Fixing, Finishing and Storage - Nelson Pine

1 12 Fixing, Finishing and StorageStaplingStaples can be used effectively for joint fitting. For bestresults it is helpful to add adhesive to the joint prior stapling into GoldenEdge MDF, it is important to havegood control of air pressure to avoid excessive penetrationof staples. For nailing use either annular groove or helicalnails of 13 or 14 gauge, for best Staple9mm20mm12mm20-25mm15mm30mm16mm32mm 18mm36mmDo not staple within 25mmof edge of board. Offsetstaple to edge of PositionThe position of screws inserted into the faces and edges ofMDF should be decided in relation to board thickness andscrew size. Screws inserted into the edges should be notless than 25mm from the TensionThe screw must not be overtightened as further turning willreduce the holding Withdrawal StrengthsTo illustrate the holding power of screws in GoldenEdgeMDF the forces required to withdraw typical parallel threadscrews in an axial direction from 16mm GoldenEdge MDFfaces and edges are given GaugeDepth of InsertionWithdrawal Strength(mm)(N)Face Edge Face Edge512125803601620108064061212640390162 0114096081212750470162013301060 MachiningGoldenEdge MDF Panels can be worked easily with standardwood working machinery.

2 The homogenous nature ofGoldenEdge ensures that a good finish can be achieved onthe carbide cutters and saws are of its light colour GoldenEdge MDF is an idealsubstrate for laminating with natural wood veneer, vinyls,printed papers, foils and melamine balanced laminated panel would eliminate minor cuppingor must be taken to ensure that conditions of very highpress pressure, high press temperature and long press timesdo not exist during HoldingGoldenEdge MDF provides good screw holding strengthboth in the faces and recommendations are:Screw TypeThe best results are obtained with the parallel thread screwssuch as the Twinfast or particle board wood screws are not GaugeThe choice of screw gauge should be decided in relation toboard thickness. The maximum screw gauge when edgefixing into GoldenEdge MDF is:Pilot HoleA pilot hole is recommended to avoid splitting during edgescrew Hole DepthPilot holes should be drilled approximately 2-3 mm beyondthe expected depth of insertions of the Thickness Maximum Screw Gauge95126157167188259 Screw GaugeRecommended Pilot Hole ScheduleFixing Centres (mm)150 Edge200 IntermediateSheet Edge Clearance (mm)2(Note all nails either non-ferrous or plated)NailingGoldenEdge MDF can be fixed by naili ng with good holdingpower and no split out when the following conditions aremet:1.

3 Types of NailsUse either annular grooved orhelical (spiral) Nail SizesUse only 13 or 14 gauge give best results withgood holding power in 16mmand 18mm GoldenEdge length of nail should notexceed is not recommended for 9mm and 12mmGoldenEdge Distance from the CornerNails must be at least 25mm from the corner of theMDF Nailing at a slight angle will further increase theholding Nailing is not recommended to the edges of 9mm and12mm MDF (screwing is recommended).6. Air gun pressure should be adjusted to ensure that thenail head finishes level with the surface of the and FinishingSpecial attention to sanding edges gives excellent 120 grit paper followed by 240 or 320 grit all nail and staple holes with a low shrinkage woodfiller. Match and blend colours as required to suit. Lightlysand with 320 grit best results application of three coats is coat Primer/undercoat is critical to the final finish. Itis recommended that primer/undercoat is applied to paintmanufacturer's second and third coats or additional coats as light sand using 280 to 320 grit paper is recommendedafter the first coat and between subsequent with GoldenEdgeTo achieve a smooth continuous surface without warpingor distortion, GoldenEdge should never be fixed totimber framing or substrates with a moisture contentexceeding 20%.

4 FinishingVeneers and Plastic Sheeting Surfacing:Satisfactory adhesion by cold cured adhesives rely on keyingof the surface of GoldenEdge by light sanding. It is essentialthat a balancing of surfacing be provided on both surfacesto avoid board of GoldenEdge on one surface alters the balanceof the material to absorb moisture, therefore the risk ofboard distortion is high. This practice is not into EdgePhoto courtesy Kitchen StudioFURNITURE &FITTINGSNo. 320803814 Fixing, Finishing and StorageUnsatisfactory supportIdeal supportLining Masonry Walls (6mm minimum recommended)Because of the GoldenEdge susceptibility to water vapour,masonry walls must be sealed from external moistureingress. The following procedures must be adhered 1 Application of an effective damp proof course ( ) to the exterior of backfilled basement 2 A moisture barrier must be applied (ie. paint film) tothe interior of basement walls. Furring strips are thenoverlaid, (50 x 25mm) the spacing of which is given inFramework Support Centres table.

5 25mm end gaps shouldbe left around the furring strips to encourage air 3 A reflective insulation foil should then be applied tothe face immediately before the application of theGoldenEdge board, then fixed in the manner described fortimber frame lining. Consideration should be give to theinsertion of small ventilation holes at the bottom of eachsheet, finished with facing non-compliance with any or all of the previous stepswill encourage sheet movement and therefore cause thelining to developments in construction adhesives have madethem extremely effective and useful in fixing sheet materialsas an alternative to mechanical fixing by nails or adhesives and GoldenEdge are compatible,being ideal for lining interiors. It is recommended thatsolvent based elastomeric construction adhesives be usedpreferably of the slow cure variety. Water based varietiesare not recommended. Manufacturers recommendationswith reference to method and degree of application mustbe followed method of manufacturing MDF ensures a balancedconstruction resulting from the uniform distribution of fibresthroughout the thickness of the board.

6 The maintenance ofthis inherent flatness is dependent upon the use of correctstorage and handling procedures. Without these, boardsmay develop a permanent set under their own weightparticularly if they are not adequately supported on a flatpallet or by sufficient bearers during any Storage DeliveryGoldenEdge is delivered with cover sheets included at topand bottom. These packs are plastic strapped and shouldbe dismantled and conditioned on bearers as soon aspossible. Care should be taken when cutting ensure the compatibility of GoldenEdge with othermaterials with which it is being used, a conditioning periodof at least 48 hours must be observed. To promote airmovement around the individual sheets, 75mm gluts mustbe inserted between the sheets. It is essential that eachsheet is supported not more than 900mm centres and 300mmfrom the end. If the stack must be covered a breather typesheeting with a clear air space must be provided betweenthe stack and the cover sheet; impervious materials such aspolyethylene sheet must be CareCare in stock turn is essential to avoid board variationscaused by moisture uptake.

7 Therefore the principle of firstin first out stock rotation should be used. Storage shouldalways be in areas not subject to:1. High humidity 2. Water infiltration3. Abnormal temperature variation 4. Direct sunlight5. Spillage of liquids such as coffee or teaLining Walls (6mm minimum recommended)Because of the susceptibility of GoldenEdge MDF toexpansion and contraction all joints between sheets shouldprovide for movement. Therefore a 2mm expansion gapmust be provided of the joint can vary - vee joint, rounded joint,timber half round, PVC MDF must be supported by framework andnailed at specific points please refer to LINING CEILING LININGP anelStudNoggingJoist/TrussNoggingThickne ssCentresCentresCentresCentres(mm)(mm)(m m)(mm)(mm) , , Support CentresThe following procedures are recommended:1. MDF sheets should preferably be stored horizontally andlifted clear of the floor using dry bearers as Where individual bearers are used they should be of equalthickness and placed at not more than 800mm centres forboards of 15mm thickness or more.

8 Closer spacing isrequired for thinner The bearers supporting successive layers should be invertical Stacks of boards should have flush sides to minimisedamage to protruding edges or overhanging Vertical Storage of small numbers of boards is acceptableprovided the boards are well supported close to The Storage area should be well ventilated and theconditions should be reasonably dry. An average relativehumidity of 50% will maintain board moisture content inthe range 7-9%.7. Boards should be fully protected from the weather duringtransportation and One or two scrap boards should be placed on top ofstacked boards, to reduce the effect of short term changesin environmental conditions.