Description :

THEERTHAM-Polytuf – DOOR & WINDOW SYSTEMS

THEERTHAM -Polytuf is the answer to a 5000 year old need for a perfect window material ; which will not be attacked by Termites ,Rot , Water or Fire like wood ; has the strength and durability of Steel without its weakness to corrode; lightness comparable to Aluminium without the handicap of joint permeability, thermal conductivity and chemical affinity ; and will not need repainting or maintenance for the entire life of a building .

No other material can match THEERTHAM -Polytuf in terms of protection from dust ,heat and noise.

THEERTHAM -Polytuf is made out of specially compounded POLY VINYL CHLORIDE POLYMER extruded into precision and intricate profile sections designed by the world’s best known architects and engineers. These profile sections have steel interior ;they are electro fusion welded and carry special gaskets which guarantees total weather protective glazing . Here is a product produced by the amalgamation of three technologies : polymer ,rubber and steel.

Above all THEERTHAM-Polytuf is ENVIRONMENT FRIENDLY : India’s forest resources are dangerously close to extinction and the need for forest conservation had never been greater than it is today.

THEERTHAM -Polytuf is brought to you by THEERTHAM -Naturals the company which excels in nature friendly products.

What About Cost & Ecomomy ?

Cost & Economy is the first and foremost question that any potential consumer would wish to know.Costs-that need to be looked at in comparison with alternative window materials are initial costs and maintenance costs . It is also wise to look for any hidden costs and savings to get a comprehensive and overall perceptive. The table below answers these important questions :

Material	Initial Cost	Maintenance Cost	Total Cost (INR /Sq Ft)
Ordinary Wood	400	200	600
Teak Wood	650	200	850
Steel	400	200	600
Aluminium	600	200	800
THEERTHAM -Polytuf	600	Nil	600

 

Basis : A 4 Ft x 4 Ft partly openable and partly fixed casement window system with current 2016-17 cost price levels of various materials . Maintenance cost at INR

Latent Invaluable Cost Savings from Upvc

Approximately 20% of any window area consists of frame which is the area of thermal conductivity signified by ‘K’ value. Higher the ‘K’ value, higher the energy loss and consequent higher energy bills .THEERTHAM- Polytuf has the lowest ‘K’ value compared with steel ,aluminium and wood . Windows are

like gate valves for energy losses through air leakages, special whether strips inserted into grooves in the profile sections ensures high level of air -tightness .Window systems of wood and steel even if fairly good at the time of installation rapidly warp ,twist or turn and loose their dimensional stability ,but THEERTHAM-Polytuf does not.

Ready Reckoner of Technical Features of uPVC  Vs Alternatives

Sr	Governing Factor	Wood	Steel	Aluminium	uPVC with Steel
1	Dimensional Stability	*	***	***	****
2	Environmental Stress/Crack Resistance	*	**	**	****
3	Basic Structural Strength/Modulus of Elasticity/Flexural Strength	**	****	**	****
4	Material Fatigue	**	****	***	****
5	Electro Magnetic Shielding	****	***	**	***
6	Impact Resistance	***	****	**	****
7	Chemical Resistance	**	*	**	****
8	Fire Resistance	*	***	**	***
9	Thermal Transmittance Resistance	**	*	*	****
10	Sound Insulation	**	*	***	****
11	Air Tightness	*	*	*	****
12	Operational Easiness	*	*	**	****
13	Periodic Maintenance	*	*	*	****
14	Aesthetic Value	***	*	***	****
	Ratings:
	Poor	** Good	*** Very Good	**** Excellent

               

Technical Features :

Water Tightness :

Water infiltration is the continuous penetration of water which comes in contact with building components which have not been treated against moisture .

There are many ways  by which water can penetrate through window ,major cause being the gap between the sash and the frame which allow water to penetrate during heavy rain fall accompanied by strong winds . These gaps in THEERTHAM -Polytuf have been avoided with the help of weather stripping .

Further THEERTHAM -Polytuf sections do not get deformed after a passage of time unlike conventional material which allows voids to appear which in turn cause water penetration.

                                                           Theertham – polytuf:Water tightness.

 

Strength  & Rigidity :

THEERTHAM -Polytuf windows are strong enough (when closed ) to resist the maximum pressure that may be caused on the sections by wind loads .These are also capable of withstanding accidental pressures or impact which are normally expected to face during their normal usage in the building.

THEERTHAM -Polytuf windows are still enough to withstand wind buffets , the forces which could tent to disturb the frames and put these out of place and can also harm the material . Wind pressure quite frequently causes windows to slam-shut or flung-open against the walls ,sometimes with dangerous leverage that can put the whole systems out of gear.

Inherited strength of THEERTHAM-Polytuf sections has been further enhanced by insulating steel reinforcement bars into its chambers to withstand the worst imaginable conditions.

                                            Multi point locking using Espagnolette handles.

Pre-Installation Protection :

Windows are installed in a building at a stage of civil work where plastering ,painting ,cladding ,colour washing and other finishing work is yet to follow.All the activities can bring surface damage to the window material and the conventional practice is to paint or polish the window in the aftermath.

THEETHAM -Polytuf windows however to overcome all these hazards come with an easily peelable protective film,which can be removed after all finishing work of the building is over or just prior to its occupation.

Maintenance Free :

THEERTHAM-Polytuf windows need no major maintenance .Scratches can be buffed off very easily ,blemishes or stains can be removed just with a mild detergent and water.Periodic oiling is desirable to the hardware same way as for any other window system.

Durability for a Lifetime :

Windows are an important component in a building . Ideally a good window system must last at least the life of the building with minimal maintenance . Traditionally alternative window materials chosen have either wood or metal. Both have serious limitations .

Wooden frames with or without surface finishes could be resistant to rot but quite often easily attacked by fungus ,moth and termites .In addition moisture content variations cause dimensional changes resulting in fitting and operational problems.

Metal frames are of course very sturdy and durable but have serious problems in varying weather conditions and especially susceptible to corrosion.

THEERTHAM-Polytuf windows have an inner invisible steel reinforcement which imparts all the strength and sturdiness that steel can contribute . The exterior Upvc gives total protection from rain humidity. Radioactivity fall out ,dust ,smoke ,pollution do not pitt and certainly not corrode its surface. It is this combination between steel and upvc that gives THEETHAM -Polytuf its exceptional capability to last a life time.

Fire Resistance :

THEERTHAM-Polytuf sections exhibit excellent fire behaviour and do not extend fire once the source of flame is removed from it . Upvc is very difficult to ignite by common ignition sources . It is self -extinguishing .

Thermal Insulation :

                                                                                Thermal Conductivity

As a result of the energy crisis the consumer has become increasingly aware of the importance of thermal insulation .Heat losses through windows represent 20 to 30 % of total heat losses . The insulation value of building materials is indicated by the K value ( W/m2K) .The smaller the K value the larger will be the saving . K value of some window frames is as below :

 

Steel           -    50.00

Aluminium  -175.00

Wood          -     0.12

Upvc            -     0.14

 

Thus Aluminium profiles conduct heat or cold 1250 times quicker than upvc profiles; with same wall thickness and dimension. The thermal insulation can be enhanced even more by multiple glazing units  which is possible with THEERTHAM -Polytuf .

Acoustic Insulation :

People these days are becoming more and more conscious about noise pollution as it affects human life in many ways .

The external noise from road ,rail ,air traffic and the adjoining factories and dwellings get transmitted inside the building in two ways :

• Air borne waves
• Metallic borne waves

 

 

Acoustic insulation is more dependent on the type of windows , the type of gaskets and seals ,the overall air tightness and the type of glazing.

                                                       Glazing – Single, Double, Triple glazing

The joint permeability between window frame and the casement as well as between window frame and masonry plays an important role in sound insulation. By inserting weather strips a considerable level of air tightness can be achieved thereby almost reducing the chances of noise travel through air . The metallic borne noise is effected by the type of glazing .The heavier the glazing ,the better the insulating value shall be . Multiple glazing units can easily be accommodated in THEERTHAM -Polytuf window systems .

Thus our windows systems being more air tight , fabricated out of multi-chambered sections and by using multiple glazing are able to resist both modes of noise travel effectively.

Design Features :

THEERTHAM -Polytuf doors & window systems have been designed to provide total flexibility ,giving the consumers a complete choise of window and door styles like casement , sliding , tilt & turn , louvered  etc.

The visual appearance is elegant ,simple and in keeping with architectural requirements .

Windows are specially tailor made as per customer’s designs and sizes .Standard sizes and designs can also be catered. 

Specifications :

Matrial : Un -Plasticised and high impact resistant rigid PVC extruded material

Glazing : Single or multiple glazing as per customer preference fully insulated for noise reduction and thermal protection using special glazing gaskets.

Weather Strips : EPDM extruded gaskets

Installation : Using metallic screws and special window dowels .

Mounting of fittings : Via special screw channels or steel reinforcement .

Reinforcement : upvc sections are reinforced with galvanized steel tubes.

Joints : The corners of windows and door are thermal fusion welded .

Colour & Finish : White or laminated in wood grain finishes as per customer specifications . No painting required.

Technical Data :

Vical softening point ( with a load of 5 kg )	≥  80 Deg Celsius
Modulus of elasticity in bending	3000 MPa
Tensile strength at flow limit	44 MPa
Elongation at break	120 %
Tensile Impact strength at 23 Deg Celsius	600 kj / m²
Tensile Impact strength  at 0 Deg Celsius	400 kj / m²
Impact resistance in cold conditions	-10 deg Celsius
Coefficient of heat conductivity	0.14 W/m²K
Density	1500 kg/m²
Coefficient of linear expansion	50-80 * 10-6K-1
Water absorption at immersion	0.04 -0.4 %
Shore hardness	80
Not inflammable and self extinguishing
Resistant to acids ,salts ,alcohols and aldehydes.