Purpose of flooring is to get a good hard, level
and beautiful surface for living. The floors directly resting on the ground are
known as ground floors while the floors of each storey are known as upper
Apart from giving good finished surface, these
floors should have good damp resistance. The ground surface is rammed well and
a layer of red earth or sand is placed which is compacted. A layer of broken
bricks, stones etc. is provided up to 150 mm below floor finish level and
rammed. While ramming the surface is kept moist to get good compaction. Then 1
: 4 : 8 concrete of 100 to 150 mm thickness is provided as base course. Over
this bed floor finish is laid.
The types of flooring used are:
1. Mud and moorum 2. Brick
3. Flag stone 4. Cement
5. Terrazo 6. Mosaic
7. Marble 8. Tiles
9. Timber 10. Rubber
Mud and Moorum Flooring: These floorings are used in low cost housing, specially in
villages. Over the hard layer of earth filling mud or moorum layer is provided.
The floor needs a thin wash of cow dung at least once a weak.
Brick Flooring: This is also a cheap floor construction. It is commonly used in
godowns and factories. Bricks are laid flat or on edges. Bricks of good
quality should be used for the construction. Brick layer is provided on sand bed
or on lean concrete (1 : 8 : 16) bed. In both cases joints are rendered flush
and finished with cement mortar.
Flag Stone Flooring: Laminated sand stones or slates of 20 mm to 40 mm thick in the
form of slabs of 300 mm × 300 mm or 450 mm × 450 mm or in the form of
rectangles of size 450 mm × 600 mm are used as floor finishes. The stone slabs
are laid on 20 to 25 mm thick mortar spread over concrete bed. The joints are
to be finished with rich mortar.
4. Cement Concrete
Floors: It is modestly cheap and durable floor and hence
commonly used in residential, commercial and industrial buildings. It
consists of two courses-base course and wearing coat. Base course is laid over
well compacted soil. Its thickness is usually 75 mm to 100 mm. It consists of
lean cement concrete mix (1 : 4 : 8) or lime concrete containing40% of 1 : 2
lime mortar and 60% of coarse aggregate of 40 mm size. After base coarse
ishardened wearing coat of 40 mm is laid. It consists of panels of 1 m × 1 m, 2
m × 2 m or 1 m× 2 m. Alternate panels are laid with 1 : 2 : 4 concrete using
wooden, glass or asbestos strip separators of 1.5 mm to 2.0 mm thickness.
To get good bond
between base coarse and wearing coat cement slurry wash is given before laying
wearing coat panels. After 3–4 days of laying of one set of panel, another alternate panels
are laid. Top of these panels are finished by tamping the surface with wooden
floats and tapping with trowels, till cement slurry appears on top. It needs
curing for 7 to 14 days. To get good appearance many times red-oxide finishing
coat is provided.
Flooring: Terrazo finishing coat is applied over concrete
flooring to get pleasing appearance. Terrazo finish consists of 75 to
80% of surface marble chips embedded in cement mortar.
Marble chips are
mixed in cement in the proportion 1 : 1.25 to 1 : 2 and about 6 mm terrazo
topping is laid. The top is tamped and rolled. Additional marble chips are
spread during tamping to get proper distribution of marble chips on the
surface. After drying it for 12 to 20 hours, it is cured for 2–3 days.
Then grinding is made in the
following three steps:
Ist grinding—Using coarse grade (No. 60) carborundum stones.
IInd grinding—Using medium grade (No. 120) carborundum stones.
IIIrd grinding—Using fine grade (No. 320) carborundum stones.
Plenty of water is
used during grinding. After each grinding cement grout of cream-like
consistency is applied and cured for 6–7 days. After final grinding and curing the floor is washed with
plenty of water and then with dilute oxalic acid solution. Then floor is
finished with polishing using machines and wax polish.
6. Mosaic Flooring:
It consists of a finishing coat of small pieces of broken tiles
of China glazed or of marble arranged in different patterns set in
lime-surkhi or cement mortar. The base coarse is concrete flooring and on it 30
to 40 mm mortar layer is provided. On this mortar layer broken pieces of China
glazed or marble are set to get different attractive patterns. After 20 to 24
hours of drying the top is rubbed with carborundum stone to get smooth and
Marble Flooring: Marble slabs are cut to get marble tiles of 20 to 25 mm
thickness. They are laid on floors similar to other tiles. With power driven
machine surface is polished to get even and shining surface. This type of
flooring is widely used in hospitals and temples.
8. Tiled Flooring: This is
an alternative to terrazo flooring,
used commonly used in
residential, office and commercial buildings. Tiles of clay, cement or terrazo
of standard sizes are manufactured in factories under controlled conditions. On
the concrete base, 25 mm to30 mm thick mortar is laid and these tiles are
placed and pressed with trowel
Before placing tiles care is taken to see that, neat cement slurry is applied
to bottom side and sides of tiles to get good bond. Next day joints are cleaned
of loose mortar and raked up to 5 mm depth. Then that is filled with coloured
cement slurry to get uniform colour on the top surface. After curing for 7 days
grinding and polishing is made as in the case of terrazo flooring.
Timber Flooring: Timber flooring are used in dancing halls and in auditoriums.
Timber plates may be directly placed on concrete bed or may be provided
over timber frame work. In latter case it is necessary to provide proper
ventilation below the floor. This flooring is costly.
10.Rubber Flooring: Tiles or sheets of
rubber with fillers such as cotton fibres, asbestos fibre or granulated
cork are manufactured in variety of patterns and colours. These sheets or tiles
may be fixed to concrete or timber floors. These floors are attractive and
noise proof. However they are costly.
11.P.V.C. Flooring: Poly-Vinyl-Chloride
(PVC) is a plastic which is available in different colour and shade.
Nowadays tiles of this material are used widely. Adhesives are applied on
concrete base as well as on bottom of PVC tiles. Then the tile is pressed
gently with 5 kg wooden roller till the oozing of adhesive is seen. The oozed
out adhesive is wiped and the floor is washed with warm soap water. The floor
finish is smooth, attractive and can be easily cleaned. However it is slippery