Repainting wood work

Repainting Doors

Learn : Repainting wood work,Repainting Wood Furniture,Repainting Doors,Repainting Cabinetry,wood floors Repainting wood work (i)        If the old paint be unsightly, unsound, blistering or flaking off then it should be removed by the application of some paint remover, by scrapping or by burning the paint with a blow lamp. (ii)       On surface disfigured by smoke a coat …

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Painting plastered surfaces

New plastered surfaces

Learn : Painting plastered surfaces,New plastered surfaces Painting plastered surfaces (i)        A plastered surface should be painted only after it has thoroughly dried, otherwise the paint would get spoil. (ii)       To avoid sucking of paint by plaster soak the surface with a pore filling solution which will dry off leaving an impervious surface. A wash …

Painting new wood work

Painting new wood work

Learn : Painting new wood work : Knotting or killing the knot, Application of priming coat, Stopping, Application of finishing coats. Painting new wood work   Following points should be attended to before painting new wood work:   (i)        Only well seasoned timber should be painted otherwise not only shall the paint be spoilt but …

Removal of old paint and painting

Removal of old paint and painting

Learn : Removal of old paint and painting : Remove the paint, old paint and painting Removal of old paint and painting REMOVAL OF OLD PAINT One of the following two methods could be employed to remove old paint from a surface : (i)        Burning the paint by directing the flame of a blow lamp on …

Preparation of oil paints

Preparation of oil paints

Learn :Preparation of oil paints Learn : Composition of oil paint PREPARATION OF OIL PAINTS. To get started making oil paint, you’ll need: 1) Cold-pressed, raw, or unrefined linseed oil – Linseed oil tends to do much of the heavy lifting in many oil based paint formulations. The reason is that unlike most plant based …

Characteristics of a good paint

Learn : Characteristics of a good paint,Paints, Paints Classification Characteristics of a good paint Paints Paints  are used to protect metals, timber or plastered surfaces from the corrosive effects of weather, heat, moisture or gases etc. and also to improve their appearance. Paints Classification Paints in common use are classified as oil paints, water paints, cement …

Composition of oil paints

Composition of oil paints : Base,Vehicle,Drier,Colouring pigment,Thinner

Learn :Composition of oil paints: Base: White lead, Red lead, Zinc oxide (or zinc white), Iron Oxide, and metallic powders such as Aluminum, Copper and Bronze etc. are the commonly used bases,Vehicle: Oils most commonly used as vehicles are : Linseed oil, Poppy oil. Nut oil and Tung oil. Colouring pigments,Solvent or thinner,Drier,Inert filler Composition of …

Surkhi,Powdered broken brick (burnt brick)

Surkhi,Powdered broken brick

SURKHI Surkhi,Powdered broken brick (burnt brick) locally called surkhi is used as fine aggregate in lime mortar. Surkhi,Powdered broken brick shall be prepared by finely grinding well burnt good quality bricks free from under burnt particles of soluble salts, pyrites and adherent coatings of soil or silt. The maximum quantity of clay, fine silt and …

Natural rubber,Treatments to improve and modify natural rubber properties

How To Learn rubber  : Natural Rubber(India Rubber),Treatments to improve and modify natural rubber properties,Reclaimed Rubber,Synthetic Rubber,Rubber flooring materials for general purposes RUBBER It is essentially an elastic material and is obtained both as natural and as synthetic material.  Natural Rubber (India Rubber). Natural rubber  is present as an emulsion in the latex of certain …

Thermocol Building material

 THERMOCOL Thermocol : It is the trade name of a very light and cellular plastic material. Initially it is obtained in liquid form and then molded into desired forms. it is an excellent insulating material of heat, sound and electricity. It is very light, strong and durable. It resists dampness. Its compressive strength is 117 …