borax
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Use of LVL/LVB as core is allowed
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Use of blockboard as core is allowed
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Occasionally need to laminate on face to build up thickness is allowed
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Density range of 500 - 700 kg/m3 is preferred
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Defects that do not impair its strength/gluing properties are allowed
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Density between 600 – 700 kg/m3 +/- 20%
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Moisture content between 8-12%
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Both plantation or forest wood based are allowed
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Strength properties must exceed those stated in EN 1993
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Moisture resistance used for interior doors
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Use as core materials for stiles and components when specified
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Must have strength properties exceeding those in EN 309-5
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Use as core material for membrane pressed panels
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15mm for double sided fielded panel and 10mm for single sided
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Density between 500-600 kg/m3
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Moisture resistance grade used for interior doors
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Moisture content between 8-12%
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Glue used for interior doors must passed EN 204-205 Class 2 standard
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Color dye may be used if it does not affect the gluing properties
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Lamination can either be cold, hot or RF (Radio Frequency)