Lead is an extremely efficient material for acoustic control systems. Lead sheet is one of the valued added product which is normally used for soundproofing and radiation shielding . Gravita Guard helps to control noise in various interior environments like hospitals, office buildings, industrial plants and apartment buildings.



"Gravita Guard" plays a vital roll for

1. Blocking of sound paths by barriers
2. Damping of structures and surfaces to reduce vib
ration and radiation of airborne sound
3. Absorbing sound-usually by light fibrous materials.

Lead Sheet for Soundproofing

How to use "Gravita Guard"

1. Measure the height and lenght of the walls to be soundproofed, particular attention should be paid to walls adjacent to other rooms with sound sources.
2. Buy enough Lead sheeting to cover the walls you want to soundproof. For this purpose, 0.7mm to 3.5mm Lead sheeting should be sufficient.
3. Use universal bonding compound to attach foam padding to both sides of the Lead sheet and let it dry.
4. Coat the side of your triple-layered insulation sheet in bonding compound using a paint roller. Hold the insulation flat against the wall you are soundproofing until it begins to bind, and then leave it to dry. Repeat this process for all the other walls you want to soundproof.
5. Attach sheets of plasterboard to the outside of the sound insulation, again using UBC, on all the walls that have been sound proofed.

Lead Sheets

Lead sheets are used for permanent shield installations. Lead sheets can be easily bent, shaped and formed for use in many applications. Commonly used medical radiation construction projects, sheet lead can be built into walls, doors and frames to protect medical personnel from gamma rays. It can also be used to stop radiation leakage from cut-outs and penetrations in lead-lined walls.

Sheet lead that is bonded to other materials such as wood, steel, wallboard, plastic, and aluminum for the manufacture of panels, doors, cabinets, portable screens, etc., is known as lead laminate. It is frequently
used because of its self-supporting nature and greater ease in erecting and handling. Lead laminates can be produced in any practical size to comply with the user's requirements. They are especially suitable for the erection of rooms or sections in industrial plants or other buildings as they can be easily assembled by normal construction methods.

Lead sheet and various lead laminates may be used in some applications of portable shielding where the erection of a lead brick wall is not the most convenient method. Such specially designed shields are used in medical and industrial applications of radioactive isotopes.

Commercial Lead Sheets

Thickness		Weight is Pounds for a1 Square foot Section
Inches	Millimeter equivalent	Normal Weight	Actual Weight
1/64	0.40	1	0.92
3/128	0.60	1.5	1.38
1/32	0.79	2	1.85
5/128	1.00	2.5	2.31
3/64	1.19	3	2.76
7/128	1.39	3.5	3.22
-	1.50	-	3.48
1/16	1.58	4	3.69
5/64	1.98	5	4.60
3/32	2.38	6	5.53
-	2.5	-	5.80
-	3.0	-	6.98
1/8	3.17	8	7.38
5/32	3.97	10	9.22
3/16	4.76	12	11.06
7/32	5.55	14	12.9
1/4	6.35	16	14.75
1/3	8.47	20	19.66
2/5	0.76	24	23.60
1/2	2.70	30	29.50
2/3	6.93	40	39.33
1	25.10	60	59.00

Notes:  The density of commercially rolled lead is 11.36 g/cm 3 . 2. The commercial tolerances are +-0.005 inches for lead up to 7/128 and +-1/32 for heavier sheets.

GRAVITA: Lead sheet manufacturer for radiation shileding

 

World Refined Lead Supply and Usage 2009 - 2013
000 tonnes	2009	2010	2011	2012	2013	2012	2013	2013
						Jan-Dec		Sep	Oct	Nov	Dec
Mine Production	3810	4161	4636	4994	5313	4994	5313	488.5	462.1	503.8	446.7
Metal Production	9242	9850	10598	10212	10593	10212	10593	888.4	936.1	907.8	855.6
Metal Usage	9245	9815	10444	10154	10615	10154	10615	899.4	924.0	887.2	835.2

Source: ilzsg.org