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Topic 9 finishes

this file for topic 9 in construction technology 2 for student diploma in quantity surveyors semester 2...

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Topic 9 finishes

  1. 1. FINISHING WORKS •Floor Finishes •Wall Finishes •Ceiling Finishes
  2. 2. Floor FinishesFactor efecting the choosen of floor finishes• Type of base• Room usage• Degree of comfort required (Sound Control,freedom from slippenness, Warmth)• Maintenance (clearing, repairing)• Cost• Appearance• Safety• Individual preferance
  3. 3. Floor Finishes Floor finishes can be considered under three main heading• Insitu Floor Finishes• Applied Floor Finishes• Timber Floor Finishes
  4. 4. Floor Finishes Insitu Floor Finishes• Finishes which mix on site•Laid in fluid, allowed to dry and set to hardsurface•Several type of in-situ floor finishes - Mastic Asphalt - Pitch Mastic - Granolithic - Cement rendering
  5. 5. Floor Finishes Applied Floor Finishes• Finishes which are supplied in tiles or sheet form• Laid on to suitable prepared base• normally in the form of flexible materials andsmooth finish• Laying in a cement/sand bed/screed to theconcrete floor•Normal screed mix is 1:3 (cement:sand)•Normal screed thickness is 12mm to 19mm
  6. 6. Floor Finishes Applied Floor Finishes (cont’d)• very high resistance to chemicals• Harder and more resistance to erosion• standard size 150mmx150mm, 200mmx200mm,300mmx300mm•Thickness 8.5mm to 13mm•Method of laying – Lay a layer of cement/sand screed (1:3) –Lay the tiles on the screed from the center of the room –Allow at least 2mm joint
  7. 7. Floor Finishes Applied Floor Finishes (cont’d)• several types of applied floor finishes – Ceramic tiles – Mosaic – Marble – Quarry tiles – Carpet – PVC tiles (no need cement screed)
  8. 8. Floor Finishes Applied Floor Finishes (cont’d)floor tiles installation skirting
  9. 9. Floor Finishes Timber Floor Finishes• Finishes which are supplied in timber form•Laid on to suitable prepared base•Several type of Timber Floor Finishes Timber strip Parquet
  10. 10. Wall FinishesFactor efecting the choosen of wall finishes• Room usage• Degree of comfort required (Sound Control,thermal insulation)• Maintenance (clearing, repairing)• Cost• Suitability of decoration• Fire protection
  11. 11. Wall Finishes Type of Wall Finishes• Plastering• Painting• Tiling
  12. 12. Wall Finishes Plastering• give jointless, hygienic, easyly decorated andusually smmoth surface on background• Material of plastering consist of – binding materials – workability agents – aggregate – water –Ancillary materials
  13. 13. Wall Finishes Plastering• Type of background for plastering work – Claybrick – blockwork – concrete – boards
  14. 14. Wall Finishes Plastering• Mixture of plaster should be in a clean plasticand using clean water only.• common mix used for plastering works is 1:1:6(cement : lime: sand) or 1:3 (cement : sand)• Normal thickness of plastering 12mm-16mm
  15. 15. Wall Finishes Painting• The application to surfaces of pigmented liquidsor semi liquids which subsequantly harden• Paint – is the mixture of a liquid or medium and colouring or pigment –Comprised of primer, undercoats and finishing coats
  16. 16. Wall Finishes Painting• Application of paint – surface to be painted shall be dry, free from dirt, oil, grease, old loose paint etc – All cracks shall be raked out and stopped – All holes and dirt shall be fillet – Painting work should be done by the skilled worker – Make sure the rooms are in good ventilation and dry – Application may be by brush, roller or sprays
  17. 17. Wall Finishes Painting• Application of paint to timber surface – All knots shall be cover with knotting – All nail holes, cracks shal be stopped with putty – Surface shall be primed with aluminium wood primer – The prepared surface shall be painted with one undercoat – Then finish with two coats of gloss enamel paint – Each coat shall be allowed to dry and rubbed lightly with sand paper and clean before applying the next coats
  18. 18. Wall Finishes Painting• Application of paint to steel or iron surface – Surface should be clean and free from rush, oil,grease, dirt and dust – Apply one undercoat and two coats of gloss enamel paint
  19. 19. Wall Finishes Painting• Application of paint to new plastered surface – new plastered surface shall be allowed to dry completely – shall be clean and remove dust, dirt, plaster splash – The clean surface shall be applied with the one coat of alkali resisting primer sealer –Then followed with two coats of emulsion paint
  20. 20. Wall Finishes Painting• Repainting to existing plastered surface – If the existing paintwork is still infact, the surface shall be washeddown and applied with two coats of emulsion paint – If the esisting paintwork is loose or chalky, the paint shall be remove by scraping and the surface shall be wash – The clean surface shall be applied with one coat approved alkali resisting primer sealer and two coat of emultion paint.
  21. 21. Wall Finishes Tiling• Basicly the wall tilling works is same to the floortiling works
  22. 22. Ceiling Finishes• The overhead interior surfaces or living of a room• Often concealing underside of the floor or roofabove• It can construct either below pitch roof or flat roofand either horizontally or follow the pitch of the roof• there are 3 system of ceiling finishes can beconstruct – Exposed ceiling – Fixed ceiling – Suspended ceiling
  23. 23. Ceiling Finishes• The factor to be considered in the selection ofceiling system – Type of floor structure – Appearance – Durability –Safety to occupants – The location of mechanical services/equipment –Fire resistance – Economy – Life span –Function of the building –Need for acustic elements
  24. 24. Ceiling Finishes Exposed Ceiling• A simple ceiling finishes construction• no ceiling sheet required• Apply plastering and painting to the exposedsurface of a floor structure or a flat roof
  25. 25. Ceiling Finishes Fixed Ceiling• Can be construct either horizontallyor follow thepitch of the roof• Fixed to ceiling joist and ceiling spacer (nogging)• The joint between the ceiling panels are coveredand finished with timber beading or aluminiumstrips.• The construction of ceiling structure is similar tofloor structure
  26. 26. Ceiling Finishes Fixed Ceiling• Normal size of joist 100mm x 50mm at 1200mmor 600mm center to center (spacing)• Normal size of spacer 50mm x 50mm at 600mmcenter to center (spacing)
  27. 27. Ceiling Finishes Suspended Ceiling• Ceiling are fixed to a framework suspended fromthe main structure thus forming void between the2 component.•System comprised of galvanised steel/aluminiumstructure or frame are suspended with wire hangerto the floor or roof structure above it• cross section of frame I or H or T section• The main joist is fixed to adjustable hangerwhich nailed or screwed to the suspendedconcrete floor (max distance :600mm)
  28. 28. Ceiling Finishes Suspended Ceiling• Cross joist are fixed across the main joist• The spacing o ceiling frame/structure aredepends on the size of the ceiling panel• The ceiling panel are screwed to the ceilingframe
  29. 29. Ceiling Finishes Suspended Ceiling
  30. 30. Ceiling Finishes Suspended Ceiling• Basic functional requirement of suspendedceiling are – Easy to construct, repair, maintain and clean – Access to hidden se services ducts in ceiling void – minimize weight –Provide sound and thermal insulation – Asthetic colour, texture shape etc